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 AC_ARG_WITH(cpp_install_dir,
158 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
159 [install the user visible C preprocessor in DIR
160 (relative to PREFIX) as well as PREFIX/bin])],
161 [if test x$withval = xyes; then
162 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
163 elif test x$withval != xno; then
164 cpp_install_dir=$withval
167 # We would like to our source tree to be readonly. However when releases or
168 # pre-releases are generated, the flex/bison generated files as well as the
169 # various formats of manuals need to be included along with the rest of the
170 # sources. Therefore we have --enable-generated-files-in-srcdir to do
173 AC_MSG_CHECKING([whether to place generated files in the source directory])
174 dnl generated-files-in-srcdir is disabled by default
175 AC_ARG_ENABLE(generated-files-in-srcdir,
176 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
177 [put copies of generated files in source dir
178 intended for creating source tarballs for users
179 without texinfo bison or flex])],
180 generated_files_in_srcdir=$enableval,
181 generated_files_in_srcdir=no)
183 AC_MSG_RESULT($generated_files_in_srcdir)
185 if test "$generated_files_in_srcdir" = "yes"; then
192 # -------------------
193 # Find default linker
194 # -------------------
198 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
199 gnu_ld_flag="$with_gnu_ld",
202 # With pre-defined ld
204 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
205 DEFAULT_LINKER="$with_ld")
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test ! -x "$DEFAULT_LINKER"; then
208 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
209 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
212 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
213 [Define to enable the use of a default linker.])
216 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
217 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
219 AC_MSG_CHECKING([whether a default linker was specified])
220 if test x"${DEFAULT_LINKER+set}" = x"set"; then
221 if test x"$gnu_ld_flag" = x"no"; then
222 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
224 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
230 # With demangler in GNU ld
231 AC_ARG_WITH(demangler-in-ld,
232 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
233 demangler_in_ld="$with_demangler_in_ld",
236 # ----------------------
237 # Find default assembler
238 # ----------------------
242 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
243 gas_flag="$with_gnu_as",
247 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
248 DEFAULT_ASSEMBLER="$with_as")
249 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
250 if test ! -x "$DEFAULT_ASSEMBLER"; then
251 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
252 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
255 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
256 [Define to enable the use of a default assembler.])
259 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
260 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
262 AC_MSG_CHECKING([whether a default assembler was specified])
263 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
264 if test x"$gas_flag" = x"no"; then
265 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
267 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
277 # If a non-executable a.out is present (e.g. created by GNU as above even if
278 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
279 # file, even when creating an executable, so an execution test fails.
280 # Remove possible default executable files to avoid this.
282 # FIXME: This really belongs into AC_PROG_CC and can be removed once
283 # Autoconf includes it.
284 rm -f a.out a.exe b.out
286 # Find the native compiler
290 ACX_PROG_GNAT([-I"$srcdir"/ada])
292 # autoconf is lame and doesn't give us any substitution variable for this.
293 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
294 NO_MINUS_C_MINUS_O=yes
296 OUTPUT_OPTION='-o $@'
298 AC_SUBST(NO_MINUS_C_MINUS_O)
299 AC_SUBST(OUTPUT_OPTION)
301 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
302 # optimizations to be activated explicitly by the toplevel.
305 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
309 # Determine PICFLAG for target gnatlib.
310 GCC_PICFLAG_FOR_TARGET
311 AC_SUBST(PICFLAG_FOR_TARGET)
313 # -------------------------
314 # Check C compiler features
315 # -------------------------
317 AC_USE_SYSTEM_EXTENSIONS
323 # sizeof(char) is 1 by definition.
324 AC_CHECK_SIZEOF(void *)
325 AC_CHECK_SIZEOF(short)
327 AC_CHECK_SIZEOF(long)
328 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
329 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
332 # ---------------------
333 # Warnings and checking
334 # ---------------------
336 # Check $CC warning features (if it's GCC).
337 # We want to use -pedantic, but we don't want warnings about
341 # * C++11 narrowing conversions in { }
342 # So, we only use -pedantic if we can disable those warnings.
344 ACX_PROG_CC_WARNING_OPTS(
345 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
346 ACX_PROG_CC_WARNING_OPTS(
347 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
349 ACX_PROG_CC_WARNING_OPTS(
350 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
351 ACX_PROG_CC_WARNING_OPTS(
352 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
353 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
354 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
355 [-Wno-overlength-strings])), [strict_warn])
356 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
358 # The above macros do nothing if the compiler is not GCC. However, the
359 # Makefile has more goo to add other flags, so these variables are used
360 # to enable warnings only for GCC.
363 if test "x$GCC" = "xyes"; then
364 warn_cflags='$(GCC_WARN_CFLAGS)'
365 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
367 AC_SUBST(warn_cflags)
368 AC_SUBST(warn_cxxflags)
370 # Disable exceptions and RTTI if building with g++
371 ACX_PROG_CC_WARNING_OPTS(
372 m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
374 # Enable expensive internal checks
376 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
380 AC_ARG_ENABLE(checking,
381 [AS_HELP_STRING([[--enable-checking[=LIST]]],
382 [enable expensive run-time checks. With LIST,
383 enable only specific categories of checks.
384 Categories are: yes,no,all,none,release.
385 Flags are: assert,df,fold,gc,gcac,gimple,misc,
386 rtlflag,rtl,runtime,tree,valgrind,types])],
387 [ac_checking_flags="${enableval}"],[
388 # Determine the default checks.
389 if test x$is_release = x ; then
390 ac_checking_flags=yes
392 ac_checking_flags=release
394 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
395 for check in release $ac_checking_flags
398 # these set all the flags to specific states
399 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking=1 ;
401 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
402 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
403 ac_tree_checking=1 ; ac_valgrind_checking= ;
404 ac_types_checking=1 ;;
405 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
406 ac_fold_checking= ; ac_gc_checking= ;
407 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
408 ac_rtlflag_checking= ; ac_runtime_checking= ;
409 ac_tree_checking= ; ac_valgrind_checking= ;
410 ac_types_checking= ;;
411 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
412 ac_fold_checking=1 ; ac_gc_checking=1 ;
413 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
414 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
415 ac_tree_checking=1 ; ac_valgrind_checking= ;
416 ac_types_checking=1 ;;
417 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
418 ac_fold_checking= ; ac_gc_checking= ;
419 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
420 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
421 ac_tree_checking= ; ac_valgrind_checking= ;
422 ac_types_checking= ;;
423 # these enable particular checks
424 assert) ac_assert_checking=1 ;;
425 df) ac_df_checking=1 ;;
426 fold) ac_fold_checking=1 ;;
427 gc) ac_gc_checking=1 ;;
428 gcac) ac_gc_always_collect=1 ;;
429 gimple) ac_gimple_checking=1 ;;
430 misc) ac_checking=1 ;;
431 rtl) ac_rtl_checking=1 ;;
432 rtlflag) ac_rtlflag_checking=1 ;;
433 runtime) ac_runtime_checking=1 ;;
434 tree) ac_tree_checking=1 ;;
435 types) ac_types_checking=1 ;;
436 valgrind) ac_valgrind_checking=1 ;;
437 *) AC_MSG_ERROR(unknown check category $check) ;;
443 if test x$ac_checking != x ; then
444 AC_DEFINE(ENABLE_CHECKING, 1,
445 [Define if you want more run-time sanity checks. This one gets a grab
446 bag of miscellaneous but relatively cheap checks.])
447 nocommon_flag=-fno-common
449 AC_SUBST(nocommon_flag)
450 if test x$ac_df_checking != x ; then
451 AC_DEFINE(ENABLE_DF_CHECKING, 1,
452 [Define if you want more run-time sanity checks for dataflow.])
454 if test x$ac_assert_checking != x ; then
455 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
456 [Define if you want assertions enabled. This is a cheap check.])
458 if test x$ac_gimple_checking != x ; then
459 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
460 [Define if you want operations on GIMPLE (the basic data structure of
461 the high-level optimizers) to be checked for dynamic type safety at
462 runtime. This is moderately expensive.])
464 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
465 if test x$ac_runtime_checking != x ; then
466 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
467 [Define if you want runtime assertions enabled. This is a cheap check.])
469 if test x$ac_tree_checking != x ; then
470 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
471 [Define if you want all operations on trees (the basic data
472 structure of the front ends) to be checked for dynamic type safety
473 at runtime. This is moderately expensive. The tree browser debugging
474 routines will also be enabled by this option.
476 TREEBROWSER=tree-browser.o
478 if test x$ac_types_checking != x ; then
479 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
480 [Define if you want all gimple types to be verified after gimplifiation.
484 AC_SUBST(TREEBROWSER)
485 if test x$ac_rtl_checking != x ; then
486 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
487 [Define if you want all operations on RTL (the basic data structure
488 of the optimizer and back end) to be checked for dynamic type safety
489 at runtime. This is quite expensive.])
491 if test x$ac_rtlflag_checking != x ; then
492 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
493 [Define if you want RTL flag accesses to be checked against the RTL
494 codes that are supported for each access macro. This is relatively
497 if test x$ac_gc_checking != x ; then
498 AC_DEFINE(ENABLE_GC_CHECKING, 1,
499 [Define if you want the garbage collector to do object poisoning and
500 other memory allocation checks. This is quite expensive.])
502 if test x$ac_gc_always_collect != x ; then
503 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
504 [Define if you want the garbage collector to operate in maximally
505 paranoid mode, validating the entire heap and collecting garbage at
506 every opportunity. This is extremely expensive.])
508 if test x$ac_fold_checking != x ; then
509 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
510 [Define if you want fold checked that it never destructs its argument.
511 This is quite expensive.])
513 valgrind_path_defines=
516 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
517 dnl # an if statement. This was the source of very frustrating bugs
518 dnl # in converting to autoconf 2.5x!
519 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
521 if test x$ac_valgrind_checking != x ; then
522 # It is certainly possible that there's valgrind but no valgrind.h.
523 # GCC relies on making annotations so we must have both.
524 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
525 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
526 [[#include <valgrind/memcheck.h>
527 #ifndef VALGRIND_DISCARD
528 #error VALGRIND_DISCARD not defined
530 [gcc_cv_header_valgrind_memcheck_h=yes],
531 [gcc_cv_header_valgrind_memcheck_h=no])
532 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
533 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
534 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
535 [[#include <memcheck.h>
536 #ifndef VALGRIND_DISCARD
537 #error VALGRIND_DISCARD not defined
539 [gcc_cv_header_memcheck_h=yes],
540 [gcc_cv_header_memcheck_h=no])
541 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
542 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
543 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
544 if test "x$valgrind_path" = "x" \
545 || (test $have_valgrind_h = no \
546 && test $gcc_cv_header_memcheck_h = no \
547 && test $gcc_cv_header_valgrind_memcheck_h = no); then
548 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
550 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
551 valgrind_command="$valgrind_path -q"
552 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
553 [Define if you want to run subprograms and generated programs
554 through valgrind (a memory checker). This is extremely expensive.])
555 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
556 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
557 [Define if valgrind's valgrind/memcheck.h header is installed.])
559 if test $gcc_cv_header_memcheck_h = yes; then
560 AC_DEFINE(HAVE_MEMCHECK_H, 1,
561 [Define if valgrind's memcheck.h header is installed.])
564 AC_SUBST(valgrind_path_defines)
565 AC_SUBST(valgrind_command)
567 # Enable code coverage collection
568 AC_ARG_ENABLE(coverage,
569 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
570 [enable compiler's code coverage collection.
571 Use to measure compiler performance and locate
572 unused parts of the compiler. With LEVEL, specify
573 optimization. Values are opt, noopt,
575 [case "${enableval}" in
577 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
580 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
583 # a.k.a. --disable-coverage
587 AC_MSG_ERROR(unknown coverage setting $enableval)
591 AC_SUBST(coverage_flags)
593 AC_ARG_ENABLE(gather-detailed-mem-stats,
594 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
595 [enable detailed memory allocation stats gathering])], [],
596 [enable_gather_detailed_mem_stats=no])
597 if test x$enable_gather_detailed_mem_stats = xyes ; then
598 AC_DEFINE(GATHER_STATISTICS, 1,
599 [Define to enable detailed memory allocation stats gathering.])
602 # -------------------------------
603 # Miscenalleous configure options
604 # -------------------------------
606 # See if we are building gcc with C++.
607 AC_ARG_ENABLE(build-with-cxx,
608 [AS_HELP_STRING([--enable-build-with-cxx],
609 [build with C++ compiler instead of C compiler])],
610 ENABLE_BUILD_WITH_CXX=$enableval,
611 ENABLE_BUILD_WITH_CXX=no)
612 AC_SUBST(ENABLE_BUILD_WITH_CXX)
613 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
614 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
615 [Define if building with C++.])
620 [AS_HELP_STRING([--with-stabs],
621 [arrange to use stabs instead of host debug format])],
625 # Determine whether or not multilibs are enabled.
626 AC_ARG_ENABLE(multilib,
627 [AS_HELP_STRING([--enable-multilib],
628 [enable library support for multiple ABIs])],
629 [], [enable_multilib=yes])
630 AC_SUBST(enable_multilib)
632 # Enable __cxa_atexit for C++.
633 AC_ARG_ENABLE(__cxa_atexit,
634 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
637 # Enable C extension for decimal float if target supports it.
638 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
640 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
641 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
642 [Define to 1 to enable decimal float extension to C.])
644 # Use default_decimal_float for dependency.
645 enable_decimal_float=$default_decimal_float
647 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
648 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
649 [Define to 1 to specify that we are using the BID decimal floating
650 point format instead of DPD])
652 # Enable C extension for fixed-point arithmetic.
653 AC_ARG_ENABLE(fixed-point,
654 [AS_HELP_STRING([--enable-fixed-point],
655 [enable fixed-point arithmetic extension to C])],
660 enable_fixed_point=yes
666 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
667 enable_fixed_point=no
670 enable_fixed_point=yes
675 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
676 enable_fixed_point=no
680 AC_SUBST(enable_fixed_point)
682 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
683 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
684 [Define to 1 to enable fixed-point arithmetic extension to C.])
687 # Pass with no value to take the default
688 # Pass with a value to specify a thread package
689 AC_ARG_ENABLE(threads,
690 [AS_HELP_STRING([[--enable-threads[=LIB]]],
691 [enable thread usage for target GCC,
692 using LIB thread package])],,
696 [AS_HELP_STRING([--enable-tls],
697 [enable or disable generation of tls code
698 overriding the assembler check for tls support])],
702 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
703 Valid choices are 'yes' and 'no'.]) ;;
707 AC_ARG_ENABLE(objc-gc,
708 [AS_HELP_STRING([--enable-objc-gc],
709 [enable the use of Boehm's garbage collector with
710 the GNU Objective-C runtime])],
711 if test x$enable_objc_gc = xno; then
719 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
720 dwarf2="$with_dwarf2",
723 AC_ARG_ENABLE(shared,
724 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
726 case $enable_shared in
730 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
731 for pkg in $enableval; do
732 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
739 ], [enable_shared=yes])
740 AC_SUBST(enable_shared)
742 AC_ARG_WITH([native-system-header-dir],
743 [ --with-native-system-header-dir=dir
744 use dir as the directory to look for standard
745 system header files in. Defaults to /usr/include.],
747 case ${with_native_system_header_dir} in
748 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
749 /* | [[A-Za-z]]:[[\\/]]*) ;;
750 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
752 configured_native_system_header_dir="${withval}"
753 ], [configured_native_system_header_dir=])
755 AC_ARG_WITH(build-sysroot,
756 [AS_HELP_STRING([--with-build-sysroot=sysroot],
757 [use sysroot as the system root during the build])],
758 [if test x"$withval" != x ; then
759 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
761 [SYSROOT_CFLAGS_FOR_TARGET=])
762 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
765 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
766 [search for usr/lib, usr/include, et al, within DIR])],
768 case ${with_sysroot} in
769 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
770 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
773 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
774 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
776 if test "x$prefix" = xNONE; then
777 test_prefix=/usr/local
781 if test "x$exec_prefix" = xNONE; then
782 test_exec_prefix=$test_prefix
784 test_exec_prefix=$exec_prefix
786 case ${TARGET_SYSTEM_ROOT} in
787 "${test_prefix}"|"${test_prefix}/"*|\
788 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
789 '${prefix}'|'${prefix}/'*|\
790 '${exec_prefix}'|'${exec_prefix}/'*)
791 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
792 TARGET_SYSTEM_ROOT_DEFINE="$t"
797 TARGET_SYSTEM_ROOT_DEFINE=
798 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
800 AC_SUBST(TARGET_SYSTEM_ROOT)
801 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
802 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
805 [AS_HELP_STRING([--with-specs=SPECS],
806 [add SPECS to driver command-line processing])],
807 [CONFIGURE_SPECS=$withval],
810 AC_SUBST(CONFIGURE_SPECS)
812 ACX_PKGVERSION([GCC])
813 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
815 # Sanity check enable_languages in case someone does not run the toplevel
816 # configure # script.
817 AC_ARG_ENABLE(languages,
818 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
819 [case ,${enable_languages}, in
821 # go safe -- we cannot be much sure without the toplevel
823 # analysis of which target libs are present and usable
827 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
832 enable_languages=c,${enable_languages}
835 [enable_languages=c])
837 AC_ARG_WITH(multilib-list,
838 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
840 with_multilib_list=default)
842 # -------------------------
843 # Checks for other programs
844 # -------------------------
848 # Find some useful tools
850 # We need awk to create options.c and options.h.
851 # Bail out if it's missing.
853 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
860 AC_SUBST(ranlib_flags)
864 # See if cmp has --ignore-initial.
865 gcc_AC_PROG_CMP_IGNORE_INITIAL
867 # See if we have the mktemp command.
868 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
870 # See if makeinfo has been installed and is modern enough
871 # that we can use it.
872 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
873 [GNU texinfo.* \([0-9][0-9.]*\)],
874 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
875 if test $gcc_cv_prog_makeinfo_modern = no; then
877 *** Makeinfo is missing or too old.
878 *** Info documentation will not be built.])
885 # Is pod2man recent enough to regenerate manpages?
886 AC_MSG_CHECKING([for recent Pod::Man])
887 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
889 GENERATED_MANPAGES=generated-manpages
894 AC_SUBST(GENERATED_MANPAGES)
896 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
899 dnl Don't use AC_PROG_LEX; we insist on flex.
900 dnl LEXLIB is not useful in gcc.
901 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
904 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
906 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
907 # check for build == host before using them.
910 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
911 && test -d ../binutils ; then
912 NM='${objdir}/../binutils/nm-new'
914 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
918 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
919 && test -d ../binutils ; then
920 AR='${objdir}/../binutils/ar'
922 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
926 # --------------------
927 # Checks for C headers
928 # --------------------
930 # Need to reject headers which give warnings, so that the -Werror bootstrap
931 # works later. *sigh* This needs to come before all header checks.
938 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
939 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
940 sys/resource.h sys/param.h sys/times.h sys/stat.h \
941 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
943 # Check for thread headers.
944 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
945 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
947 # These tests can't be done till we know if we have limits.h.
951 # ----------------------
952 # Checks for C++ headers
953 # ----------------------
955 dnl Autoconf will give an error in the configure script if there is no
956 dnl C++ preprocessor. Hack to prevent that.
957 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
959 m4_popdef([AC_MSG_ERROR])[]dnl
963 AC_CHECK_HEADERS(unordered_map)
964 AC_CHECK_HEADERS(tr1/unordered_map)
965 AC_CHECK_HEADERS(ext/hash_map)
974 # These libraries may be used by collect2.
975 # We may need a special search path to get them linked.
976 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
978 for libs in '' -lld -lmld \
979 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
980 '-L/usr/lib/cmplrs/cc3.11 -lmld'
983 AC_TRY_LINK_FUNC(ldopen,
984 [gcc_cv_collect2_libs="$libs"; break])
987 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
988 case $gcc_cv_collect2_libs in
990 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
992 AC_SUBST(COLLECT2_LIBS)
994 # When building Ada code on Alpha, we need exc_resume which is usually in
995 # -lexc. So test for it.
998 AC_SEARCH_LIBS(exc_resume, exc)
1001 AC_SUBST(GNAT_LIBEXC)
1003 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1006 AC_SEARCH_LIBS(kstat_open, kstat)
1007 EXTRA_GCC_LIBS="$LIBS"
1009 AC_SUBST(EXTRA_GCC_LIBS)
1011 # Some systems put ldexp and frexp in libm instead of libc; assume
1012 # they're both in the same place. jcf-dump needs them.
1015 AC_SEARCH_LIBS(ldexp, m)
1020 # Use <inttypes.h> only if it exists,
1021 # doesn't clash with <sys/types.h>, and declares intmax_t.
1022 AC_MSG_CHECKING(for inttypes.h)
1023 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1024 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1025 [[#include <sys/types.h>
1026 #include <inttypes.h>]],
1027 [[intmax_t i = -1;]])],
1028 [gcc_cv_header_inttypes_h=yes],
1029 [gcc_cv_header_inttypes_h=no])])
1030 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1031 if test $gcc_cv_header_inttypes_h = yes; then
1032 AC_DEFINE(HAVE_INTTYPES_H, 1,
1033 [Define if you have a working <inttypes.h> header file.])
1036 dnl Disabled until we have a complete test for buggy enum bitfields.
1037 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1039 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1040 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1041 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1042 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1043 putchar_unlocked putc_unlocked)
1044 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1045 sysconf strsignal getrusage nl_langinfo \
1046 gettimeofday mbstowcs wcswidth mmap setlocale \
1047 gcc_UNLOCKED_FUNCS madvise)
1049 if test x$ac_cv_func_mbstowcs = xyes; then
1050 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1051 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1057 [gcc_cv_func_mbstowcs_works=yes],
1058 [gcc_cv_func_mbstowcs_works=no],
1059 [gcc_cv_func_mbstowcs_works=yes])])
1060 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1061 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1062 [Define this macro if mbstowcs does not crash when its
1063 first argument is NULL.])
1067 AC_CHECK_TYPE(ssize_t, int)
1068 AC_CHECK_TYPE(caddr_t, char *)
1070 gcc_AC_FUNC_MMAP_BLACKLIST
1074 # Under VMS, vfork works very differently than on Unix. The standard test
1075 # won't work, and it isn't easily adaptable. It makes more sense to
1077 ac_cv_func_vfork_works=yes
1082 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1083 # iconv() prototype.
1084 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1085 [AC_LANG_PUSH([C++])
1087 AC_LANG_POP([C++])],
1090 # Until we have in-tree GNU iconv:
1092 AC_SUBST(LIBICONV_DEP)
1098 # We will need to find libiberty.h and ansidecl.h
1099 saved_CFLAGS="$CFLAGS"
1100 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1101 saved_CXXFLAGS="$CXXFLAGS"
1102 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1103 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1104 strsignal strstr stpcpy strverscmp \
1105 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1106 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1107 #include "ansidecl.h"
1108 #include "system.h"])
1110 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1111 #include "ansidecl.h"
1113 #ifdef HAVE_SYS_RESOURCE_H
1114 #include <sys/resource.h>
1118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1119 #include "ansidecl.h"
1121 #ifdef HAVE_SYS_RESOURCE_H
1122 #include <sys/resource.h>
1124 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1125 [Define to `long' if <sys/resource.h> doesn't define.])])
1127 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1128 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1129 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1130 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1131 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1132 #include "ansidecl.h"
1141 gcc_AC_CHECK_DECLS(times, , ,[
1142 #include "ansidecl.h"
1144 #ifdef HAVE_SYS_TIMES_H
1145 #include <sys/times.h>
1149 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1150 #include "ansidecl.h"
1155 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1157 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1158 [AC_LANG_PUSH([C++])
1159 gcc_AC_CHECK_DECLS(madvise, , ,[
1160 #include "ansidecl.h"
1163 AC_LANG_POP([C++])],
1164 [gcc_AC_CHECK_DECLS(madvise, , ,[
1165 #include "ansidecl.h"
1170 # More time-related stuff.
1171 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1172 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1173 #include "ansidecl.h"
1175 #ifdef HAVE_SYS_TIMES_H
1176 #include <sys/times.h>
1178 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1179 if test $ac_cv_struct_tms = yes; then
1180 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1181 [Define if <sys/times.h> defines struct tms.])
1184 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1185 # revisit after autoconf 2.50.
1186 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1187 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1188 #include "ansidecl.h"
1190 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1191 if test $gcc_cv_type_clock_t = yes; then
1192 AC_DEFINE(HAVE_CLOCK_T, 1,
1193 [Define if <time.h> defines clock_t.])
1196 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1197 CFLAGS="$saved_CFLAGS"
1198 CXXFLAGS="$saved_CXXFLAGS"
1200 gcc_AC_INITFINI_ARRAY
1202 # mkdir takes a single argument on some systems.
1203 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1211 # With Setjmp/Longjmp based exception handling.
1212 AC_ARG_ENABLE(sjlj-exceptions,
1213 [AS_HELP_STRING([--enable-sjlj-exceptions],
1214 [arrange to use setjmp/longjmp exception handling])],
1217 if test $enableval != yes; then
1218 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1223 force_sjlj_exceptions=yes],
1226 force_sjlj_exceptions=yes
1230 force_sjlj_exceptions=no
1233 if test $force_sjlj_exceptions = yes; then
1234 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1235 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1236 [Define 0/1 to force the choice for exception handling model.])
1239 # --------------------------------------------------------
1240 # Build, host, and target specific configuration fragments
1241 # --------------------------------------------------------
1243 # Collect build-machine-specific information.
1244 . ${srcdir}/config.build
1246 # Collect host-machine-specific information.
1247 . ${srcdir}/config.host
1251 # Collect target-machine-specific information.
1252 . ${srcdir}/config.gcc
1254 extra_objs="${host_extra_objs} ${extra_objs}"
1255 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1257 # Default the target-machine variables that were not explicitly set.
1258 if test x"$tm_file" = x
1259 then tm_file=$cpu_type/$cpu_type.h; fi
1261 if test x"$extra_headers" = x
1262 then extra_headers=; fi
1264 if test x$md_file = x
1265 then md_file=$cpu_type/$cpu_type.md; fi
1267 if test x$out_file = x
1268 then out_file=$cpu_type/$cpu_type.c; fi
1270 if test x"$tmake_file" = x
1271 then tmake_file=$cpu_type/t-$cpu_type
1274 if test x"$dwarf2" = xyes
1275 then tm_file="$tm_file tm-dwarf2.h"
1278 # Say what files are being used for the output code and MD file.
1279 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1280 echo "Using \`$srcdir/config/$md_file' as machine description file."
1282 # If any of the xm_file variables contain nonexistent files, warn
1283 # about them and drop them.
1286 for x in $build_xm_file; do
1287 if test -f $srcdir/config/$x
1289 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1295 for x in $host_xm_file; do
1296 if test -f $srcdir/config/$x
1298 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1304 for x in $xm_file; do
1305 if test -f $srcdir/config/$x
1307 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1313 for f in $tm_file; do
1316 if test $count = ax; then
1317 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1319 echo "Using the following target machine macro files:"
1320 for f in $tm_file; do
1321 echo " $srcdir/config/$f"
1325 if test x$need_64bit_hwint = xyes; then
1326 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1327 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1330 if test x$use_long_long_for_widest_fast_int = xyes; then
1331 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1332 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1333 efficiently supported by the host hardware.])
1337 for f in $host_xm_file; do
1340 if test $count = a; then
1342 elif test $count = ax; then
1343 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1345 echo "Using the following host machine macro files:"
1346 for f in $host_xm_file; do
1347 echo " $srcdir/config/$f"
1350 echo "Using ${out_host_hook_obj} for host machine hooks."
1352 if test "$host_xm_file" != "$build_xm_file"; then
1354 for f in $build_xm_file; do
1357 if test $count = a; then
1359 elif test $count = ax; then
1360 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1362 echo "Using the following build machine macro files:"
1363 for f in $build_xm_file; do
1364 echo " $srcdir/config/$f"
1369 if test -n "$configured_native_system_header_dir"; then
1370 native_system_header_dir=$configured_native_system_header_dir
1372 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1373 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1377 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1378 gcc_cv_mcontext_underscores,
1380 #include <sys/cdefs.h>
1381 #include <sys/signal.h>
1382 #include <ucontext.h>
1383 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1385 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1386 if test $gcc_cv_mcontext_underscores = yes; then
1387 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1388 [mcontext_t fields start with __])
1397 # Check if a valid thread package
1398 case ${enable_threads} in
1401 target_thread_file='single'
1405 target_thread_file='single'
1407 aix | dce | lynx | mipssde | posix | rtems | \
1408 single | tpf | vxworks | win32)
1409 target_thread_file=${enable_threads}
1412 echo "${enable_threads} is an unknown thread package" 1>&2
1417 if test x${thread_file} = x; then
1418 # No thread file set by target-specific clauses in config.gcc,
1419 # so use file chosen by default logic above
1420 thread_file=${target_thread_file}
1428 if test x$enable___cxa_atexit = xyes || \
1429 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1430 if test x$host = x$target; then
1432 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1433 # keyed to flag_use_cxa_atexit
1438 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1439 [echo "__cxa_atexit can't be enabled on this target"])
1443 # We can't check for __cxa_atexit when building a cross, so assume
1447 if test x$use_cxa_atexit = xyes; then
1448 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1449 [Define if you want to use __cxa_atexit, rather than atexit, to
1450 register C++ destructors for local statics and global objects.
1451 This is essential for fully standards-compliant handling of
1452 destructors, but requires __cxa_atexit in libc.])
1456 # Look for a file containing extra machine modes.
1457 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1458 extra_modes_file='$(srcdir)'/config/${extra_modes}
1459 AC_SUBST(extra_modes_file)
1460 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1461 [Define to the name of a file containing a list of extra machine modes
1462 for this architecture.])
1465 # Convert extra_options into a form suitable for Makefile use.
1468 for f in $extra_options; do
1469 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1470 all_opt_files="$all_opt_files $srcdir/config/$f"
1472 AC_SUBST(extra_opt_files)
1474 # auto-host.h is the file containing items generated by autoconf and is
1475 # the first file included by config.h.
1476 # If host=build, it is correct to have bconfig include auto-host.h
1477 # as well. If host!=build, we are in error and need to do more
1478 # work to find out the build config parameters.
1479 if test x$host = x$build
1481 build_auto=auto-host.h
1483 # We create a subdir, then run autoconf in the subdir.
1484 # To prevent recursion we set host and build for the new
1485 # invocation of configure to the build for this invocation
1492 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1493 *) realsrcdir=../${srcdir};;
1495 saved_CFLAGS="${CFLAGS}"
1496 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1497 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1498 ${realsrcdir}/configure \
1499 --enable-languages=${enable_languages-all} \
1500 --target=$target_alias --host=$build_alias --build=$build_alias
1501 CFLAGS="${saved_CFLAGS}"
1503 # We just finished tests for the build machine, so rename
1504 # the file auto-build.h in the gcc directory.
1505 mv auto-host.h ../auto-build.h
1508 build_auto=auto-build.h
1510 AC_SUBST(build_subdir)
1512 tm_file="${tm_file} defaults.h"
1513 tm_p_file="${tm_p_file} tm-preds.h"
1514 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1515 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1516 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1517 # put this back in temporarily.
1518 xm_file="auto-host.h ansidecl.h ${xm_file}"
1525 # Compile in configure arguments.
1526 if test -f configargs.h ; then
1527 # Being re-configured.
1528 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1529 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1531 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1534 # Double all backslashes and backslash all quotes to turn
1535 # gcc_config_arguments into a C string.
1536 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1537 $gcc_config_arguments
1539 gcc_config_arguments_str=`cat conftest.out`
1542 cat > configargs.h <<EOF
1543 /* Generated automatically. */
1544 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1545 static const char thread_model[] = "$thread_file";
1547 static const struct {
1548 const char *name, *value;
1549 } configure_default_options[] = $configure_default_options;
1554 gcc_BASEVER=`cat $srcdir/BASE-VER`
1555 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1556 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1557 if test -f $srcdir/REVISION ; then
1558 gcc_REVISION=`cat $srcdir/REVISION`
1562 cat > plugin-version.h <<EOF
1563 #include "configargs.h"
1565 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1566 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1567 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1568 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1570 static char basever[] = "$gcc_BASEVER";
1571 static char datestamp[] = "$gcc_DATESTAMP";
1572 static char devphase[] = "$gcc_DEVPHASE";
1573 static char revision[] = "$gcc_REVISION";
1575 /* FIXME plugins: We should make the version information more precise.
1576 One way to do is to add a checksum. */
1578 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1580 configuration_arguments};
1584 # Internationalization
1585 ZW_GNU_GETTEXT_SISTER_DIR
1587 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1588 # -liconv on the link line twice.
1589 case "$LIBINTL" in *$LIBICONV*)
1593 AC_ARG_ENABLE(secureplt,
1594 [AS_HELP_STRING([--enable-secureplt],
1595 [enable -msecure-plt by default for PowerPC])],
1598 AC_ARG_ENABLE(leading-mingw64-underscores,
1599 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1600 [enable leading underscores on 64 bit mingw targets]),
1602 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1603 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1604 [Define if we should use leading underscore on 64 bit mingw targets])])
1607 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1610 AC_ARG_ENABLE(frame-pointer,
1611 [AS_HELP_STRING([--enable-frame-pointer],
1612 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1615 linux* | darwin[[8912]]*)
1616 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1618 enable_frame_pointer=no
1621 enable_frame_pointer=yes
1626 # Windows32 Registry support for specifying GCC installation paths.
1627 AC_ARG_ENABLE(win32-registry,
1628 [AS_HELP_STRING([--disable-win32-registry],
1629 [disable lookup of installation paths in the
1630 Registry on Windows hosts])
1631 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1632 AS_HELP_STRING([--enable-win32-registry=KEY],
1633 [use KEY instead of GCC version as the last portion
1634 of the registry key])],,)
1637 win32 | pe | cygwin* | mingw32* | uwin*)
1638 if test "x$enable_win32_registry" != xno; then
1639 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1642 if test "x$enable_win32_registry" != xno; then
1643 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1644 [Define to 1 if installation paths should be looked up in the Windows
1645 Registry. Ignored on non-Windows hosts.])
1647 if test "x$enable_win32_registry" != xyes \
1648 && test "x$enable_win32_registry" != x; then
1649 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1650 [Define to be the last component of the Windows registry key under which
1651 to look for installation paths. The full key used will be
1652 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1653 The default is the GCC version number.])
1659 # Get an absolute path to the GCC top-level source directory
1660 holddir=`${PWDCMD-pwd}`
1662 topdir=`${PWDCMD-pwd}`
1665 # Conditionalize the makefile for this host machine.
1667 for f in ${host_xmake_file}
1669 if test -f ${srcdir}/config/$f
1671 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1675 # Conditionalize the makefile for this target machine.
1677 for f in ${tmake_file}
1679 if test -f ${srcdir}/config/$f
1681 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1684 tmake_file="${tmake_file_}"
1686 out_object_file=`basename $out_file .c`.o
1687 common_out_object_file=`basename $common_out_file .c`.o
1689 tm_file_list="options.h"
1690 tm_include_list="options.h insn-constants.h"
1691 for f in $tm_file; do
1694 f=`echo $f | sed 's/^..//'`
1695 tm_file_list="${tm_file_list} $f"
1696 tm_include_list="${tm_include_list} $f"
1699 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1700 tm_include_list="${tm_include_list} $f"
1703 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1704 tm_include_list="${tm_include_list} config/$f"
1711 for f in $tm_p_file; do
1714 tm_p_file_list="${tm_p_file_list} $f"
1715 tm_p_include_list="${tm_p_include_list} $f"
1718 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1719 tm_p_include_list="${tm_p_include_list} config/$f"
1725 for f in $xm_file; do
1728 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1729 xm_include_list="${xm_include_list} $f"
1732 xm_file_list="${xm_file_list} $f"
1733 xm_include_list="${xm_include_list} $f"
1736 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1737 xm_include_list="${xm_include_list} config/$f"
1743 host_xm_include_list=
1744 for f in $host_xm_file; do
1747 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1748 host_xm_include_list="${host_xm_include_list} $f"
1751 host_xm_file_list="${host_xm_file_list} $f"
1752 host_xm_include_list="${host_xm_include_list} $f"
1755 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1756 host_xm_include_list="${host_xm_include_list} config/$f"
1762 for f in $build_xm_file; do
1765 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1766 build_xm_include_list="${build_xm_include_list} $f"
1768 auto-build.h | auto-host.h )
1769 build_xm_file_list="${build_xm_file_list} $f"
1770 build_xm_include_list="${build_xm_include_list} $f"
1773 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1774 build_xm_include_list="${build_xm_include_list} config/$f"
1779 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1780 # cross-compiler which does not use the native headers and libraries.
1781 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1782 CROSS= AC_SUBST(CROSS)
1783 ALL=all.internal AC_SUBST(ALL)
1784 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1786 if test "x$with_build_sysroot" != x; then
1787 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1789 # This value is used, even on a native system, because
1790 # CROSS_SYSTEM_HEADER_DIR is just
1791 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1792 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1795 if test x$host != x$target
1797 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1799 SYSTEM_HEADER_DIR=$build_system_header_dir
1800 case "$host","$target" in
1801 # Darwin crosses can use the host system's libraries and headers,
1802 # because of the fat library support. Of course, it must be the
1803 # same version of Darwin on both sides. Allow the user to
1804 # just say --target=foo-darwin without a version number to mean
1805 # "the version on this system".
1806 *-*-darwin*,*-*-darwin*)
1807 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1808 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1809 if test $hostos = $targetos -o $targetos = darwin ; then
1811 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1816 i?86-*-*,x86_64-*-* \
1817 | powerpc*-*-*,powerpc64*-*-*)
1818 CROSS="$CROSS -DNATIVE_CROSS" ;;
1823 if test "x$with_headers" = x; then
1830 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1831 SYSTEM_HEADER_DIR=$build_system_header_dir
1834 # If this is a cross-compiler that does not
1835 # have its own set of headers then define
1838 # If this is using newlib, without having the headers available now,
1839 # then define inhibit_libc in LIBGCC2_CFLAGS.
1840 # This prevents libgcc2 from containing any code which requires libc
1842 : ${inhibit_libc=false}
1843 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1844 test x$with_newlib = xyes ; } &&
1845 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1848 AC_SUBST(inhibit_libc)
1850 # When building gcc with a cross-compiler, we need to adjust things so
1851 # that the generator programs are still built with the native compiler.
1852 # Also, we cannot run fixincludes.
1854 # These are the normal (build=host) settings:
1855 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1856 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1857 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1858 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1860 # And these apply if build != host, or we are generating coverage data
1861 if test x$build != x$host || test "x$coverage_flags" != x
1863 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1864 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1867 # Expand extra_headers to include complete path.
1868 # This substitutes for lots of t-* files.
1870 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1871 for file in ${extra_headers} ; do
1872 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1875 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1876 if test x"$use_gcc_tgmath" = xyes
1877 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1880 # Define collect2 in Makefile.
1881 case $host_can_use_collect2 in
1883 *) collect2='collect2$(exeext)' ;;
1885 AC_SUBST([collect2])
1887 # Add a definition of USE_COLLECT2 if system wants one.
1888 case $use_collect2 in
1889 no) use_collect2= ;;
1892 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1893 xm_defines="${xm_defines} USE_COLLECT2"
1894 case $host_can_use_collect2 in
1896 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1902 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1903 [Define to the name of the LTO plugin DSO that must be
1904 passed to the linker's -plugin=LIB option.])
1906 # ---------------------------
1907 # Assembler & linker features
1908 # ---------------------------
1910 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1911 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1912 # However when ld-new is first executed from the build tree, libtool will
1913 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1914 # to the build tree. While doing this we need to use the previous-stage
1915 # linker, or we have an infinite loop. The presence of a shell script as
1916 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1917 # the gcc/collect-ld script. So we need to know how libtool works, or
1918 # exec-tool will fail.
1920 m4_defun([_LT_CONFIG_COMMANDS], [])
1923 AC_SUBST(enable_fast_install)
1925 # Identify the assembler which will work hand-in-glove with the newly
1926 # built GCC, so that we can examine its features. This is the assembler
1927 # which will be driven by the driver program.
1929 # If build != host, and we aren't building gas in-tree, we identify a
1930 # build->target assembler and hope that it will have the same features
1931 # as the host->target assembler we'll be using.
1932 gcc_cv_gas_major_version=
1933 gcc_cv_gas_minor_version=
1934 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1936 m4_pattern_allow([AS_FOR_TARGET])dnl
1937 AS_VAR_SET_IF(gcc_cv_as,, [
1938 if test -x "$DEFAULT_ASSEMBLER"; then
1939 gcc_cv_as="$DEFAULT_ASSEMBLER"
1940 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1941 && test -f ../gas/Makefile \
1942 && test x$build = x$host; then
1943 gcc_cv_as=../gas/as-new$build_exeext
1944 elif test -x as$build_exeext; then
1945 # Build using assembler in the current directory.
1946 gcc_cv_as=./as$build_exeext
1947 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1948 gcc_cv_as="$AS_FOR_TARGET"
1950 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1953 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1954 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1955 case "$ORIGINAL_AS_FOR_TARGET" in
1956 ./as | ./as$build_exeext) ;;
1957 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1960 AC_MSG_CHECKING(what assembler to use)
1961 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1962 # Single tree build which includes gas. We want to prefer it
1963 # over whatever linker top-level may have detected, since
1964 # we'll use what we're building after installation anyway.
1965 AC_MSG_RESULT(newly built gas)
1967 _gcc_COMPUTE_GAS_VERSION
1968 in_tree_gas_is_elf=no
1969 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1970 || (grep 'obj_format = multi' ../gas/Makefile \
1971 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1973 in_tree_gas_is_elf=yes
1976 AC_MSG_RESULT($gcc_cv_as)
1980 # Identify the linker which will work hand-in-glove with the newly
1981 # built GCC, so that we can examine its features. This is the linker
1982 # which will be driven by the driver program.
1984 # If build != host, and we aren't building gas in-tree, we identify a
1985 # build->target linker and hope that it will have the same features
1986 # as the host->target linker we'll be using.
1987 gcc_cv_gld_major_version=
1988 gcc_cv_gld_minor_version=
1989 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1990 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1992 AS_VAR_SET_IF(gcc_cv_ld,, [
1993 if test -x "$DEFAULT_LINKER"; then
1994 gcc_cv_ld="$DEFAULT_LINKER"
1995 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1996 && test -f ../ld/Makefile \
1997 && test x$build = x$host; then
1998 gcc_cv_ld=../ld/ld-new$build_exeext
1999 elif test -x collect-ld$build_exeext; then
2000 # Build using linker in the current directory.
2001 gcc_cv_ld=./collect-ld$build_exeext
2002 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2003 gcc_cv_ld="$LD_FOR_TARGET"
2005 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2008 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2009 PLUGIN_LD=`basename $gcc_cv_ld`
2010 AC_ARG_WITH(plugin-ld,
2011 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2012 [if test x"$withval" != x; then
2013 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2014 PLUGIN_LD="$withval"
2016 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2017 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2019 # Check to see if we are using gold instead of ld
2020 AC_MSG_CHECKING(whether we are using gold)
2022 if test x$gcc_cv_ld != x; then
2023 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2024 | grep "GNU gold" > /dev/null; then
2028 AC_MSG_RESULT($ld_is_gold)
2030 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2031 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2032 case "$ORIGINAL_LD_FOR_TARGET" in
2033 ./collect-ld | ./collect-ld$build_exeext) ;;
2034 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2037 AC_MSG_CHECKING(what linker to use)
2038 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2039 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2040 # Single tree build which includes ld. We want to prefer it
2041 # over whatever linker top-level may have detected, since
2042 # we'll use what we're building after installation anyway.
2043 AC_MSG_RESULT(newly built ld)
2045 in_tree_ld_is_elf=no
2046 if (grep 'EMUL = .*elf' ../ld/Makefile \
2047 || grep 'EMUL = .*linux' ../ld/Makefile \
2048 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2049 in_tree_ld_is_elf=yes
2050 elif test "$ld_is_gold" = yes; then
2051 in_tree_ld_is_elf=yes
2053 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
2056 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2057 if test x$gcc_cv_gld_version != x; then
2061 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2062 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2065 AC_MSG_RESULT($gcc_cv_ld)
2069 # Figure out what nm we will be using.
2070 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2071 AS_VAR_SET_IF(gcc_cv_nm,, [
2072 if test -f $gcc_cv_binutils_srcdir/configure.in \
2073 && test -f ../binutils/Makefile \
2074 && test x$build = x$host; then
2075 gcc_cv_nm=../binutils/nm-new$build_exeext
2076 elif test -x nm$build_exeext; then
2077 gcc_cv_nm=./nm$build_exeext
2078 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2079 gcc_cv_nm="$NM_FOR_TARGET"
2081 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2084 AC_MSG_CHECKING(what nm to use)
2085 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2086 # Single tree build which includes binutils.
2087 AC_MSG_RESULT(newly built nm)
2090 AC_MSG_RESULT($gcc_cv_nm)
2094 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2095 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2096 case "$ORIGINAL_NM_FOR_TARGET" in
2097 ./nm | ./nm$build_exeext) ;;
2098 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2102 # Figure out what objdump we will be using.
2103 AS_VAR_SET_IF(gcc_cv_objdump,, [
2104 if test -f $gcc_cv_binutils_srcdir/configure.in \
2105 && test -f ../binutils/Makefile \
2106 && test x$build = x$host; then
2107 # Single tree build which includes binutils.
2108 gcc_cv_objdump=../binutils/objdump$build_exeext
2109 elif test -x objdump$build_exeext; then
2110 gcc_cv_objdump=./objdump$build_exeext
2111 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2112 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2114 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2117 AC_MSG_CHECKING(what objdump to use)
2118 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2119 # Single tree build which includes binutils.
2120 AC_MSG_RESULT(newly built objdump)
2121 elif test x$gcc_cv_objdump = x; then
2122 AC_MSG_RESULT(not found)
2124 AC_MSG_RESULT($gcc_cv_objdump)
2127 # Figure out what readelf we will be using.
2128 AS_VAR_SET_IF(gcc_cv_readelf,, [
2129 if test -f $gcc_cv_binutils_srcdir/configure.in \
2130 && test -f ../binutils/Makefile \
2131 && test x$build = x$host; then
2132 # Single tree build which includes binutils.
2133 gcc_cv_readelf=../binutils/readelf$build_exeext
2134 elif test -x readelf$build_exeext; then
2135 gcc_cv_readelf=./readelf$build_exeext
2137 AC_PATH_PROG(gcc_cv_readelf, readelf)
2140 AC_MSG_CHECKING(what readelf to use)
2141 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2142 # Single tree build which includes binutils.
2143 AC_MSG_RESULT(newly built readelf)
2144 elif test x$gcc_cv_readelf = x; then
2145 AC_MSG_RESULT(not found)
2147 AC_MSG_RESULT($gcc_cv_readelf)
2150 # Figure out what assembler alignment features are present.
2151 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2155 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2156 [Define if your assembler supports .balign and .p2align.])])
2158 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2161 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2162 [Define if your assembler supports specifying the maximum number
2163 of bytes to skip when using the GAS .p2align command.])])
2165 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2168 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2169 [Define if your assembler supports .literal16.])])
2171 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2173 [conftest_label1: .word 0
2175 conftest_label2: .word 0
2177 [if test x$gcc_cv_nm != x; then
2178 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2179 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2180 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2182 else gcc_cv_as_subsection_m1=yes
2184 rm -f conftest.nm1 conftest.nm2
2186 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2187 [Define if your assembler supports .subsection and .subsection -1 starts
2188 emitting at the beginning of your section.])])
2190 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2193 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2195 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2197 [ .weakref foobar, barfnot],,
2198 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2200 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2203 .NSUBSPA $CODE$,COMDAT],,
2204 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2206 # .hidden needs to be supported in both the assembler and the linker,
2207 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2208 # This is irritatingly difficult to feature test for; we have to check the
2209 # date string after the version number. If we've got an in-tree
2210 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2212 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2213 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2217 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2218 # STV_HIDDEN, so disable .hidden support if so.
2220 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2221 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2222 cat > conftest.s <<EOF
2229 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2230 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2231 grep '\.hidden default' > /dev/null; then
2234 gcc_cv_as_hidden=yes
2237 # Assume bug is present if objdump is missing.
2242 gcc_cv_as_hidden=yes
2247 # Darwin as has some visibility support, though with a different syntax.
2248 gcc_cv_as_hidden=yes
2252 # gnu_indirect_function type is an extension proposed at
2253 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2254 # selection of function implementation
2255 AC_ARG_ENABLE(gnu-indirect-function,
2256 [AS_HELP_STRING([--enable-gnu-indirect-function],
2257 [enable the use of the @gnu_indirect_function to glibc systems])],
2258 [case $enable_gnu_indirect_function in
2260 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2261 Valid choices are 'yes' and 'no'.]) ;;
2263 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2264 if test x$enable_gnu_indirect_function = xyes; then
2265 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2266 [Define if your system supports gnu indirect functions.])
2270 if test $in_tree_ld != yes ; then
2271 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2272 if echo "$ld_ver" | grep GNU > /dev/null; then
2273 if test x"$ld_is_gold" = xyes; then
2274 # GNU gold --version looks like this:
2276 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2278 # We extract the binutils version which is more familiar and specific
2279 # than the gold version.
2280 ld_vers=`echo $ld_ver | sed -n \
2281 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2283 # GNU ld --version looks like this:
2285 # GNU ld (GNU Binutils) 2.21.51.20110225
2286 ld_vers=`echo $ld_ver | sed -n \
2287 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2289 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2290 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2291 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2292 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2297 # Solaris 2 ld -V output looks like this for a regular version:
2299 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2301 # but test versions add stuff at the end:
2303 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2305 ld_ver=`$gcc_cv_ld -V 2>&1`
2306 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2307 ld_vers=`echo $ld_ver | sed -n \
2308 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2309 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2310 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2318 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2319 [[if test $in_tree_ld = yes ; then
2321 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2322 && test $in_tree_ld_is_elf = yes; then
2323 gcc_cv_ld_hidden=yes
2326 gcc_cv_ld_hidden=yes
2327 if test x"$ld_is_gold" = xyes; then
2329 elif echo "$ld_ver" | grep GNU > /dev/null; then
2330 if test 0"$ld_date" -lt 20020404; then
2331 if test -n "$ld_date"; then
2332 # If there was date string, but was earlier than 2002-04-04, fail
2334 elif test -z "$ld_vers"; then
2335 # If there was no date string nor ld version number, something is wrong
2338 test -z "$ld_vers_patch" && ld_vers_patch=0
2339 if test "$ld_vers_major" -lt 2; then
2341 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2342 gcc_cv_ld_hidden="no"
2343 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2351 # Darwin ld has some visibility support.
2352 gcc_cv_ld_hidden=yes
2354 hppa64*-*-hpux* | ia64*-*-hpux*)
2355 gcc_cv_ld_hidden=yes
2358 # .hidden support was backported to Solaris 8, starting with ld
2360 if test "$ld_vers_minor" -ge 276; then
2361 gcc_cv_ld_hidden=yes
2366 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2367 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2368 # .symbolic was only added in Solaris 9 12/02.
2369 gcc_cv_ld_hidden=yes
2377 libgcc_visibility=no
2378 AC_SUBST(libgcc_visibility)
2379 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2380 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2381 libgcc_visibility=yes
2382 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2383 [Define if your assembler and linker support .hidden.])
2386 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2387 gcc_cv_ld_ro_rw_mix=unknown
2388 if test $in_tree_ld = yes ; then
2389 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2390 && test $in_tree_ld_is_elf = yes; then
2391 gcc_cv_ld_ro_rw_mix=read-write
2393 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2394 echo '.section myfoosect, "a"' > conftest1.s
2395 echo '.section myfoosect, "aw"' > conftest2.s
2396 echo '.byte 1' >> conftest2.s
2397 echo '.section myfoosect, "a"' > conftest3.s
2398 echo '.byte 0' >> conftest3.s
2399 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2400 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2401 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2402 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2403 conftest2.o conftest3.o > /dev/null 2>&1; then
2404 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2405 | sed -e '/myfoosect/!d' -e N`
2406 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2407 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2408 gcc_cv_ld_ro_rw_mix=read-only
2410 gcc_cv_ld_ro_rw_mix=read-write
2415 rm -f conftest.* conftest[123].*
2418 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2419 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2420 [Define if your linker links a mix of read-only
2421 and read-write sections into a read-write section.])
2423 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2425 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2426 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2434 [[# GAS versions before 2.11 do not support uleb128,
2435 # despite appearing to.
2436 # ??? There exists an elf-specific test that will crash
2437 # the assembler. Perhaps it's better to figure out whether
2438 # arbitrary sections are supported and try the test.
2439 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2440 if echo "$as_ver" | grep GNU > /dev/null; then
2441 as_vers=`echo $as_ver | sed -n \
2442 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2443 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2444 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2445 if test $as_major -eq 2 && test $as_minor -lt 11
2447 else gcc_cv_as_leb128=yes
2450 [AC_DEFINE(HAVE_AS_LEB128, 1,
2451 [Define if your assembler supports .sleb128 and .uleb128.])])
2453 # Check if we have assembler support for unwind directives.
2454 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2461 .cfi_escape 1, 2, 3, 4, 5
2465 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2466 # read-only and read-write sections, we need to make sure that the
2467 # assembler used emits read-write .eh_frame sections.
2468 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2469 if test "x$gcc_cv_objdump" != x; then
2470 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2471 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2472 gcc_cv_as_cfi_directive=no
2475 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2476 # On Solaris/x86, make sure that GCC and gas agree on using
2477 # read-only .eh_frame sections for 64-bit.
2478 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2479 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2480 sed -e /.eh_frame/!d -e N | \
2481 grep READONLY > /dev/null; then
2482 gcc_cv_as_cfi_directive=yes
2484 gcc_cv_as_cfi_directive=no
2488 gcc_cv_as_cfi_directive=yes
2493 # no objdump, err on the side of caution
2494 gcc_cv_as_cfi_directive=no
2497 gcc_cv_as_cfi_directive=yes
2501 gcc_cv_as_cfi_directive=yes
2504 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2505 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2509 .cfi_adjust_cfa_offset 64
2511 .cfi_adjust_cfa_offset 128
2514 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2515 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2516 gcc_cv_as_cfi_advance_working=yes
2520 # no objdump, err on the side of caution
2521 gcc_cv_as_cfi_advance_working=no
2523 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2524 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2525 [`if test $gcc_cv_as_cfi_directive = yes \
2526 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2527 [Define 0/1 if your assembler supports CFI directives.])
2529 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2530 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2531 gcc_cv_as_cfi_personality_directive, ,,
2534 .cfi_personality 0, symbol
2536 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2537 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2538 then echo 1; else echo 0; fi`],
2539 [Define 0/1 if your assembler supports .cfi_personality.])
2541 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2542 gcc_cv_as_cfi_sections_directive, ,,
2544 .cfi_sections .debug_frame, .eh_frame
2548 win32 | pe | cygwin* | mingw32* | uwin*)
2549 # Need to check that we generated the correct relocation for the
2550 # .debug_frame section. This was fixed for binutils 2.21.
2551 gcc_cv_as_cfi_sections_directive=no
2552 if test "x$gcc_cv_objdump" != x; then
2553 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2554 grep secrel > /dev/null; then
2555 gcc_cv_as_cfi_sections_directive=yes
2560 gcc_cv_as_cfi_sections_directive=yes
2563 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2564 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2565 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2566 then echo 1; else echo 0; fi`],
2567 [Define 0/1 if your assembler supports .cfi_sections.])
2569 # GAS versions up to and including 2.11.0 may mis-optimize
2571 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2579 .section .eh_frame,"aw",@progbits
2581 .4byte .LECIE1-.LSCIE1
2595 .4byte .LEFDE1-.LASFDE1
2597 .4byte .LASFDE1-__FRAME_BEGIN__
2605 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2606 cat > conftest.lit <<EOF
2607 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2608 0010 01000000 12000000 18000000 00000000 ................
2609 0020 08000000 04080000 0044 .........D @&t@
2611 cat > conftest.big <<EOF
2612 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2613 0010 00000001 00000012 00000018 00000000 ................
2614 0020 00000008 04000000 0844 .........D @&t@
2616 # If the assembler didn't choke, and we can objdump,
2617 # and we got the correct data, then succeed.
2618 # The text in the here-document typically retains its unix-style line
2619 # endings, while the output of objdump will use host line endings.
2620 # Therefore, use diff -b for the comparisons.
2621 if test x$gcc_cv_objdump != x \
2622 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2623 | tail -3 > conftest.got \
2624 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2625 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2627 gcc_cv_as_eh_frame=yes
2628 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2629 gcc_cv_as_eh_frame=buggy
2631 # Uh oh, what do we do now?
2632 gcc_cv_as_eh_frame=no
2635 if test $gcc_cv_as_eh_frame = buggy; then
2636 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2637 [Define if your assembler mis-optimizes .eh_frame data.])
2640 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2641 [elf,2,12,0], [--fatal-warnings],
2642 [.section .rodata.str, "aMS", @progbits, 1])
2643 if test $gcc_cv_as_shf_merge = no; then
2644 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2645 [elf,2,12,0], [--fatal-warnings],
2646 [.section .rodata.str, "aMS", %progbits, 1])
2648 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2649 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2650 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2652 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2653 gcc_cv_as_comdat_group,
2654 [elf,2,16,0], [--fatal-warnings],
2655 [.section .text,"axG",@progbits,.foo,comdat])
2656 if test $gcc_cv_as_comdat_group = yes; then
2657 gcc_cv_as_comdat_group_percent=no
2658 gcc_cv_as_comdat_group_group=no
2660 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2661 gcc_cv_as_comdat_group_percent,
2662 [elf,2,16,0], [--fatal-warnings],
2663 [.section .text,"axG",%progbits,.foo,comdat])
2664 if test $gcc_cv_as_comdat_group_percent = yes; then
2665 gcc_cv_as_comdat_group_group=no
2668 # Sun as uses a completely different syntax.
2673 .group foo,".text%foo",#comdat
2674 .section ".text%foo", #alloc,#execinstr,#progbits
2679 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2681 .group foo,.text%foo,#comdat
2682 .section .text%foo, "ax", @progbits
2688 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2689 gcc_cv_as_comdat_group_group,
2695 if test x"$ld_is_gold" = xyes; then
2697 elif test $in_tree_ld = yes ; then
2699 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2700 && test $in_tree_ld_is_elf = yes; then
2703 elif echo "$ld_ver" | grep GNU > /dev/null; then
2705 if test 0"$ld_date" -lt 20050308; then
2706 if test -n "$ld_date"; then
2707 # If there was date string, but was earlier than 2005-03-08, fail
2709 elif test "$ld_vers_major" -lt 2; then
2711 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2718 *-*-solaris2.1[1-9]*)
2720 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2721 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2724 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2725 # least ld version 1.2267.
2726 if test "$ld_vers_major" -gt 1; then
2728 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2730 elif test "$ld_vers_minor" -ge 2267; then
2735 # Assume linkers other than GNU ld don't support COMDAT group.
2741 # Allow overriding the automatic COMDAT group tests above.
2742 AC_ARG_ENABLE(comdat,
2743 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2744 [comdat_group="$enable_comdat"])
2745 if test $comdat_group = no; then
2746 gcc_cv_as_comdat_group=no
2747 gcc_cv_as_comdat_group_percent=no
2748 gcc_cv_as_comdat_group_group=no
2750 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2751 [`if test $gcc_cv_as_comdat_group = yes \
2752 || test $gcc_cv_as_comdat_group_percent = yes \
2753 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2754 [Define 0/1 if your assembler and linker support COMDAT groups.])
2756 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2757 gcc_cv_as_discriminator,
2761 .loc 1 1 0 discriminator 1],,
2762 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2763 [Define if your assembler supports the .loc discriminator sub-directive.])])
2765 # Thread-local storage - the check is heavily parameterized.
2774 .section ".tdata","awT",@progbits
2777 ldq $27,__tls_get_addr($29) !literal!1
2778 lda $16,foo($29) !tlsgd!1
2779 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2780 ldq $27,__tls_get_addr($29) !literal!2
2781 lda $16,foo($29) !tlsldm!2
2782 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2783 ldq $1,foo($29) !gotdtprel
2784 ldah $2,foo($29) !dtprelhi
2785 lda $3,foo($2) !dtprello
2786 lda $4,foo($29) !dtprel
2787 ldq $1,foo($29) !gottprel
2788 ldah $2,foo($29) !tprelhi
2789 lda $3,foo($2) !tprello
2790 lda $4,foo($29) !tprel'
2793 tls_as_opt=--fatal-warnings
2795 cris-*-*|crisv32-*-*)
2797 .section ".tdata","awT",@progbits
2804 tls_as_opt=--fatal-warnings
2808 .section ".tdata","awT",@progbits
2820 .section ".tdata","awT",@progbits
2824 addil LT%foo-$tls_gdidx$,gp
2825 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2828 addil LT%foo-$tls_ldidx$,gp
2830 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2831 addil LR%foo-$tls_dtpoff$,%ret0
2832 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2834 addil LT%foo-$tls_ieoff$,gp
2835 ldw RT%foo-$tls_ieoff$(%r1),%t2
2838 addil LR%foo-$tls_leoff$,%t1
2839 ldo RR%foo-$tls_leoff$(%r1),%t2'
2842 tls_as_opt=--fatal-warnings
2846 .section ".tdata","awT",%progbits
2857 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2859 i[34567]86-*-solaris2.*)
2861 tga_func=___tls_get_addr
2863 x86_64-*-solaris2.1[0-9]*)
2865 tga_func=__tls_get_addr
2871 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2873 .section .tdata,"awt",@progbits'
2877 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2878 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2882 .section ".tdata","awT",@progbits'
2885 tls_as_opt="--fatal-warnings"
2887 conftest_s="$conftest_s
2891 leal foo@tlsgd(,%ebx,1), %eax
2892 leal foo@tlsldm(%ebx), %eax
2893 leal foo@dtpoff(%eax), %edx
2894 movl foo@gottpoff(%ebx), %eax
2895 subl foo@gottpoff(%ebx), %eax
2896 addl foo@gotntpoff(%ebx), %eax
2897 movl foo@indntpoff, %eax
2898 movl \$foo@tpoff, %eax
2899 subl \$foo@tpoff, %eax
2900 leal foo@ntpoff(%ecx), %eax"
2904 .section ".tdata","awT",@progbits
2908 leaq foo@TLSGD(%rip), %rdi
2909 leaq foo@TLSLD(%rip), %rdi
2910 leaq foo@DTPOFF(%rax), %rdx
2911 movq foo@GOTTPOFF(%rip), %rax
2912 movq $foo@TPOFF, %rax'
2915 tls_as_opt=--fatal-warnings
2919 .section ".tdata","awT",@progbits
2922 addl r16 = @ltoff(@dtpmod(foo#)), gp
2923 addl r17 = @ltoff(@dtprel(foo#)), gp
2924 addl r18 = @ltoff(@tprel(foo#)), gp
2925 addl r19 = @dtprel(foo#), gp
2926 adds r21 = @dtprel(foo#), r13
2927 movl r23 = @dtprel(foo#)
2928 addl r20 = @tprel(foo#), gp
2929 adds r22 = @tprel(foo#), r13
2930 movl r24 = @tprel(foo#)'
2933 tls_as_opt=--fatal-warnings
2937 .section .tdata,"awT",@progbits
2941 addiu $4, $28, %tlsgd(x)
2942 addiu $4, $28, %tlsldm(x)
2943 lui $4, %dtprel_hi(x)
2944 addiu $4, $4, %dtprel_lo(x)
2945 lw $4, %gottprel(x)($28)
2946 lui $4, %tprel_hi(x)
2947 addiu $4, $4, %tprel_lo(x)'
2950 tls_as_opt='-32 --fatal-warnings'
2954 .section .tdata,"awT",@progbits
2959 move.l x@TLSGD(%a5),%a0
2960 move.l x@TLSLDM(%a5),%a0
2961 move.l x@TLSLDO(%a5),%a0
2962 move.l x@TLSIE(%a5),%a0
2963 move.l x@TLSLE(%a5),%a0'
2966 tls_as_opt='--fatal-warnings'
2970 .section ".tdata","awT",@progbits
2978 addi 3,31,ld0@got@tlsgd
2980 addi 3,31,x1@got@tlsld
2983 addis 9,3,x2@dtprel@ha
2984 addi 9,9,x2@dtprel@l
2985 lwz 9,x3@got@tprel(31)
2988 addis 9,2,x2@tprel@ha
2989 addi 9,9,x2@tprel@l'
2992 tls_as_opt="-a32 --fatal-warnings"
2996 .section ".tdata","awT",@progbits
3004 addi 3,2,ld0@got@tlsgd
3010 addi 3,2,x1@got@tlsld
3016 addis 9,3,x2@dtprel@ha
3017 addi 9,9,x2@dtprel@l
3020 ld 9,x3@got@dtprel(2)
3026 tls_as_opt="-a64 --fatal-warnings"
3030 .section ".tdata","awT",@progbits
3039 l %r1,foo@GOTNTPOFF(%r12)
3040 l %r1,0(%r1):tls_load:foo
3041 bas %r14,0(%r1,%r13):tls_gdcall:foo
3042 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3045 tls_as_opt="-m31 --fatal-warnings"
3049 .section ".tdata","awT",@progbits
3057 lg %r1,foo@GOTNTPOFF(%r12)
3058 larl %r1,foo@INDNTPOFF
3059 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3060 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3063 tls_as_opt="-m64 -Aesame --fatal-warnings"
3065 sh-*-* | sh[34]-*-*)
3067 .section ".tdata","awT",@progbits
3077 tls_as_opt=--fatal-warnings
3081 sparc*-sun-solaris2.*)
3083 tga_func=__tls_get_addr
3089 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3091 .section ".tdata",#alloc,#write,#tls'
3096 .section ".tdata","awT",@progbits'
3099 tls_as_opt="-32 --fatal-warnings"
3101 conftest_s="$conftest_s
3104 sethi %tgd_hi22(foo), %o0
3105 add %o0, %tgd_lo10(foo), %o1
3106 add %l7, %o1, %o0, %tgd_add(foo)
3107 call __tls_get_addr, %tgd_call(foo)
3108 sethi %tldm_hi22(foo), %l1
3109 add %l1, %tldm_lo10(foo), %l2
3110 add %l7, %l2, %o0, %tldm_add(foo)
3111 call __tls_get_addr, %tldm_call(foo)
3112 sethi %tldo_hix22(foo), %l3
3113 xor %l3, %tldo_lox10(foo), %l4
3114 add %o0, %l4, %l5, %tldo_add(foo)
3115 sethi %tie_hi22(foo), %o3
3116 add %o3, %tie_lo10(foo), %o3
3117 ld [%l7 + %o3], %o2, %tie_ld(foo)
3118 add %g7, %o2, %o4, %tie_add(foo)
3119 sethi %tle_hix22(foo), %l1
3120 xor %l1, %tle_lox10(foo), %o5
3121 ld [%g7 + %o5], %o1"
3125 .section ".tdata","awT",@progbits
3128 movi a8, foo@TLSFUNC
3129 movi a10, foo@TLSARG
3130 callx8.tls a8, foo@TLSCALL'
3137 if test "x$enable_tls" = xno ; then
3138 : # TLS explicitly disabled.
3139 elif test "x$enable_tls" = xyes ; then
3140 set_have_as_tls=yes # TLS explicitly enabled.
3141 elif test -z "$tls_first_major"; then
3142 : # If we don't have a check, assume no support.
3144 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3145 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3146 [set_have_as_tls=yes])
3150 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3151 # with TLS support are in use, native TLS cannot work.
3155 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3156 # gld with TLS support are in use, native TLS cannot work.
3159 # TLS was introduced in the Solaris 9 FCS release and backported to
3160 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3161 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3162 # ld and GCC don't support any longer.
3164 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3166 # Check ld and ld.so.1 TLS support.
3167 if echo "$ld_ver" | grep GNU > /dev/null; then
3168 # Assume all interesting versions of GNU ld have TLS support.
3169 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3173 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3175 min_tls_ld_vers_minor=280
3177 # Solaris 8/SPARC ld has TLS support since version 1.272.
3178 sparc*-*-solaris2.8)
3179 min_tls_ld_vers_minor=272
3181 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3183 min_tls_ld_vers_minor=374
3185 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3186 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3187 min_tls_ld_vers_minor=343
3190 if test "$ld_vers_major" -gt 1 || \
3191 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3197 AC_MSG_RESULT($ld_tls_support)
3200 save_LDFLAGS="$LDFLAGS"
3204 AC_MSG_CHECKING(alternate thread library)
3206 # TLS support was backported to Solaris 8 patches, but only lives in
3207 # the alternate thread library which became the default in Solaris 9.
3208 # We want to always use that, irrespective of TLS support.
3210 # Take multilib subdir into account. There's no spec to handle
3211 # this. The 64 symlink exists since Solaris 8.
3212 lwp_dir=/usr/lib/lwp
3213 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3214 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3221 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3222 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3223 [Define to the linker flags to use for -pthread.])
3224 AC_MSG_RESULT($lwp_dir)
3226 AC_MSG_CHECKING(library containing $tga_func)
3227 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3228 # (32-bit x86) only lived in libthread, so check for that. Keep
3229 # set_have_as_tls if found, disable if not.
3230 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3231 # Clear LIBS if we cannot support TLS.
3232 if test $set_have_as_tls = no; then
3235 # Always define LIB_TLS_SPEC, even without TLS support.
3236 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3237 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3238 AC_MSG_RESULT($LIBS)
3241 LDFLAGS="$save_LDFLAGS"
3244 if test $set_have_as_tls = yes ; then
3245 AC_DEFINE(HAVE_AS_TLS, 1,
3246 [Define if your assembler and linker support thread-local storage.])
3249 # Target-specific assembler checks.
3251 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3252 gcc_cv_ld_static_dynamic=no
3253 gcc_cv_ld_static_option='-Bstatic'
3254 gcc_cv_ld_dynamic_option='-Bdynamic'
3255 if test $in_tree_ld = yes ; then
3256 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3257 gcc_cv_ld_static_dynamic=yes
3259 elif test x$gcc_cv_ld != x; then
3260 # Check if linker supports -Bstatic/-Bdynamic option
3261 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3262 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3263 gcc_cv_ld_static_dynamic=yes
3266 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3268 gcc_cv_ld_static_dynamic=yes
3269 gcc_cv_ld_static_option="-noso"
3270 gcc_cv_ld_dynamic_option="-so_archive"
3272 # HP-UX ld uses -a flags to select between shared and archive.
3274 if test x"$gnu_ld" = xno; then
3275 gcc_cv_ld_static_dynamic=yes
3276 gcc_cv_ld_static_option="-aarchive_shared"
3277 gcc_cv_ld_dynamic_option="-adefault"
3280 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3282 gcc_cv_ld_static_dynamic=yes
3284 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3286 gcc_cv_ld_static_dynamic=yes
3291 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3292 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3293 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3294 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3295 [Define to the linker option to disable use of shared objects.])
3296 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3297 [Define to the linker option to enable use of shared objects.])
3299 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3301 if test x"$demangler_in_ld" = xyes; then
3302 AC_MSG_CHECKING(linker --demangle support)
3303 gcc_cv_ld_demangle=no
3304 if test $in_tree_ld = yes; then
3305 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3306 gcc_cv_ld_demangle=yes
3308 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3309 # Check if the GNU linker supports --demangle option
3310 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3311 gcc_cv_ld_demangle=yes
3314 if test x"$gcc_cv_ld_demangle" = xyes; then
3315 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3316 [Define if your linker supports --demangle option.])
3318 AC_MSG_RESULT($gcc_cv_ld_demangle)
3321 AC_MSG_CHECKING(linker plugin support)
3323 if test -f liblto_plugin.la; then
3324 save_ld_ver="$ld_ver"
3325 save_ld_vers_major="$ld_vers_major"
3326 save_ld_vers_minor="$ld_vers_minor"
3327 save_ld_is_gold="$ld_is_gold"
3331 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3333 # FIXME: ld_is_gold?
3334 ld_vers_major="$gcc_cv_gld_major_version"
3335 ld_vers_minor="$gcc_cv_gld_minor_version"
3337 # Determine plugin linker version.
3338 # FIXME: Partial duplicate from above, generalize.
3340 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3341 if echo "$ld_ver" | grep GNU > /dev/null; then
3342 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3344 ld_vers=`echo $ld_ver | sed -n \
3345 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3347 ld_vers=`echo $ld_ver | sed -n \
3348 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3350 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3351 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3356 # Determine plugin support.
3357 if echo "$ld_ver" | grep GNU > /dev/null; then
3358 # Require GNU ld or gold 2.21+ for plugin support by default.
3359 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3361 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3362 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3367 ld_ver="$save_ld_ver"
3368 ld_vers_major="$save_ld_vers_major"
3369 ld_vers_minor="$save_ld_vers_minor"
3370 ld_is_gold="$save_ld_is_gold"
3372 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3373 [Define to the level of your linker's plugin support.])
3374 AC_MSG_RESULT($gcc_cv_lto_plugin)
3377 # All TARGET_ABI_OSF targets.
3378 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3379 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3380 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3383 extbl $3, $2, $3 !lituse_bytoff!1
3384 ldq $2, a($29) !literal!1
3385 ldq $4, b($29) !literal!2
3386 ldq_u $3, 0($2) !lituse_base!1
3387 ldq $27, f($29) !literal!5
3388 jsr $26, ($27), f !lituse_jsr!5
3389 ldah $29, 0($26) !gpdisp!3
3390 lda $0, c($29) !gprel
3391 ldah $1, d($29) !gprelhigh
3392 lda $1, d($1) !gprellow
3393 lda $29, 0($29) !gpdisp!3],,
3394 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3395 [Define if your assembler supports explicit relocations.])])
3396 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3397 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3400 ldq $27, a($29) !literal!1
3401 jsr $26, ($27), a !lituse_jsrdirect!1],,
3402 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3403 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3407 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3408 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3409 [-no-mul-bug-abort], [.text],,
3410 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3411 [Define if your assembler supports the -no-mul-bug-abort option.])])
3415 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3416 [.register %g2, #scratch],,
3417 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3418 [Define if your assembler supports .register.])])
3420 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3422 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3423 [Define if your assembler supports -relax option.])])
3425 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3426 gcc_cv_as_sparc_gotdata_op,,
3433 sethi %gdop_hix22(foo), %g1
3434 xor %g1, %gdop_lox10(foo), %g1
3435 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3436 [if test x$gcc_cv_ld != x \
3437 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3438 if test x$gcc_cv_objdump != x; then
3439 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3440 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3441 gcc_cv_as_sparc_gotdata_op=no
3443 gcc_cv_as_sparc_gotdata_op=yes
3448 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3449 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3451 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3452 gcc_cv_as_sparc_ua_pcrel,,
3460 .uaword %r_disp32(foo)],
3461 [if test x$gcc_cv_ld != x \
3462 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3463 gcc_cv_as_sparc_ua_pcrel=yes
3466 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3467 [Define if your assembler and linker support unaligned PC relative relocs.])
3469 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3470 gcc_cv_as_sparc_ua_pcrel_hidden,,
3475 .uaword %r_disp32(foo)
3476 .byte 0x32, 0x33, 0x34
3481 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3482 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3483 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3484 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3485 if $gcc_cv_objdump -R conftest 2> /dev/null \
3486 | grep 'DISP32' > /dev/null 2>&1; then
3489 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3493 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3494 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3495 ]) # unaligned pcrel relocs
3497 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3498 gcc_cv_as_sparc_offsetable_lo10,,
3501 or %g1, %lo(ab) + 12, %g1
3502 or %g1, %lo(ab + 12), %g1],
3503 [if test x$gcc_cv_objdump != x \
3504 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3505 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3506 gcc_cv_as_sparc_offsetable_lo10=yes
3508 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3509 [Define if your assembler supports offsetable %lo().])])
3511 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3512 gcc_cv_as_sparc_fmaf,,
3515 .register %g2, #scratch
3516 .register %g3, #scratch
3518 fmaddd %f0, %f2, %f4, %f6
3519 addxccc %g1, %g2, %g3
3520 fsrl32 %f2, %f4, %f8
3521 fnaddd %f10, %f12, %f14],,
3522 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3523 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3527 i[34567]86-*-* | x86_64-*-*)
3531 # Full C++ conformance when using a shared libstdc++-v3 requires some
3532 # support from the Cygwin DLL, which in more recent versions exports
3533 # wrappers to aid in interposing and redirecting operators new, delete,
3534 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3535 # are configuring for a version of Cygwin that exports the wrappers.
3536 if test x$host = x$target; then
3537 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3539 # Can't check presence of libc functions during cross-compile, so
3540 # we just have to assume we're building for an up-to-date target.
3541 gcc_ac_cygwin_dll_wrappers=yes
3543 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3544 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3545 [Define if you want to generate code by default that assumes that the
3546 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3549 cygwin* | pe | mingw32*)
3550 # Recent binutils allows the three-operand form of ".comm" on PE. This
3551 # definition is used unconditionally to initialise the default state of
3552 # the target option variable that governs usage of the feature.
3553 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3554 [2,19,52],,[.comm foo,1,32])
3555 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3556 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3557 [Define if your assembler supports specifying the alignment
3558 of objects allocated using the GAS .comm command.])
3559 # Used for DWARF 2 in PE
3560 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3561 gcc_cv_as_ix86_pe_secrel32,
3567 [if test x$gcc_cv_ld != x \
3568 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3569 gcc_cv_as_ix86_pe_secrel32=yes
3572 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3573 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3574 # Test if the assembler supports the extended form of the .section
3575 # directive that specifies section alignment. LTO support uses this,
3576 # but normally only after installation, so we warn but don't fail the
3577 # configure if LTO is enabled but the assembler does not support it.
3578 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3579 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3580 if test x$gcc_cv_as_section_has_align != xyes; then
3581 case ",$enable_languages," in
3583 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3587 # Test if the assembler supports the section flag 'e' for specifying
3588 # an excluded section.
3589 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3593 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3594 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3595 [Define if your assembler supports specifying the section flag e.])
3599 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3600 gcc_cv_as_ix86_filds,,,
3601 [filds mem; fists mem],,
3602 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3603 [Define if your assembler uses filds and fists mnemonics.])])
3605 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3606 gcc_cv_as_ix86_fildq,,,
3607 [fildq mem; fistpq mem],,
3608 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3609 [Define if your assembler uses fildq and fistq mnemonics.])])
3611 gcc_GAS_CHECK_FEATURE([cmov syntax],
3612 gcc_cv_as_ix86_cmov_sun_syntax,,,
3613 [cmovl.l %edx, %eax],,
3614 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3615 [Define if your assembler supports the Sun syntax for cmov.])])
3617 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3618 gcc_cv_as_ix86_ffreep,,,
3620 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3621 [Define if your assembler supports the ffreep mnemonic.])])
3623 gcc_GAS_CHECK_FEATURE([.quad directive],
3624 gcc_cv_as_ix86_quad,,,
3626 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3627 [Define if your assembler supports the .quad directive.])])
3629 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3630 gcc_cv_as_ix86_sahf,,,
3633 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3634 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3636 gcc_GAS_CHECK_FEATURE([swap suffix],
3637 gcc_cv_as_ix86_swap,,,
3638 [movl.s %esp, %ebp],,
3639 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3640 [Define if your assembler supports the swap suffix.])])
3642 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3643 gcc_cv_as_ix86_diff_sect_delta,,,
3651 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3652 [Define if your assembler supports the subtraction of symbols in different sections.])])
3654 # These two are used unconditionally by i386.[ch]; it is to be defined
3655 # to 1 if the feature is present, 0 otherwise.
3656 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3657 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3663 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3664 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3665 [Define true if the assembler supports '.long foo@GOTOFF'.])
3667 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3668 gcc_cv_as_ix86_rep_lock_prefix,,,
3670 lock addl %edi, (%eax,%esi)
3671 lock orl $0, (%esp)],,
3672 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3673 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3675 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3676 gcc_cv_as_ix86_tlsgdplt,,,
3677 [call tls_gd@tlsgdplt],
3678 [if test x$gcc_cv_ld != x \
3679 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3680 gcc_cv_as_ix86_tlsgdplt=yes
3683 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3684 [Define if your assembler and linker support @tlsgdplt.])])
3686 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3687 gcc_cv_as_ix86_tlsldmplt,,,
3688 [call tls_ld@tlsldmplt],
3689 [if test x$gcc_cv_ld != x \
3690 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3691 gcc_cv_as_ix86_tlsldmplt=yes
3694 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3695 [Define if your assembler and linker support @tlsldmplt.])])
3700 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3701 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3703 addl r15 = @ltoffx(x#), gp
3705 ld8.mov r16 = [[r15]], x#],,
3706 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3707 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3713 *-*-aix*) conftest_s=' .machine "pwr5"
3717 gcc_GAS_CHECK_FEATURE([.machine directive support],
3718 gcc_cv_as_machine_directive,,,
3719 [ .machine ppc7400])
3720 if test x$gcc_cv_as_machine_directive != xyes; then
3721 echo "*** This target requires an assembler supporting \".machine\"" >&2
3722 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3723 test x$build = x$target && exit 1
3727 *) conftest_s=' .machine power4
3732 gcc_GAS_CHECK_FEATURE([mfcr field support],
3733 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3735 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3736 [Define if your assembler supports mfcr field.])])
3739 *-*-aix*) conftest_s=' .machine "pwr5"
3742 *) conftest_s=' .machine power5
3747 gcc_GAS_CHECK_FEATURE([popcntb support],
3748 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3750 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3751 [Define if your assembler supports popcntb field.])])
3754 *-*-aix*) conftest_s=' .machine "pwr5x"
3757 *) conftest_s=' .machine power5
3762 gcc_GAS_CHECK_FEATURE([fp round support],
3763 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3765 [AC_DEFINE(HAVE_AS_FPRND, 1,
3766 [Define if your assembler supports fprnd.])])
3769 *-*-aix*) conftest_s=' .machine "pwr6"
3772 *) conftest_s=' .machine power6
3777 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3778 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3780 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3781 [Define if your assembler supports mffgpr and mftgpr.])])
3784 *-*-aix*) conftest_s=' .csect .text[[PR]]
3786 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3790 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3791 *) conftest_s=' .text
3793 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3796 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3797 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3799 [AC_DEFINE(HAVE_AS_REL16, 1,
3800 [Define if your assembler supports R_PPC_REL16 relocs.])])
3803 *-*-aix*) conftest_s=' .machine "pwr6"
3806 *) conftest_s=' .machine power6
3811 gcc_GAS_CHECK_FEATURE([compare bytes support],
3812 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3814 [AC_DEFINE(HAVE_AS_CMPB, 1,
3815 [Define if your assembler supports cmpb.])])
3818 *-*-aix*) conftest_s=' .machine "pwr6"
3821 *) conftest_s=' .machine power6
3826 gcc_GAS_CHECK_FEATURE([decimal float support],
3827 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3829 [AC_DEFINE(HAVE_AS_DFP, 1,
3830 [Define if your assembler supports DFP instructions.])])
3833 *-*-aix*) conftest_s=' .machine "pwr7"
3836 *) conftest_s=' .machine power7
3841 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3842 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3844 [AC_DEFINE(HAVE_AS_VSX, 1,
3845 [Define if your assembler supports VSX instructions.])])
3848 *-*-aix*) conftest_s=' .machine "pwr7"
3851 *) conftest_s=' .machine power7
3856 gcc_GAS_CHECK_FEATURE([popcntd support],
3857 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3859 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3860 [Define if your assembler supports POPCNTD instructions.])])
3863 *-*-aix*) conftest_s=' .csect .text[[PR]]
3865 *) conftest_s=' .text
3869 gcc_GAS_CHECK_FEATURE([lwsync support],
3870 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3872 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3873 [Define if your assembler supports LWSYNC instructions.])])
3876 *-*-aix*) conftest_s=' .machine "476"
3879 *) conftest_s=' .machine "476"
3884 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3885 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3887 [AC_DEFINE(HAVE_AS_DCI, 1,
3888 [Define if your assembler supports the DCI/ICI instructions.])])
3890 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3891 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3892 [.gnu_attribute 4,1],,
3893 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3894 [Define if your assembler supports .gnu_attribute.])])
3896 gcc_GAS_CHECK_FEATURE([tls marker support],
3897 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3898 [ bl __tls_get_addr(x@tlsgd)],,
3899 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3900 [Define if your assembler supports arg info for __tls_get_addr.])])
3904 gcc_GAS_CHECK_FEATURE([.ref support],
3905 gcc_cv_as_aix_ref, [2.21.0],,
3906 [ .csect stuff[[rw]]
3912 [AC_DEFINE(HAVE_AS_REF, 1,
3913 [Define if your assembler supports .ref])])
3919 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3920 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3921 [ lw $4,%gp_rel(foo)($4)],,
3922 [if test x$target_cpu_default = x
3923 then target_cpu_default=MASK_EXPLICIT_RELOCS
3924 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3926 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3927 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3928 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3929 [Define if the assembler understands -mno-shared.])])
3931 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3932 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3933 [.gnu_attribute 4,1],,
3934 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3935 [Define if your assembler supports .gnu_attribute.])])
3937 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3938 gcc_cv_as_mips_dtprelword, [2,18,0],,
3939 [.section .tdata,"awT",@progbits
3943 .dtprelword x+0x8000],,
3944 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3945 [Define if your assembler supports .dtprelword.])])
3947 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3948 gcc_cv_as_mips_dspr1_mult,,,
3958 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3959 [Define if your assembler supports DSPR1 mult.])])
3961 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3962 gcc_cv_as_ld_jalr_reloc=no
3963 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3964 if test $in_tree_ld = yes ; then
3965 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3966 && test $in_tree_ld_is_elf = yes; then
3967 gcc_cv_as_ld_jalr_reloc=yes
3969 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3970 echo ' .ent x' > conftest.s
3971 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3972 echo ' ld $25,%call16(y)($28)' >> conftest.s
3973 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3974 echo '1: jalr $25' >> conftest.s
3975 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3976 echo '1: jalr $25' >> conftest.s
3977 echo ' .end x' >> conftest.s
3978 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3979 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3980 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3981 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3982 gcc_cv_as_ld_jalr_reloc=yes
3988 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3989 if test x$target_cpu_default = x; then
3990 target_cpu_default=MASK_RELAX_PIC_CALLS
3992 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3995 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3997 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3998 [gcc_cv_ld_mips_personality_relaxation],
3999 [gcc_cv_ld_mips_personality_relaxation=no
4000 if test $in_tree_ld = yes ; then
4001 if test "$gcc_cv_gld_major_version" -eq 2 \
4002 -a "$gcc_cv_gld_minor_version" -ge 21 \
4003 -o "$gcc_cv_gld_major_version" -gt 2; then
4004 gcc_cv_ld_mips_personality_relaxation=yes
4006 elif test x$gcc_cv_as != x \
4007 -a x$gcc_cv_ld != x \
4008 -a x$gcc_cv_readelf != x ; then
4009 cat > conftest.s <<EOF
4011 .cfi_personality 0x80,indirect_ptr
4018 .section .data,"aw",@progbits
4022 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4023 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4024 if $gcc_cv_readelf -d conftest 2>&1 \
4025 | grep TEXTREL > /dev/null 2>&1; then
4027 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4028 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4031 gcc_cv_ld_mips_personality_relaxation=yes
4035 rm -f conftest.s conftest.o conftest])
4036 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4037 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4038 [Define if your linker can relax absolute .eh_frame personality
4039 pointers into PC-relative form.])
4044 # Mips and HP-UX need the GNU assembler.
4045 # Linux on IA64 might be able to use the Intel assembler.
4048 mips*-*-* | *-*-hpux* )
4049 if test x$gas_flag = xyes \
4050 || test x"$host" != x"$build" \
4051 || test ! -x "$gcc_cv_as" \
4052 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4055 echo "*** This configuration requires the GNU assembler" >&2
4061 # ??? Not all targets support dwarf2 debug_line, even within a version
4062 # of gas. Moreover, we need to emit a valid instruction to trigger any
4063 # info to the output file. So, as supported targets are added to gas 2.11,
4064 # add some instruction here to (also) show we expect this might work.
4065 # ??? Once 2.11 is released, probably need to add first known working
4066 # version to the per-target configury.
4068 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4069 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4079 if test x"$insn" != x; then
4081 .file 1 \"conftest.s\"
4084 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4085 gcc_cv_as_dwarf2_debug_line,
4086 [elf,2,11,0],, [$conftest_s],
4087 [if test x$gcc_cv_objdump != x \
4088 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4089 | grep debug_line > /dev/null 2>&1; then
4090 gcc_cv_as_dwarf2_debug_line=yes
4093 # The .debug_line file table must be in the exact order that
4094 # we specified the files, since these indices are also used
4095 # by DW_AT_decl_file. Approximate this test by testing if
4096 # the assembler bitches if the same index is assigned twice.
4097 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4098 gcc_cv_as_dwarf2_file_buggy,,,
4102 if test $gcc_cv_as_dwarf2_debug_line = yes \
4103 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4104 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4105 [Define if your assembler supports dwarf2 .file/.loc directives,
4106 and preserves file table indices exactly as given.])
4109 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4110 gcc_cv_as_gdwarf2_flag,
4111 [elf,2,11,0], [--gdwarf2], [$insn],,
4112 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4113 [Define if your assembler supports the --gdwarf2 option.])])
4115 gcc_GAS_CHECK_FEATURE([--gstabs option],
4116 gcc_cv_as_gstabs_flag,
4117 [elf,2,11,0], [--gstabs], [$insn],
4118 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4119 # and warns about it, but still exits successfully. So check for
4121 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4123 else gcc_cv_as_gstabs_flag=yes
4125 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4126 [Define if your assembler supports the --gstabs option.])])
4128 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4129 gcc_cv_as_debug_prefix_map_flag,
4130 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4131 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4132 [Define if your assembler supports the --debug-prefix-map option.])])
4135 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4138 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4139 [Define if your assembler supports .lcomm with an alignment field.])])
4141 AC_ARG_ENABLE(gnu-unique-object,
4142 [AS_HELP_STRING([--enable-gnu-unique-object],
4143 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4144 [case $enable_gnu_unique_object in
4146 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4147 Valid choices are 'yes' and 'no'.]) ;;
4149 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4151 [.type foo, @gnu_unique_object],,
4152 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4153 [[if test x$host = x$build -a x$host = x$target &&
4154 ldd --version 2>/dev/null &&
4155 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4156 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4157 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4158 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4159 if test "$glibcnum" -ge 2011 ; then
4160 enable_gnu_unique_object=yes
4163 if test x$enable_gnu_unique_object = xyes; then
4164 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4165 [Define if your assembler supports @gnu_unique_object.])
4168 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4169 [gcc_cv_as_line_zero],
4170 [gcc_cv_as_line_zero=no
4171 if test $in_tree_gas = yes; then
4172 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4173 elif test "x$gcc_cv_as" != x; then
4174 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4175 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4176 test "x`cat conftest.out`" = x
4178 gcc_cv_as_line_zero=yes
4180 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4181 cat conftest.s >&AS_MESSAGE_LOG_FD
4182 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4183 cat conftest.out >&AS_MESSAGE_LOG_FD
4185 rm -f conftest.o conftest.s conftest.out
4187 if test "x$gcc_cv_as_line_zero" = xyes; then
4188 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4189 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4192 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4193 gcc_cv_ld_eh_frame_hdr=no
4194 if test $in_tree_ld = yes ; then
4195 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4196 && test $in_tree_ld_is_elf = yes; then
4197 gcc_cv_ld_eh_frame_hdr=yes
4199 elif test x$gcc_cv_ld != x; then
4200 if echo "$ld_ver" | grep GNU > /dev/null; then
4201 # Check if linker supports --eh-frame-hdr option
4202 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4203 gcc_cv_ld_eh_frame_hdr=yes
4208 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4209 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4210 gcc_cv_ld_eh_frame_hdr=yes
4216 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4217 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4218 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4219 [Define if your linker supports .eh_frame_hdr.])
4221 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4223 AC_MSG_CHECKING(linker position independent executable support)
4225 if test $in_tree_ld = yes ; then
4226 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4227 && test $in_tree_ld_is_elf = yes; then
4230 elif test x$gcc_cv_ld != x; then
4231 # Check if linker supports -pie option
4232 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4236 if test x"$gcc_cv_ld_pie" = xyes; then
4237 AC_DEFINE(HAVE_LD_PIE, 1,
4238 [Define if your linker supports -pie option.])
4240 AC_MSG_RESULT($gcc_cv_ld_pie)
4242 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4243 gcc_cv_ld_eh_gc_sections=no
4244 if test $in_tree_ld = yes ; then
4245 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4246 && test $in_tree_ld_is_elf = yes; then
4247 gcc_cv_ld_eh_gc_sections=yes
4249 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4250 cat > conftest.s <<EOF
4253 .type _start, @function
4256 .size _start, .-_start
4257 .section .text.foo,"ax",@progbits
4258 .type foo, @function
4262 .section .gcc_except_table.foo,"a",@progbits
4265 .section .eh_frame,"a",@progbits
4268 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4269 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4270 | grep "gc-sections option ignored" > /dev/null; then
4271 gcc_cv_ld_eh_gc_sections=no
4272 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4273 | grep gcc_except_table > /dev/null; then
4274 gcc_cv_ld_eh_gc_sections=yes
4275 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4276 if test x$gcc_cv_as_comdat_group != xyes; then
4277 gcc_cv_ld_eh_gc_sections=no
4278 cat > conftest.s <<EOF
4281 .type _start, @function
4284 .size _start, .-_start
4285 .section .gnu.linkonce.t.foo,"ax",@progbits
4286 .type foo, @function
4290 .section .gcc_except_table.foo,"a",@progbits
4293 .section .eh_frame,"a",@progbits
4296 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4297 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4298 | grep "gc-sections option ignored" > /dev/null; then
4299 gcc_cv_ld_eh_gc_sections=no
4300 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4301 | grep gcc_except_table > /dev/null; then
4302 gcc_cv_ld_eh_gc_sections=yes
4308 rm -f conftest.s conftest.o conftest
4312 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4313 gcc_cv_ld_eh_gc_sections=no
4316 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4317 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4318 [Define if your linker supports garbage collection of
4319 sections in presence of EH frames.])
4321 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4323 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4324 gcc_cv_ld_eh_gc_sections_bug=no
4325 if test $in_tree_ld = yes ; then
4326 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4327 && test $in_tree_ld_is_elf = yes; then
4328 gcc_cv_ld_eh_gc_sections_bug=yes
4330 elif test x$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
4331 gcc_cv_ld_eh_gc_sections_bug=yes
4332 cat > conftest.s <<EOF
4335 .type _start, @function
4338 .size _start, .-_start
4339 .section .text.startup.foo,"ax",@progbits
4340 .type foo, @function
4344 .section .gcc_except_table.foo,"a",@progbits
4347 .section .eh_frame,"a",@progbits
4350 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4351 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4352 | grep "gc-sections option ignored" > /dev/null; then
4354 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4355 | grep gcc_except_table > /dev/null; then
4356 gcc_cv_ld_eh_gc_sections_bug=no
4359 rm -f conftest.s conftest.o conftest
4361 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4362 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4363 [Define if your linker has buggy garbage collection of
4364 sections support when .text.startup.foo like sections are used.])
4366 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4372 AC_CACHE_CHECK(linker --as-needed support,
4373 gcc_cv_ld_as_needed,
4374 [gcc_cv_ld_as_needed=no
4375 if test $in_tree_ld = yes ; then
4376 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4377 && test $in_tree_ld_is_elf = yes; then
4378 gcc_cv_ld_as_needed=yes
4380 elif test x$gcc_cv_ld != x; then
4381 # Check if linker supports --as-needed and --no-as-needed options
4382 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4383 gcc_cv_ld_as_needed=yes
4387 if test x"$gcc_cv_ld_as_needed" = xyes; then
4388 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4389 [Define if your linker supports --as-needed and --no-as-needed options.])
4392 case "$target:$tm_file" in
4393 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4394 AC_CACHE_CHECK(linker support for omitting dot symbols,
4395 gcc_cv_ld_no_dot_syms,
4396 [gcc_cv_ld_no_dot_syms=no
4397 if test $in_tree_ld = yes ; then
4398 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4399 gcc_cv_ld_no_dot_syms=yes
4401 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4402 cat > conftest1.s <<EOF
4406 cat > conftest2.s <<EOF
4407 .section ".opd","aw"
4412 .quad .LEfoo,.TOC.@tocbase,0
4418 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4419 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4420 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4421 gcc_cv_ld_no_dot_syms=yes
4423 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4426 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4427 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4428 [Define if your PowerPC64 linker only needs function descriptor syms.])
4431 AC_CACHE_CHECK(linker large toc support,
4432 gcc_cv_ld_large_toc,
4433 [gcc_cv_ld_large_toc=no
4434 if test $in_tree_ld = yes ; then
4435 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4436 gcc_cv_ld_large_toc=yes
4438 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4439 cat > conftest.s <<EOF
4440 .section ".tbss","awT",@nobits
4446 addis 9,13,ie0@got@tprel@ha
4447 ld 9,ie0@got@tprel@l(9)
4449 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4450 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4451 gcc_cv_ld_large_toc=yes
4453 rm -f conftest conftest.o conftest.s
4456 if test x"$gcc_cv_ld_large_toc" = xyes; then
4457 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4458 [Define if your PowerPC64 linker supports a large TOC.])
4463 AC_CACHE_CHECK(linker --build-id support,
4465 [gcc_cv_ld_buildid=no
4466 if test $in_tree_ld = yes ; then
4467 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4468 "$gcc_cv_gld_minor_version" -ge 18 -o \
4469 "$gcc_cv_gld_major_version" -gt 2 \
4470 && test $in_tree_ld_is_elf = yes; then
4471 gcc_cv_ld_buildid=yes
4473 elif test x$gcc_cv_ld != x; then
4474 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4475 gcc_cv_ld_buildid=yes
4478 if test x"$gcc_cv_ld_buildid" = xyes; then
4479 AC_DEFINE(HAVE_LD_BUILDID, 1,
4480 [Define if your linker supports --build-id.])
4483 AC_ARG_ENABLE(linker-build-id,
4484 [AS_HELP_STRING([--enable-linker-build-id],
4485 [compiler will always pass --build-id to linker])],
4487 enable_linker_build_id=no)
4489 if test x"$enable_linker_build_id" = xyes; then
4490 if test x"$gcc_cv_ld_buildid" = xyes; then
4491 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4492 [Define if gcc should always pass --build-id to linker.])
4494 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4498 # In binutils 2.21, GNU ld gained support for new emulations fully
4499 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4500 AC_CACHE_CHECK(linker *_sol2 emulation support,
4501 gcc_cv_ld_sol2_emulation,
4502 [gcc_cv_ld_sol2_emulation=no
4503 if test $in_tree_ld = yes ; then
4504 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4505 "$gcc_cv_gld_minor_version" -ge 21 -o \
4506 "$gcc_cv_gld_major_version" -gt 2 \
4507 && test $in_tree_ld_is_elf = yes; then
4508 gcc_cv_ld_sol2_emulation=yes
4510 elif test x$gcc_cv_ld != x; then
4511 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4512 grep _sol2 > /dev/null; then
4513 gcc_cv_ld_sol2_emulation=yes
4516 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4517 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4518 [Define if your linker supports the *_sol2 emulations.])
4521 AC_CACHE_CHECK(linker --sysroot support,
4523 [gcc_cv_ld_sysroot=no
4524 if test $in_tree_ld = yes ; then
4525 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4526 gcc_cv_ld_sysroot=yes
4528 elif test x$gcc_cv_ld != x; then
4529 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4530 gcc_cv_ld_sysroot=yes
4533 if test x"$gcc_cv_ld_sysroot" = xyes; then
4534 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4535 [Define if your linker supports --sysroot.])
4538 if test x$with_sysroot = x && test x$host = x$target \
4539 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4540 && test "$prefix" != "NONE"; then
4541 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4542 [Define to PREFIX/include if cpp should also search that directory.])
4545 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4546 if test "x$with_headers" != x; then
4547 target_header_dir=$with_headers
4548 elif test "x$with_sysroot" = x; then
4549 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4550 elif test "x$with_build_sysroot" != "x"; then
4551 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4552 elif test "x$with_sysroot" = xyes; then
4553 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4555 target_header_dir="${with_sysroot}${native_system_header_dir}"
4558 target_header_dir=${native_system_header_dir}
4561 # Test for stack protector support in target C library.
4562 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4563 gcc_cv_libc_provides_ssp,
4564 [gcc_cv_libc_provides_ssp=no
4566 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4567 [# glibc 2.4 and later provides __stack_chk_fail and
4568 # either __stack_chk_guard, or TLS access to stack guard canary.
4569 if test -f $target_header_dir/features.h \
4570 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4571 $target_header_dir/features.h > /dev/null; then
4572 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4573 $target_header_dir/features.h > /dev/null; then
4574 gcc_cv_libc_provides_ssp=yes
4575 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4576 $target_header_dir/features.h > /dev/null \
4577 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4578 $target_header_dir/features.h > /dev/null; then
4579 gcc_cv_libc_provides_ssp=yes
4580 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4581 $target_header_dir/features.h > /dev/null && \
4582 test -f $target_header_dir/bits/uClibc_config.h && \
4583 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4584 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4585 gcc_cv_libc_provides_ssp=yes
4590 # Avoid complicated tests (see
4591 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4592 # simply assert that glibc does provide this, which is true for all
4593 # realistically usable GNU/Hurd configurations.
4594 gcc_cv_libc_provides_ssp=yes;;
4595 *-*-darwin* | *-*-freebsd*)
4596 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4597 [echo "no __stack_chk_fail on this target"])
4599 *) gcc_cv_libc_provides_ssp=no ;;
4602 if test x$gcc_cv_libc_provides_ssp = xyes; then
4603 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4604 [Define if your target C library provides stack protector support])
4607 # Test for <sys/sdt.h> on the target.
4608 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4609 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4611 if test -f $target_header_dir/sys/sdt.h; then
4613 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4614 [Define if your target C library provides sys/sdt.h])
4616 AC_MSG_RESULT($have_sys_sdt_h)
4618 # Check if TFmode long double should be used by default or not.
4619 # Some glibc targets used DFmode long double, but with glibc 2.4
4620 # and later they can use TFmode.
4622 powerpc*-*-linux* | \
4626 AC_ARG_WITH(long-double-128,
4627 [AS_HELP_STRING([--with-long-double-128],
4628 [use 128-bit long double by default])],
4629 gcc_cv_target_ldbl128="$with_long_double_128",
4630 [[gcc_cv_target_ldbl128=no
4631 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4632 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4633 && gcc_cv_target_ldbl128=yes
4637 if test x$gcc_cv_target_ldbl128 = xyes; then
4638 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4639 [Define if TFmode long double should be the default])
4642 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4643 gcc_cv_target_dl_iterate_phdr=unknown
4646 # <link.h> needs both a dl_iterate_phdr declaration and support for
4647 # compilation with largefile support.
4648 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4649 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4650 gcc_cv_target_dl_iterate_phdr=yes
4652 gcc_cv_target_dl_iterate_phdr=no
4656 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4657 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4658 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4659 [Define if your target C library provides the `dl_iterate_phdr' function.])
4661 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4663 # Find out what GC implementation we want, or may, use.
4665 [AS_HELP_STRING([--with-gc={page,zone}],
4666 [choose the garbage collection mechanism to use
4667 with the compiler])],
4674 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4677 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4682 echo "Using $GGC for garbage collection."
4684 # Libraries to use on the host. This will normally be set by the top
4685 # level Makefile. Here we simply capture the value for our Makefile.
4686 if test -z "${HOST_LIBS+set}"; then
4691 # Use the system's zlib library.
4693 zlibinc="-I\$(srcdir)/../zlib"
4694 AC_ARG_WITH(system-zlib,
4695 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4702 dnl Very limited version of automake's enable-maintainer-mode
4704 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4705 dnl maintainer-mode is disabled by default
4706 AC_ARG_ENABLE(maintainer-mode,
4707 [AS_HELP_STRING([--enable-maintainer-mode],
4708 [enable make rules and dependencies not useful
4709 (and sometimes confusing) to the casual installer])],
4710 maintainer_mode=$enableval,
4713 AC_MSG_RESULT($maintainer_mode)
4715 if test "$maintainer_mode" = "yes"; then
4726 # Make empty files to contain the specs and options for each language.
4727 # Then add #include lines to for a compiler that has specs and/or options.
4733 # These (without "all_") are set in each config-lang.in.
4734 # `language' must be a single word so is spelled singularly.
4737 all_outputs='Makefile'
4738 # List of language makefile fragments.
4740 # Additional files for gengtype
4741 all_gtfiles="$target_gtfiles"
4743 # These are the languages that are set in --enable-languages,
4744 # and are available in the GCC tree.
4745 all_selected_languages=
4747 # Add the language fragments.
4748 # Languages are added via two mechanisms. Some information must be
4749 # recorded in makefile variables, these are defined in config-lang.in.
4750 # We accumulate them and plug them into the main Makefile.
4751 # The other mechanism is a set of hooks for each of the main targets
4752 # like `clean', `install', etc.
4754 language_hooks="Make-hooks"
4756 for lang in ${srcdir}/*/config-lang.in
4759 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4761 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4762 if test "x$lang_alias" = x
4764 echo "$lang doesn't set \$language." 1>&2
4767 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4768 subdirs="$subdirs $subdir"
4770 # $gcc_subdir is where the gcc integration files are to be found
4771 # for a language, both for internal compiler purposes (compiler
4772 # sources implementing front-end to GCC tree converters), and for
4773 # build infrastructure purposes (Make-lang.in, etc.)
4775 # This will be <subdir> (relative to $srcdir) if a line like
4776 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4777 # is found in <langdir>/config-lang.in, and will remain <langdir>
4780 # Except for the language alias (fetched above), the regular
4781 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4782 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4783 # only this and the language alias.
4785 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4786 if [ "$gcc_subdir" = "" ]; then
4787 gcc_subdir="$subdir"
4790 case ",$enable_languages," in
4792 all_selected_languages="$all_selected_languages $lang_alias"
4793 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4794 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4806 . ${srcdir}/$gcc_subdir/config-lang.in
4807 if test "x$language" = x
4809 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4814 case ",$enable_languages," in
4817 for i in $subdir_requires; do
4818 test -f "${srcdir}/$i/config-lang.in" && continue
4826 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4827 if test -f $srcdir/$gcc_subdir/lang.opt; then
4828 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4829 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4831 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4832 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4834 all_languages="$all_languages $language"
4835 all_compilers="$all_compilers $compilers"
4836 all_outputs="$all_outputs $outputs"
4837 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4838 case ",$enable_languages," in
4840 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4842 AC_SUBST(enable_lto)
4848 # Pick up gtfiles for c
4850 . ${srcdir}/c-config-lang.in
4851 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4854 for language in $all_selected_languages
4856 check_languages="$check_languages check-$language"
4859 # We link each language in with a set of hooks, reached indirectly via
4860 # lang.${target}. Only do so for selected languages.
4864 target_list="all.cross start.encap rest.encap tags \
4865 install-common install-man install-info install-pdf install-html dvi \
4866 pdf html uninstall info man srcextra srcman srcinfo \
4867 mostlyclean clean distclean maintainer-clean install-plugin"
4869 for t in $target_list
4872 for lang in $all_selected_languages
4876 echo "lang.$t: $x" >> Make-hooks
4880 # Option include files
4883 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4884 option_includes="option-includes.mk"
4885 AC_SUBST_FILE(option_includes)
4893 echo "dir ." > .gdbinit
4894 echo "dir ${srcdir}" >> .gdbinit
4895 if test x$gdb_needs_out_file_path = xyes
4897 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4899 if test "x$subdirs" != x; then
4902 echo "dir ${srcdir}/$s" >> .gdbinit
4905 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4907 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4908 AC_SUBST(gcc_tooldir)
4911 # Find a directory in which to install a shared libgcc.
4913 AC_ARG_ENABLE(version-specific-runtime-libs,
4914 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4915 [specify that runtime libraries should be
4916 installed in a compiler-specific directory])])
4918 # Substitute configuration variables
4921 AC_SUBST(all_compilers)
4922 AC_SUBST(all_gtfiles)
4923 AC_SUBST(all_lang_makefrags)
4924 AC_SUBST(all_languages)
4925 AC_SUBST(all_selected_languages)
4926 AC_SUBST(build_exeext)
4927 AC_SUBST(build_install_headers_dir)
4928 AC_SUBST(build_xm_file_list)
4929 AC_SUBST(build_xm_include_list)
4930 AC_SUBST(build_xm_defines)
4931 AC_SUBST(build_file_translate)
4932 AC_SUBST(check_languages)
4933 AC_SUBST(cpp_install_dir)
4934 AC_SUBST(xmake_file)
4935 AC_SUBST(tmake_file)
4936 AC_SUBST(TM_ENDIAN_CONFIG)
4937 AC_SUBST(TM_MULTILIB_CONFIG)
4938 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4939 AC_SUBST(extra_gcc_objs)
4940 AC_SUBST(user_headers_inc_next_pre)
4941 AC_SUBST(user_headers_inc_next_post)
4942 AC_SUBST(extra_headers_list)
4943 AC_SUBST(extra_objs)
4944 AC_SUBST(extra_passes)
4945 AC_SUBST(extra_programs)
4946 AC_SUBST(float_h_file)
4947 AC_SUBST(gcc_config_arguments)
4948 AC_SUBST(gcc_gxx_include_dir)
4949 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
4950 AC_SUBST(host_exeext)
4951 AC_SUBST(host_xm_file_list)
4952 AC_SUBST(host_xm_include_list)
4953 AC_SUBST(host_xm_defines)
4954 AC_SUBST(out_host_hook_obj)
4956 AC_SUBST(lang_opt_files)
4957 AC_SUBST(lang_specs_files)
4958 AC_SUBST(lang_tree_files)
4959 AC_SUBST(local_prefix)
4961 AC_SUBST(objc_boehm_gc)
4963 AC_SUBST(out_object_file)
4964 AC_SUBST(common_out_file)
4965 AC_SUBST(common_out_object_file)
4966 AC_SUBST(tm_file_list)
4967 AC_SUBST(tm_include_list)
4968 AC_SUBST(tm_defines)
4969 AC_SUBST(tm_p_file_list)
4970 AC_SUBST(tm_p_include_list)
4971 AC_SUBST(xm_file_list)
4972 AC_SUBST(xm_include_list)
4973 AC_SUBST(xm_defines)
4974 AC_SUBST(use_gcc_stdint)
4975 AC_SUBST(c_target_objs)
4976 AC_SUBST(cxx_target_objs)
4977 AC_SUBST(fortran_target_objs)
4978 AC_SUBST(target_cpu_default)
4980 AC_SUBST_FILE(language_hooks)
4983 if test x${build} = x${host} ; then
4984 if test x${host} = x${target} ; then
4985 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4987 echo "Links are now set up to build a cross-compiler" 1>&2
4988 echo " from ${host} to ${target}." 1>&2
4991 if test x${host} = x${target} ; then
4992 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4993 echo " for ${target}." 1>&2
4995 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4996 echo " from ${host} to ${target}." 1>&2
5000 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5001 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5003 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5004 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5006 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5007 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5008 if test "x${CLOOGLIBS}" != "x" ; then
5009 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5012 # Check for plugin support
5013 AC_ARG_ENABLE(plugin,
5014 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5015 enable_plugin=$enableval,
5016 enable_plugin=yes; default_plugin=yes)
5022 if test x$build = x$host; then
5023 export_sym_check="nm${exeext} -g"
5024 elif test x$host = x$target; then
5025 export_sym_check="$gcc_cv_nm -g"
5031 if test x$build = x$host; then
5032 export_sym_check="objdump${exeext} -T"
5033 elif test x$host = x$target; then
5034 export_sym_check="$gcc_cv_objdump -T"
5041 if test x"$enable_plugin" = x"yes"; then
5043 AC_MSG_CHECKING([for exported symbols])
5044 if test "x$export_sym_check" != x; then
5045 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5046 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5047 if $export_sym_check conftest | grep foobar > /dev/null; then
5048 : # No need to use a flag
5049 AC_MSG_RESULT([yes])
5051 AC_MSG_RESULT([yes])
5052 AC_MSG_CHECKING([for -rdynamic])
5053 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5054 if $export_sym_check conftest | grep foobar > /dev/null; then
5056 pluginlibs="-rdynamic"
5061 AC_MSG_RESULT([$plugin_rdynamic])
5064 AC_MSG_RESULT([unable to check])
5069 AC_SEARCH_LIBS([dlopen], [dl])
5070 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5071 pluginlibs="$pluginlibs -ldl"
5075 # Check that we can build shared objects with -fPIC -shared
5076 saved_LDFLAGS="$LDFLAGS"
5077 saved_CFLAGS="$CFLAGS"
5080 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5081 CFLAGS="$CFLAGS -fPIC"
5082 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5085 CFLAGS="$CFLAGS -fPIC"
5086 LDFLAGS="$LDFLAGS -fPIC -shared"
5089 AC_MSG_CHECKING([for -fPIC -shared])
5091 [extern int X;],[return X == 0;],
5092 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5093 [AC_MSG_RESULT([no]); have_pic_shared=no])
5094 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5098 LDFLAGS="$saved_LDFLAGS"
5099 CFLAGS="$saved_CFLAGS"
5101 # If plugin support had been requested but not available, fail.
5102 if test x"$enable_plugin" = x"no" ; then
5103 if test x"$default_plugin" != x"yes"; then
5105 Building GCC with plugin support requires a host that supports
5106 -fPIC, -shared, -ldl and -rdynamic.])
5111 AC_SUBST(pluginlibs)
5112 AC_SUBST(enable_plugin)
5113 if test x"$enable_plugin" = x"yes"; then
5114 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5118 AC_ARG_ENABLE(libquadmath-support,
5119 [AS_HELP_STRING([--disable-libquadmath-support],
5120 [disable libquadmath support for Fortran])],
5121 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5122 ENABLE_LIBQUADMATH_SUPPORT=yes)
5123 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5124 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5125 [Define to 1 to enable libquadmath support])
5129 # Specify what hash style to use by default.
5130 AC_ARG_WITH([linker-hash-style],
5131 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5132 [specify the linker hash style])],
5133 [case x"$withval" in
5135 LINKER_HASH_STYLE=sysv
5138 LINKER_HASH_STYLE=gnu
5141 LINKER_HASH_STYLE=both
5144 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5147 [LINKER_HASH_STYLE=''])
5148 if test x"${LINKER_HASH_STYLE}" != x; then
5149 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5150 [The linker hash style])
5153 # Configure the subdirectories
5154 # AC_CONFIG_SUBDIRS($subdirs)
5156 # Create the Makefile
5157 # and configure language subdirectories
5158 AC_CONFIG_FILES($all_outputs)
5160 AC_CONFIG_COMMANDS([default],
5162 case ${CONFIG_HEADERS} in
5163 *auto-host.h:config.in*)
5166 # Make sure all the subdirs exist.
5167 for d in $subdirs doc build common c-family
5169 test -d $d || mkdir $d
5172 [subdirs='$subdirs'])