2 # Process this file with autoconf to generate a configuration script.
4 # Copyright (C) 1997-2014 Free Software Foundation, Inc.
6 #This file is part of GCC.
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 3, or (at your option) any later
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING3. If not see
20 #<http://www.gnu.org/licenses/>.
22 # --------------------------------
23 # Initialization and sanity checks
24 # --------------------------------
28 AC_CONFIG_SRCDIR(tree.c)
29 AC_CONFIG_HEADER(auto-host.h:config.in)
31 gcc_version=`cat $srcdir/BASE-VER`
33 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [AS_HELP_STRING([--with-local-prefix=DIR],
108 [specifies directory to put local include])],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
127 [specifies directory to put g++ header files])],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 gcc_gxx_include_dir_add_sysroot=0
148 if test "${with_sysroot+set}" = set; then
149 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
150 if test "${gcc_gxx_without_sysroot}"; then
151 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
152 gcc_gxx_include_dir_add_sysroot=1
156 AC_ARG_WITH(cpp_install_dir,
157 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
158 [install the user visible C preprocessor in DIR
159 (relative to PREFIX) as well as PREFIX/bin])],
160 [if test x$withval = xyes; then
161 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
162 elif test x$withval != xno; then
163 cpp_install_dir=$withval
166 # We would like to our source tree to be readonly. However when releases or
167 # pre-releases are generated, the flex/bison generated files as well as the
168 # various formats of manuals need to be included along with the rest of the
169 # sources. Therefore we have --enable-generated-files-in-srcdir to do
172 AC_MSG_CHECKING([whether to place generated files in the source directory])
173 dnl generated-files-in-srcdir is disabled by default
174 AC_ARG_ENABLE(generated-files-in-srcdir,
175 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
176 [put copies of generated files in source dir
177 intended for creating source tarballs for users
178 without texinfo bison or flex])],
179 generated_files_in_srcdir=$enableval,
180 generated_files_in_srcdir=no)
182 AC_MSG_RESULT($generated_files_in_srcdir)
184 if test "$generated_files_in_srcdir" = "yes"; then
191 # -------------------
192 # Find default linker
193 # -------------------
197 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
198 gnu_ld_flag="$with_gnu_ld",
201 # With pre-defined ld
203 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
204 DEFAULT_LINKER="$with_ld")
205 if test x"${DEFAULT_LINKER+set}" = x"set"; then
206 if test ! -x "$DEFAULT_LINKER"; then
207 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
208 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
211 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
212 [Define to enable the use of a default linker.])
215 AC_MSG_CHECKING([whether a default linker was specified])
216 if test x"${DEFAULT_LINKER+set}" = x"set"; then
217 if test x"$gnu_ld_flag" = x"no"; then
218 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
220 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
226 # With demangler in GNU ld
227 AC_ARG_WITH(demangler-in-ld,
228 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
229 demangler_in_ld="$with_demangler_in_ld",
232 # ----------------------
233 # Find default assembler
234 # ----------------------
238 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
239 gas_flag="$with_gnu_as",
243 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
244 DEFAULT_ASSEMBLER="$with_as")
245 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
246 if test ! -x "$DEFAULT_ASSEMBLER"; then
247 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
248 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
251 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
252 [Define to enable the use of a default assembler.])
255 AC_MSG_CHECKING([whether a default assembler was specified])
256 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
257 if test x"$gas_flag" = x"no"; then
258 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
260 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
270 # If a non-executable a.out is present (e.g. created by GNU as above even if
271 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
272 # file, even when creating an executable, so an execution test fails.
273 # Remove possible default executable files to avoid this.
275 # FIXME: This really belongs into AC_PROG_CC and can be removed once
276 # Autoconf includes it.
277 rm -f a.out a.exe b.out
279 # Find the native compiler
282 ACX_PROG_GNAT([-I"$srcdir"/ada])
284 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
285 # optimizations to be activated explicitly by the toplevel.
288 *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" `
289 CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;;
294 # Determine PICFLAG for target gnatlib.
295 GCC_PICFLAG_FOR_TARGET
296 AC_SUBST(PICFLAG_FOR_TARGET)
298 # -------------------------
299 # Check C compiler features
300 # -------------------------
302 AC_USE_SYSTEM_EXTENSIONS
308 # sizeof(char) is 1 by definition.
309 AC_CHECK_SIZEOF(void *)
310 AC_CHECK_SIZEOF(short)
312 AC_CHECK_SIZEOF(long)
313 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
314 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
317 # ---------------------
318 # Warnings and checking
319 # ---------------------
321 # Check $CC warning features (if it's GCC).
322 # We want to use -pedantic, but we don't want warnings about
326 # * C++11 narrowing conversions in { }
327 # So, we only use -pedantic if we can disable those warnings.
329 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
330 AC_ARG_ENABLE(build-format-warnings,
331 AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
332 [],[enable_build_format_warnings=yes])
333 AS_IF([test $enable_build_format_warnings = no],
334 [wf_opt=-Wno-format],[wf_opt=])
335 ACX_PROG_CC_WARNING_OPTS(
336 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
337 ACX_PROG_CC_WARNING_OPTS(
338 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
340 ACX_PROG_CC_WARNING_OPTS(
341 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
342 ACX_PROG_CC_WARNING_OPTS(
343 m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
344 ACX_PROG_CC_WARNING_OPTS(
345 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
346 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
347 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
348 [-Wno-overlength-strings])), [strict_warn])
349 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
351 # The above macros do nothing if the compiler is not GCC. However, the
352 # Makefile has more goo to add other flags, so these variables are used
353 # to enable warnings only for GCC.
356 if test "x$GCC" = "xyes"; then
357 warn_cflags='$(GCC_WARN_CFLAGS)'
358 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
360 AC_SUBST(warn_cflags)
361 AC_SUBST(warn_cxxflags)
363 # Disable exceptions and RTTI if building with g++
364 ACX_PROG_CC_WARNING_OPTS(
365 m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
368 # Enable expensive internal checks
370 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
374 AC_ARG_ENABLE(checking,
375 [AS_HELP_STRING([[--enable-checking[=LIST]]],
376 [enable expensive run-time checks. With LIST,
377 enable only specific categories of checks.
378 Categories are: yes,no,all,none,release.
379 Flags are: assert,df,fold,gc,gcac,gimple,misc,
380 rtlflag,rtl,runtime,tree,valgrind,types])],
381 [ac_checking_flags="${enableval}"],[
382 # Determine the default checks.
383 if test x$is_release = x ; then
384 ac_checking_flags=yes
386 ac_checking_flags=release
388 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
389 for check in release $ac_checking_flags
392 # these set all the flags to specific states
393 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
394 ac_fold_checking= ; ac_gc_checking=1 ;
395 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
396 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
397 ac_tree_checking=1 ; ac_valgrind_checking= ;
398 ac_types_checking=1 ;;
399 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking= ;
401 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
402 ac_rtlflag_checking= ; ac_runtime_checking= ;
403 ac_tree_checking= ; ac_valgrind_checking= ;
404 ac_types_checking= ;;
405 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
406 ac_fold_checking=1 ; ac_gc_checking=1 ;
407 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
408 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
409 ac_tree_checking=1 ; ac_valgrind_checking= ;
410 ac_types_checking=1 ;;
411 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
412 ac_fold_checking= ; ac_gc_checking= ;
413 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
414 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
415 ac_tree_checking= ; ac_valgrind_checking= ;
416 ac_types_checking= ;;
417 # these enable particular checks
418 assert) ac_assert_checking=1 ;;
419 df) ac_df_checking=1 ;;
420 fold) ac_fold_checking=1 ;;
421 gc) ac_gc_checking=1 ;;
422 gcac) ac_gc_always_collect=1 ;;
423 gimple) ac_gimple_checking=1 ;;
424 misc) ac_checking=1 ;;
425 rtl) ac_rtl_checking=1 ;;
426 rtlflag) ac_rtlflag_checking=1 ;;
427 runtime) ac_runtime_checking=1 ;;
428 tree) ac_tree_checking=1 ;;
429 types) ac_types_checking=1 ;;
430 valgrind) ac_valgrind_checking=1 ;;
431 *) AC_MSG_ERROR(unknown check category $check) ;;
437 if test x$ac_checking != x ; then
438 AC_DEFINE(ENABLE_CHECKING, 1,
439 [Define if you want more run-time sanity checks. This one gets a grab
440 bag of miscellaneous but relatively cheap checks.])
441 nocommon_flag=-fno-common
443 AC_SUBST(nocommon_flag)
444 if test x$ac_df_checking != x ; then
445 AC_DEFINE(ENABLE_DF_CHECKING, 1,
446 [Define if you want more run-time sanity checks for dataflow.])
448 if test x$ac_assert_checking != x ; then
449 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
450 [Define if you want assertions enabled. This is a cheap check.])
452 if test x$ac_gimple_checking != x ; then
453 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
454 [Define if you want operations on GIMPLE (the basic data structure of
455 the high-level optimizers) to be checked for dynamic type safety at
456 runtime. This is moderately expensive.])
458 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
459 if test x$ac_runtime_checking != x ; then
460 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
461 [Define if you want runtime assertions enabled. This is a cheap check.])
463 if test x$ac_tree_checking != x ; then
464 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
465 [Define if you want all operations on trees (the basic data
466 structure of the front ends) to be checked for dynamic type safety
467 at runtime. This is moderately expensive. The tree browser debugging
468 routines will also be enabled by this option.
470 TREEBROWSER=tree-browser.o
473 if test x$ac_types_checking != x ; then
474 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
475 [Define if you want all gimple types to be verified after gimplifiation.
479 AC_SUBST(TREEBROWSER)
480 AC_SUBST(TREECHECKING)
481 if test x$ac_rtl_checking != x ; then
482 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
483 [Define if you want all operations on RTL (the basic data structure
484 of the optimizer and back end) to be checked for dynamic type safety
485 at runtime. This is quite expensive.])
487 if test x$ac_rtlflag_checking != x ; then
488 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
489 [Define if you want RTL flag accesses to be checked against the RTL
490 codes that are supported for each access macro. This is relatively
493 if test x$ac_gc_checking != x ; then
494 AC_DEFINE(ENABLE_GC_CHECKING, 1,
495 [Define if you want the garbage collector to do object poisoning and
496 other memory allocation checks. This is quite expensive.])
498 if test x$ac_gc_always_collect != x ; then
499 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
500 [Define if you want the garbage collector to operate in maximally
501 paranoid mode, validating the entire heap and collecting garbage at
502 every opportunity. This is extremely expensive.])
504 if test x$ac_fold_checking != x ; then
505 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
506 [Define if you want fold checked that it never destructs its argument.
507 This is quite expensive.])
509 valgrind_path_defines=
512 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
513 dnl # an if statement. This was the source of very frustrating bugs
514 dnl # in converting to autoconf 2.5x!
515 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
517 # It is certainly possible that there's valgrind but no valgrind.h.
518 # GCC relies on making annotations so we must have both.
519 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
520 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
521 [[#include <valgrind/memcheck.h>
522 #ifndef VALGRIND_DISCARD
523 #error VALGRIND_DISCARD not defined
525 [gcc_cv_header_valgrind_memcheck_h=yes],
526 [gcc_cv_header_valgrind_memcheck_h=no])
527 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
528 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
529 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
530 [[#include <memcheck.h>
531 #ifndef VALGRIND_DISCARD
532 #error VALGRIND_DISCARD not defined
534 [gcc_cv_header_memcheck_h=yes],
535 [gcc_cv_header_memcheck_h=no])
536 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
537 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
538 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
539 [Define if valgrind's valgrind/memcheck.h header is installed.])
541 if test $gcc_cv_header_memcheck_h = yes; then
542 AC_DEFINE(HAVE_MEMCHECK_H, 1,
543 [Define if valgrind's memcheck.h header is installed.])
546 if test x$ac_valgrind_checking != x ; then
547 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
548 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
549 if test "x$valgrind_path" = "x" \
550 || (test $have_valgrind_h = no \
551 && test $gcc_cv_header_memcheck_h = no \
552 && test $gcc_cv_header_valgrind_memcheck_h = no); then
553 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
555 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
556 valgrind_command="$valgrind_path -q"
557 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
558 [Define if you want to run subprograms and generated programs
559 through valgrind (a memory checker). This is extremely expensive.])
561 AC_SUBST(valgrind_path_defines)
562 AC_SUBST(valgrind_command)
564 # Enable code coverage collection
565 AC_ARG_ENABLE(coverage,
566 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
567 [enable compiler's code coverage collection.
568 Use to measure compiler performance and locate
569 unused parts of the compiler. With LEVEL, specify
570 optimization. Values are opt, noopt,
572 [case "${enableval}" in
574 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
577 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
580 # a.k.a. --disable-coverage
584 AC_MSG_ERROR(unknown coverage setting $enableval)
588 AC_SUBST(coverage_flags)
590 AC_ARG_ENABLE(gather-detailed-mem-stats,
591 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
592 [enable detailed memory allocation stats gathering])], [],
593 [enable_gather_detailed_mem_stats=no])
594 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
595 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
596 [Define to enable detailed memory allocation stats gathering.])
598 AC_ARG_ENABLE(valgrind-annotations,
599 [AS_HELP_STRING([--enable-valgrind-annotations],
600 [enable valgrind runtime interaction])], [],
601 [enable_valgrind_annotations=no])
602 if test x$enable_valgrind_annotations != xno \
603 || test x$ac_valgrind_checking != x; then
604 if (test $have_valgrind_h = no \
605 && test $gcc_cv_header_memcheck_h = no \
606 && test $gcc_cv_header_valgrind_memcheck_h = no); then
607 AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
609 AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
610 [Define to get calls to the valgrind runtime enabled.])
613 # -------------------------------
614 # Miscenalleous configure options
615 # -------------------------------
619 [AS_HELP_STRING([--with-stabs],
620 [arrange to use stabs instead of host debug format])],
624 # Determine whether or not multilibs are enabled.
625 AC_ARG_ENABLE(multilib,
626 [AS_HELP_STRING([--enable-multilib],
627 [enable library support for multiple ABIs])],
628 [], [enable_multilib=yes])
629 AC_SUBST(enable_multilib)
631 # Determine whether or not multiarch is enabled.
632 AC_ARG_ENABLE(multiarch,
633 [AS_HELP_STRING([--enable-multiarch],
634 [enable support for multiarch paths])],
635 [case "${enableval}" in
636 yes|no|auto) enable_multiarch=$enableval;;
637 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
638 esac], [enable_multiarch=auto])
639 if test x${enable_multiarch} = xauto; then
640 if test x${with_native_system_header_dir} != x; then
641 ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
644 if test x$host != x$target && test "x$with_sysroot" = x; then
645 ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
649 AC_MSG_CHECKING(for multiarch configuration)
650 AC_SUBST(enable_multiarch)
651 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
653 # needed for setting the multiarch name for soft-float/hard-float ABIs
657 # Enable __cxa_atexit for C++.
658 AC_ARG_ENABLE(__cxa_atexit,
659 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
662 # Enable C extension for decimal float if target supports it.
663 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
665 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
666 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
667 [Define to 1 to enable decimal float extension to C.])
669 # Use default_decimal_float for dependency.
670 enable_decimal_float=$default_decimal_float
672 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
673 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
674 [Define to 1 to specify that we are using the BID decimal floating
675 point format instead of DPD])
677 # Enable C extension for fixed-point arithmetic.
678 AC_ARG_ENABLE(fixed-point,
679 [AS_HELP_STRING([--enable-fixed-point],
680 [enable fixed-point arithmetic extension to C])],
685 enable_fixed_point=yes
689 enable_fixed_point=yes
692 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
693 enable_fixed_point=no
697 AC_SUBST(enable_fixed_point)
699 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
700 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
701 [Define to 1 to enable fixed-point arithmetic extension to C.])
704 # Pass with no value to take the default
705 # Pass with a value to specify a thread package
706 AC_ARG_ENABLE(threads,
707 [AS_HELP_STRING([[--enable-threads[=LIB]]],
708 [enable thread usage for target GCC,
709 using LIB thread package])],,
713 [AS_HELP_STRING([--enable-tls],
714 [enable or disable generation of tls code
715 overriding the assembler check for tls support])],
719 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
720 Valid choices are 'yes' and 'no'.]) ;;
724 AC_ARG_ENABLE(objc-gc,
725 [AS_HELP_STRING([--enable-objc-gc],
726 [enable the use of Boehm's garbage collector with
727 the GNU Objective-C runtime])],
728 if test x$enable_objc_gc = xno; then
736 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
737 dwarf2="$with_dwarf2",
740 AC_ARG_ENABLE(shared,
741 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
743 case $enable_shared in
747 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
748 for pkg in $enableval; do
749 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
756 ], [enable_shared=yes])
757 AC_SUBST(enable_shared)
759 AC_ARG_WITH([native-system-header-dir],
760 [ --with-native-system-header-dir=dir
761 use dir as the directory to look for standard
762 system header files in. Defaults to /usr/include.],
764 case ${with_native_system_header_dir} in
765 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
766 /* | [[A-Za-z]]:[[\\/]]*) ;;
767 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
769 configured_native_system_header_dir="${withval}"
770 ], [configured_native_system_header_dir=])
772 AC_ARG_WITH(build-sysroot,
773 [AS_HELP_STRING([--with-build-sysroot=sysroot],
774 [use sysroot as the system root during the build])],
775 [if test x"$withval" != x ; then
776 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
778 [SYSROOT_CFLAGS_FOR_TARGET=])
779 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
781 if test "x$prefix" = xNONE; then
782 test_prefix=/usr/local
786 if test "x$exec_prefix" = xNONE; then
787 test_exec_prefix=$test_prefix
789 test_exec_prefix=$exec_prefix
793 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
794 [search for usr/lib, usr/include, et al, within DIR])],
796 case ${with_sysroot} in
797 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
798 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
801 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
802 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
804 case ${TARGET_SYSTEM_ROOT} in
805 "${test_prefix}"|"${test_prefix}/"*|\
806 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
807 '${prefix}'|'${prefix}/'*|\
808 '${exec_prefix}'|'${exec_prefix}/'*)
809 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
810 TARGET_SYSTEM_ROOT_DEFINE="$t"
815 TARGET_SYSTEM_ROOT_DEFINE=
816 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
818 AC_SUBST(TARGET_SYSTEM_ROOT)
819 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
820 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
823 [AS_HELP_STRING([--with-specs=SPECS],
824 [add SPECS to driver command-line processing])],
825 [CONFIGURE_SPECS=$withval],
828 AC_SUBST(CONFIGURE_SPECS)
830 ACX_PKGVERSION([GCC])
831 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
833 # Sanity check enable_languages in case someone does not run the toplevel
834 # configure # script.
835 AC_ARG_ENABLE(languages,
836 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
837 [case ,${enable_languages}, in
839 # go safe -- we cannot be much sure without the toplevel
841 # analysis of which target libs are present and usable
845 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
850 enable_languages=c,${enable_languages}
853 [enable_languages=c])
855 AC_ARG_WITH(multilib-list,
856 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
858 with_multilib_list=default)
860 # -------------------------
861 # Checks for other programs
862 # -------------------------
866 # Find some useful tools
868 # We need awk to create options.c and options.h.
869 # Bail out if it's missing.
871 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
878 AC_SUBST(ranlib_flags)
882 # See if cmp has --ignore-initial.
883 gcc_AC_PROG_CMP_IGNORE_INITIAL
885 # See if we have the mktemp command.
886 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
888 # See if makeinfo has been installed and is modern enough
889 # that we can use it.
890 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
891 [GNU texinfo.* \([0-9][0-9.]*\)],
892 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
893 if test $gcc_cv_prog_makeinfo_modern = no; then
895 *** Makeinfo is missing or too old.
896 *** Info documentation will not be built.])
903 # Is pod2man recent enough to regenerate manpages?
904 AC_MSG_CHECKING([for recent Pod::Man])
905 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
907 GENERATED_MANPAGES=generated-manpages
912 AC_SUBST(GENERATED_MANPAGES)
914 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
917 dnl Don't use AC_PROG_LEX; we insist on flex.
918 dnl LEXLIB is not useful in gcc.
919 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
922 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
924 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
925 # check for build == host before using them.
928 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
929 && test -d ../binutils ; then
930 NM='${objdir}/../binutils/nm-new'
932 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
936 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
937 && test -d ../binutils ; then
938 AR='${objdir}/../binutils/ar'
940 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
944 # --------------------
945 # Checks for C headers
946 # --------------------
948 # Need to reject headers which give warnings, so that the -Werror bootstrap
949 # works later. *sigh* This needs to come before all header checks.
957 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
958 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
959 sys/resource.h sys/param.h sys/times.h sys/stat.h \
960 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
962 # Check for thread headers.
963 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
964 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
966 # These tests can't be done till we know if we have limits.h.
970 # ----------------------
971 # Checks for C++ headers
972 # ----------------------
974 dnl Autoconf will give an error in the configure script if there is no
975 dnl C++ preprocessor. Hack to prevent that.
976 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
978 m4_popdef([AC_MSG_ERROR])[]dnl
982 AC_CHECK_HEADERS(unordered_map)
983 AC_CHECK_HEADERS(tr1/unordered_map)
984 AC_CHECK_HEADERS(ext/hash_map)
989 # Dependency checking.
994 AC_CONFIG_COMMANDS([gccdepdir],[
995 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
996 for lang in $subdirs c-family common
998 ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
999 done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1001 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1009 # These libraries may be used by collect2.
1010 # We may need a special search path to get them linked.
1011 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1013 for libs in '' -lld -lmld \
1014 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1015 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1018 AC_TRY_LINK_FUNC(ldopen,
1019 [gcc_cv_collect2_libs="$libs"; break])
1022 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1023 case $gcc_cv_collect2_libs in
1025 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1027 AC_SUBST(COLLECT2_LIBS)
1029 # When building Ada code on Alpha, we need exc_resume which is usually in
1030 # -lexc. So test for it.
1033 AC_SEARCH_LIBS(exc_resume, exc)
1036 AC_SUBST(GNAT_LIBEXC)
1038 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1041 AC_SEARCH_LIBS(kstat_open, kstat)
1042 EXTRA_GCC_LIBS="$LIBS"
1044 AC_SUBST(EXTRA_GCC_LIBS)
1046 # Some systems put ldexp and frexp in libm instead of libc; assume
1047 # they're both in the same place. jcf-dump needs them.
1050 AC_SEARCH_LIBS(ldexp, m)
1055 # Use <inttypes.h> only if it exists,
1056 # doesn't clash with <sys/types.h>, and declares intmax_t.
1057 AC_MSG_CHECKING(for inttypes.h)
1058 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1059 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1060 [[#include <sys/types.h>
1061 #include <inttypes.h>]],
1062 [[intmax_t i = -1;]])],
1063 [gcc_cv_header_inttypes_h=yes],
1064 [gcc_cv_header_inttypes_h=no])])
1065 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1066 if test $gcc_cv_header_inttypes_h = yes; then
1067 AC_DEFINE(HAVE_INTTYPES_H, 1,
1068 [Define if you have a working <inttypes.h> header file.])
1071 dnl Disabled until we have a complete test for buggy enum bitfields.
1072 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1074 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1075 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1076 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1077 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1078 putchar_unlocked putc_unlocked)
1079 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1080 sysconf strsignal getrusage nl_langinfo \
1081 gettimeofday mbstowcs wcswidth mmap setlocale \
1082 gcc_UNLOCKED_FUNCS madvise)
1084 if test x$ac_cv_func_mbstowcs = xyes; then
1085 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1086 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1092 [gcc_cv_func_mbstowcs_works=yes],
1093 [gcc_cv_func_mbstowcs_works=no],
1094 [gcc_cv_func_mbstowcs_works=yes])])
1095 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1096 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1097 [Define this macro if mbstowcs does not crash when its
1098 first argument is NULL.])
1102 AC_CHECK_TYPE(ssize_t, int)
1103 AC_CHECK_TYPE(caddr_t, char *)
1105 GCC_AC_FUNC_MMAP_BLACKLIST
1109 # Under VMS, vfork works very differently than on Unix. The standard test
1110 # won't work, and it isn't easily adaptable. It makes more sense to
1112 ac_cv_func_vfork_works=yes
1117 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1118 # iconv() prototype.
1123 # Until we have in-tree GNU iconv:
1125 AC_SUBST(LIBICONV_DEP)
1131 # We will need to find libiberty.h and ansidecl.h
1132 saved_CFLAGS="$CFLAGS"
1133 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1134 saved_CXXFLAGS="$CXXFLAGS"
1135 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1136 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1137 strsignal strstr stpcpy strverscmp \
1138 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1139 free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1140 #include "ansidecl.h"
1141 #include "system.h"])
1143 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1144 #include "ansidecl.h"
1146 #ifdef HAVE_SYS_RESOURCE_H
1147 #include <sys/resource.h>
1151 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1152 #include "ansidecl.h"
1154 #ifdef HAVE_SYS_RESOURCE_H
1155 #include <sys/resource.h>
1157 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1158 [Define to `long' if <sys/resource.h> doesn't define.])])
1160 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1161 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1162 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1163 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1164 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1165 #include "ansidecl.h"
1174 gcc_AC_CHECK_DECLS(times, , ,[
1175 #include "ansidecl.h"
1177 #ifdef HAVE_SYS_TIMES_H
1178 #include <sys/times.h>
1182 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1183 #include "ansidecl.h"
1188 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1191 gcc_AC_CHECK_DECLS(madvise, , ,[
1192 #include "ansidecl.h"
1197 # More time-related stuff.
1198 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1199 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1200 #include "ansidecl.h"
1202 #ifdef HAVE_SYS_TIMES_H
1203 #include <sys/times.h>
1205 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1206 if test $ac_cv_struct_tms = yes; then
1207 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1208 [Define if <sys/times.h> defines struct tms.])
1211 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1212 # revisit after autoconf 2.50.
1213 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1214 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1215 #include "ansidecl.h"
1217 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1218 if test $gcc_cv_type_clock_t = yes; then
1219 AC_DEFINE(HAVE_CLOCK_T, 1,
1220 [Define if <time.h> defines clock_t.])
1223 # Check if F_SETLKW is supported by fcntl.
1224 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1225 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1226 #include <fcntl.h>]], [[
1232 return fcntl (1, F_SETLKW, &fl);]])],
1233 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1234 if test $ac_cv_f_setlkw = yes; then
1235 AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1236 [Define if F_SETLKW supported by fcntl.])
1239 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1240 CFLAGS="$saved_CFLAGS"
1241 CXXFLAGS="$saved_CXXFLAGS"
1243 # mkdir takes a single argument on some systems.
1244 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1252 # With Setjmp/Longjmp based exception handling.
1253 AC_ARG_ENABLE(sjlj-exceptions,
1254 [AS_HELP_STRING([--enable-sjlj-exceptions],
1255 [arrange to use setjmp/longjmp exception handling])],
1258 if test $enableval != yes; then
1259 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1264 force_sjlj_exceptions=yes],
1267 force_sjlj_exceptions=yes
1271 force_sjlj_exceptions=yes
1275 force_sjlj_exceptions=no
1278 if test $force_sjlj_exceptions = yes; then
1279 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1280 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1281 [Define 0/1 to force the choice for exception handling model.])
1284 # --------------------------------------------------------
1285 # Build, host, and target specific configuration fragments
1286 # --------------------------------------------------------
1288 # Collect build-machine-specific information.
1289 . ${srcdir}/config.build
1291 # Collect host-machine-specific information.
1292 . ${srcdir}/config.host
1296 # Collect target-machine-specific information.
1297 . ${srcdir}/config.gcc
1299 extra_objs="${host_extra_objs} ${extra_objs}"
1300 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1302 # Default the target-machine variables that were not explicitly set.
1303 if test x"$tm_file" = x
1304 then tm_file=$cpu_type/$cpu_type.h; fi
1306 if test x"$extra_headers" = x
1307 then extra_headers=; fi
1309 if test x$md_file = x
1310 then md_file=$cpu_type/$cpu_type.md; fi
1312 if test x$out_file = x
1313 then out_file=$cpu_type/$cpu_type.c; fi
1315 if test x"$tmake_file" = x
1316 then tmake_file=$cpu_type/t-$cpu_type
1319 # Support --enable-initfini-array.
1320 if test x$enable_initfini_array != xno; then
1321 tm_file="${tm_file} initfini-array.h"
1324 if test x"$dwarf2" = xyes
1325 then tm_file="$tm_file tm-dwarf2.h"
1328 # Say what files are being used for the output code and MD file.
1329 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1330 echo "Using \`$srcdir/config/$md_file' as machine description file."
1332 # If any of the xm_file variables contain nonexistent files, warn
1333 # about them and drop them.
1336 for x in $build_xm_file; do
1337 if test -f $srcdir/config/$x
1339 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1345 for x in $host_xm_file; do
1346 if test -f $srcdir/config/$x
1348 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1354 for x in $xm_file; do
1355 if test -f $srcdir/config/$x
1357 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1363 for f in $tm_file; do
1366 if test $count = ax; then
1367 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1369 echo "Using the following target machine macro files:"
1370 for f in $tm_file; do
1371 echo " $srcdir/config/$f"
1375 if test x$need_64bit_hwint = xyes; then
1376 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1377 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1380 if test x$use_long_long_for_widest_fast_int = xyes; then
1381 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1382 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1383 efficiently supported by the host hardware.])
1386 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1387 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1389 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1390 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1393 for f in $host_xm_file; do
1396 if test $count = a; then
1398 elif test $count = ax; then
1399 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1401 echo "Using the following host machine macro files:"
1402 for f in $host_xm_file; do
1403 echo " $srcdir/config/$f"
1406 echo "Using ${out_host_hook_obj} for host machine hooks."
1408 if test "$host_xm_file" != "$build_xm_file"; then
1410 for f in $build_xm_file; do
1413 if test $count = a; then
1415 elif test $count = ax; then
1416 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1418 echo "Using the following build machine macro files:"
1419 for f in $build_xm_file; do
1420 echo " $srcdir/config/$f"
1425 if test -n "$configured_native_system_header_dir"; then
1426 native_system_header_dir=$configured_native_system_header_dir
1428 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1429 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1433 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1434 gcc_cv_mcontext_underscores,
1436 #include <sys/cdefs.h>
1437 #include <sys/signal.h>
1438 #include <ucontext.h>
1439 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1441 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1442 if test $gcc_cv_mcontext_underscores = yes; then
1443 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1444 [mcontext_t fields start with __])
1453 # Check if a valid thread package
1454 case ${enable_threads} in
1457 target_thread_file='single'
1461 target_thread_file='single'
1463 aix | dce | lynx | mipssde | posix | rtems | \
1464 single | tpf | vxworks | win32)
1465 target_thread_file=${enable_threads}
1468 echo "${enable_threads} is an unknown thread package" 1>&2
1473 if test x${thread_file} = x; then
1474 # No thread file set by target-specific clauses in config.gcc,
1475 # so use file chosen by default logic above
1476 thread_file=${target_thread_file}
1484 if test x$enable___cxa_atexit = xyes || \
1485 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1486 if test x$host = x$target; then
1488 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1489 # keyed to flag_use_cxa_atexit
1497 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1498 [echo "__cxa_atexit can't be enabled on this target"])
1502 # We can't check for __cxa_atexit when building a cross, so assume
1506 if test x$use_cxa_atexit = xyes; then
1507 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1508 [Define if you want to use __cxa_atexit, rather than atexit, to
1509 register C++ destructors for local statics and global objects.
1510 This is essential for fully standards-compliant handling of
1511 destructors, but requires __cxa_atexit in libc.])
1515 # Look for a file containing extra machine modes.
1516 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1517 extra_modes_file='$(srcdir)'/config/${extra_modes}
1518 AC_SUBST(extra_modes_file)
1519 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1520 [Define to the name of a file containing a list of extra machine modes
1521 for this architecture.])
1524 # Convert extra_options into a form suitable for Makefile use.
1527 for f in $extra_options; do
1528 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1529 all_opt_files="$all_opt_files $srcdir/config/$f"
1531 AC_SUBST(extra_opt_files)
1533 # auto-host.h is the file containing items generated by autoconf and is
1534 # the first file included by config.h.
1535 # If host=build, it is correct to have bconfig include auto-host.h
1536 # as well. If host!=build, we are in error and need to do more
1537 # work to find out the build config parameters.
1538 if test x$host = x$build
1540 build_auto=auto-host.h
1542 # We create a subdir, then run autoconf in the subdir.
1543 # To prevent recursion we set host and build for the new
1544 # invocation of configure to the build for this invocation
1551 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1552 *) realsrcdir=../${srcdir};;
1554 # Clearing GMPINC is necessary to prevent host headers being
1555 # used by the build compiler. Defining GENERATOR_FILE stops
1556 # system.h from including gmp.h.
1557 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1558 CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1559 LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1560 GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1561 ${realsrcdir}/configure \
1562 --enable-languages=${enable_languages-all} \
1563 --target=$target_alias --host=$build_alias --build=$build_alias
1565 # We just finished tests for the build machine, so rename
1566 # the file auto-build.h in the gcc directory.
1567 mv auto-host.h ../auto-build.h
1570 build_auto=auto-build.h
1572 AC_SUBST(build_subdir)
1574 tm_file="${tm_file} defaults.h"
1575 tm_p_file="${tm_p_file} tm-preds.h"
1576 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1577 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1578 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1579 # put this back in temporarily.
1580 xm_file="auto-host.h ansidecl.h ${xm_file}"
1587 # Compile in configure arguments.
1588 if test -f configargs.h ; then
1589 # Being re-configured.
1590 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1591 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1593 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1596 # Double all backslashes and backslash all quotes to turn
1597 # gcc_config_arguments into a C string.
1598 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1599 $gcc_config_arguments
1601 gcc_config_arguments_str=`cat conftest.out`
1604 cat > configargs.h <<EOF
1605 /* Generated automatically. */
1606 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1607 static const char thread_model[] = "$thread_file";
1609 static const struct {
1610 const char *name, *value;
1611 } configure_default_options[] = $configure_default_options;
1616 gcc_BASEVER=`cat $srcdir/BASE-VER`
1617 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1618 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1619 if test -f $srcdir/REVISION ; then
1620 gcc_REVISION=`cat $srcdir/REVISION`
1624 cat > plugin-version.h <<EOF
1625 #include "configargs.h"
1627 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1628 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1629 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1630 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1632 static char basever[] = "$gcc_BASEVER";
1633 static char datestamp[] = "$gcc_DATESTAMP";
1634 static char devphase[] = "$gcc_DEVPHASE";
1635 static char revision[] = "$gcc_REVISION";
1637 /* FIXME plugins: We should make the version information more precise.
1638 One way to do is to add a checksum. */
1640 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1642 configuration_arguments};
1646 # Internationalization
1647 ZW_GNU_GETTEXT_SISTER_DIR
1649 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1650 # -liconv on the link line twice.
1651 case "$LIBINTL" in *$LIBICONV*)
1655 AC_ARG_ENABLE(secureplt,
1656 [AS_HELP_STRING([--enable-secureplt],
1657 [enable -msecure-plt by default for PowerPC])],
1660 AC_ARG_ENABLE(leading-mingw64-underscores,
1661 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1662 [enable leading underscores on 64 bit mingw targets]),
1664 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1665 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1666 [Define if we should use leading underscore on 64 bit mingw targets])])
1669 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1672 AC_ARG_ENABLE(frame-pointer,
1673 [AS_HELP_STRING([--enable-frame-pointer],
1674 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1677 linux* | darwin[[8912]]*)
1678 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1680 enable_frame_pointer=no
1683 enable_frame_pointer=yes
1688 # Windows32 Registry support for specifying GCC installation paths.
1689 AC_ARG_ENABLE(win32-registry,
1690 [AS_HELP_STRING([--disable-win32-registry],
1691 [disable lookup of installation paths in the
1692 Registry on Windows hosts])
1693 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1694 AS_HELP_STRING([--enable-win32-registry=KEY],
1695 [use KEY instead of GCC version as the last portion
1696 of the registry key])],,)
1699 win32 | pe | cygwin* | mingw32* | uwin*)
1700 if test "x$enable_win32_registry" != xno; then
1701 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1704 if test "x$enable_win32_registry" != xno; then
1705 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1706 [Define to 1 if installation paths should be looked up in the Windows
1707 Registry. Ignored on non-Windows hosts.])
1709 if test "x$enable_win32_registry" != xyes \
1710 && test "x$enable_win32_registry" != x; then
1711 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1712 [Define to be the last component of the Windows registry key under which
1713 to look for installation paths. The full key used will be
1714 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1715 The default is the GCC version number.])
1721 # Get an absolute path to the GCC top-level source directory
1722 holddir=`${PWDCMD-pwd}`
1724 topdir=`${PWDCMD-pwd}`
1727 # Conditionalize the makefile for this host machine.
1729 for f in ${host_xmake_file}
1731 if test -f ${srcdir}/config/$f
1733 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1737 # Conditionalize the makefile for this target machine.
1739 for f in ${tmake_file}
1741 if test -f ${srcdir}/config/$f
1743 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1746 tmake_file="${tmake_file_}"
1748 out_object_file=`basename $out_file .c`.o
1749 common_out_object_file=`basename $common_out_file .c`.o
1751 tm_file_list="options.h"
1752 tm_include_list="options.h insn-constants.h"
1753 for f in $tm_file; do
1756 f=`echo $f | sed 's/^..//'`
1757 tm_file_list="${tm_file_list} $f"
1758 tm_include_list="${tm_include_list} $f"
1761 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1762 tm_include_list="${tm_include_list} $f"
1765 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1766 tm_include_list="${tm_include_list} config/$f"
1773 for f in $tm_p_file; do
1776 tm_p_file_list="${tm_p_file_list} $f"
1777 tm_p_include_list="${tm_p_include_list} $f"
1780 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1781 tm_p_include_list="${tm_p_include_list} config/$f"
1787 for f in $xm_file; do
1790 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1791 xm_include_list="${xm_include_list} $f"
1794 xm_file_list="${xm_file_list} $f"
1795 xm_include_list="${xm_include_list} $f"
1798 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1799 xm_include_list="${xm_include_list} config/$f"
1805 host_xm_include_list=
1806 for f in $host_xm_file; do
1809 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1810 host_xm_include_list="${host_xm_include_list} $f"
1813 host_xm_file_list="${host_xm_file_list} $f"
1814 host_xm_include_list="${host_xm_include_list} $f"
1817 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1818 host_xm_include_list="${host_xm_include_list} config/$f"
1824 for f in $build_xm_file; do
1827 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1828 build_xm_include_list="${build_xm_include_list} $f"
1830 auto-build.h | auto-host.h )
1831 build_xm_file_list="${build_xm_file_list} $f"
1832 build_xm_include_list="${build_xm_include_list} $f"
1835 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1836 build_xm_include_list="${build_xm_include_list} config/$f"
1841 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1842 # cross-compiler which does not use the native headers and libraries.
1843 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1844 CROSS= AC_SUBST(CROSS)
1845 ALL=all.internal AC_SUBST(ALL)
1846 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1848 if test "x$with_build_sysroot" != x; then
1849 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1851 # This value is used, even on a native system, because
1852 # CROSS_SYSTEM_HEADER_DIR is just
1853 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1854 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1857 if test x$host != x$target
1859 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1861 SYSTEM_HEADER_DIR=$build_system_header_dir
1862 case "$host","$target" in
1863 # Darwin crosses can use the host system's libraries and headers,
1864 # because of the fat library support. Of course, it must be the
1865 # same version of Darwin on both sides. Allow the user to
1866 # just say --target=foo-darwin without a version number to mean
1867 # "the version on this system".
1868 *-*-darwin*,*-*-darwin*)
1869 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1870 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1871 if test $hostos = $targetos -o $targetos = darwin ; then
1873 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1878 i?86-*-*,x86_64-*-* \
1879 | powerpc*-*-*,powerpc64*-*-*)
1880 CROSS="$CROSS -DNATIVE_CROSS" ;;
1885 if test "x$with_headers" = x; then
1892 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1893 SYSTEM_HEADER_DIR=$build_system_header_dir
1896 # If this is a cross-compiler that does not
1897 # have its own set of headers then define
1900 # If this is using newlib, without having the headers available now,
1901 # then define inhibit_libc in LIBGCC2_CFLAGS.
1902 # This prevents libgcc2 from containing any code which requires libc
1904 : ${inhibit_libc=false}
1905 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1906 test x$with_newlib = xyes ; } &&
1907 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1910 AC_SUBST(inhibit_libc)
1912 # When building gcc with a cross-compiler, we need to adjust things so
1913 # that the generator programs are still built with the native compiler.
1914 # Also, we cannot run fixincludes.
1916 # These are the normal (build=host) settings:
1917 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1918 CXX_FOR_BUILD='$(CXX)' AC_SUBST(CXX_FOR_BUILD)
1919 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1920 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
1921 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1922 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1924 # And these apply if build != host, or we are generating coverage data
1925 if test x$build != x$host || test "x$coverage_flags" != x
1927 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1928 BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
1929 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1932 # Expand extra_headers to include complete path.
1933 # This substitutes for lots of t-* files.
1935 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1936 for file in ${extra_headers} ; do
1937 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1940 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1941 if test x"$use_gcc_tgmath" = xyes
1942 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1945 # Define collect2 in Makefile.
1946 case $host_can_use_collect2 in
1948 *) collect2='collect2$(exeext)' ;;
1950 AC_SUBST([collect2])
1952 # Add a definition of USE_COLLECT2 if system wants one.
1953 case $use_collect2 in
1954 no) use_collect2= ;;
1957 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1958 xm_defines="${xm_defines} USE_COLLECT2"
1959 case $host_can_use_collect2 in
1961 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1967 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1968 [Define to the name of the LTO plugin DSO that must be
1969 passed to the linker's -plugin=LIB option.])
1971 # ---------------------------
1972 # Assembler & linker features
1973 # ---------------------------
1975 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1976 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1977 # However when ld-new is first executed from the build tree, libtool will
1978 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1979 # to the build tree. While doing this we need to use the previous-stage
1980 # linker, or we have an infinite loop. The presence of a shell script as
1981 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1982 # the gcc/collect-ld script. So we need to know how libtool works, or
1983 # exec-tool will fail.
1985 m4_defun([_LT_CONFIG_COMMANDS], [])
1988 AC_SUBST(enable_fast_install)
1990 # Identify the assembler which will work hand-in-glove with the newly
1991 # built GCC, so that we can examine its features. This is the assembler
1992 # which will be driven by the driver program.
1994 # If build != host, and we aren't building gas in-tree, we identify a
1995 # build->target assembler and hope that it will have the same features
1996 # as the host->target assembler we'll be using.
1997 gcc_cv_gas_major_version=
1998 gcc_cv_gas_minor_version=
1999 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2001 m4_pattern_allow([AS_FOR_TARGET])dnl
2002 AS_VAR_SET_IF(gcc_cv_as,, [
2003 if test -x "$DEFAULT_ASSEMBLER"; then
2004 gcc_cv_as="$DEFAULT_ASSEMBLER"
2005 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
2006 && test -f ../gas/Makefile \
2007 && test x$build = x$host; then
2008 gcc_cv_as=../gas/as-new$build_exeext
2009 elif test -x as$build_exeext; then
2010 # Build using assembler in the current directory.
2011 gcc_cv_as=./as$build_exeext
2012 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2013 gcc_cv_as="$AS_FOR_TARGET"
2015 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2018 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2019 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2020 case "$ORIGINAL_AS_FOR_TARGET" in
2021 ./as | ./as$build_exeext) ;;
2022 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2025 AC_MSG_CHECKING(what assembler to use)
2026 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2027 # Single tree build which includes gas. We want to prefer it
2028 # over whatever linker top-level may have detected, since
2029 # we'll use what we're building after installation anyway.
2030 AC_MSG_RESULT(newly built gas)
2032 _gcc_COMPUTE_GAS_VERSION
2033 in_tree_gas_is_elf=no
2034 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2035 || (grep 'obj_format = multi' ../gas/Makefile \
2036 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2038 in_tree_gas_is_elf=yes
2041 AC_MSG_RESULT($gcc_cv_as)
2047 [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
2048 [case "${enableval}" in
2055 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
2056 [case "${enableval}" in
2058 install_gold_as_default=yes
2061 if test x${default_ld} != x; then
2062 install_gold_as_default=yes
2068 AC_MSG_ERROR([invalid --enable-gold argument])
2071 [install_gold_as_default=no])
2073 # Identify the linker which will work hand-in-glove with the newly
2074 # built GCC, so that we can examine its features. This is the linker
2075 # which will be driven by the driver program.
2077 # If build != host, and we aren't building gas in-tree, we identify a
2078 # build->target linker and hope that it will have the same features
2079 # as the host->target linker we'll be using.
2080 gcc_cv_gld_major_version=
2081 gcc_cv_gld_minor_version=
2082 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2083 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2084 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2086 AS_VAR_SET_IF(gcc_cv_ld,, [
2087 if test -x "$DEFAULT_LINKER"; then
2088 gcc_cv_ld="$DEFAULT_LINKER"
2089 elif test $install_gold_as_default = yes \
2090 && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2091 && test -f ../gold/Makefile \
2092 && test x$build = x$host; then
2093 gcc_cv_ld=../gold/ld-new$build_exeext
2094 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
2095 && test -f ../ld/Makefile \
2096 && test x$build = x$host; then
2097 gcc_cv_ld=../ld/ld-new$build_exeext
2098 elif test -x collect-ld$build_exeext; then
2099 # Build using linker in the current directory.
2100 gcc_cv_ld=./collect-ld$build_exeext
2101 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2102 gcc_cv_ld="$LD_FOR_TARGET"
2104 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2107 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2108 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2109 # if the PLUGIN_LD is set ld-new, just have it as ld
2110 # as that is the installed named.
2111 if test x$PLUGIN_LD_SUFFIX = xld-new \
2112 || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2115 AC_ARG_WITH(plugin-ld,
2116 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2117 [if test x"$withval" != x; then
2118 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2119 PLUGIN_LD_SUFFIX=`echo $withval | sed -e "s,$target_alias-,,"`
2121 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2122 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2124 # Check to see if we are using gold instead of ld
2125 AC_MSG_CHECKING(whether we are using gold)
2127 if test x$gcc_cv_ld != x; then
2128 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2129 | grep "GNU gold" > /dev/null; then
2133 AC_MSG_RESULT($ld_is_gold)
2135 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2136 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2137 case "$ORIGINAL_LD_FOR_TARGET" in
2138 ./collect-ld | ./collect-ld$build_exeext) ;;
2139 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2142 AC_MSG_CHECKING(what linker to use)
2143 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2144 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2145 # Single tree build which includes ld. We want to prefer it
2146 # over whatever linker top-level may have detected, since
2147 # we'll use what we're building after installation anyway.
2148 AC_MSG_RESULT(newly built ld)
2150 in_tree_ld_is_elf=no
2151 if (grep 'EMUL = .*elf' ../ld/Makefile \
2152 || grep 'EMUL = .*linux' ../ld/Makefile \
2153 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2154 in_tree_ld_is_elf=yes
2155 elif test "$ld_is_gold" = yes; then
2156 in_tree_ld_is_elf=yes
2158 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
2161 gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2162 if test x$gcc_cv_gld_version != x; then
2166 case $gcc_cv_gld_version in
2169 *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2172 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2173 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2175 ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2176 ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2178 AC_MSG_RESULT($gcc_cv_ld)
2180 gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2181 ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2182 ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2185 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2186 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2188 # Figure out what nm we will be using.
2189 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2190 AS_VAR_SET_IF(gcc_cv_nm,, [
2191 if test -f $gcc_cv_binutils_srcdir/configure.in \
2192 && test -f ../binutils/Makefile \
2193 && test x$build = x$host; then
2194 gcc_cv_nm=../binutils/nm-new$build_exeext
2195 elif test -x nm$build_exeext; then
2196 gcc_cv_nm=./nm$build_exeext
2197 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2198 gcc_cv_nm="$NM_FOR_TARGET"
2200 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2203 AC_MSG_CHECKING(what nm to use)
2204 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2205 # Single tree build which includes binutils.
2206 AC_MSG_RESULT(newly built nm)
2209 AC_MSG_RESULT($gcc_cv_nm)
2213 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2214 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2215 case "$ORIGINAL_NM_FOR_TARGET" in
2216 ./nm | ./nm$build_exeext) ;;
2217 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2221 # Figure out what objdump we will be using.
2222 AS_VAR_SET_IF(gcc_cv_objdump,, [
2223 if test -f $gcc_cv_binutils_srcdir/configure.in \
2224 && test -f ../binutils/Makefile \
2225 && test x$build = x$host; then
2226 # Single tree build which includes binutils.
2227 gcc_cv_objdump=../binutils/objdump$build_exeext
2228 elif test -x objdump$build_exeext; then
2229 gcc_cv_objdump=./objdump$build_exeext
2230 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2231 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2233 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2236 AC_MSG_CHECKING(what objdump to use)
2237 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2238 # Single tree build which includes binutils.
2239 AC_MSG_RESULT(newly built objdump)
2240 elif test x$gcc_cv_objdump = x; then
2241 AC_MSG_RESULT(not found)
2243 AC_MSG_RESULT($gcc_cv_objdump)
2246 # Figure out what readelf we will be using.
2247 AS_VAR_SET_IF(gcc_cv_readelf,, [
2248 if test -f $gcc_cv_binutils_srcdir/configure.in \
2249 && test -f ../binutils/Makefile \
2250 && test x$build = x$host; then
2251 # Single tree build which includes binutils.
2252 gcc_cv_readelf=../binutils/readelf$build_exeext
2253 elif test -x readelf$build_exeext; then
2254 gcc_cv_readelf=./readelf$build_exeext
2256 AC_PATH_PROG(gcc_cv_readelf, readelf)
2259 AC_MSG_CHECKING(what readelf to use)
2260 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2261 # Single tree build which includes binutils.
2262 AC_MSG_RESULT(newly built readelf)
2263 elif test x$gcc_cv_readelf = x; then
2264 AC_MSG_RESULT(not found)
2266 AC_MSG_RESULT($gcc_cv_readelf)
2269 # Figure out what assembler alignment features are present.
2270 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2274 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2275 [Define if your assembler supports .balign and .p2align.])])
2277 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2280 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2281 [Define if your assembler supports specifying the maximum number
2282 of bytes to skip when using the GAS .p2align command.])])
2284 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2287 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2288 [Define if your assembler supports .literal16.])])
2290 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2292 [conftest_label1: .word 0
2294 conftest_label2: .word 0
2296 [if test x$gcc_cv_nm != x; then
2297 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2298 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2299 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2301 else gcc_cv_as_subsection_m1=yes
2303 rm -f conftest.nm1 conftest.nm2
2305 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2306 [Define if your assembler supports .subsection and .subsection -1 starts
2307 emitting at the beginning of your section.])])
2309 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2312 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2314 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2316 [ .weakref foobar, barfnot],,
2317 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2319 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2322 .NSUBSPA $CODE$,COMDAT],,
2323 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2325 # .hidden needs to be supported in both the assembler and the linker,
2326 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2327 # This is irritatingly difficult to feature test for; we have to check the
2328 # date string after the version number. If we've got an in-tree
2329 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2331 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2332 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2338 # Darwin as has some visibility support, though with a different syntax.
2339 gcc_cv_as_hidden=yes
2343 # gnu_indirect_function type is an extension proposed at
2344 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2345 # selection of function implementation
2346 AC_ARG_ENABLE(gnu-indirect-function,
2347 [AS_HELP_STRING([--enable-gnu-indirect-function],
2348 [enable the use of the @gnu_indirect_function to glibc systems])],
2349 [case $enable_gnu_indirect_function in
2351 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2352 Valid choices are 'yes' and 'no'.]) ;;
2354 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2356 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2357 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2358 [Define if your system supports gnu indirect functions.])
2362 if test $in_tree_ld != yes ; then
2363 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2364 if echo "$ld_ver" | grep GNU > /dev/null; then
2365 if test x"$ld_is_gold" = xyes; then
2366 # GNU gold --version looks like this:
2368 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2370 # We extract the binutils version which is more familiar and specific
2371 # than the gold version.
2372 ld_vers=`echo $ld_ver | sed -n \
2373 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2375 # GNU ld --version looks like this:
2377 # GNU ld (GNU Binutils) 2.21.51.20110225
2378 ld_vers=`echo $ld_ver | sed -n \
2379 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2381 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2382 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2383 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2384 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2388 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2391 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2392 # /usr/ccs/bin/ld has been configured.
2393 ld_ver=`$gcc_cv_ld -V 2>&1`
2394 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2395 ld_vers=`echo $ld_ver | sed -n \
2396 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2397 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2398 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2406 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2407 [[if test $in_tree_ld = yes ; then
2409 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2410 && test $in_tree_ld_is_elf = yes; then
2411 gcc_cv_ld_hidden=yes
2414 gcc_cv_ld_hidden=yes
2415 if test x"$ld_is_gold" = xyes; then
2417 elif echo "$ld_ver" | grep GNU > /dev/null; then
2419 mmix-knuth-mmixware)
2420 # The linker emits by default mmo, not ELF, so "no" is appropriate.
2424 if test 0"$ld_date" -lt 20020404; then
2425 if test -n "$ld_date"; then
2426 # If there was date string, but was earlier than 2002-04-04, fail
2428 elif test -z "$ld_vers"; then
2429 # If there was no date string nor ld version number, something is wrong
2432 test -z "$ld_vers_patch" && ld_vers_patch=0
2433 if test "$ld_vers_major" -lt 2; then
2435 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2436 gcc_cv_ld_hidden="no"
2437 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2445 # Darwin ld has some visibility support.
2446 gcc_cv_ld_hidden=yes
2448 hppa64*-*-hpux* | ia64*-*-hpux*)
2449 gcc_cv_ld_hidden=yes
2451 *-*-solaris2.1[0-9]*)
2452 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2453 # .symbolic was only added in Solaris 9 12/02.
2454 gcc_cv_ld_hidden=yes
2462 libgcc_visibility=no
2463 AC_SUBST(libgcc_visibility)
2464 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2465 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2466 libgcc_visibility=yes
2467 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2468 [Define if your assembler and linker support .hidden.])
2471 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2472 gcc_cv_ld_ro_rw_mix=unknown
2473 if test $in_tree_ld = yes ; then
2474 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2475 && test $in_tree_ld_is_elf = yes; then
2476 gcc_cv_ld_ro_rw_mix=read-write
2478 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2479 echo '.section myfoosect, "a"' > conftest1.s
2480 echo '.section myfoosect, "aw"' > conftest2.s
2481 echo '.byte 1' >> conftest2.s
2482 echo '.section myfoosect, "a"' > conftest3.s
2483 echo '.byte 0' >> conftest3.s
2484 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2485 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2486 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2487 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2488 conftest2.o conftest3.o > /dev/null 2>&1; then
2489 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2490 | sed -e '/myfoosect/!d' -e N`
2491 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2492 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2493 gcc_cv_ld_ro_rw_mix=read-only
2495 gcc_cv_ld_ro_rw_mix=read-write
2500 rm -f conftest.* conftest[123].*
2503 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2504 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2505 [Define if your linker links a mix of read-only
2506 and read-write sections into a read-write section.])
2508 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2510 gcc_AC_INITFINI_ARRAY
2512 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2513 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2521 [[# GAS versions before 2.11 do not support uleb128,
2522 # despite appearing to.
2523 # ??? There exists an elf-specific test that will crash
2524 # the assembler. Perhaps it's better to figure out whether
2525 # arbitrary sections are supported and try the test.
2526 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2527 if echo "$as_ver" | grep GNU > /dev/null; then
2528 as_vers=`echo $as_ver | sed -n \
2529 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2530 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2531 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2532 if test $as_major -eq 2 && test $as_minor -lt 11
2534 else gcc_cv_as_leb128=yes
2537 [AC_DEFINE(HAVE_AS_LEB128, 1,
2538 [Define if your assembler supports .sleb128 and .uleb128.])])
2540 # Check if we have assembler support for unwind directives.
2541 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2548 .cfi_escape 1, 2, 3, 4, 5
2552 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2553 # read-only and read-write sections, we need to make sure that the
2554 # assembler used emits read-write .eh_frame sections.
2555 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2556 if test "x$gcc_cv_objdump" != x; then
2557 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2558 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2559 gcc_cv_as_cfi_directive=no
2562 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2563 # On Solaris/x86, make sure that GCC and assembler agree on using
2564 # read-only .eh_frame sections for 64-bit.
2565 if test x$gas = xyes; then
2566 as_ix86_64_opt="--64"
2568 as_ix86_64_opt="-xarch=amd64"
2570 if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2571 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2572 sed -e /.eh_frame/!d -e N | \
2573 grep READONLY > /dev/null; then
2574 gcc_cv_as_cfi_directive=yes
2576 gcc_cv_as_cfi_directive=no
2580 gcc_cv_as_cfi_directive=yes
2585 # no objdump, err on the side of caution
2586 gcc_cv_as_cfi_directive=no
2589 gcc_cv_as_cfi_directive=yes
2593 gcc_cv_as_cfi_directive=yes
2596 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2597 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2601 .cfi_adjust_cfa_offset 64
2603 .cfi_adjust_cfa_offset 128
2606 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2607 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2608 gcc_cv_as_cfi_advance_working=yes
2612 # no objdump, err on the side of caution
2613 gcc_cv_as_cfi_advance_working=no
2615 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2616 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2617 [`if test $gcc_cv_as_cfi_directive = yes \
2618 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2619 [Define 0/1 if your assembler supports CFI directives.])
2621 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2622 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2623 gcc_cv_as_cfi_personality_directive, ,,
2626 .cfi_personality 0, symbol
2628 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2629 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2630 then echo 1; else echo 0; fi`],
2631 [Define 0/1 if your assembler supports .cfi_personality.])
2633 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2634 gcc_cv_as_cfi_sections_directive, ,,
2636 .cfi_sections .debug_frame, .eh_frame
2640 win32 | pe | cygwin* | mingw32* | uwin*)
2641 # Need to check that we generated the correct relocation for the
2642 # .debug_frame section. This was fixed for binutils 2.21.
2643 gcc_cv_as_cfi_sections_directive=no
2644 if test "x$gcc_cv_objdump" != x; then
2645 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2646 grep secrel > /dev/null; then
2647 gcc_cv_as_cfi_sections_directive=yes
2652 gcc_cv_as_cfi_sections_directive=yes
2655 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2656 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2657 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2658 then echo 1; else echo 0; fi`],
2659 [Define 0/1 if your assembler supports .cfi_sections.])
2661 # GAS versions up to and including 2.11.0 may mis-optimize
2663 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2671 .section .eh_frame,"aw",@progbits
2673 .4byte .LECIE1-.LSCIE1
2687 .4byte .LEFDE1-.LASFDE1
2689 .4byte .LASFDE1-__FRAME_BEGIN__
2697 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2698 cat > conftest.lit <<EOF
2699 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2700 0010 01000000 12000000 18000000 00000000 ................
2701 0020 08000000 04080000 0044 .........D @&t@
2703 cat > conftest.big <<EOF
2704 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2705 0010 00000001 00000012 00000018 00000000 ................
2706 0020 00000008 04000000 0844 .........D @&t@
2708 # If the assembler didn't choke, and we can objdump,
2709 # and we got the correct data, then succeed.
2710 # The text in the here-document typically retains its unix-style line
2711 # endings, while the output of objdump will use host line endings.
2712 # Therefore, use diff -b for the comparisons.
2713 if test x$gcc_cv_objdump != x \
2714 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2715 | tail -3 > conftest.got \
2716 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2717 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2719 gcc_cv_as_eh_frame=yes
2720 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2721 gcc_cv_as_eh_frame=buggy
2723 # Uh oh, what do we do now?
2724 gcc_cv_as_eh_frame=no
2727 if test $gcc_cv_as_eh_frame = buggy; then
2728 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2729 [Define if your assembler mis-optimizes .eh_frame data.])
2732 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2733 [elf,2,12,0], [--fatal-warnings],
2734 [.section .rodata.str, "aMS", @progbits, 1])
2735 if test $gcc_cv_as_shf_merge = no; then
2736 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2737 [elf,2,12,0], [--fatal-warnings],
2738 [.section .rodata.str, "aMS", %progbits, 1])
2740 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2741 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2742 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2744 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2745 gcc_cv_as_comdat_group,
2746 [elf,2,16,0], [--fatal-warnings],
2747 [.section .text,"axG",@progbits,.foo,comdat])
2748 if test $gcc_cv_as_comdat_group = yes; then
2749 gcc_cv_as_comdat_group_percent=no
2750 gcc_cv_as_comdat_group_group=no
2752 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2753 gcc_cv_as_comdat_group_percent,
2754 [elf,2,16,0], [--fatal-warnings],
2755 [.section .text,"axG",%progbits,.foo,comdat])
2756 if test $gcc_cv_as_comdat_group_percent = yes; then
2757 gcc_cv_as_comdat_group_group=no
2759 if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2760 gcc_cv_as_comdat_group_group=no
2763 # Sun as uses a completely different syntax.
2768 .group foo,".text%foo",#comdat
2769 .section ".text%foo", #alloc,#execinstr,#progbits
2774 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2776 .group foo,.text%foo,#comdat
2777 .section .text%foo, "ax", @progbits
2783 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2784 gcc_cv_as_comdat_group_group,
2790 if test x"$ld_is_gold" = xyes; then
2792 elif test $in_tree_ld = yes ; then
2794 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2795 && test $in_tree_ld_is_elf = yes; then
2798 elif echo "$ld_ver" | grep GNU > /dev/null; then
2800 if test 0"$ld_date" -lt 20050308; then
2801 if test -n "$ld_date"; then
2802 # If there was date string, but was earlier than 2005-03-08, fail
2804 elif test "$ld_vers_major" -lt 2; then
2806 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2813 *-*-solaris2.1[1-9]*)
2815 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2816 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2819 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2820 # least ld version 1.2267.
2821 if test "$ld_vers_major" -gt 1; then
2823 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2825 elif test "$ld_vers_minor" -ge 2267; then
2830 # Assume linkers other than GNU ld don't support COMDAT group.
2836 # Allow overriding the automatic COMDAT group tests above.
2837 AC_ARG_ENABLE(comdat,
2838 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2839 [comdat_group="$enable_comdat"])
2840 if test $comdat_group = no; then
2841 gcc_cv_as_comdat_group=no
2842 gcc_cv_as_comdat_group_percent=no
2843 gcc_cv_as_comdat_group_group=no
2845 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2846 [`if test $gcc_cv_as_comdat_group = yes \
2847 || test $gcc_cv_as_comdat_group_percent = yes \
2848 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2849 [Define 0/1 if your assembler and linker support COMDAT groups.])
2851 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2852 gcc_cv_as_discriminator,
2856 .loc 1 1 0 discriminator 1],,
2857 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2858 [Define if your assembler supports the .loc discriminator sub-directive.])])
2860 # Thread-local storage - the check is heavily parameterized.
2869 .section ".tdata","awT",@progbits
2872 ldq $27,__tls_get_addr($29) !literal!1
2873 lda $16,foo($29) !tlsgd!1
2874 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2875 ldq $27,__tls_get_addr($29) !literal!2
2876 lda $16,foo($29) !tlsldm!2
2877 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2878 ldq $1,foo($29) !gotdtprel
2879 ldah $2,foo($29) !dtprelhi
2880 lda $3,foo($2) !dtprello
2881 lda $4,foo($29) !dtprel
2882 ldq $1,foo($29) !gottprel
2883 ldah $2,foo($29) !tprelhi
2884 lda $3,foo($2) !tprello
2885 lda $4,foo($29) !tprel'
2888 tls_as_opt=--fatal-warnings
2890 cris-*-*|crisv32-*-*)
2892 .section ".tdata","awT",@progbits
2899 tls_as_opt=--fatal-warnings
2903 .section ".tdata","awT",@progbits
2915 .section ".tdata","awT",@progbits
2919 addil LT%foo-$tls_gdidx$,gp
2920 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2923 addil LT%foo-$tls_ldidx$,gp
2925 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2926 addil LR%foo-$tls_dtpoff$,%ret0
2927 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2929 addil LT%foo-$tls_ieoff$,gp
2930 ldw RT%foo-$tls_ieoff$(%r1),%t2
2933 addil LR%foo-$tls_leoff$,%t1
2934 ldo RR%foo-$tls_leoff$(%r1),%t2'
2937 tls_as_opt=--fatal-warnings
2941 .section ".tdata","awT",%progbits
2952 i[34567]86-*-* | x86_64-*-*)
2954 i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
2961 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2963 .section .tdata,"awt",@progbits'
2968 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2969 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2973 .section ".tdata","awT",@progbits'
2977 tls_as_opt="--fatal-warnings"
2981 conftest_s="$conftest_s
2985 leal foo@tlsgd(,%ebx,1), %eax
2986 leal foo@tlsldm(%ebx), %eax
2987 leal foo@dtpoff(%eax), %edx
2988 movl foo@gottpoff(%ebx), %eax
2989 subl foo@gottpoff(%ebx), %eax
2990 addl foo@gotntpoff(%ebx), %eax
2991 movl foo@indntpoff, %eax
2992 movl \$foo@tpoff, %eax
2993 subl \$foo@tpoff, %eax
2994 leal foo@ntpoff(%ecx), %eax"
2997 if test x$on_solaris = xyes; then
2999 yes) tls_as_opt="$tls_as_opt --64" ;;
3000 no) tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3003 conftest_s="$conftest_s
3007 leaq foo@tlsgd(%rip), %rdi
3008 leaq foo@tlsld(%rip), %rdi
3009 leaq foo@dtpoff(%rax), %rdx
3010 movq foo@gottpoff(%rip), %rax
3011 movq \$foo@tpoff, %rax"
3017 .section ".tdata","awT",@progbits
3020 addl r16 = @ltoff(@dtpmod(foo#)), gp
3021 addl r17 = @ltoff(@dtprel(foo#)), gp
3022 addl r18 = @ltoff(@tprel(foo#)), gp
3023 addl r19 = @dtprel(foo#), gp
3024 adds r21 = @dtprel(foo#), r13
3025 movl r23 = @dtprel(foo#)
3026 addl r20 = @tprel(foo#), gp
3027 adds r22 = @tprel(foo#), r13
3028 movl r24 = @tprel(foo#)'
3031 tls_as_opt=--fatal-warnings
3035 .section .tdata,"awT",@progbits
3039 addik r5,r20,x@TLSGD
3040 addik r5,r20,x@TLSLDM'
3043 tls_as_opt='--fatal-warnings'
3047 .section .tdata,"awT",@progbits
3051 addiu $4, $28, %tlsgd(x)
3052 addiu $4, $28, %tlsldm(x)
3053 lui $4, %dtprel_hi(x)
3054 addiu $4, $4, %dtprel_lo(x)
3055 lw $4, %gottprel(x)($28)
3056 lui $4, %tprel_hi(x)
3057 addiu $4, $4, %tprel_lo(x)'
3060 tls_as_opt='-32 --fatal-warnings'
3064 .section .tdata,"awT",@progbits
3069 move.l x@TLSGD(%a5),%a0
3070 move.l x@TLSLDM(%a5),%a0
3071 move.l x@TLSLDO(%a5),%a0
3072 move.l x@TLSIE(%a5),%a0
3073 move.l x@TLSLE(%a5),%a0'
3076 tls_as_opt='--fatal-warnings'
3080 .section ".tdata","awT",@progbits'
3083 tls_as_opt="--fatal-warnings"
3087 .section ".tdata","awT",%progbits
3091 add x0, x0, #:tlsgd_lo12:x
3096 tls_as_opt='--fatal-warnings'
3100 .extern __get_tpointer
3118 .section ".tdata","awT",@progbits
3126 addi 3,2,ld0@got@tlsgd
3132 addi 3,2,x1@got@tlsld
3138 addis 9,3,x2@dtprel@ha
3139 addi 9,9,x2@dtprel@l
3142 ld 9,x3@got@dtprel(2)
3148 tls_as_opt="-a64 --fatal-warnings"
3152 .section ".tdata","awT",@progbits
3160 addi 3,31,ld0@got@tlsgd
3162 addi 3,31,x1@got@tlsld
3165 addis 9,3,x2@dtprel@ha
3166 addi 9,9,x2@dtprel@l
3167 lwz 9,x3@got@tprel(31)
3170 addis 9,2,x2@tprel@ha
3171 addi 9,9,x2@tprel@l'
3174 tls_as_opt="-a32 --fatal-warnings"
3178 .section ".tdata","awT",@progbits
3187 l %r1,foo@GOTNTPOFF(%r12)
3188 l %r1,0(%r1):tls_load:foo
3189 bas %r14,0(%r1,%r13):tls_gdcall:foo
3190 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3193 tls_as_opt="-m31 --fatal-warnings"
3197 .section ".tdata","awT",@progbits
3205 lg %r1,foo@GOTNTPOFF(%r12)
3206 larl %r1,foo@INDNTPOFF
3207 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3208 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3211 tls_as_opt="-m64 -Aesame --fatal-warnings"
3213 sh-*-* | sh[34]-*-*)
3215 .section ".tdata","awT",@progbits
3225 tls_as_opt=--fatal-warnings
3229 sparc*-sun-solaris2.*)
3236 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3238 .section ".tdata",#alloc,#write,#tls'
3243 .section ".tdata","awT",@progbits'
3246 tls_as_opt="-32 --fatal-warnings"
3248 conftest_s="$conftest_s
3251 sethi %tgd_hi22(foo), %o0
3252 add %o0, %tgd_lo10(foo), %o1
3253 add %l7, %o1, %o0, %tgd_add(foo)
3254 call __tls_get_addr, %tgd_call(foo)
3255 sethi %tldm_hi22(foo), %l1
3256 add %l1, %tldm_lo10(foo), %l2
3257 add %l7, %l2, %o0, %tldm_add(foo)
3258 call __tls_get_addr, %tldm_call(foo)
3259 sethi %tldo_hix22(foo), %l3
3260 xor %l3, %tldo_lox10(foo), %l4
3261 add %o0, %l4, %l5, %tldo_add(foo)
3262 sethi %tie_hi22(foo), %o3
3263 add %o3, %tie_lo10(foo), %o3
3264 ld [%l7 + %o3], %o2, %tie_ld(foo)
3265 add %g7, %o2, %o4, %tie_add(foo)
3266 sethi %tle_hix22(foo), %l1
3267 xor %l1, %tle_lox10(foo), %o5
3268 ld [%g7 + %o5], %o1"
3272 .section ".tdata","awT",@progbits
3275 addli r0, zero, tls_gd(foo)
3276 auli r0, zero, tls_gd_ha16(foo)
3277 addli r0, r0, tls_gd_lo16(foo)
3279 addli r0, zero, tls_ie(foo)
3280 auli r0, r0, tls_ie_ha16(foo)
3281 addli r0, r0, tls_ie_lo16(foo)'
3284 tls_as_opt="--fatal-warnings"
3288 .section ".tdata","awT",@progbits
3291 shl16insli r0, zero, hw0_last_tls_gd(foo)
3292 shl16insli r0, zero, hw1_last_tls_gd(foo)
3293 shl16insli r0, r0, hw0_tls_gd(foo)
3295 shl16insli r0, zero, hw1_last_tls_ie(foo)
3296 shl16insli r0, r0, hw0_tls_ie(foo)'
3299 tls_as_opt="--fatal-warnings"
3303 .section ".tdata","awT",@progbits
3306 movi a8, foo@TLSFUNC
3307 movi a10, foo@TLSARG
3308 callx8.tls a8, foo@TLSCALL'
3315 if test "x$enable_tls" = xno ; then
3316 : # TLS explicitly disabled.
3317 elif test "x$enable_tls" = xyes ; then
3318 set_have_as_tls=yes # TLS explicitly enabled.
3319 elif test -z "$tls_first_major"; then
3320 : # If we don't have a check, assume no support.
3322 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3323 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3324 [set_have_as_tls=yes])
3326 if test $set_have_as_tls = yes ; then
3327 AC_DEFINE(HAVE_AS_TLS, 1,
3328 [Define if your assembler and linker support thread-local storage.])
3331 # Target-specific assembler checks.
3333 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3334 gcc_cv_ld_static_dynamic=no
3335 gcc_cv_ld_static_option='-Bstatic'
3336 gcc_cv_ld_dynamic_option='-Bdynamic'
3337 if test $in_tree_ld = yes ; then
3338 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3339 gcc_cv_ld_static_dynamic=yes
3341 elif test x$gcc_cv_ld != x; then
3342 # Check if linker supports -Bstatic/-Bdynamic option
3343 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3344 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3345 gcc_cv_ld_static_dynamic=yes
3348 # AIX ld uses -b flags
3349 *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3350 gcc_cv_ld_static_dynamic=yes
3351 gcc_cv_ld_static_option="-bstatic"
3352 gcc_cv_ld_dynamic_option="-bdynamic"
3354 # HP-UX ld uses -a flags to select between shared and archive.
3356 if test x"$gnu_ld" = xno; then
3357 gcc_cv_ld_static_dynamic=yes
3358 gcc_cv_ld_static_option="-aarchive_shared"
3359 gcc_cv_ld_dynamic_option="-adefault"
3362 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3364 gcc_cv_ld_static_dynamic=yes
3369 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3370 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3371 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3372 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3373 [Define to the linker option to disable use of shared objects.])
3374 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3375 [Define to the linker option to enable use of shared objects.])
3377 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3379 if test x"$demangler_in_ld" = xyes; then
3380 AC_MSG_CHECKING(linker --demangle support)
3381 gcc_cv_ld_demangle=no
3382 if test $in_tree_ld = yes; then
3383 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3384 gcc_cv_ld_demangle=yes
3386 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3387 # Check if the GNU linker supports --demangle option
3388 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3389 gcc_cv_ld_demangle=yes
3392 if test x"$gcc_cv_ld_demangle" = xyes; then
3393 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3394 [Define if your linker supports --demangle option.])
3396 AC_MSG_RESULT($gcc_cv_ld_demangle)
3399 AC_MSG_CHECKING(linker plugin support)
3401 if test -f liblto_plugin.la; then
3402 save_ld_ver="$ld_ver"
3403 save_ld_vers_major="$ld_vers_major"
3404 save_ld_vers_minor="$ld_vers_minor"
3405 save_ld_is_gold="$ld_is_gold"
3409 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3411 # FIXME: ld_is_gold?
3412 ld_vers_major="$gcc_cv_gld_major_version"
3413 ld_vers_minor="$gcc_cv_gld_minor_version"
3415 # Determine plugin linker version.
3416 # FIXME: Partial duplicate from above, generalize.
3418 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3419 if echo "$ld_ver" | grep GNU > /dev/null; then
3420 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3422 ld_vers=`echo $ld_ver | sed -n \
3423 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3425 ld_vers=`echo $ld_ver | sed -n \
3426 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3428 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3429 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3434 # Determine plugin support.
3435 if echo "$ld_ver" | grep GNU > /dev/null; then
3436 # Require GNU ld or gold 2.21+ for plugin support by default.
3437 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3439 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3440 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3445 ld_ver="$save_ld_ver"
3446 ld_vers_major="$save_ld_vers_major"
3447 ld_vers_minor="$save_ld_vers_minor"
3448 ld_is_gold="$save_ld_is_gold"
3450 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3451 [Define to the level of your linker's plugin support.])
3452 AC_MSG_RESULT($gcc_cv_lto_plugin)
3456 gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3457 [-mabi=lp64], [.text],,,)
3458 if test x$gcc_cv_as_aarch64_mabi = xyes; then
3459 AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3460 [Define if your assembler supports the -mabi option.])
3462 if test x$with_abi = xilp32; then
3463 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3464 Upgrade the Assembler.])
3466 if test x"$with_multilib_list" = xdefault; then
3467 TM_MULTILIB_CONFIG=lp64
3469 aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3470 for aarch64_multilib in ${aarch64_multilibs}; do
3471 case ${aarch64_multilib} in
3473 AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3474 Upgrade the Assembler.])
3484 # All TARGET_ABI_OSF targets.
3485 alpha*-*-linux* | alpha*-*-*bsd*)
3486 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3487 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3490 extbl $3, $2, $3 !lituse_bytoff!1
3491 ldq $2, a($29) !literal!1
3492 ldq $4, b($29) !literal!2
3493 ldq_u $3, 0($2) !lituse_base!1
3494 ldq $27, f($29) !literal!5
3495 jsr $26, ($27), f !lituse_jsr!5
3496 ldah $29, 0($26) !gpdisp!3
3497 lda $0, c($29) !gprel
3498 ldah $1, d($29) !gprelhigh
3499 lda $1, d($1) !gprellow
3500 lda $29, 0($29) !gpdisp!3],,
3501 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3502 [Define if your assembler supports explicit relocations.])])
3503 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3504 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3507 ldq $27, a($29) !literal!1
3508 jsr $26, ($27), a !lituse_jsrdirect!1],,
3509 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3510 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3514 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3515 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3516 [-no-mul-bug-abort], [.text],,
3517 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3518 [Define if your assembler supports the -no-mul-bug-abort option.])])
3522 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3523 [.register %g2, #scratch],,
3524 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3525 [Define if your assembler supports .register.])])
3527 gcc_GAS_CHECK_FEATURE([@%:@nobits], gcc_cv_as_sparc_nobits,,,
3528 [.section "nobits",#alloc,#write,#nobits
3529 .section "progbits",#alloc,#write,#progbits])
3530 AC_DEFINE_UNQUOTED(HAVE_AS_SPARC_NOBITS,
3531 [`if test $gcc_cv_as_sparc_nobits = yes; then echo 1; else echo 0; fi`],
3532 [Define to 1 if your assembler supports #nobits, 0 otherwise.])
3534 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3536 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3537 [Define if your assembler supports -relax option.])])
3539 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3540 gcc_cv_as_sparc_gotdata_op,,
3547 sethi %gdop_hix22(foo), %g1
3548 xor %g1, %gdop_lox10(foo), %g1
3549 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3550 [if test x$gcc_cv_ld != x \
3551 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3552 if test x$gcc_cv_objdump != x; then
3553 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3554 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3555 gcc_cv_as_sparc_gotdata_op=no
3557 gcc_cv_as_sparc_gotdata_op=yes
3562 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3563 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3565 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3566 gcc_cv_as_sparc_ua_pcrel,,
3574 .uaword %r_disp32(foo)],
3575 [if test x$gcc_cv_ld != x \
3576 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3577 gcc_cv_as_sparc_ua_pcrel=yes
3580 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3581 [Define if your assembler and linker support unaligned PC relative relocs.])
3583 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3584 gcc_cv_as_sparc_ua_pcrel_hidden,,
3589 .uaword %r_disp32(foo)
3590 .byte 0x32, 0x33, 0x34
3595 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3596 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3597 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3598 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3599 if $gcc_cv_objdump -R conftest 2> /dev/null \
3600 | grep 'DISP32' > /dev/null 2>&1; then
3603 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3607 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3608 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3609 ]) # unaligned pcrel relocs
3611 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3612 gcc_cv_as_sparc_offsetable_lo10,,
3615 or %g1, %lo(ab) + 12, %g1
3616 or %g1, %lo(ab + 12), %g1],
3617 [if test x$gcc_cv_objdump != x \
3618 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3619 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3620 gcc_cv_as_sparc_offsetable_lo10=yes
3622 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3623 [Define if your assembler supports offsetable %lo().])])
3625 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3626 gcc_cv_as_sparc_fmaf,,
3629 .register %g2, #scratch
3630 .register %g3, #scratch
3632 fmaddd %f0, %f2, %f4, %f6
3633 addxccc %g1, %g2, %g3
3634 fsrl32 %f2, %f4, %f8
3635 fnaddd %f10, %f12, %f14],,
3636 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3637 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3639 gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3640 gcc_cv_as_sparc_sparc4,,
3643 .register %g2, #scratch
3644 .register %g3, #scratch
3647 1: cwbneg %g2, %g3, 1f
3650 aes_kexpand0 %f4, %f6, %f8
3651 des_round %f38, %f40, %f42, %f44
3652 camellia_f %f54, %f56, %f58, %f60
3653 kasumi_fi_xor %f46, %f48, %f50, %f52],,
3654 [AC_DEFINE(HAVE_AS_SPARC4, 1,
3655 [Define if your assembler supports SPARC4 instructions.])])
3657 gcc_GAS_CHECK_FEATURE([LEON instructions],
3658 gcc_cv_as_sparc_leon,,
3661 .register %g2, #scratch
3662 .register %g3, #scratch
3666 casa [[%g2]] 0xb, %g3, %g1],,
3667 [AC_DEFINE(HAVE_AS_LEON, 1,
3668 [Define if your assembler supports LEON instructions.])])
3672 i[34567]86-*-* | x86_64-*-*)
3676 # Full C++ conformance when using a shared libstdc++-v3 requires some
3677 # support from the Cygwin DLL, which in more recent versions exports
3678 # wrappers to aid in interposing and redirecting operators new, delete,
3679 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3680 # are configuring for a version of Cygwin that exports the wrappers.
3681 if test x$host = x$target && test x$host_cpu = xi686; then
3682 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3684 # Can't check presence of libc functions during cross-compile, so
3685 # we just have to assume we're building for an up-to-date target.
3686 gcc_ac_cygwin_dll_wrappers=yes
3688 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3689 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3690 [Define if you want to generate code by default that assumes that the
3691 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3694 cygwin* | pe | mingw32* | interix*)
3695 # Recent binutils allows the three-operand form of ".comm" on PE. This
3696 # definition is used unconditionally to initialise the default state of
3697 # the target option variable that governs usage of the feature.
3698 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3699 [2,19,52],,[.comm foo,1,32])
3700 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3701 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3702 [Define if your assembler supports specifying the alignment
3703 of objects allocated using the GAS .comm command.])
3704 # Used for DWARF 2 in PE
3705 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3706 gcc_cv_as_ix86_pe_secrel32,
3712 [if test x$gcc_cv_ld != x \
3713 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3714 gcc_cv_as_ix86_pe_secrel32=yes
3717 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3718 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3719 # Test if the assembler supports the extended form of the .section
3720 # directive that specifies section alignment. LTO support uses this,
3721 # but normally only after installation, so we warn but don't fail the
3722 # configure if LTO is enabled but the assembler does not support it.
3723 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3724 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3725 if test x$gcc_cv_as_section_has_align != xyes; then
3726 case ",$enable_languages," in
3728 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3732 # Test if the assembler supports the section flag 'e' for specifying
3733 # an excluded section.
3734 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3738 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3739 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3740 [Define if your assembler supports specifying the section flag e.])
3744 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3745 gcc_cv_as_ix86_filds,,,
3746 [filds mem; fists mem],,
3747 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3748 [Define if your assembler uses filds and fists mnemonics.])])
3750 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3751 gcc_cv_as_ix86_fildq,,,
3752 [fildq mem; fistpq mem],,
3753 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3754 [Define if your assembler uses fildq and fistq mnemonics.])])
3756 gcc_GAS_CHECK_FEATURE([cmov syntax],
3757 gcc_cv_as_ix86_cmov_sun_syntax,,,
3758 [cmovl.l %edx, %eax],,
3759 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3760 [Define if your assembler supports the Sun syntax for cmov.])])
3762 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3763 gcc_cv_as_ix86_ffreep,,,
3765 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3766 [Define if your assembler supports the ffreep mnemonic.])])
3768 gcc_GAS_CHECK_FEATURE([.quad directive],
3769 gcc_cv_as_ix86_quad,,,
3771 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3772 [Define if your assembler supports the .quad directive.])])
3774 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3775 gcc_cv_as_ix86_sahf,,,
3778 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3779 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3781 gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
3782 gcc_cv_as_ix86_interunit_movq,,,
3786 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
3787 [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
3788 [Define if your assembler supports interunit movq mnemonic.])
3790 gcc_GAS_CHECK_FEATURE([hle prefixes],
3791 gcc_cv_as_ix86_hle,,,
3792 [lock xacquire cmpxchg %esi, (%ecx)],,
3793 [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
3794 [Define if your assembler supports HLE prefixes.])])
3796 gcc_GAS_CHECK_FEATURE([swap suffix],
3797 gcc_cv_as_ix86_swap,,,
3798 [movl.s %esp, %ebp],,
3799 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3800 [Define if your assembler supports the swap suffix.])])
3802 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3803 gcc_cv_as_ix86_diff_sect_delta,,,
3811 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3812 [Define if your assembler supports the subtraction of symbols in different sections.])])
3814 # These two are used unconditionally by i386.[ch]; it is to be defined
3815 # to 1 if the feature is present, 0 otherwise.
3816 as_ix86_gotoff_in_data_opt=
3817 if test x$gas = xyes; then
3818 as_ix86_gotoff_in_data_opt="--32"
3820 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3821 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
3822 [$as_ix86_gotoff_in_data_opt],
3828 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3829 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3830 [Define true if the assembler supports '.long foo@GOTOFF'.])
3832 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3833 gcc_cv_as_ix86_rep_lock_prefix,,,
3839 lock addl %edi, (%eax,%esi)
3840 lock orl $0, (%esp)],,
3841 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3842 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3844 gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
3845 gcc_cv_as_ix86_ud2,,,
3847 [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
3848 [Define if your assembler supports the 'ud2' mnemonic.])])
3850 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3851 gcc_cv_as_ix86_tlsgdplt,,,
3852 [call tls_gd@tlsgdplt],
3853 [if test x$gcc_cv_ld != x \
3854 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3855 gcc_cv_as_ix86_tlsgdplt=yes
3858 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3859 [Define if your assembler and linker support @tlsgdplt.])])
3862 .section .tdata,"aw'$tls_section_flag'",@progbits
3864 .section .text,"ax",@progbits
3865 call tls_ld@tlsldmplt'
3866 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3867 gcc_cv_as_ix86_tlsldmplt,,,
3869 [if test x$gcc_cv_ld != x \
3870 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3871 gcc_cv_as_ix86_tlsldmplt=yes
3874 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
3875 [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
3876 [Define to 1 if your assembler and linker support @tlsldmplt.])
3878 # Enforce 32-bit output with gas and gld.
3879 if test x$gas = xyes; then
3880 as_ix86_tls_ldm_opt="--32"
3882 if echo "$ld_ver" | grep GNU > /dev/null; then
3883 if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
3884 ld_ix86_tls_ldm_opt="-melf_i386_sol2"
3886 ld_ix86_tls_ldm_opt="-melf_i386"
3890 .section .text,"ax",@progbits
3892 .type _start, @function
3894 leal value@tlsldm(%ebx), %eax
3895 call ___tls_get_addr@plt
3897 .section .tdata,"aw'$tls_section_flag'",@progbits
3898 .type value, @object
3900 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
3901 gcc_cv_as_ix86_tlsldm,,
3902 [$as_ix86_tls_ldm_opt],
3904 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3905 && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
3906 if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
3907 || dis conftest 2>/dev/null | grep nop > /dev/null; then
3908 gcc_cv_as_ix86_tlsldm=yes
3912 AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
3913 [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
3914 [Define to 1 if your assembler and linker support @tlsldm.])
3919 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3920 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3922 addl r15 = @ltoffx(x#), gp
3924 ld8.mov r16 = [[r15]], x#],,
3925 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3926 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3932 *-*-aix*) conftest_s=' .machine "pwr5"
3936 gcc_GAS_CHECK_FEATURE([.machine directive support],
3937 gcc_cv_as_machine_directive,,,
3938 [ .machine ppc7400])
3939 if test x$gcc_cv_as_machine_directive != xyes; then
3940 echo "*** This target requires an assembler supporting \".machine\"" >&2
3941 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3942 test x$build = x$target && exit 1
3946 *) conftest_s=' .machine power4
3951 gcc_GAS_CHECK_FEATURE([mfcr field support],
3952 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3954 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3955 [Define if your assembler supports mfcr field.])])
3958 *-*-aix*) conftest_s=' .machine "pwr5"
3961 *) conftest_s=' .machine power5
3966 gcc_GAS_CHECK_FEATURE([popcntb support],
3967 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3969 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3970 [Define if your assembler supports popcntb field.])])
3973 *-*-aix*) conftest_s=' .machine "pwr5x"
3976 *) conftest_s=' .machine power5
3981 gcc_GAS_CHECK_FEATURE([fp round support],
3982 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3984 [AC_DEFINE(HAVE_AS_FPRND, 1,
3985 [Define if your assembler supports fprnd.])])
3988 *-*-aix*) conftest_s=' .machine "pwr6"
3991 *) conftest_s=' .machine power6
3996 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3997 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3999 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4000 [Define if your assembler supports mffgpr and mftgpr.])])
4003 *-*-aix*) conftest_s=' .csect .text[[PR]]
4005 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4009 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4010 *) conftest_s=' .text
4012 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4015 gcc_GAS_CHECK_FEATURE([rel16 relocs],
4016 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4018 [AC_DEFINE(HAVE_AS_REL16, 1,
4019 [Define if your assembler supports R_PPC_REL16 relocs.])])
4022 *-*-aix*) conftest_s=' .machine "pwr6"
4025 *) conftest_s=' .machine power6
4030 gcc_GAS_CHECK_FEATURE([compare bytes support],
4031 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4033 [AC_DEFINE(HAVE_AS_CMPB, 1,
4034 [Define if your assembler supports cmpb.])])
4037 *-*-aix*) conftest_s=' .machine "pwr6"
4040 *) conftest_s=' .machine power6
4045 gcc_GAS_CHECK_FEATURE([decimal float support],
4046 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4048 [AC_DEFINE(HAVE_AS_DFP, 1,
4049 [Define if your assembler supports DFP instructions.])])
4052 *-*-aix*) conftest_s=' .machine "pwr7"
4055 *) conftest_s=' .machine power7
4060 gcc_GAS_CHECK_FEATURE([vector-scalar support],
4061 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4063 [AC_DEFINE(HAVE_AS_VSX, 1,
4064 [Define if your assembler supports VSX instructions.])])
4067 *-*-aix*) conftest_s=' .machine "pwr7"
4070 *) conftest_s=' .machine power7
4075 gcc_GAS_CHECK_FEATURE([popcntd support],
4076 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4078 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4079 [Define if your assembler supports POPCNTD instructions.])])
4082 *-*-aix*) conftest_s=' .machine "pwr8"
4083 .csect .text[[PR]]';;
4084 *) conftest_s=' .machine power8
4088 gcc_GAS_CHECK_FEATURE([power8 support],
4089 gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4091 [AC_DEFINE(HAVE_AS_POWER8, 1,
4092 [Define if your assembler supports POWER8 instructions.])])
4095 *-*-aix*) conftest_s=' .csect .text[[PR]]
4097 *) conftest_s=' .text
4101 gcc_GAS_CHECK_FEATURE([lwsync support],
4102 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4104 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4105 [Define if your assembler supports LWSYNC instructions.])])
4108 *-*-aix*) conftest_s=' .machine "476"
4111 *) conftest_s=' .machine "476"
4116 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4117 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4119 [AC_DEFINE(HAVE_AS_DCI, 1,
4120 [Define if your assembler supports the DCI/ICI instructions.])])
4122 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4123 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4124 [.gnu_attribute 4,1],,
4125 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4126 [Define if your assembler supports .gnu_attribute.])])
4128 gcc_GAS_CHECK_FEATURE([tls marker support],
4129 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4130 [ bl __tls_get_addr(x@tlsgd)],,
4131 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4132 [Define if your assembler supports arg info for __tls_get_addr.])])
4136 gcc_GAS_CHECK_FEATURE([.ref support],
4137 gcc_cv_as_aix_ref, [2,21,0],,
4138 [ .csect stuff[[rw]]
4144 [AC_DEFINE(HAVE_AS_REF, 1,
4145 [Define if your assembler supports .ref])])
4151 gcc_GAS_CHECK_FEATURE([explicit relocation support],
4152 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4153 [ lw $4,%gp_rel(foo)($4)],,
4154 [if test x$target_cpu_default = x
4155 then target_cpu_default=MASK_EXPLICIT_RELOCS
4156 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4158 gcc_GAS_CHECK_FEATURE([-mno-shared support],
4159 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4160 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4161 [Define if the assembler understands -mno-shared.])])
4163 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4164 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4165 [.gnu_attribute 4,1],,
4166 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4167 [Define if your assembler supports .gnu_attribute.])])
4169 gcc_GAS_CHECK_FEATURE([.micromips support],
4170 gcc_cv_as_micromips_support,,[--fatal-warnings],
4172 [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4173 [Define if your assembler supports the .set micromips directive])])
4175 gcc_GAS_CHECK_FEATURE([.dtprelword support],
4176 gcc_cv_as_mips_dtprelword, [2,18,0],,
4177 [.section .tdata,"awT",@progbits
4181 .dtprelword x+0x8000],,
4182 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4183 [Define if your assembler supports .dtprelword.])])
4185 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4186 gcc_cv_as_mips_dspr1_mult,,,
4196 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4197 [Define if your assembler supports DSPR1 mult.])])
4199 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4200 gcc_cv_as_ld_jalr_reloc=no
4201 if test $gcc_cv_as_mips_explicit_relocs = yes; then
4202 if test $in_tree_ld = yes ; then
4203 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4204 && test $in_tree_ld_is_elf = yes; then
4205 gcc_cv_as_ld_jalr_reloc=yes
4207 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4208 echo ' .ent x' > conftest.s
4209 echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s
4210 echo ' lw $25,%call16(y)($28)' >> conftest.s
4211 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4212 echo '1: jalr $25' >> conftest.s
4213 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4214 echo '1: jalr $25' >> conftest.s
4215 echo ' .end x' >> conftest.s
4216 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4217 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4218 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4219 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4220 gcc_cv_as_ld_jalr_reloc=yes
4226 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4227 if test x$target_cpu_default = x; then
4228 target_cpu_default=MASK_RELAX_PIC_CALLS
4230 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4233 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4235 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4236 [gcc_cv_ld_mips_personality_relaxation],
4237 [gcc_cv_ld_mips_personality_relaxation=no
4238 if test $in_tree_ld = yes ; then
4239 if test "$gcc_cv_gld_major_version" -eq 2 \
4240 -a "$gcc_cv_gld_minor_version" -ge 21 \
4241 -o "$gcc_cv_gld_major_version" -gt 2; then
4242 gcc_cv_ld_mips_personality_relaxation=yes
4244 elif test x$gcc_cv_as != x \
4245 -a x$gcc_cv_ld != x \
4246 -a x$gcc_cv_readelf != x ; then
4247 cat > conftest.s <<EOF
4249 .cfi_personality 0x80,indirect_ptr
4256 .section .data,"aw",@progbits
4260 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4261 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4262 if $gcc_cv_readelf -d conftest 2>&1 \
4263 | grep TEXTREL > /dev/null 2>&1; then
4265 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4266 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4269 gcc_cv_ld_mips_personality_relaxation=yes
4273 rm -f conftest.s conftest.o conftest])
4274 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4275 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4276 [Define if your linker can relax absolute .eh_frame personality
4277 pointers into PC-relative form.])
4280 gcc_GAS_CHECK_FEATURE([-mnan= support],
4281 gcc_cv_as_mips_nan,,
4283 [AC_DEFINE(HAVE_AS_NAN, 1,
4284 [Define if the assembler understands -mnan=.])])
4285 if test x$gcc_cv_as_mips_nan = xno \
4286 && test x$with_nan != x; then
4288 [Requesting --with-nan= requires assembler support for -mnan=])
4293 # Mips and HP-UX need the GNU assembler.
4294 # Linux on IA64 might be able to use the Intel assembler.
4297 mips*-*-* | *-*-hpux* )
4298 if test x$gas_flag = xyes \
4299 || test x"$host" != x"$build" \
4300 || test ! -x "$gcc_cv_as" \
4301 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4304 echo "*** This configuration requires the GNU assembler" >&2
4310 # ??? Not all targets support dwarf2 debug_line, even within a version
4311 # of gas. Moreover, we need to emit a valid instruction to trigger any
4312 # info to the output file. So, as supported targets are added to gas 2.11,
4313 # add some instruction here to (also) show we expect this might work.
4314 # ??? Once 2.11 is released, probably need to add first known working
4315 # version to the per-target configury.
4317 aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4318 | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4319 | xstormy16 | xtensa)
4329 if test x"$insn" != x; then
4331 .file 1 \"conftest.s\"
4334 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4335 gcc_cv_as_dwarf2_debug_line,
4336 [elf,2,11,0],, [$conftest_s],
4337 [if test x$gcc_cv_objdump != x \
4338 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4339 | grep debug_line > /dev/null 2>&1; then
4340 gcc_cv_as_dwarf2_debug_line=yes
4343 # The .debug_line file table must be in the exact order that
4344 # we specified the files, since these indices are also used
4345 # by DW_AT_decl_file. Approximate this test by testing if
4346 # the assembler bitches if the same index is assigned twice.
4347 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4348 gcc_cv_as_dwarf2_file_buggy,,,
4352 if test $gcc_cv_as_dwarf2_debug_line = yes \
4353 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4354 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4355 [Define if your assembler supports dwarf2 .file/.loc directives,
4356 and preserves file table indices exactly as given.])
4359 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4360 gcc_cv_as_gdwarf2_flag,
4361 [elf,2,11,0], [--gdwarf2], [$insn],,
4362 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4363 [Define if your assembler supports the --gdwarf2 option.])])
4365 gcc_GAS_CHECK_FEATURE([--gstabs option],
4366 gcc_cv_as_gstabs_flag,
4367 [elf,2,11,0], [--gstabs], [$insn],,
4368 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4369 [Define if your assembler supports the --gstabs option.])])
4371 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4372 gcc_cv_as_debug_prefix_map_flag,
4373 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4374 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4375 [Define if your assembler supports the --debug-prefix-map option.])])
4378 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4381 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4382 [Define if your assembler supports .lcomm with an alignment field.])])
4384 if test x$with_sysroot = x && test x$host = x$target \
4385 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4386 && test "$prefix" != "NONE"; then
4387 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4388 [Define to PREFIX/include if cpp should also search that directory.])
4391 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4392 if test "x$with_headers" != x; then
4393 target_header_dir=$with_headers
4394 elif test "x$with_sysroot" = x; then
4395 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
4396 elif test "x$with_build_sysroot" != "x"; then
4397 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4398 elif test "x$with_sysroot" = xyes; then
4399 target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4401 target_header_dir="${with_sysroot}${native_system_header_dir}"
4404 target_header_dir=${native_system_header_dir}
4407 # Determine the version of glibc, if any, used on the target.
4408 AC_MSG_CHECKING([for target glibc version])
4409 AC_ARG_WITH([glibc-version],
4410 [AS_HELP_STRING([--with-glibc-version=M.N],
4411 [assume GCC used with glibc version M.N or later])], [
4412 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4413 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4414 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4416 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4418 glibc_version_major=0
4419 glibc_version_minor=0
4420 [if test -f $target_header_dir/features.h \
4421 && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \
4422 && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then
4423 glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'`
4424 glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'`
4426 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4428 AC_ARG_ENABLE(gnu-unique-object,
4429 [AS_HELP_STRING([--enable-gnu-unique-object],
4430 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4431 [case $enable_gnu_unique_object in
4433 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4434 Valid choices are 'yes' and 'no'.]) ;;
4436 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4438 [.type foo, '$target_type_format_char'gnu_unique_object],,
4439 # We need to unquote above to to use the definition from config.gcc.
4440 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4441 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4443 if test x$enable_gnu_unique_object = xyes; then
4444 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4445 [Define if your assembler supports @gnu_unique_object.])
4448 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4449 [gcc_cv_as_line_zero],
4450 [gcc_cv_as_line_zero=no
4451 if test $in_tree_gas = yes; then
4452 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4453 elif test "x$gcc_cv_as" != x; then
4454 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4455 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4456 test "x`cat conftest.out`" = x
4458 gcc_cv_as_line_zero=yes
4460 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4461 cat conftest.s >&AS_MESSAGE_LOG_FD
4462 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4463 cat conftest.out >&AS_MESSAGE_LOG_FD
4465 rm -f conftest.o conftest.s conftest.out
4467 if test "x$gcc_cv_as_line_zero" = xyes; then
4468 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4469 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4472 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4473 gcc_cv_ld_eh_frame_hdr=no
4474 if test $in_tree_ld = yes ; then
4475 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4476 && test $in_tree_ld_is_elf = yes; then
4477 gcc_cv_ld_eh_frame_hdr=yes
4479 elif test x$gcc_cv_ld != x; then
4480 if echo "$ld_ver" | grep GNU > /dev/null; then
4481 # Check if linker supports --eh-frame-hdr option
4482 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4483 gcc_cv_ld_eh_frame_hdr=yes
4488 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4489 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4490 gcc_cv_ld_eh_frame_hdr=yes
4496 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4497 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4498 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4499 [Define if your linker supports .eh_frame_hdr.])
4501 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4503 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4504 gcc_cv_ld_eh_frame_ciev3=no
4505 if test $in_tree_ld = yes ; then
4506 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4507 && test $in_tree_ld_is_elf = yes; then
4508 gcc_cv_ld_eh_frame_ciev3=yes
4510 elif test x$gcc_cv_ld != x; then
4511 if echo "$ld_ver" | grep GNU > /dev/null; then
4512 gcc_cv_ld_eh_frame_ciev3=yes
4513 if test 0"$ld_date" -lt 20040513; then
4514 if test -n "$ld_date"; then
4515 # If there was date string, but was earlier than 2004-05-13, fail
4516 gcc_cv_ld_eh_frame_ciev3=no
4517 elif test "$ld_vers_major" -lt 2; then
4518 gcc_cv_ld_eh_frame_ciev3=no
4519 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4520 gcc_cv_ld_eh_frame_ciev3=no
4526 # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4527 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4528 gcc_cv_ld_eh_frame_ciev3=yes
4534 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4535 [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4536 [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4537 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4539 AC_MSG_CHECKING(linker position independent executable support)
4541 if test $in_tree_ld = yes ; then
4542 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4543 && test $in_tree_ld_is_elf = yes; then
4546 elif test x$gcc_cv_ld != x; then
4547 # Check if linker supports -pie option
4548 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4552 if test x"$gcc_cv_ld_pie" = xyes; then
4553 AC_DEFINE(HAVE_LD_PIE, 1,
4554 [Define if your linker supports -pie option.])
4556 AC_MSG_RESULT($gcc_cv_ld_pie)
4558 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4559 gcc_cv_ld_eh_gc_sections=no
4560 if test $in_tree_ld = yes ; then
4561 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4562 && test $in_tree_ld_is_elf = yes; then
4563 gcc_cv_ld_eh_gc_sections=yes
4565 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4566 cat > conftest.s <<EOF
4569 .type _start, @function
4572 .size _start, .-_start
4573 .section .text.foo,"ax",@progbits
4574 .type foo, @function
4578 .section .gcc_except_table.foo,"a",@progbits
4581 .section .eh_frame,"a",@progbits
4584 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4585 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4586 | grep "gc-sections option ignored" > /dev/null; then
4587 gcc_cv_ld_eh_gc_sections=no
4588 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4589 | grep gcc_except_table > /dev/null; then
4590 gcc_cv_ld_eh_gc_sections=yes
4591 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4592 if test x$gcc_cv_as_comdat_group != xyes; then
4593 gcc_cv_ld_eh_gc_sections=no
4594 cat > conftest.s <<EOF
4597 .type _start, @function
4600 .size _start, .-_start
4601 .section .gnu.linkonce.t.foo,"ax",@progbits
4602 .type foo, @function
4606 .section .gcc_except_table.foo,"a",@progbits
4609 .section .eh_frame,"a",@progbits
4612 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4613 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4614 | grep "gc-sections option ignored" > /dev/null; then
4615 gcc_cv_ld_eh_gc_sections=no
4616 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4617 | grep gcc_except_table > /dev/null; then
4618 gcc_cv_ld_eh_gc_sections=yes
4624 rm -f conftest.s conftest.o conftest
4628 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4629 gcc_cv_ld_eh_gc_sections=no
4632 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4633 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4634 [Define if your linker supports garbage collection of
4635 sections in presence of EH frames.])
4637 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4639 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4640 gcc_cv_ld_eh_gc_sections_bug=no
4641 if test $in_tree_ld = yes ; then
4642 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4643 && test $in_tree_ld_is_elf = yes; then
4644 gcc_cv_ld_eh_gc_sections_bug=yes
4646 elif test x$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
4647 gcc_cv_ld_eh_gc_sections_bug=yes
4648 cat > conftest.s <<EOF
4651 .type _start, @function
4654 .size _start, .-_start
4655 .section .text.startup.foo,"ax",@progbits
4656 .type foo, @function
4660 .section .gcc_except_table.foo,"a",@progbits
4663 .section .eh_frame,"a",@progbits
4666 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4667 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4668 | grep "gc-sections option ignored" > /dev/null; then
4670 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4671 | grep gcc_except_table > /dev/null; then
4672 gcc_cv_ld_eh_gc_sections_bug=no
4675 rm -f conftest.s conftest.o conftest
4677 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4678 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4679 [Define if your linker has buggy garbage collection of
4680 sections support when .text.startup.foo like sections are used.])
4682 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4688 AC_CACHE_CHECK(linker --as-needed support,
4689 gcc_cv_ld_as_needed,
4690 [gcc_cv_ld_as_needed=no
4691 gcc_cv_ld_as_needed_option='--as-needed'
4692 gcc_cv_ld_no_as_needed_option='--no-as-needed'
4693 if test $in_tree_ld = yes ; then
4694 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4695 && test $in_tree_ld_is_elf = yes; then
4696 gcc_cv_ld_as_needed=yes
4698 elif test x$gcc_cv_ld != x; then
4699 # Check if linker supports --as-needed and --no-as-needed options
4700 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4701 gcc_cv_ld_as_needed=yes
4704 # Solaris 2 ld always supports -z ignore/-z record.
4706 gcc_cv_ld_as_needed=yes
4707 gcc_cv_ld_as_needed_option="-z ignore"
4708 gcc_cv_ld_no_as_needed_option="-z record"
4713 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
4714 # dl_iterate_phdr, i.e. since Solaris 11.
4716 *-*-solaris2.1[[1-9]]*)
4718 i?86-*-* | x86_64-*-*)
4719 if echo "$ld_ver" | grep GNU > /dev/null; then
4720 # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
4721 gcc_cv_ld_as_needed=no
4727 gcc_cv_ld_as_needed=no
4731 if test x"$gcc_cv_ld_as_needed" = xyes; then
4732 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4733 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
4734 AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
4735 [Define to the linker option to ignore unused dependencies.])
4736 AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
4737 [Define to the linker option to keep unused dependencies.])
4740 case "$target:$tm_file" in
4741 powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4744 emul_name="-melf64lppc"
4747 emul_name="-melf64ppc"
4750 emul_name="-melf64ppc_fbsd"
4753 AC_CACHE_CHECK(linker support for omitting dot symbols,
4754 gcc_cv_ld_no_dot_syms,
4755 [gcc_cv_ld_no_dot_syms=no
4756 if test x"$ld_is_gold" = xyes; then
4757 gcc_cv_ld_no_dot_syms=yes
4758 elif test $in_tree_ld = yes ; then
4759 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4760 gcc_cv_ld_no_dot_syms=yes
4762 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4763 cat > conftest1.s <<EOF
4767 cat > conftest2.s <<EOF
4768 .section ".opd","aw"
4773 .quad .LEfoo,.TOC.@tocbase,0
4779 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4780 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4781 && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4782 gcc_cv_ld_no_dot_syms=yes
4784 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4787 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4788 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4789 [Define if your PowerPC64 linker only needs function descriptor syms.])
4792 AC_CACHE_CHECK(linker large toc support,
4793 gcc_cv_ld_large_toc,
4794 [gcc_cv_ld_large_toc=no
4795 if test x"$ld_is_gold" = xyes; then
4796 gcc_cv_ld_large_toc=yes
4797 elif test $in_tree_ld = yes ; then
4798 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4799 gcc_cv_ld_large_toc=yes
4801 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4802 cat > conftest.s <<EOF
4803 .section ".tbss","awT",@nobits
4809 addis 9,13,ie0@got@tprel@ha
4810 ld 9,ie0@got@tprel@l(9)
4812 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4813 && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4814 gcc_cv_ld_large_toc=yes
4816 rm -f conftest conftest.o conftest.s
4819 if test x"$gcc_cv_ld_large_toc" = xyes; then
4820 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4821 [Define if your PowerPC64 linker supports a large TOC.])
4828 AC_CACHE_CHECK(linker large toc support,
4829 gcc_cv_ld_large_toc,
4830 [gcc_cv_ld_large_toc=no
4831 if test x$gcc_cv_as != x ; then
4832 cat > conftest.s <<EOF
4842 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
4843 gcc_cv_ld_large_toc=yes
4845 rm -f conftest conftest.o conftest.s
4848 if test x"$gcc_cv_ld_large_toc" = xyes; then
4849 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4850 [Define if your PowerPC64 linker supports a large TOC.])
4855 AC_CACHE_CHECK(linker --build-id support,
4857 [gcc_cv_ld_buildid=no
4858 if test $in_tree_ld = yes ; then
4859 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4860 "$gcc_cv_gld_minor_version" -ge 18 -o \
4861 "$gcc_cv_gld_major_version" -gt 2 \
4862 && test $in_tree_ld_is_elf = yes; then
4863 gcc_cv_ld_buildid=yes
4865 elif test x$gcc_cv_ld != x; then
4866 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4867 gcc_cv_ld_buildid=yes
4870 if test x"$gcc_cv_ld_buildid" = xyes; then
4871 AC_DEFINE(HAVE_LD_BUILDID, 1,
4872 [Define if your linker supports --build-id.])
4875 AC_ARG_ENABLE(linker-build-id,
4876 [AS_HELP_STRING([--enable-linker-build-id],
4877 [compiler will always pass --build-id to linker])],
4879 enable_linker_build_id=no)
4881 if test x"$enable_linker_build_id" = xyes; then
4882 if test x"$gcc_cv_ld_buildid" = xyes; then
4883 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4884 [Define if gcc should always pass --build-id to linker.])
4886 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4890 # In binutils 2.21, GNU ld gained support for new emulations fully
4891 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4892 AC_CACHE_CHECK(linker *_sol2 emulation support,
4893 gcc_cv_ld_sol2_emulation,
4894 [gcc_cv_ld_sol2_emulation=no
4895 if test $in_tree_ld = yes ; then
4896 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4897 "$gcc_cv_gld_minor_version" -ge 21 -o \
4898 "$gcc_cv_gld_major_version" -gt 2 \
4899 && test $in_tree_ld_is_elf = yes; then
4900 gcc_cv_ld_sol2_emulation=yes
4902 elif test x$gcc_cv_ld != x; then
4903 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4904 grep _sol2 > /dev/null; then
4905 gcc_cv_ld_sol2_emulation=yes
4908 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4909 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4910 [Define if your linker supports the *_sol2 emulations.])
4913 AC_CACHE_CHECK(linker --sysroot support,
4915 [gcc_cv_ld_sysroot=no
4916 if test $in_tree_ld = yes ; then
4917 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4918 gcc_cv_ld_sysroot=yes
4920 elif test x$gcc_cv_ld != x; then
4921 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4922 gcc_cv_ld_sysroot=yes
4925 if test x"$gcc_cv_ld_sysroot" = xyes; then
4926 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4927 [Define if your linker supports --sysroot.])
4930 # Test for stack protector support in target C library.
4931 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4932 gcc_cv_libc_provides_ssp,
4933 [gcc_cv_libc_provides_ssp=no
4935 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4936 # glibc 2.4 and later provides __stack_chk_fail and
4937 # either __stack_chk_guard, or TLS access to stack guard canary.
4938 GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
4939 [if test -f $target_header_dir/features.h \
4940 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4941 $target_header_dir/features.h > /dev/null; then
4942 if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4943 $target_header_dir/features.h > /dev/null && \
4944 test -f $target_header_dir/bits/uClibc_config.h && \
4945 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4946 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4947 gcc_cv_libc_provides_ssp=yes
4949 # all versions of Bionic support stack protector
4950 elif test -f $target_header_dir/sys/cdefs.h \
4951 && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \
4952 $target_header_dir/sys/cdefs.h > /dev/null; then
4953 gcc_cv_libc_provides_ssp=yes
4957 # Avoid complicated tests (see
4958 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4959 # simply assert that glibc does provide this, which is true for all
4960 # realistically usable GNU/Hurd configurations.
4961 gcc_cv_libc_provides_ssp=yes;;
4962 *-*-darwin* | *-*-freebsd*)
4963 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4964 [echo "no __stack_chk_fail on this target"])
4966 *) gcc_cv_libc_provides_ssp=no ;;
4969 if test x$gcc_cv_libc_provides_ssp = xyes; then
4970 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4971 [Define if your target C library provides stack protector support])
4974 # Test for <sys/sdt.h> on the target.
4975 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4976 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4978 if test -f $target_header_dir/sys/sdt.h; then
4980 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4981 [Define if your target C library provides sys/sdt.h])
4983 AC_MSG_RESULT($have_sys_sdt_h)
4985 # Check if TFmode long double should be used by default or not.
4986 # Some glibc targets used DFmode long double, but with glibc 2.4
4987 # and later they can use TFmode.
4989 powerpc*-*-linux* | \
4993 AC_ARG_WITH(long-double-128,
4994 [AS_HELP_STRING([--with-long-double-128],
4995 [use 128-bit long double by default])],
4996 gcc_cv_target_ldbl128="$with_long_double_128",
4997 [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
4998 [gcc_cv_target_ldbl128=no
4999 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5000 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5001 && gcc_cv_target_ldbl128=yes
5005 if test x$gcc_cv_target_ldbl128 = xyes; then
5006 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5007 [Define if TFmode long double should be the default])
5010 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5011 gcc_cv_target_dl_iterate_phdr=unknown
5013 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
5014 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5015 # libdl there, both complicating its use and breaking compatibility
5016 # between Solaris 10 updates.
5017 *-*-solaris2.1[[1-9]]*)
5018 # <link.h> needs both a dl_iterate_phdr declaration and support for
5019 # compilation with largefile support.
5020 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5021 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5022 gcc_cv_target_dl_iterate_phdr=yes
5024 gcc_cv_target_dl_iterate_phdr=no
5028 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5029 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5030 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5031 [Define if your target C library provides the `dl_iterate_phdr' function.])
5033 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5035 # We no longer support different GC mechanisms. Emit an error if
5036 # the user configures with --with-gc.
5038 [AS_HELP_STRING([--with-gc={page,zone}],
5039 [this option is not supported anymore. It used to choose
5040 the garbage collection mechanism to use with the compiler])],
5041 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5044 # Libraries to use on the host. This will normally be set by the top
5045 # level Makefile. Here we simply capture the value for our Makefile.
5046 if test -z "${HOST_LIBS+set}"; then
5051 # Use the system's zlib library.
5053 zlibinc="-I\$(srcdir)/../zlib"
5054 AC_ARG_WITH(system-zlib,
5055 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
5062 dnl Very limited version of automake's enable-maintainer-mode
5064 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5065 dnl maintainer-mode is disabled by default
5066 AC_ARG_ENABLE(maintainer-mode,
5067 [AS_HELP_STRING([--enable-maintainer-mode],
5068 [enable make rules and dependencies not useful
5069 (and sometimes confusing) to the casual installer])],
5070 maintainer_mode=$enableval,
5073 AC_MSG_RESULT($maintainer_mode)
5075 if test "$maintainer_mode" = "yes"; then
5082 dnl Whether to prevent multiple front-ends from linking at the same time
5084 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5085 AC_ARG_ENABLE(link-mutex,
5086 [AS_HELP_STRING([--enable-link-mutex],
5087 [avoid linking multiple front-ends at once to avoid thrashing
5088 on the build machine])],
5089 do_link_mutex=$enableval,
5091 AC_MSG_RESULT($do_link_mutex)
5093 if test "$do_link_mutex" = "yes"; then
5098 AC_SUBST(DO_LINK_MUTEX)
5104 # Make empty files to contain the specs and options for each language.
5105 # Then add #include lines to for a compiler that has specs and/or options.
5111 # These (without "all_") are set in each config-lang.in.
5112 # `language' must be a single word so is spelled singularly.
5115 all_outputs='Makefile'
5116 # List of language makefile fragments.
5118 # Additional files for gengtype
5119 all_gtfiles="$target_gtfiles"
5121 # These are the languages that are set in --enable-languages,
5122 # and are available in the GCC tree.
5123 all_selected_languages=
5125 # Add the language fragments.
5126 # Languages are added via two mechanisms. Some information must be
5127 # recorded in makefile variables, these are defined in config-lang.in.
5128 # We accumulate them and plug them into the main Makefile.
5129 # The other mechanism is a set of hooks for each of the main targets
5130 # like `clean', `install', etc.
5132 language_hooks="Make-hooks"
5134 for lang in ${srcdir}/*/config-lang.in
5137 test "$lang" = "${srcdir}/*/config-lang.in" && continue
5139 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
5140 if test "x$lang_alias" = x
5142 echo "$lang doesn't set \$language." 1>&2
5145 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5146 subdirs="$subdirs $subdir"
5148 # $gcc_subdir is where the gcc integration files are to be found
5149 # for a language, both for internal compiler purposes (compiler
5150 # sources implementing front-end to GCC tree converters), and for
5151 # build infrastructure purposes (Make-lang.in, etc.)
5153 # This will be <subdir> (relative to $srcdir) if a line like
5154 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5155 # is found in <langdir>/config-lang.in, and will remain <langdir>
5158 # Except for the language alias (fetched above), the regular
5159 # "config-lang.in" contents are always retrieved from $gcc_subdir,
5160 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5161 # only this and the language alias.
5163 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
5164 if [ "$gcc_subdir" = "" ]; then
5165 gcc_subdir="$subdir"
5168 case ",$enable_languages," in
5170 all_selected_languages="$all_selected_languages $lang_alias"
5171 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5172 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5184 . ${srcdir}/$gcc_subdir/config-lang.in
5185 if test "x$language" = x
5187 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5192 case ",$enable_languages," in
5195 for i in $subdir_requires; do
5196 test -f "${srcdir}/$i/config-lang.in" && continue
5204 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5205 if test -f $srcdir/$gcc_subdir/lang.opt; then
5206 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5207 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5209 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5210 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5212 all_languages="$all_languages $language"
5213 all_compilers="$all_compilers $compilers"
5214 all_outputs="$all_outputs $outputs"
5215 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5216 case ",$enable_languages," in
5218 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5220 AC_SUBST(enable_lto)
5227 for language in $all_selected_languages
5229 check_languages="$check_languages check-$language"
5232 # We link each language in with a set of hooks, reached indirectly via
5233 # lang.${target}. Only do so for selected languages.
5237 target_list="all.cross start.encap rest.encap tags \
5238 install-common install-man install-info install-pdf install-html dvi \
5239 pdf html uninstall info man srcextra srcman srcinfo \
5240 mostlyclean clean distclean maintainer-clean install-plugin"
5242 for t in $target_list
5245 for lang in $all_selected_languages
5249 echo "lang.$t: $x" >> Make-hooks
5253 # Option include files
5256 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5257 option_includes="option-includes.mk"
5258 AC_SUBST_FILE(option_includes)
5266 echo "dir ." > .gdbinit
5267 echo "dir ${srcdir}" >> .gdbinit
5268 if test x$gdb_needs_out_file_path = xyes
5270 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5272 if test "x$subdirs" != x; then
5275 echo "dir ${srcdir}/$s" >> .gdbinit
5278 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5279 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5281 # Put a breakpoint on __asan_report_error to help with debugging buffer
5284 *-fsanitize=address*)
5285 echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5289 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5290 AC_SUBST(gcc_tooldir)
5293 # Find a directory in which to install a shared libgcc.
5295 AC_ARG_ENABLE(version-specific-runtime-libs,
5296 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5297 [specify that runtime libraries should be
5298 installed in a compiler-specific directory])])
5300 # Substitute configuration variables
5303 AC_SUBST(all_compilers)
5304 AC_SUBST(all_gtfiles)
5305 AC_SUBST(all_lang_makefrags)
5306 AC_SUBST(all_languages)
5307 AC_SUBST(all_selected_languages)
5308 AC_SUBST(build_exeext)
5309 AC_SUBST(build_install_headers_dir)
5310 AC_SUBST(build_xm_file_list)
5311 AC_SUBST(build_xm_include_list)
5312 AC_SUBST(build_xm_defines)
5313 AC_SUBST(build_file_translate)
5314 AC_SUBST(check_languages)
5315 AC_SUBST(cpp_install_dir)
5316 AC_SUBST(xmake_file)
5317 AC_SUBST(tmake_file)
5318 AC_SUBST(TM_ENDIAN_CONFIG)
5319 AC_SUBST(TM_MULTILIB_CONFIG)
5320 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5321 AC_SUBST(extra_gcc_objs)
5322 AC_SUBST(user_headers_inc_next_pre)
5323 AC_SUBST(user_headers_inc_next_post)
5324 AC_SUBST(extra_headers_list)
5325 AC_SUBST(extra_objs)
5326 AC_SUBST(extra_programs)
5327 AC_SUBST(float_h_file)
5328 AC_SUBST(gcc_config_arguments)
5329 AC_SUBST(gcc_gxx_include_dir)
5330 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5331 AC_SUBST(host_exeext)
5332 AC_SUBST(host_xm_file_list)
5333 AC_SUBST(host_xm_include_list)
5334 AC_SUBST(host_xm_defines)
5335 AC_SUBST(out_host_hook_obj)
5337 AC_SUBST(lang_opt_files)
5338 AC_SUBST(lang_specs_files)
5339 AC_SUBST(lang_tree_files)
5340 AC_SUBST(local_prefix)
5342 AC_SUBST(objc_boehm_gc)
5344 AC_SUBST(out_object_file)
5345 AC_SUBST(common_out_file)
5346 AC_SUBST(common_out_object_file)
5347 AC_SUBST(tm_file_list)
5348 AC_SUBST(tm_include_list)
5349 AC_SUBST(tm_defines)
5350 AC_SUBST(tm_p_file_list)
5351 AC_SUBST(tm_p_include_list)
5352 AC_SUBST(xm_file_list)
5353 AC_SUBST(xm_include_list)
5354 AC_SUBST(xm_defines)
5355 AC_SUBST(use_gcc_stdint)
5356 AC_SUBST(c_target_objs)
5357 AC_SUBST(cxx_target_objs)
5358 AC_SUBST(fortran_target_objs)
5359 AC_SUBST(target_cpu_default)
5361 AC_SUBST_FILE(language_hooks)
5364 if test x${build} = x${host} ; then
5365 if test x${host} = x${target} ; then
5366 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5368 echo "Links are now set up to build a cross-compiler" 1>&2
5369 echo " from ${host} to ${target}." 1>&2
5372 if test x${host} = x${target} ; then
5373 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5374 echo " for ${target}." 1>&2
5376 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5377 echo " from ${host} to ${target}." 1>&2
5381 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5382 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5384 AC_ARG_VAR(ISLLIBS,[How to link ISL])
5385 AC_ARG_VAR(ISLINC,[How to find ISL include files])
5387 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5388 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5389 if test "x${CLOOGLIBS}" != "x" ; then
5390 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5393 # Check for plugin support
5394 AC_ARG_ENABLE(plugin,
5395 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5396 enable_plugin=$enableval,
5397 enable_plugin=yes; default_plugin=yes)
5403 if test x$build = x$host; then
5404 export_sym_check="nm${exeext} -g"
5405 elif test x$host = x$target; then
5406 export_sym_check="$gcc_cv_nm -g"
5412 if test x$build = x$host; then
5413 export_sym_check="objdump${exeext} -T"
5414 elif test x$host = x$target; then
5415 export_sym_check="$gcc_cv_objdump -T"
5422 if test x"$enable_plugin" = x"yes"; then
5424 AC_MSG_CHECKING([for exported symbols])
5425 if test "x$export_sym_check" != x; then
5426 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5427 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5428 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5429 : # No need to use a flag
5430 AC_MSG_RESULT([yes])
5432 AC_MSG_RESULT([yes])
5433 AC_MSG_CHECKING([for -rdynamic])
5434 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest$ac_exeext > /dev/null 2>&1
5435 if $export_sym_check conftest$ac_exeext | grep -q foobar > /dev/null; then
5437 pluginlibs="-rdynamic"
5442 AC_MSG_RESULT([$plugin_rdynamic])
5445 AC_MSG_RESULT([unable to check])
5450 AC_SEARCH_LIBS([dlopen], [dl])
5451 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5452 pluginlibs="$pluginlibs -ldl"
5456 # Check that we can build shared objects with -fPIC -shared
5457 saved_LDFLAGS="$LDFLAGS"
5458 saved_CFLAGS="$CFLAGS"
5461 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5462 CFLAGS="$CFLAGS -fPIC"
5463 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5466 CFLAGS="$CFLAGS -fPIC"
5467 LDFLAGS="$LDFLAGS -fPIC -shared"
5470 AC_MSG_CHECKING([for -fPIC -shared])
5472 [extern int X;],[return X == 0;],
5473 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5474 [AC_MSG_RESULT([no]); have_pic_shared=no])
5475 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5479 LDFLAGS="$saved_LDFLAGS"
5480 CFLAGS="$saved_CFLAGS"
5482 # If plugin support had been requested but not available, fail.
5483 if test x"$enable_plugin" = x"no" ; then
5484 if test x"$default_plugin" != x"yes"; then
5486 Building GCC with plugin support requires a host that supports
5487 -fPIC, -shared, -ldl and -rdynamic.])
5492 AC_SUBST(pluginlibs)
5493 AC_SUBST(enable_plugin)
5494 if test x"$enable_plugin" = x"yes"; then
5495 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5499 # Enable --enable-host-shared
5500 AC_ARG_ENABLE(host-shared,
5501 [AS_HELP_STRING([--enable-host-shared],
5502 [build host code as shared libraries])],
5503 [PICFLAG=-fPIC], [PICFLAG=])
5504 AC_SUBST(enable_host_shared)
5508 AC_ARG_ENABLE(libquadmath-support,
5509 [AS_HELP_STRING([--disable-libquadmath-support],
5510 [disable libquadmath support for Fortran])],
5511 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5512 ENABLE_LIBQUADMATH_SUPPORT=yes)
5513 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5514 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5515 [Define to 1 to enable libquadmath support])
5519 # Specify what hash style to use by default.
5520 AC_ARG_WITH([linker-hash-style],
5521 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5522 [specify the linker hash style])],
5523 [case x"$withval" in
5525 LINKER_HASH_STYLE=sysv
5528 LINKER_HASH_STYLE=gnu
5531 LINKER_HASH_STYLE=both
5534 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5537 [LINKER_HASH_STYLE=''])
5538 if test x"${LINKER_HASH_STYLE}" != x; then
5539 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5540 [The linker hash style])
5543 # Configure the subdirectories
5544 # AC_CONFIG_SUBDIRS($subdirs)
5546 # Create the Makefile
5547 # and configure language subdirectories
5548 AC_CONFIG_FILES($all_outputs)
5550 AC_CONFIG_COMMANDS([default],
5552 case ${CONFIG_HEADERS} in
5553 *auto-host.h:config.in*)
5556 # Make sure all the subdirs exist.
5557 for d in $subdirs doc build common c-family
5559 test -d $d || mkdir $d
5562 [subdirs='$subdirs'])