2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
5 # 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 3, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING3. If not see
21 #<http://www.gnu.org/licenses/>.
23 # --------------------------------
24 # Initialization and sanity checks
25 # --------------------------------
29 AC_CONFIG_SRCDIR(tree.c)
30 AC_CONFIG_HEADER(auto-host.h:config.in)
32 gcc_version=`cat $srcdir/BASE-VER`
34 # Determine the host, build, and target systems
39 # Determine the noncanonical target name, for directory use.
40 ACX_NONCANONICAL_TARGET
42 # Determine the target- and build-specific subdirectories
45 # Set program_transform_name
48 # Check for bogus environment variables.
49 # Test if LIBRARY_PATH contains the notation for the current directory
50 # since this would lead to problems installing/building glibc.
51 # LIBRARY_PATH contains the current directory if one of the following
53 # - one of the terminals (":" and ";") is the first or last sign
54 # - two terminals occur directly after each other
55 # - the path contains an element with a dot in it
56 AC_MSG_CHECKING(LIBRARY_PATH variable)
58 case ${LIBRARY_PATH} in
59 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
60 library_path_setting="contains current directory"
63 library_path_setting="ok"
67 AC_MSG_RESULT($library_path_setting)
68 if test "$library_path_setting" != "ok"; then
70 *** LIBRARY_PATH shouldn't contain the current directory when
71 *** building gcc. Please change the environment variable
72 *** and run configure again.])
75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
76 # since this would lead to problems installing/building glibc.
77 # GCC_EXEC_PREFIX contains the current directory if one of the following
79 # - one of the terminals (":" and ";") is the first or last sign
80 # - two terminals occur directly after each other
81 # - the path contains an element with a dot in it
82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
84 case ${GCC_EXEC_PREFIX} in
85 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
86 gcc_exec_prefix_setting="contains current directory"
89 gcc_exec_prefix_setting="ok"
93 AC_MSG_RESULT($gcc_exec_prefix_setting)
94 if test "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [AS_HELP_STRING([--with-local-prefix=DIR],
109 [specifies directory to put local include])],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
128 [specifies directory to put g++ header files])],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
148 gcc_gxx_include_dir_add_sysroot=0
149 if test "${with_sysroot+set}" = set; then
150 gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
151 if test "${gcc_gxx_without_sysroot}"; then
152 gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
153 gcc_gxx_include_dir_add_sysroot=1
157 AC_ARG_WITH(cpp_install_dir,
158 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
159 [install the user visible C preprocessor in DIR
160 (relative to PREFIX) as well as PREFIX/bin])],
161 [if test x$withval = xyes; then
162 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
163 elif test x$withval != xno; then
164 cpp_install_dir=$withval
167 # We would like to our source tree to be readonly. However when releases or
168 # pre-releases are generated, the flex/bison generated files as well as the
169 # various formats of manuals need to be included along with the rest of the
170 # sources. Therefore we have --enable-generated-files-in-srcdir to do
173 AC_MSG_CHECKING([whether to place generated files in the source directory])
174 dnl generated-files-in-srcdir is disabled by default
175 AC_ARG_ENABLE(generated-files-in-srcdir,
176 [AS_HELP_STRING([--enable-generated-files-in-srcdir],
177 [put copies of generated files in source dir
178 intended for creating source tarballs for users
179 without texinfo bison or flex])],
180 generated_files_in_srcdir=$enableval,
181 generated_files_in_srcdir=no)
183 AC_MSG_RESULT($generated_files_in_srcdir)
185 if test "$generated_files_in_srcdir" = "yes"; then
192 # -------------------
193 # Find default linker
194 # -------------------
198 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
199 gnu_ld_flag="$with_gnu_ld",
202 # With pre-defined ld
204 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
205 DEFAULT_LINKER="$with_ld")
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test ! -x "$DEFAULT_LINKER"; then
208 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
209 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
212 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
213 [Define to enable the use of a default linker.])
216 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
217 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
219 AC_MSG_CHECKING([whether a default linker was specified])
220 if test x"${DEFAULT_LINKER+set}" = x"set"; then
221 if test x"$gnu_ld_flag" = x"no"; then
222 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
224 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
230 # With demangler in GNU ld
231 AC_ARG_WITH(demangler-in-ld,
232 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
233 demangler_in_ld="$with_demangler_in_ld",
236 # ----------------------
237 # Find default assembler
238 # ----------------------
242 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
243 gas_flag="$with_gnu_as",
247 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
248 DEFAULT_ASSEMBLER="$with_as")
249 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
250 if test ! -x "$DEFAULT_ASSEMBLER"; then
251 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
252 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
255 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
256 [Define to enable the use of a default assembler.])
259 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
260 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
262 AC_MSG_CHECKING([whether a default assembler was specified])
263 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
264 if test x"$gas_flag" = x"no"; then
265 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
267 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
277 # If a non-executable a.out is present (e.g. created by GNU as above even if
278 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
279 # file, even when creating an executable, so an execution test fails.
280 # Remove possible default executable files to avoid this.
282 # FIXME: This really belongs into AC_PROG_CC and can be removed once
283 # Autoconf includes it.
284 rm -f a.out a.exe b.out
286 # Find the native compiler
290 ACX_PROG_GNAT([-I"$srcdir"/ada])
292 # autoconf is lame and doesn't give us any substitution variable for this.
293 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
294 NO_MINUS_C_MINUS_O=yes
296 OUTPUT_OPTION='-o $@'
298 AC_SUBST(NO_MINUS_C_MINUS_O)
299 AC_SUBST(OUTPUT_OPTION)
301 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
302 # optimizations to be activated explicitly by the toplevel.
305 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
309 # Determine PICFLAG for target gnatlib.
310 GCC_PICFLAG_FOR_TARGET
311 AC_SUBST(PICFLAG_FOR_TARGET)
313 # -------------------------
314 # Check C compiler features
315 # -------------------------
317 AC_USE_SYSTEM_EXTENSIONS
323 # sizeof(char) is 1 by definition.
324 AC_CHECK_SIZEOF(void *)
325 AC_CHECK_SIZEOF(short)
327 AC_CHECK_SIZEOF(long)
328 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
329 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
332 # ---------------------
333 # Warnings and checking
334 # ---------------------
336 # Check $CC warning features (if it's GCC).
337 # We want to use -pedantic, but we don't want warnings about
341 # * C++11 narrowing conversions in { }
342 # So, we only use -pedantic if we can disable those warnings.
344 ACX_PROG_CC_WARNING_OPTS(
345 m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])), [loose_warn])
346 ACX_PROG_CC_WARNING_OPTS(
347 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
349 ACX_PROG_CC_WARNING_OPTS(
350 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
351 ACX_PROG_CC_WARNING_OPTS(
352 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
353 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
354 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
355 [-Wno-overlength-strings])), [strict_warn])
356 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
358 # The above macros do nothing if the compiler is not GCC. However, the
359 # Makefile has more goo to add other flags, so these variables are used
360 # to enable warnings only for GCC.
363 if test "x$GCC" = "xyes"; then
364 warn_cflags='$(GCC_WARN_CFLAGS)'
365 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
367 AC_SUBST(warn_cflags)
368 AC_SUBST(warn_cxxflags)
370 # Disable exceptions and RTTI if building with g++
371 ACX_PROG_CC_WARNING_OPTS(
372 m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
374 # Enable expensive internal checks
376 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
380 AC_ARG_ENABLE(checking,
381 [AS_HELP_STRING([[--enable-checking[=LIST]]],
382 [enable expensive run-time checks. With LIST,
383 enable only specific categories of checks.
384 Categories are: yes,no,all,none,release.
385 Flags are: assert,df,fold,gc,gcac,gimple,misc,
386 rtlflag,rtl,runtime,tree,valgrind,types])],
387 [ac_checking_flags="${enableval}"],[
388 # Determine the default checks.
389 if test x$is_release = x ; then
390 ac_checking_flags=yes
392 ac_checking_flags=release
394 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
395 for check in release $ac_checking_flags
398 # these set all the flags to specific states
399 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
400 ac_fold_checking= ; ac_gc_checking=1 ;
401 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
402 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
403 ac_tree_checking=1 ; ac_valgrind_checking= ;
404 ac_types_checking=1 ;;
405 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
406 ac_fold_checking= ; ac_gc_checking= ;
407 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
408 ac_rtlflag_checking= ; ac_runtime_checking= ;
409 ac_tree_checking= ; ac_valgrind_checking= ;
410 ac_types_checking= ;;
411 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
412 ac_fold_checking=1 ; ac_gc_checking=1 ;
413 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
414 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
415 ac_tree_checking=1 ; ac_valgrind_checking= ;
416 ac_types_checking=1 ;;
417 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
418 ac_fold_checking= ; ac_gc_checking= ;
419 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
420 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
421 ac_tree_checking= ; ac_valgrind_checking= ;
422 ac_types_checking= ;;
423 # these enable particular checks
424 assert) ac_assert_checking=1 ;;
425 df) ac_df_checking=1 ;;
426 fold) ac_fold_checking=1 ;;
427 gc) ac_gc_checking=1 ;;
428 gcac) ac_gc_always_collect=1 ;;
429 gimple) ac_gimple_checking=1 ;;
430 misc) ac_checking=1 ;;
431 rtl) ac_rtl_checking=1 ;;
432 rtlflag) ac_rtlflag_checking=1 ;;
433 runtime) ac_runtime_checking=1 ;;
434 tree) ac_tree_checking=1 ;;
435 types) ac_types_checking=1 ;;
436 valgrind) ac_valgrind_checking=1 ;;
437 *) AC_MSG_ERROR(unknown check category $check) ;;
443 if test x$ac_checking != x ; then
444 AC_DEFINE(ENABLE_CHECKING, 1,
445 [Define if you want more run-time sanity checks. This one gets a grab
446 bag of miscellaneous but relatively cheap checks.])
447 nocommon_flag=-fno-common
449 AC_SUBST(nocommon_flag)
450 if test x$ac_df_checking != x ; then
451 AC_DEFINE(ENABLE_DF_CHECKING, 1,
452 [Define if you want more run-time sanity checks for dataflow.])
454 if test x$ac_assert_checking != x ; then
455 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
456 [Define if you want assertions enabled. This is a cheap check.])
458 if test x$ac_gimple_checking != x ; then
459 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
460 [Define if you want operations on GIMPLE (the basic data structure of
461 the high-level optimizers) to be checked for dynamic type safety at
462 runtime. This is moderately expensive.])
464 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
465 if test x$ac_runtime_checking != x ; then
466 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
467 [Define if you want runtime assertions enabled. This is a cheap check.])
469 if test x$ac_tree_checking != x ; then
470 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
471 [Define if you want all operations on trees (the basic data
472 structure of the front ends) to be checked for dynamic type safety
473 at runtime. This is moderately expensive. The tree browser debugging
474 routines will also be enabled by this option.
476 TREEBROWSER=tree-browser.o
478 if test x$ac_types_checking != x ; then
479 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
480 [Define if you want all gimple types to be verified after gimplifiation.
484 AC_SUBST(TREEBROWSER)
485 if test x$ac_rtl_checking != x ; then
486 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
487 [Define if you want all operations on RTL (the basic data structure
488 of the optimizer and back end) to be checked for dynamic type safety
489 at runtime. This is quite expensive.])
491 if test x$ac_rtlflag_checking != x ; then
492 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
493 [Define if you want RTL flag accesses to be checked against the RTL
494 codes that are supported for each access macro. This is relatively
497 if test x$ac_gc_checking != x ; then
498 AC_DEFINE(ENABLE_GC_CHECKING, 1,
499 [Define if you want the garbage collector to do object poisoning and
500 other memory allocation checks. This is quite expensive.])
502 if test x$ac_gc_always_collect != x ; then
503 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
504 [Define if you want the garbage collector to operate in maximally
505 paranoid mode, validating the entire heap and collecting garbage at
506 every opportunity. This is extremely expensive.])
508 if test x$ac_fold_checking != x ; then
509 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
510 [Define if you want fold checked that it never destructs its argument.
511 This is quite expensive.])
513 valgrind_path_defines=
516 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
517 dnl # an if statement. This was the source of very frustrating bugs
518 dnl # in converting to autoconf 2.5x!
519 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
521 if test x$ac_valgrind_checking != x ; then
522 # It is certainly possible that there's valgrind but no valgrind.h.
523 # GCC relies on making annotations so we must have both.
524 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
525 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
526 [[#include <valgrind/memcheck.h>
527 #ifndef VALGRIND_DISCARD
528 #error VALGRIND_DISCARD not defined
530 [gcc_cv_header_valgrind_memcheck_h=yes],
531 [gcc_cv_header_valgrind_memcheck_h=no])
532 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
533 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
534 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
535 [[#include <memcheck.h>
536 #ifndef VALGRIND_DISCARD
537 #error VALGRIND_DISCARD not defined
539 [gcc_cv_header_memcheck_h=yes],
540 [gcc_cv_header_memcheck_h=no])
541 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
542 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
543 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
544 if test "x$valgrind_path" = "x" \
545 || (test $have_valgrind_h = no \
546 && test $gcc_cv_header_memcheck_h = no \
547 && test $gcc_cv_header_valgrind_memcheck_h = no); then
548 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
550 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
551 valgrind_command="$valgrind_path -q"
552 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
553 [Define if you want to run subprograms and generated programs
554 through valgrind (a memory checker). This is extremely expensive.])
555 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
556 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
557 [Define if valgrind's valgrind/memcheck.h header is installed.])
559 if test $gcc_cv_header_memcheck_h = yes; then
560 AC_DEFINE(HAVE_MEMCHECK_H, 1,
561 [Define if valgrind's memcheck.h header is installed.])
564 AC_SUBST(valgrind_path_defines)
565 AC_SUBST(valgrind_command)
567 # Enable code coverage collection
568 AC_ARG_ENABLE(coverage,
569 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
570 [enable compiler's code coverage collection.
571 Use to measure compiler performance and locate
572 unused parts of the compiler. With LEVEL, specify
573 optimization. Values are opt, noopt,
575 [case "${enableval}" in
577 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
580 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
583 # a.k.a. --disable-coverage
587 AC_MSG_ERROR(unknown coverage setting $enableval)
591 AC_SUBST(coverage_flags)
593 AC_ARG_ENABLE(gather-detailed-mem-stats,
594 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
595 [enable detailed memory allocation stats gathering])], [],
596 [enable_gather_detailed_mem_stats=no])
597 if test x$enable_gather_detailed_mem_stats = xyes ; then
598 AC_DEFINE(GATHER_STATISTICS, 1,
599 [Define to enable detailed memory allocation stats gathering.])
602 # -------------------------------
603 # Miscenalleous configure options
604 # -------------------------------
606 # See if we are building gcc with C++.
607 AC_ARG_ENABLE(build-with-cxx,
608 [AS_HELP_STRING([--enable-build-with-cxx],
609 [build with C++ compiler instead of C compiler])],
610 ENABLE_BUILD_WITH_CXX=$enableval,
611 ENABLE_BUILD_WITH_CXX=no)
612 AC_SUBST(ENABLE_BUILD_WITH_CXX)
613 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
614 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
615 [Define if building with C++.])
620 [AS_HELP_STRING([--with-stabs],
621 [arrange to use stabs instead of host debug format])],
625 # Determine whether or not multilibs are enabled.
626 AC_ARG_ENABLE(multilib,
627 [AS_HELP_STRING([--enable-multilib],
628 [enable library support for multiple ABIs])],
629 [], [enable_multilib=yes])
630 AC_SUBST(enable_multilib)
632 # Enable __cxa_atexit for C++.
633 AC_ARG_ENABLE(__cxa_atexit,
634 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
637 # Enable C extension for decimal float if target supports it.
638 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
640 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
641 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
642 [Define to 1 to enable decimal float extension to C.])
644 # Use default_decimal_float for dependency.
645 enable_decimal_float=$default_decimal_float
647 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
648 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
649 [Define to 1 to specify that we are using the BID decimal floating
650 point format instead of DPD])
652 # Enable C extension for fixed-point arithmetic.
653 AC_ARG_ENABLE(fixed-point,
654 [AS_HELP_STRING([--enable-fixed-point],
655 [enable fixed-point arithmetic extension to C])],
660 enable_fixed_point=yes
666 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
667 enable_fixed_point=no
670 enable_fixed_point=yes
675 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
676 enable_fixed_point=no
680 AC_SUBST(enable_fixed_point)
682 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
683 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
684 [Define to 1 to enable fixed-point arithmetic extension to C.])
687 # Pass with no value to take the default
688 # Pass with a value to specify a thread package
689 AC_ARG_ENABLE(threads,
690 [AS_HELP_STRING([[--enable-threads[=LIB]]],
691 [enable thread usage for target GCC,
692 using LIB thread package])],,
696 [AS_HELP_STRING([--enable-tls],
697 [enable or disable generation of tls code
698 overriding the assembler check for tls support])],
702 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
703 Valid choices are 'yes' and 'no'.]) ;;
707 AC_ARG_ENABLE(objc-gc,
708 [AS_HELP_STRING([--enable-objc-gc],
709 [enable the use of Boehm's garbage collector with
710 the GNU Objective-C runtime])],
711 if test x$enable_objc_gc = xno; then
719 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
720 dwarf2="$with_dwarf2",
723 AC_ARG_ENABLE(shared,
724 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
726 case $enable_shared in
730 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
731 for pkg in $enableval; do
732 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
739 ], [enable_shared=yes])
740 AC_SUBST(enable_shared)
742 AC_ARG_WITH([native-system-header-dir],
743 [ --with-native-system-header-dir=dir
744 use dir as the directory to look for standard
745 system header files in. Defaults to /usr/include.],
747 case ${with_native_system_header_dir} in
748 yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
749 /* | [[A-Za-z]]:[[\\/]]*) ;;
750 *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
752 configured_native_system_header_dir="${withval}"
753 ], [configured_native_system_header_dir=])
755 AC_ARG_WITH(build-sysroot,
756 [AS_HELP_STRING([--with-build-sysroot=sysroot],
757 [use sysroot as the system root during the build])],
758 [if test x"$withval" != x ; then
759 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
761 [SYSROOT_CFLAGS_FOR_TARGET=])
762 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
765 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
766 [search for usr/lib, usr/include, et al, within DIR])],
768 case ${with_sysroot} in
769 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
770 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
773 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
774 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
776 if test "x$prefix" = xNONE; then
777 test_prefix=/usr/local
781 if test "x$exec_prefix" = xNONE; then
782 test_exec_prefix=$test_prefix
784 test_exec_prefix=$exec_prefix
786 case ${TARGET_SYSTEM_ROOT} in
787 "${test_prefix}"|"${test_prefix}/"*|\
788 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
789 '${prefix}'|'${prefix}/'*|\
790 '${exec_prefix}'|'${exec_prefix}/'*)
791 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
792 TARGET_SYSTEM_ROOT_DEFINE="$t"
797 TARGET_SYSTEM_ROOT_DEFINE=
798 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
800 AC_SUBST(TARGET_SYSTEM_ROOT)
801 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
802 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
805 [AS_HELP_STRING([--with-specs=SPECS],
806 [add SPECS to driver command-line processing])],
807 [CONFIGURE_SPECS=$withval],
810 AC_SUBST(CONFIGURE_SPECS)
812 ACX_PKGVERSION([GCC])
813 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
815 # Sanity check enable_languages in case someone does not run the toplevel
816 # configure # script.
817 AC_ARG_ENABLE(languages,
818 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
819 [case ,${enable_languages}, in
821 # go safe -- we cannot be much sure without the toplevel
823 # analysis of which target libs are present and usable
827 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
832 enable_languages=c,${enable_languages}
835 [enable_languages=c])
837 AC_ARG_WITH(multilib-list,
838 [AS_HELP_STRING([--with-multilib-list], [select multilibs (SH and x86-64 only)])],
840 with_multilib_list=default)
842 # -------------------------
843 # Checks for other programs
844 # -------------------------
848 # Find some useful tools
850 # We need awk to create options.c and options.h.
851 # Bail out if it's missing.
853 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
860 AC_SUBST(ranlib_flags)
864 # See if cmp has --ignore-initial.
865 gcc_AC_PROG_CMP_IGNORE_INITIAL
867 # See if we have the mktemp command.
868 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
870 # See if makeinfo has been installed and is modern enough
871 # that we can use it.
872 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
873 [GNU texinfo.* \([0-9][0-9.]*\)],
874 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
875 if test $gcc_cv_prog_makeinfo_modern = no; then
877 *** Makeinfo is missing or too old.
878 *** Info documentation will not be built.])
885 # Is pod2man recent enough to regenerate manpages?
886 AC_MSG_CHECKING([for recent Pod::Man])
887 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
889 GENERATED_MANPAGES=generated-manpages
894 AC_SUBST(GENERATED_MANPAGES)
896 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
899 dnl Don't use AC_PROG_LEX; we insist on flex.
900 dnl LEXLIB is not useful in gcc.
901 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
904 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
906 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
907 # check for build == host before using them.
910 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
911 && test -d ../binutils ; then
912 NM='${objdir}/../binutils/nm-new'
914 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
918 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
919 && test -d ../binutils ; then
920 AR='${objdir}/../binutils/ar'
922 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
926 # --------------------
927 # Checks for C headers
928 # --------------------
930 # Need to reject headers which give warnings, so that the -Werror bootstrap
931 # works later. *sigh* This needs to come before all header checks.
938 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
939 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
940 sys/resource.h sys/param.h sys/times.h sys/stat.h \
941 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
943 # Check for thread headers.
944 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
945 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
947 # These tests can't be done till we know if we have limits.h.
951 # ----------------------
952 # Checks for C++ headers
953 # ----------------------
955 dnl Autoconf will give an error in the configure script if there is no
956 dnl C++ preprocessor. Hack to prevent that.
957 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
959 m4_popdef([AC_MSG_ERROR])[]dnl
963 AC_CHECK_HEADERS(unordered_map)
964 AC_CHECK_HEADERS(tr1/unordered_map)
965 AC_CHECK_HEADERS(ext/hash_map)
974 # These libraries may be used by collect2.
975 # We may need a special search path to get them linked.
976 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
978 for libs in '' -lld -lmld \
979 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
980 '-L/usr/lib/cmplrs/cc3.11 -lmld'
983 AC_TRY_LINK_FUNC(ldopen,
984 [gcc_cv_collect2_libs="$libs"; break])
987 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
988 case $gcc_cv_collect2_libs in
990 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
992 AC_SUBST(COLLECT2_LIBS)
994 # When building Ada code on Alpha, we need exc_resume which is usually in
995 # -lexc. So test for it.
998 AC_SEARCH_LIBS(exc_resume, exc)
1001 AC_SUBST(GNAT_LIBEXC)
1003 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1006 AC_SEARCH_LIBS(kstat_open, kstat)
1007 EXTRA_GCC_LIBS="$LIBS"
1009 AC_SUBST(EXTRA_GCC_LIBS)
1011 # Some systems put ldexp and frexp in libm instead of libc; assume
1012 # they're both in the same place. jcf-dump needs them.
1015 AC_SEARCH_LIBS(ldexp, m)
1020 # Use <inttypes.h> only if it exists,
1021 # doesn't clash with <sys/types.h>, and declares intmax_t.
1022 AC_MSG_CHECKING(for inttypes.h)
1023 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1024 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1025 [[#include <sys/types.h>
1026 #include <inttypes.h>]],
1027 [[intmax_t i = -1;]])],
1028 [gcc_cv_header_inttypes_h=yes],
1029 [gcc_cv_header_inttypes_h=no])])
1030 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1031 if test $gcc_cv_header_inttypes_h = yes; then
1032 AC_DEFINE(HAVE_INTTYPES_H, 1,
1033 [Define if you have a working <inttypes.h> header file.])
1036 dnl Disabled until we have a complete test for buggy enum bitfields.
1037 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1039 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1040 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1041 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1042 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1043 putchar_unlocked putc_unlocked)
1044 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1045 sysconf strsignal getrusage nl_langinfo \
1046 gettimeofday mbstowcs wcswidth mmap setlocale \
1047 gcc_UNLOCKED_FUNCS madvise)
1049 if test x$ac_cv_func_mbstowcs = xyes; then
1050 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1051 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1057 [gcc_cv_func_mbstowcs_works=yes],
1058 [gcc_cv_func_mbstowcs_works=no],
1059 [gcc_cv_func_mbstowcs_works=yes])])
1060 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1061 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1062 [Define this macro if mbstowcs does not crash when its
1063 first argument is NULL.])
1067 AC_CHECK_TYPE(ssize_t, int)
1068 AC_CHECK_TYPE(caddr_t, char *)
1070 gcc_AC_FUNC_MMAP_BLACKLIST
1074 # Under VMS, vfork works very differently than on Unix. The standard test
1075 # won't work, and it isn't easily adaptable. It makes more sense to
1077 ac_cv_func_vfork_works=yes
1082 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
1083 # iconv() prototype.
1084 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1085 [AC_LANG_PUSH([C++])
1087 AC_LANG_POP([C++])],
1090 # Until we have in-tree GNU iconv:
1092 AC_SUBST(LIBICONV_DEP)
1098 # We will need to find libiberty.h and ansidecl.h
1099 saved_CFLAGS="$CFLAGS"
1100 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1101 saved_CXXFLAGS="$CXXFLAGS"
1102 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include"
1103 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1104 strsignal strstr stpcpy strverscmp \
1105 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1106 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1107 #include "ansidecl.h"
1108 #include "system.h"])
1110 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1111 #include "ansidecl.h"
1113 #ifdef HAVE_SYS_RESOURCE_H
1114 #include <sys/resource.h>
1118 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1119 #include "ansidecl.h"
1121 #ifdef HAVE_SYS_RESOURCE_H
1122 #include <sys/resource.h>
1124 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1125 [Define to `long' if <sys/resource.h> doesn't define.])])
1127 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1128 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1129 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1130 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1131 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1132 #include "ansidecl.h"
1141 gcc_AC_CHECK_DECLS(times, , ,[
1142 #include "ansidecl.h"
1144 #ifdef HAVE_SYS_TIMES_H
1145 #include <sys/times.h>
1149 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1150 #include "ansidecl.h"
1155 # g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
1157 AS_IF([test "$ENABLE_BUILD_WITH_CXX" = "yes"],
1158 [AC_LANG_PUSH([C++])
1159 gcc_AC_CHECK_DECLS(madvise, , ,[
1160 #include "ansidecl.h"
1163 AC_LANG_POP([C++])],
1164 [gcc_AC_CHECK_DECLS(madvise, , ,[
1165 #include "ansidecl.h"
1170 # More time-related stuff.
1171 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1172 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1173 #include "ansidecl.h"
1175 #ifdef HAVE_SYS_TIMES_H
1176 #include <sys/times.h>
1178 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1179 if test $ac_cv_struct_tms = yes; then
1180 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1181 [Define if <sys/times.h> defines struct tms.])
1184 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1185 # revisit after autoconf 2.50.
1186 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1187 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1188 #include "ansidecl.h"
1190 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1191 if test $gcc_cv_type_clock_t = yes; then
1192 AC_DEFINE(HAVE_CLOCK_T, 1,
1193 [Define if <time.h> defines clock_t.])
1196 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1197 CFLAGS="$saved_CFLAGS"
1198 CXXFLAGS="$saved_CXXFLAGS"
1200 # mkdir takes a single argument on some systems.
1201 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1209 # With Setjmp/Longjmp based exception handling.
1210 AC_ARG_ENABLE(sjlj-exceptions,
1211 [AS_HELP_STRING([--enable-sjlj-exceptions],
1212 [arrange to use setjmp/longjmp exception handling])],
1215 if test $enableval != yes; then
1216 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1221 force_sjlj_exceptions=yes],
1224 force_sjlj_exceptions=yes
1228 force_sjlj_exceptions=no
1231 if test $force_sjlj_exceptions = yes; then
1232 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1233 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1234 [Define 0/1 to force the choice for exception handling model.])
1237 # --------------------------------------------------------
1238 # Build, host, and target specific configuration fragments
1239 # --------------------------------------------------------
1241 # Collect build-machine-specific information.
1242 . ${srcdir}/config.build
1244 # Collect host-machine-specific information.
1245 . ${srcdir}/config.host
1249 # Collect target-machine-specific information.
1250 . ${srcdir}/config.gcc
1252 extra_objs="${host_extra_objs} ${extra_objs}"
1253 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1255 # Default the target-machine variables that were not explicitly set.
1256 if test x"$tm_file" = x
1257 then tm_file=$cpu_type/$cpu_type.h; fi
1259 if test x"$extra_headers" = x
1260 then extra_headers=; fi
1262 if test x$md_file = x
1263 then md_file=$cpu_type/$cpu_type.md; fi
1265 if test x$out_file = x
1266 then out_file=$cpu_type/$cpu_type.c; fi
1268 if test x"$tmake_file" = x
1269 then tmake_file=$cpu_type/t-$cpu_type
1272 # Support --enable-initfini-array.
1273 if test x$enable_initfini_array != xno; then
1274 tm_file="${tm_file} initfini-array.h"
1277 if test x"$dwarf2" = xyes
1278 then tm_file="$tm_file tm-dwarf2.h"
1281 # Say what files are being used for the output code and MD file.
1282 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1283 echo "Using \`$srcdir/config/$md_file' as machine description file."
1285 # If any of the xm_file variables contain nonexistent files, warn
1286 # about them and drop them.
1289 for x in $build_xm_file; do
1290 if test -f $srcdir/config/$x
1292 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1298 for x in $host_xm_file; do
1299 if test -f $srcdir/config/$x
1301 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1307 for x in $xm_file; do
1308 if test -f $srcdir/config/$x
1310 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1316 for f in $tm_file; do
1319 if test $count = ax; then
1320 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1322 echo "Using the following target machine macro files:"
1323 for f in $tm_file; do
1324 echo " $srcdir/config/$f"
1328 if test x$need_64bit_hwint = xyes; then
1329 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1330 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1333 if test x$use_long_long_for_widest_fast_int = xyes; then
1334 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1335 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1336 efficiently supported by the host hardware.])
1340 for f in $host_xm_file; do
1343 if test $count = a; then
1345 elif test $count = ax; then
1346 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1348 echo "Using the following host machine macro files:"
1349 for f in $host_xm_file; do
1350 echo " $srcdir/config/$f"
1353 echo "Using ${out_host_hook_obj} for host machine hooks."
1355 if test "$host_xm_file" != "$build_xm_file"; then
1357 for f in $build_xm_file; do
1360 if test $count = a; then
1362 elif test $count = ax; then
1363 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1365 echo "Using the following build machine macro files:"
1366 for f in $build_xm_file; do
1367 echo " $srcdir/config/$f"
1372 if test -n "$configured_native_system_header_dir"; then
1373 native_system_header_dir=$configured_native_system_header_dir
1375 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1376 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1380 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1381 gcc_cv_mcontext_underscores,
1383 #include <sys/cdefs.h>
1384 #include <sys/signal.h>
1385 #include <ucontext.h>
1386 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1388 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1389 if test $gcc_cv_mcontext_underscores = yes; then
1390 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1391 [mcontext_t fields start with __])
1400 # Check if a valid thread package
1401 case ${enable_threads} in
1404 target_thread_file='single'
1408 target_thread_file='single'
1410 aix | dce | lynx | mipssde | posix | rtems | \
1411 single | tpf | vxworks | win32)
1412 target_thread_file=${enable_threads}
1415 echo "${enable_threads} is an unknown thread package" 1>&2
1420 if test x${thread_file} = x; then
1421 # No thread file set by target-specific clauses in config.gcc,
1422 # so use file chosen by default logic above
1423 thread_file=${target_thread_file}
1431 if test x$enable___cxa_atexit = xyes || \
1432 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1433 if test x$host = x$target; then
1435 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1436 # keyed to flag_use_cxa_atexit
1441 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1442 [echo "__cxa_atexit can't be enabled on this target"])
1446 # We can't check for __cxa_atexit when building a cross, so assume
1450 if test x$use_cxa_atexit = xyes; then
1451 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1452 [Define if you want to use __cxa_atexit, rather than atexit, to
1453 register C++ destructors for local statics and global objects.
1454 This is essential for fully standards-compliant handling of
1455 destructors, but requires __cxa_atexit in libc.])
1459 # Look for a file containing extra machine modes.
1460 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1461 extra_modes_file='$(srcdir)'/config/${extra_modes}
1462 AC_SUBST(extra_modes_file)
1463 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1464 [Define to the name of a file containing a list of extra machine modes
1465 for this architecture.])
1468 # Convert extra_options into a form suitable for Makefile use.
1471 for f in $extra_options; do
1472 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1473 all_opt_files="$all_opt_files $srcdir/config/$f"
1475 AC_SUBST(extra_opt_files)
1477 # auto-host.h is the file containing items generated by autoconf and is
1478 # the first file included by config.h.
1479 # If host=build, it is correct to have bconfig include auto-host.h
1480 # as well. If host!=build, we are in error and need to do more
1481 # work to find out the build config parameters.
1482 if test x$host = x$build
1484 build_auto=auto-host.h
1486 # We create a subdir, then run autoconf in the subdir.
1487 # To prevent recursion we set host and build for the new
1488 # invocation of configure to the build for this invocation
1495 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1496 *) realsrcdir=../${srcdir};;
1498 saved_CFLAGS="${CFLAGS}"
1499 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1500 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1501 ${realsrcdir}/configure \
1502 --enable-languages=${enable_languages-all} \
1503 --target=$target_alias --host=$build_alias --build=$build_alias
1504 CFLAGS="${saved_CFLAGS}"
1506 # We just finished tests for the build machine, so rename
1507 # the file auto-build.h in the gcc directory.
1508 mv auto-host.h ../auto-build.h
1511 build_auto=auto-build.h
1513 AC_SUBST(build_subdir)
1515 tm_file="${tm_file} defaults.h"
1516 tm_p_file="${tm_p_file} tm-preds.h"
1517 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1518 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1519 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1520 # put this back in temporarily.
1521 xm_file="auto-host.h ansidecl.h ${xm_file}"
1528 # Compile in configure arguments.
1529 if test -f configargs.h ; then
1530 # Being re-configured.
1531 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1532 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1534 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1537 # Double all backslashes and backslash all quotes to turn
1538 # gcc_config_arguments into a C string.
1539 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1540 $gcc_config_arguments
1542 gcc_config_arguments_str=`cat conftest.out`
1545 cat > configargs.h <<EOF
1546 /* Generated automatically. */
1547 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1548 static const char thread_model[] = "$thread_file";
1550 static const struct {
1551 const char *name, *value;
1552 } configure_default_options[] = $configure_default_options;
1557 gcc_BASEVER=`cat $srcdir/BASE-VER`
1558 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1559 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1560 if test -f $srcdir/REVISION ; then
1561 gcc_REVISION=`cat $srcdir/REVISION`
1565 cat > plugin-version.h <<EOF
1566 #include "configargs.h"
1568 #define GCCPLUGIN_VERSION_MAJOR `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1569 #define GCCPLUGIN_VERSION_MINOR `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1570 #define GCCPLUGIN_VERSION_PATCHLEVEL `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1571 #define GCCPLUGIN_VERSION (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1573 static char basever[] = "$gcc_BASEVER";
1574 static char datestamp[] = "$gcc_DATESTAMP";
1575 static char devphase[] = "$gcc_DEVPHASE";
1576 static char revision[] = "$gcc_REVISION";
1578 /* FIXME plugins: We should make the version information more precise.
1579 One way to do is to add a checksum. */
1581 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1583 configuration_arguments};
1587 # Internationalization
1588 ZW_GNU_GETTEXT_SISTER_DIR
1590 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1591 # -liconv on the link line twice.
1592 case "$LIBINTL" in *$LIBICONV*)
1596 AC_ARG_ENABLE(secureplt,
1597 [AS_HELP_STRING([--enable-secureplt],
1598 [enable -msecure-plt by default for PowerPC])],
1601 AC_ARG_ENABLE(leading-mingw64-underscores,
1602 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1603 [enable leading underscores on 64 bit mingw targets]),
1605 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1606 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1607 [Define if we should use leading underscore on 64 bit mingw targets])])
1610 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1613 AC_ARG_ENABLE(frame-pointer,
1614 [AS_HELP_STRING([--enable-frame-pointer],
1615 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1618 linux* | darwin[[8912]]*)
1619 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1621 enable_frame_pointer=no
1624 enable_frame_pointer=yes
1629 # Windows32 Registry support for specifying GCC installation paths.
1630 AC_ARG_ENABLE(win32-registry,
1631 [AS_HELP_STRING([--disable-win32-registry],
1632 [disable lookup of installation paths in the
1633 Registry on Windows hosts])
1634 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1635 AS_HELP_STRING([--enable-win32-registry=KEY],
1636 [use KEY instead of GCC version as the last portion
1637 of the registry key])],,)
1640 win32 | pe | cygwin* | mingw32* | uwin*)
1641 if test "x$enable_win32_registry" != xno; then
1642 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1645 if test "x$enable_win32_registry" != xno; then
1646 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1647 [Define to 1 if installation paths should be looked up in the Windows
1648 Registry. Ignored on non-Windows hosts.])
1650 if test "x$enable_win32_registry" != xyes \
1651 && test "x$enable_win32_registry" != x; then
1652 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1653 [Define to be the last component of the Windows registry key under which
1654 to look for installation paths. The full key used will be
1655 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1656 The default is the GCC version number.])
1662 # Get an absolute path to the GCC top-level source directory
1663 holddir=`${PWDCMD-pwd}`
1665 topdir=`${PWDCMD-pwd}`
1668 # Conditionalize the makefile for this host machine.
1670 for f in ${host_xmake_file}
1672 if test -f ${srcdir}/config/$f
1674 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1678 # Conditionalize the makefile for this target machine.
1680 for f in ${tmake_file}
1682 if test -f ${srcdir}/config/$f
1684 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1687 tmake_file="${tmake_file_}"
1689 out_object_file=`basename $out_file .c`.o
1690 common_out_object_file=`basename $common_out_file .c`.o
1692 tm_file_list="options.h"
1693 tm_include_list="options.h insn-constants.h"
1694 for f in $tm_file; do
1697 f=`echo $f | sed 's/^..//'`
1698 tm_file_list="${tm_file_list} $f"
1699 tm_include_list="${tm_include_list} $f"
1702 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1703 tm_include_list="${tm_include_list} $f"
1706 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1707 tm_include_list="${tm_include_list} config/$f"
1714 for f in $tm_p_file; do
1717 tm_p_file_list="${tm_p_file_list} $f"
1718 tm_p_include_list="${tm_p_include_list} $f"
1721 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1722 tm_p_include_list="${tm_p_include_list} config/$f"
1728 for f in $xm_file; do
1731 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1732 xm_include_list="${xm_include_list} $f"
1735 xm_file_list="${xm_file_list} $f"
1736 xm_include_list="${xm_include_list} $f"
1739 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1740 xm_include_list="${xm_include_list} config/$f"
1746 host_xm_include_list=
1747 for f in $host_xm_file; do
1750 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1751 host_xm_include_list="${host_xm_include_list} $f"
1754 host_xm_file_list="${host_xm_file_list} $f"
1755 host_xm_include_list="${host_xm_include_list} $f"
1758 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1759 host_xm_include_list="${host_xm_include_list} config/$f"
1765 for f in $build_xm_file; do
1768 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1769 build_xm_include_list="${build_xm_include_list} $f"
1771 auto-build.h | auto-host.h )
1772 build_xm_file_list="${build_xm_file_list} $f"
1773 build_xm_include_list="${build_xm_include_list} $f"
1776 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1777 build_xm_include_list="${build_xm_include_list} config/$f"
1782 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1783 # cross-compiler which does not use the native headers and libraries.
1784 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1785 CROSS= AC_SUBST(CROSS)
1786 ALL=all.internal AC_SUBST(ALL)
1787 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1789 if test "x$with_build_sysroot" != x; then
1790 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1792 # This value is used, even on a native system, because
1793 # CROSS_SYSTEM_HEADER_DIR is just
1794 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1795 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1798 if test x$host != x$target
1800 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1802 SYSTEM_HEADER_DIR=$build_system_header_dir
1803 case "$host","$target" in
1804 # Darwin crosses can use the host system's libraries and headers,
1805 # because of the fat library support. Of course, it must be the
1806 # same version of Darwin on both sides. Allow the user to
1807 # just say --target=foo-darwin without a version number to mean
1808 # "the version on this system".
1809 *-*-darwin*,*-*-darwin*)
1810 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1811 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1812 if test $hostos = $targetos -o $targetos = darwin ; then
1814 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1819 i?86-*-*,x86_64-*-* \
1820 | powerpc*-*-*,powerpc64*-*-*)
1821 CROSS="$CROSS -DNATIVE_CROSS" ;;
1826 if test "x$with_headers" = x; then
1833 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1834 SYSTEM_HEADER_DIR=$build_system_header_dir
1837 # If this is a cross-compiler that does not
1838 # have its own set of headers then define
1841 # If this is using newlib, without having the headers available now,
1842 # then define inhibit_libc in LIBGCC2_CFLAGS.
1843 # This prevents libgcc2 from containing any code which requires libc
1845 : ${inhibit_libc=false}
1846 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1847 test x$with_newlib = xyes ; } &&
1848 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1851 AC_SUBST(inhibit_libc)
1853 # When building gcc with a cross-compiler, we need to adjust things so
1854 # that the generator programs are still built with the native compiler.
1855 # Also, we cannot run fixincludes.
1857 # These are the normal (build=host) settings:
1858 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1859 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1860 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1861 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1863 # And these apply if build != host, or we are generating coverage data
1864 if test x$build != x$host || test "x$coverage_flags" != x
1866 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1867 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1870 # Expand extra_headers to include complete path.
1871 # This substitutes for lots of t-* files.
1873 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1874 for file in ${extra_headers} ; do
1875 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1878 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1879 if test x"$use_gcc_tgmath" = xyes
1880 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1883 # Define collect2 in Makefile.
1884 case $host_can_use_collect2 in
1886 *) collect2='collect2$(exeext)' ;;
1888 AC_SUBST([collect2])
1890 # Add a definition of USE_COLLECT2 if system wants one.
1891 case $use_collect2 in
1892 no) use_collect2= ;;
1895 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1896 xm_defines="${xm_defines} USE_COLLECT2"
1897 case $host_can_use_collect2 in
1899 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1905 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1906 [Define to the name of the LTO plugin DSO that must be
1907 passed to the linker's -plugin=LIB option.])
1909 # ---------------------------
1910 # Assembler & linker features
1911 # ---------------------------
1913 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1914 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1915 # However when ld-new is first executed from the build tree, libtool will
1916 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1917 # to the build tree. While doing this we need to use the previous-stage
1918 # linker, or we have an infinite loop. The presence of a shell script as
1919 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1920 # the gcc/collect-ld script. So we need to know how libtool works, or
1921 # exec-tool will fail.
1923 m4_defun([_LT_CONFIG_COMMANDS], [])
1926 AC_SUBST(enable_fast_install)
1928 # Identify the assembler which will work hand-in-glove with the newly
1929 # built GCC, so that we can examine its features. This is the assembler
1930 # which will be driven by the driver program.
1932 # If build != host, and we aren't building gas in-tree, we identify a
1933 # build->target assembler and hope that it will have the same features
1934 # as the host->target assembler we'll be using.
1935 gcc_cv_gas_major_version=
1936 gcc_cv_gas_minor_version=
1937 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1939 m4_pattern_allow([AS_FOR_TARGET])dnl
1940 AS_VAR_SET_IF(gcc_cv_as,, [
1941 if test -x "$DEFAULT_ASSEMBLER"; then
1942 gcc_cv_as="$DEFAULT_ASSEMBLER"
1943 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1944 && test -f ../gas/Makefile \
1945 && test x$build = x$host; then
1946 gcc_cv_as=../gas/as-new$build_exeext
1947 elif test -x as$build_exeext; then
1948 # Build using assembler in the current directory.
1949 gcc_cv_as=./as$build_exeext
1950 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1951 gcc_cv_as="$AS_FOR_TARGET"
1953 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1956 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1957 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1958 case "$ORIGINAL_AS_FOR_TARGET" in
1959 ./as | ./as$build_exeext) ;;
1960 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1963 AC_MSG_CHECKING(what assembler to use)
1964 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1965 # Single tree build which includes gas. We want to prefer it
1966 # over whatever linker top-level may have detected, since
1967 # we'll use what we're building after installation anyway.
1968 AC_MSG_RESULT(newly built gas)
1970 _gcc_COMPUTE_GAS_VERSION
1971 in_tree_gas_is_elf=no
1972 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1973 || (grep 'obj_format = multi' ../gas/Makefile \
1974 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1976 in_tree_gas_is_elf=yes
1979 AC_MSG_RESULT($gcc_cv_as)
1983 # Identify the linker which will work hand-in-glove with the newly
1984 # built GCC, so that we can examine its features. This is the linker
1985 # which will be driven by the driver program.
1987 # If build != host, and we aren't building gas in-tree, we identify a
1988 # build->target linker and hope that it will have the same features
1989 # as the host->target linker we'll be using.
1990 gcc_cv_gld_major_version=
1991 gcc_cv_gld_minor_version=
1992 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1993 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1995 AS_VAR_SET_IF(gcc_cv_ld,, [
1996 if test -x "$DEFAULT_LINKER"; then
1997 gcc_cv_ld="$DEFAULT_LINKER"
1998 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1999 && test -f ../ld/Makefile \
2000 && test x$build = x$host; then
2001 gcc_cv_ld=../ld/ld-new$build_exeext
2002 elif test -x collect-ld$build_exeext; then
2003 # Build using linker in the current directory.
2004 gcc_cv_ld=./collect-ld$build_exeext
2005 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2006 gcc_cv_ld="$LD_FOR_TARGET"
2008 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2011 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2012 PLUGIN_LD=`basename $gcc_cv_ld`
2013 AC_ARG_WITH(plugin-ld,
2014 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2015 [if test x"$withval" != x; then
2016 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2017 PLUGIN_LD="$withval"
2019 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2020 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
2022 # Check to see if we are using gold instead of ld
2023 AC_MSG_CHECKING(whether we are using gold)
2025 if test x$gcc_cv_ld != x; then
2026 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2027 | grep "GNU gold" > /dev/null; then
2031 AC_MSG_RESULT($ld_is_gold)
2033 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2034 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2035 case "$ORIGINAL_LD_FOR_TARGET" in
2036 ./collect-ld | ./collect-ld$build_exeext) ;;
2037 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2040 AC_MSG_CHECKING(what linker to use)
2041 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2042 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2043 # Single tree build which includes ld. We want to prefer it
2044 # over whatever linker top-level may have detected, since
2045 # we'll use what we're building after installation anyway.
2046 AC_MSG_RESULT(newly built ld)
2048 in_tree_ld_is_elf=no
2049 if (grep 'EMUL = .*elf' ../ld/Makefile \
2050 || grep 'EMUL = .*linux' ../ld/Makefile \
2051 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2052 in_tree_ld_is_elf=yes
2053 elif test "$ld_is_gold" = yes; then
2054 in_tree_ld_is_elf=yes
2056 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
2059 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
2060 if test x$gcc_cv_gld_version != x; then
2064 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2065 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2068 AC_MSG_RESULT($gcc_cv_ld)
2072 # Figure out what nm we will be using.
2073 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2074 AS_VAR_SET_IF(gcc_cv_nm,, [
2075 if test -f $gcc_cv_binutils_srcdir/configure.in \
2076 && test -f ../binutils/Makefile \
2077 && test x$build = x$host; then
2078 gcc_cv_nm=../binutils/nm-new$build_exeext
2079 elif test -x nm$build_exeext; then
2080 gcc_cv_nm=./nm$build_exeext
2081 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2082 gcc_cv_nm="$NM_FOR_TARGET"
2084 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2087 AC_MSG_CHECKING(what nm to use)
2088 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2089 # Single tree build which includes binutils.
2090 AC_MSG_RESULT(newly built nm)
2093 AC_MSG_RESULT($gcc_cv_nm)
2097 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2098 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2099 case "$ORIGINAL_NM_FOR_TARGET" in
2100 ./nm | ./nm$build_exeext) ;;
2101 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2105 # Figure out what objdump we will be using.
2106 AS_VAR_SET_IF(gcc_cv_objdump,, [
2107 if test -f $gcc_cv_binutils_srcdir/configure.in \
2108 && test -f ../binutils/Makefile \
2109 && test x$build = x$host; then
2110 # Single tree build which includes binutils.
2111 gcc_cv_objdump=../binutils/objdump$build_exeext
2112 elif test -x objdump$build_exeext; then
2113 gcc_cv_objdump=./objdump$build_exeext
2114 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2115 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2117 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2120 AC_MSG_CHECKING(what objdump to use)
2121 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2122 # Single tree build which includes binutils.
2123 AC_MSG_RESULT(newly built objdump)
2124 elif test x$gcc_cv_objdump = x; then
2125 AC_MSG_RESULT(not found)
2127 AC_MSG_RESULT($gcc_cv_objdump)
2130 # Figure out what readelf we will be using.
2131 AS_VAR_SET_IF(gcc_cv_readelf,, [
2132 if test -f $gcc_cv_binutils_srcdir/configure.in \
2133 && test -f ../binutils/Makefile \
2134 && test x$build = x$host; then
2135 # Single tree build which includes binutils.
2136 gcc_cv_readelf=../binutils/readelf$build_exeext
2137 elif test -x readelf$build_exeext; then
2138 gcc_cv_readelf=./readelf$build_exeext
2140 AC_PATH_PROG(gcc_cv_readelf, readelf)
2143 AC_MSG_CHECKING(what readelf to use)
2144 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2145 # Single tree build which includes binutils.
2146 AC_MSG_RESULT(newly built readelf)
2147 elif test x$gcc_cv_readelf = x; then
2148 AC_MSG_RESULT(not found)
2150 AC_MSG_RESULT($gcc_cv_readelf)
2153 # Figure out what assembler alignment features are present.
2154 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2158 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2159 [Define if your assembler supports .balign and .p2align.])])
2161 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2164 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2165 [Define if your assembler supports specifying the maximum number
2166 of bytes to skip when using the GAS .p2align command.])])
2168 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2171 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2172 [Define if your assembler supports .literal16.])])
2174 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2176 [conftest_label1: .word 0
2178 conftest_label2: .word 0
2180 [if test x$gcc_cv_nm != x; then
2181 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2182 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2183 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2185 else gcc_cv_as_subsection_m1=yes
2187 rm -f conftest.nm1 conftest.nm2
2189 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2190 [Define if your assembler supports .subsection and .subsection -1 starts
2191 emitting at the beginning of your section.])])
2193 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2196 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2198 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2200 [ .weakref foobar, barfnot],,
2201 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2203 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2206 .NSUBSPA $CODE$,COMDAT],,
2207 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2209 # .hidden needs to be supported in both the assembler and the linker,
2210 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2211 # This is irritatingly difficult to feature test for; we have to check the
2212 # date string after the version number. If we've got an in-tree
2213 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2215 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2216 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2220 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2221 # STV_HIDDEN, so disable .hidden support if so.
2223 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2224 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2225 cat > conftest.s <<EOF
2232 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2233 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2234 grep '\.hidden default' > /dev/null; then
2237 gcc_cv_as_hidden=yes
2240 # Assume bug is present if objdump is missing.
2245 gcc_cv_as_hidden=yes
2250 # Darwin as has some visibility support, though with a different syntax.
2251 gcc_cv_as_hidden=yes
2255 # gnu_indirect_function type is an extension proposed at
2256 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2257 # selection of function implementation
2258 AC_ARG_ENABLE(gnu-indirect-function,
2259 [AS_HELP_STRING([--enable-gnu-indirect-function],
2260 [enable the use of the @gnu_indirect_function to glibc systems])],
2261 [case $enable_gnu_indirect_function in
2263 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2264 Valid choices are 'yes' and 'no'.]) ;;
2266 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2267 if test x$enable_gnu_indirect_function = xyes; then
2268 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2269 [Define if your system supports gnu indirect functions.])
2273 if test $in_tree_ld != yes ; then
2274 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2275 if echo "$ld_ver" | grep GNU > /dev/null; then
2276 if test x"$ld_is_gold" = xyes; then
2277 # GNU gold --version looks like this:
2279 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2281 # We extract the binutils version which is more familiar and specific
2282 # than the gold version.
2283 ld_vers=`echo $ld_ver | sed -n \
2284 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2286 # GNU ld --version looks like this:
2288 # GNU ld (GNU Binutils) 2.21.51.20110225
2289 ld_vers=`echo $ld_ver | sed -n \
2290 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2292 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2293 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2294 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2295 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2300 # Solaris 2 ld -V output looks like this for a regular version:
2302 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2304 # but test versions add stuff at the end:
2306 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2308 ld_ver=`$gcc_cv_ld -V 2>&1`
2309 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2310 ld_vers=`echo $ld_ver | sed -n \
2311 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2312 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2313 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2321 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2322 [[if test $in_tree_ld = yes ; then
2324 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2325 && test $in_tree_ld_is_elf = yes; then
2326 gcc_cv_ld_hidden=yes
2329 gcc_cv_ld_hidden=yes
2330 if test x"$ld_is_gold" = xyes; then
2332 elif echo "$ld_ver" | grep GNU > /dev/null; then
2333 if test 0"$ld_date" -lt 20020404; then
2334 if test -n "$ld_date"; then
2335 # If there was date string, but was earlier than 2002-04-04, fail
2337 elif test -z "$ld_vers"; then
2338 # If there was no date string nor ld version number, something is wrong
2341 test -z "$ld_vers_patch" && ld_vers_patch=0
2342 if test "$ld_vers_major" -lt 2; then
2344 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2345 gcc_cv_ld_hidden="no"
2346 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2354 # Darwin ld has some visibility support.
2355 gcc_cv_ld_hidden=yes
2357 hppa64*-*-hpux* | ia64*-*-hpux*)
2358 gcc_cv_ld_hidden=yes
2361 # .hidden support was backported to Solaris 8, starting with ld
2363 if test "$ld_vers_minor" -ge 276; then
2364 gcc_cv_ld_hidden=yes
2369 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2370 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2371 # .symbolic was only added in Solaris 9 12/02.
2372 gcc_cv_ld_hidden=yes
2380 libgcc_visibility=no
2381 AC_SUBST(libgcc_visibility)
2382 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2383 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2384 libgcc_visibility=yes
2385 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2386 [Define if your assembler and linker support .hidden.])
2389 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2390 gcc_cv_ld_ro_rw_mix=unknown
2391 if test $in_tree_ld = yes ; then
2392 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2393 && test $in_tree_ld_is_elf = yes; then
2394 gcc_cv_ld_ro_rw_mix=read-write
2396 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2397 echo '.section myfoosect, "a"' > conftest1.s
2398 echo '.section myfoosect, "aw"' > conftest2.s
2399 echo '.byte 1' >> conftest2.s
2400 echo '.section myfoosect, "a"' > conftest3.s
2401 echo '.byte 0' >> conftest3.s
2402 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2403 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2404 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2405 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2406 conftest2.o conftest3.o > /dev/null 2>&1; then
2407 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2408 | sed -e '/myfoosect/!d' -e N`
2409 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2410 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2411 gcc_cv_ld_ro_rw_mix=read-only
2413 gcc_cv_ld_ro_rw_mix=read-write
2418 rm -f conftest.* conftest[123].*
2421 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2422 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2423 [Define if your linker links a mix of read-only
2424 and read-write sections into a read-write section.])
2426 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2428 gcc_AC_INITFINI_ARRAY
2430 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2431 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2439 [[# GAS versions before 2.11 do not support uleb128,
2440 # despite appearing to.
2441 # ??? There exists an elf-specific test that will crash
2442 # the assembler. Perhaps it's better to figure out whether
2443 # arbitrary sections are supported and try the test.
2444 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2445 if echo "$as_ver" | grep GNU > /dev/null; then
2446 as_vers=`echo $as_ver | sed -n \
2447 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2448 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2449 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2450 if test $as_major -eq 2 && test $as_minor -lt 11
2452 else gcc_cv_as_leb128=yes
2455 [AC_DEFINE(HAVE_AS_LEB128, 1,
2456 [Define if your assembler supports .sleb128 and .uleb128.])])
2458 # Check if we have assembler support for unwind directives.
2459 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2466 .cfi_escape 1, 2, 3, 4, 5
2470 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2471 # read-only and read-write sections, we need to make sure that the
2472 # assembler used emits read-write .eh_frame sections.
2473 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2474 if test "x$gcc_cv_objdump" != x; then
2475 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2476 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2477 gcc_cv_as_cfi_directive=no
2480 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2481 # On Solaris/x86, make sure that GCC and gas agree on using
2482 # read-only .eh_frame sections for 64-bit.
2483 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2484 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2485 sed -e /.eh_frame/!d -e N | \
2486 grep READONLY > /dev/null; then
2487 gcc_cv_as_cfi_directive=yes
2489 gcc_cv_as_cfi_directive=no
2493 gcc_cv_as_cfi_directive=yes
2498 # no objdump, err on the side of caution
2499 gcc_cv_as_cfi_directive=no
2502 gcc_cv_as_cfi_directive=yes
2506 gcc_cv_as_cfi_directive=yes
2509 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2510 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2514 .cfi_adjust_cfa_offset 64
2516 .cfi_adjust_cfa_offset 128
2519 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2520 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2521 gcc_cv_as_cfi_advance_working=yes
2525 # no objdump, err on the side of caution
2526 gcc_cv_as_cfi_advance_working=no
2528 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2529 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2530 [`if test $gcc_cv_as_cfi_directive = yes \
2531 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2532 [Define 0/1 if your assembler supports CFI directives.])
2534 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2535 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2536 gcc_cv_as_cfi_personality_directive, ,,
2539 .cfi_personality 0, symbol
2541 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2542 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2543 then echo 1; else echo 0; fi`],
2544 [Define 0/1 if your assembler supports .cfi_personality.])
2546 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2547 gcc_cv_as_cfi_sections_directive, ,,
2549 .cfi_sections .debug_frame, .eh_frame
2553 win32 | pe | cygwin* | mingw32* | uwin*)
2554 # Need to check that we generated the correct relocation for the
2555 # .debug_frame section. This was fixed for binutils 2.21.
2556 gcc_cv_as_cfi_sections_directive=no
2557 if test "x$gcc_cv_objdump" != x; then
2558 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2559 grep secrel > /dev/null; then
2560 gcc_cv_as_cfi_sections_directive=yes
2565 gcc_cv_as_cfi_sections_directive=yes
2568 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2569 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2570 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2571 then echo 1; else echo 0; fi`],
2572 [Define 0/1 if your assembler supports .cfi_sections.])
2574 # GAS versions up to and including 2.11.0 may mis-optimize
2576 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2584 .section .eh_frame,"aw",@progbits
2586 .4byte .LECIE1-.LSCIE1
2600 .4byte .LEFDE1-.LASFDE1
2602 .4byte .LASFDE1-__FRAME_BEGIN__
2610 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2611 cat > conftest.lit <<EOF
2612 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2613 0010 01000000 12000000 18000000 00000000 ................
2614 0020 08000000 04080000 0044 .........D @&t@
2616 cat > conftest.big <<EOF
2617 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2618 0010 00000001 00000012 00000018 00000000 ................
2619 0020 00000008 04000000 0844 .........D @&t@
2621 # If the assembler didn't choke, and we can objdump,
2622 # and we got the correct data, then succeed.
2623 # The text in the here-document typically retains its unix-style line
2624 # endings, while the output of objdump will use host line endings.
2625 # Therefore, use diff -b for the comparisons.
2626 if test x$gcc_cv_objdump != x \
2627 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2628 | tail -3 > conftest.got \
2629 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2630 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2632 gcc_cv_as_eh_frame=yes
2633 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2634 gcc_cv_as_eh_frame=buggy
2636 # Uh oh, what do we do now?
2637 gcc_cv_as_eh_frame=no
2640 if test $gcc_cv_as_eh_frame = buggy; then
2641 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2642 [Define if your assembler mis-optimizes .eh_frame data.])
2645 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2646 [elf,2,12,0], [--fatal-warnings],
2647 [.section .rodata.str, "aMS", @progbits, 1])
2648 if test $gcc_cv_as_shf_merge = no; then
2649 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2650 [elf,2,12,0], [--fatal-warnings],
2651 [.section .rodata.str, "aMS", %progbits, 1])
2653 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2654 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2655 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2657 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2658 gcc_cv_as_comdat_group,
2659 [elf,2,16,0], [--fatal-warnings],
2660 [.section .text,"axG",@progbits,.foo,comdat])
2661 if test $gcc_cv_as_comdat_group = yes; then
2662 gcc_cv_as_comdat_group_percent=no
2663 gcc_cv_as_comdat_group_group=no
2665 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2666 gcc_cv_as_comdat_group_percent,
2667 [elf,2,16,0], [--fatal-warnings],
2668 [.section .text,"axG",%progbits,.foo,comdat])
2669 if test $gcc_cv_as_comdat_group_percent = yes; then
2670 gcc_cv_as_comdat_group_group=no
2673 # Sun as uses a completely different syntax.
2678 .group foo,".text%foo",#comdat
2679 .section ".text%foo", #alloc,#execinstr,#progbits
2684 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2686 .group foo,.text%foo,#comdat
2687 .section .text%foo, "ax", @progbits
2693 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2694 gcc_cv_as_comdat_group_group,
2700 if test x"$ld_is_gold" = xyes; then
2702 elif test $in_tree_ld = yes ; then
2704 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2705 && test $in_tree_ld_is_elf = yes; then
2708 elif echo "$ld_ver" | grep GNU > /dev/null; then
2710 if test 0"$ld_date" -lt 20050308; then
2711 if test -n "$ld_date"; then
2712 # If there was date string, but was earlier than 2005-03-08, fail
2714 elif test "$ld_vers_major" -lt 2; then
2716 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2723 *-*-solaris2.1[1-9]*)
2725 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2726 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2729 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2730 # least ld version 1.2267.
2731 if test "$ld_vers_major" -gt 1; then
2733 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2735 elif test "$ld_vers_minor" -ge 2267; then
2740 # Assume linkers other than GNU ld don't support COMDAT group.
2746 # Allow overriding the automatic COMDAT group tests above.
2747 AC_ARG_ENABLE(comdat,
2748 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2749 [comdat_group="$enable_comdat"])
2750 if test $comdat_group = no; then
2751 gcc_cv_as_comdat_group=no
2752 gcc_cv_as_comdat_group_percent=no
2753 gcc_cv_as_comdat_group_group=no
2755 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2756 [`if test $gcc_cv_as_comdat_group = yes \
2757 || test $gcc_cv_as_comdat_group_percent = yes \
2758 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2759 [Define 0/1 if your assembler and linker support COMDAT groups.])
2761 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2762 gcc_cv_as_discriminator,
2766 .loc 1 1 0 discriminator 1],,
2767 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2768 [Define if your assembler supports the .loc discriminator sub-directive.])])
2770 # Thread-local storage - the check is heavily parameterized.
2779 .section ".tdata","awT",@progbits
2782 ldq $27,__tls_get_addr($29) !literal!1
2783 lda $16,foo($29) !tlsgd!1
2784 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2785 ldq $27,__tls_get_addr($29) !literal!2
2786 lda $16,foo($29) !tlsldm!2
2787 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2788 ldq $1,foo($29) !gotdtprel
2789 ldah $2,foo($29) !dtprelhi
2790 lda $3,foo($2) !dtprello
2791 lda $4,foo($29) !dtprel
2792 ldq $1,foo($29) !gottprel
2793 ldah $2,foo($29) !tprelhi
2794 lda $3,foo($2) !tprello
2795 lda $4,foo($29) !tprel'
2798 tls_as_opt=--fatal-warnings
2800 cris-*-*|crisv32-*-*)
2802 .section ".tdata","awT",@progbits
2809 tls_as_opt=--fatal-warnings
2813 .section ".tdata","awT",@progbits
2825 .section ".tdata","awT",@progbits
2829 addil LT%foo-$tls_gdidx$,gp
2830 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2833 addil LT%foo-$tls_ldidx$,gp
2835 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2836 addil LR%foo-$tls_dtpoff$,%ret0
2837 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2839 addil LT%foo-$tls_ieoff$,gp
2840 ldw RT%foo-$tls_ieoff$(%r1),%t2
2843 addil LR%foo-$tls_leoff$,%t1
2844 ldo RR%foo-$tls_leoff$(%r1),%t2'
2847 tls_as_opt=--fatal-warnings
2851 .section ".tdata","awT",%progbits
2862 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2864 i[34567]86-*-solaris2.*)
2866 tga_func=___tls_get_addr
2868 x86_64-*-solaris2.1[0-9]*)
2870 tga_func=__tls_get_addr
2876 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2878 .section .tdata,"awt",@progbits'
2882 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2883 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2887 .section ".tdata","awT",@progbits'
2890 tls_as_opt="--fatal-warnings"
2892 conftest_s="$conftest_s
2896 leal foo@tlsgd(,%ebx,1), %eax
2897 leal foo@tlsldm(%ebx), %eax
2898 leal foo@dtpoff(%eax), %edx
2899 movl foo@gottpoff(%ebx), %eax
2900 subl foo@gottpoff(%ebx), %eax
2901 addl foo@gotntpoff(%ebx), %eax
2902 movl foo@indntpoff, %eax
2903 movl \$foo@tpoff, %eax
2904 subl \$foo@tpoff, %eax
2905 leal foo@ntpoff(%ecx), %eax"
2909 .section ".tdata","awT",@progbits
2913 leaq foo@TLSGD(%rip), %rdi
2914 leaq foo@TLSLD(%rip), %rdi
2915 leaq foo@DTPOFF(%rax), %rdx
2916 movq foo@GOTTPOFF(%rip), %rax
2917 movq $foo@TPOFF, %rax'
2920 tls_as_opt=--fatal-warnings
2924 .section ".tdata","awT",@progbits
2927 addl r16 = @ltoff(@dtpmod(foo#)), gp
2928 addl r17 = @ltoff(@dtprel(foo#)), gp
2929 addl r18 = @ltoff(@tprel(foo#)), gp
2930 addl r19 = @dtprel(foo#), gp
2931 adds r21 = @dtprel(foo#), r13
2932 movl r23 = @dtprel(foo#)
2933 addl r20 = @tprel(foo#), gp
2934 adds r22 = @tprel(foo#), r13
2935 movl r24 = @tprel(foo#)'
2938 tls_as_opt=--fatal-warnings
2942 .section .tdata,"awT",@progbits
2946 addiu $4, $28, %tlsgd(x)
2947 addiu $4, $28, %tlsldm(x)
2948 lui $4, %dtprel_hi(x)
2949 addiu $4, $4, %dtprel_lo(x)
2950 lw $4, %gottprel(x)($28)
2951 lui $4, %tprel_hi(x)
2952 addiu $4, $4, %tprel_lo(x)'
2955 tls_as_opt='-32 --fatal-warnings'
2959 .section .tdata,"awT",@progbits
2964 move.l x@TLSGD(%a5),%a0
2965 move.l x@TLSLDM(%a5),%a0
2966 move.l x@TLSLDO(%a5),%a0
2967 move.l x@TLSIE(%a5),%a0
2968 move.l x@TLSLE(%a5),%a0'
2971 tls_as_opt='--fatal-warnings'
2975 .section ".tdata","awT",@progbits
2983 addi 3,31,ld0@got@tlsgd
2985 addi 3,31,x1@got@tlsld
2988 addis 9,3,x2@dtprel@ha
2989 addi 9,9,x2@dtprel@l
2990 lwz 9,x3@got@tprel(31)
2993 addis 9,2,x2@tprel@ha
2994 addi 9,9,x2@tprel@l'
2997 tls_as_opt="-a32 --fatal-warnings"
3001 .section ".tdata","awT",@progbits
3009 addi 3,2,ld0@got@tlsgd
3015 addi 3,2,x1@got@tlsld
3021 addis 9,3,x2@dtprel@ha
3022 addi 9,9,x2@dtprel@l
3025 ld 9,x3@got@dtprel(2)
3031 tls_as_opt="-a64 --fatal-warnings"
3035 .section ".tdata","awT",@progbits
3044 l %r1,foo@GOTNTPOFF(%r12)
3045 l %r1,0(%r1):tls_load:foo
3046 bas %r14,0(%r1,%r13):tls_gdcall:foo
3047 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3050 tls_as_opt="-m31 --fatal-warnings"
3054 .section ".tdata","awT",@progbits
3062 lg %r1,foo@GOTNTPOFF(%r12)
3063 larl %r1,foo@INDNTPOFF
3064 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3065 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3068 tls_as_opt="-m64 -Aesame --fatal-warnings"
3070 sh-*-* | sh[34]-*-*)
3072 .section ".tdata","awT",@progbits
3082 tls_as_opt=--fatal-warnings
3086 sparc*-sun-solaris2.*)
3088 tga_func=__tls_get_addr
3094 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3096 .section ".tdata",#alloc,#write,#tls'
3101 .section ".tdata","awT",@progbits'
3104 tls_as_opt="-32 --fatal-warnings"
3106 conftest_s="$conftest_s
3109 sethi %tgd_hi22(foo), %o0
3110 add %o0, %tgd_lo10(foo), %o1
3111 add %l7, %o1, %o0, %tgd_add(foo)
3112 call __tls_get_addr, %tgd_call(foo)
3113 sethi %tldm_hi22(foo), %l1
3114 add %l1, %tldm_lo10(foo), %l2
3115 add %l7, %l2, %o0, %tldm_add(foo)
3116 call __tls_get_addr, %tldm_call(foo)
3117 sethi %tldo_hix22(foo), %l3
3118 xor %l3, %tldo_lox10(foo), %l4
3119 add %o0, %l4, %l5, %tldo_add(foo)
3120 sethi %tie_hi22(foo), %o3
3121 add %o3, %tie_lo10(foo), %o3
3122 ld [%l7 + %o3], %o2, %tie_ld(foo)
3123 add %g7, %o2, %o4, %tie_add(foo)
3124 sethi %tle_hix22(foo), %l1
3125 xor %l1, %tle_lox10(foo), %o5
3126 ld [%g7 + %o5], %o1"
3130 .section ".tdata","awT",@progbits
3133 movi a8, foo@TLSFUNC
3134 movi a10, foo@TLSARG
3135 callx8.tls a8, foo@TLSCALL'
3142 if test "x$enable_tls" = xno ; then
3143 : # TLS explicitly disabled.
3144 elif test "x$enable_tls" = xyes ; then
3145 set_have_as_tls=yes # TLS explicitly enabled.
3146 elif test -z "$tls_first_major"; then
3147 : # If we don't have a check, assume no support.
3149 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3150 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3151 [set_have_as_tls=yes])
3155 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3156 # with TLS support are in use, native TLS cannot work.
3160 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3161 # gld with TLS support are in use, native TLS cannot work.
3164 # TLS was introduced in the Solaris 9 FCS release and backported to
3165 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3166 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3167 # ld and GCC don't support any longer.
3169 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3171 # Check ld and ld.so.1 TLS support.
3172 if echo "$ld_ver" | grep GNU > /dev/null; then
3173 # Assume all interesting versions of GNU ld have TLS support.
3174 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3178 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3180 min_tls_ld_vers_minor=280
3182 # Solaris 8/SPARC ld has TLS support since version 1.272.
3183 sparc*-*-solaris2.8)
3184 min_tls_ld_vers_minor=272
3186 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3188 min_tls_ld_vers_minor=374
3190 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3191 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3192 min_tls_ld_vers_minor=343
3195 if test "$ld_vers_major" -gt 1 || \
3196 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3202 AC_MSG_RESULT($ld_tls_support)
3205 save_LDFLAGS="$LDFLAGS"
3209 AC_MSG_CHECKING(alternate thread library)
3211 # TLS support was backported to Solaris 8 patches, but only lives in
3212 # the alternate thread library which became the default in Solaris 9.
3213 # We want to always use that, irrespective of TLS support.
3215 # Take multilib subdir into account. There's no spec to handle
3216 # this. The 64 symlink exists since Solaris 8.
3217 lwp_dir=/usr/lib/lwp
3218 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3219 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3226 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3227 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3228 [Define to the linker flags to use for -pthread.])
3229 AC_MSG_RESULT($lwp_dir)
3231 AC_MSG_CHECKING(library containing $tga_func)
3232 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3233 # (32-bit x86) only lived in libthread, so check for that. Keep
3234 # set_have_as_tls if found, disable if not.
3235 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3236 # Clear LIBS if we cannot support TLS.
3237 if test $set_have_as_tls = no; then
3240 # Always define LIB_TLS_SPEC, even without TLS support.
3241 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3242 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3243 AC_MSG_RESULT($LIBS)
3246 LDFLAGS="$save_LDFLAGS"
3249 if test $set_have_as_tls = yes ; then
3250 AC_DEFINE(HAVE_AS_TLS, 1,
3251 [Define if your assembler and linker support thread-local storage.])
3254 # Target-specific assembler checks.
3256 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3257 gcc_cv_ld_static_dynamic=no
3258 gcc_cv_ld_static_option='-Bstatic'
3259 gcc_cv_ld_dynamic_option='-Bdynamic'
3260 if test $in_tree_ld = yes ; then
3261 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3262 gcc_cv_ld_static_dynamic=yes
3264 elif test x$gcc_cv_ld != x; then
3265 # Check if linker supports -Bstatic/-Bdynamic option
3266 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3267 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3268 gcc_cv_ld_static_dynamic=yes
3271 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3273 gcc_cv_ld_static_dynamic=yes
3274 gcc_cv_ld_static_option="-noso"
3275 gcc_cv_ld_dynamic_option="-so_archive"
3277 # HP-UX ld uses -a flags to select between shared and archive.
3279 if test x"$gnu_ld" = xno; then
3280 gcc_cv_ld_static_dynamic=yes
3281 gcc_cv_ld_static_option="-aarchive_shared"
3282 gcc_cv_ld_dynamic_option="-adefault"
3285 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3287 gcc_cv_ld_static_dynamic=yes
3289 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3291 gcc_cv_ld_static_dynamic=yes
3296 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3297 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3298 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3299 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3300 [Define to the linker option to disable use of shared objects.])
3301 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3302 [Define to the linker option to enable use of shared objects.])
3304 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3306 if test x"$demangler_in_ld" = xyes; then
3307 AC_MSG_CHECKING(linker --demangle support)
3308 gcc_cv_ld_demangle=no
3309 if test $in_tree_ld = yes; then
3310 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3311 gcc_cv_ld_demangle=yes
3313 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3314 # Check if the GNU linker supports --demangle option
3315 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3316 gcc_cv_ld_demangle=yes
3319 if test x"$gcc_cv_ld_demangle" = xyes; then
3320 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3321 [Define if your linker supports --demangle option.])
3323 AC_MSG_RESULT($gcc_cv_ld_demangle)
3326 AC_MSG_CHECKING(linker plugin support)
3328 if test -f liblto_plugin.la; then
3329 save_ld_ver="$ld_ver"
3330 save_ld_vers_major="$ld_vers_major"
3331 save_ld_vers_minor="$ld_vers_minor"
3332 save_ld_is_gold="$ld_is_gold"
3336 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3338 # FIXME: ld_is_gold?
3339 ld_vers_major="$gcc_cv_gld_major_version"
3340 ld_vers_minor="$gcc_cv_gld_minor_version"
3342 # Determine plugin linker version.
3343 # FIXME: Partial duplicate from above, generalize.
3345 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3346 if echo "$ld_ver" | grep GNU > /dev/null; then
3347 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3349 ld_vers=`echo $ld_ver | sed -n \
3350 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3352 ld_vers=`echo $ld_ver | sed -n \
3353 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3355 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3356 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3361 # Determine plugin support.
3362 if echo "$ld_ver" | grep GNU > /dev/null; then
3363 # Require GNU ld or gold 2.21+ for plugin support by default.
3364 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3366 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3367 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3372 ld_ver="$save_ld_ver"
3373 ld_vers_major="$save_ld_vers_major"
3374 ld_vers_minor="$save_ld_vers_minor"
3375 ld_is_gold="$save_ld_is_gold"
3377 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3378 [Define to the level of your linker's plugin support.])
3379 AC_MSG_RESULT($gcc_cv_lto_plugin)
3382 # All TARGET_ABI_OSF targets.
3383 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3384 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3385 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3388 extbl $3, $2, $3 !lituse_bytoff!1
3389 ldq $2, a($29) !literal!1
3390 ldq $4, b($29) !literal!2
3391 ldq_u $3, 0($2) !lituse_base!1
3392 ldq $27, f($29) !literal!5
3393 jsr $26, ($27), f !lituse_jsr!5
3394 ldah $29, 0($26) !gpdisp!3
3395 lda $0, c($29) !gprel
3396 ldah $1, d($29) !gprelhigh
3397 lda $1, d($1) !gprellow
3398 lda $29, 0($29) !gpdisp!3],,
3399 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3400 [Define if your assembler supports explicit relocations.])])
3401 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3402 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3405 ldq $27, a($29) !literal!1
3406 jsr $26, ($27), a !lituse_jsrdirect!1],,
3407 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3408 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3412 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3413 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3414 [-no-mul-bug-abort], [.text],,
3415 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3416 [Define if your assembler supports the -no-mul-bug-abort option.])])
3420 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3421 [.register %g2, #scratch],,
3422 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3423 [Define if your assembler supports .register.])])
3425 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3427 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3428 [Define if your assembler supports -relax option.])])
3430 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3431 gcc_cv_as_sparc_gotdata_op,,
3438 sethi %gdop_hix22(foo), %g1
3439 xor %g1, %gdop_lox10(foo), %g1
3440 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3441 [if test x$gcc_cv_ld != x \
3442 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3443 if test x$gcc_cv_objdump != x; then
3444 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3445 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3446 gcc_cv_as_sparc_gotdata_op=no
3448 gcc_cv_as_sparc_gotdata_op=yes
3453 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3454 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3456 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3457 gcc_cv_as_sparc_ua_pcrel,,
3465 .uaword %r_disp32(foo)],
3466 [if test x$gcc_cv_ld != x \
3467 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3468 gcc_cv_as_sparc_ua_pcrel=yes
3471 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3472 [Define if your assembler and linker support unaligned PC relative relocs.])
3474 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3475 gcc_cv_as_sparc_ua_pcrel_hidden,,
3480 .uaword %r_disp32(foo)
3481 .byte 0x32, 0x33, 0x34
3486 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3487 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3488 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3489 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3490 if $gcc_cv_objdump -R conftest 2> /dev/null \
3491 | grep 'DISP32' > /dev/null 2>&1; then
3494 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3498 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3499 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3500 ]) # unaligned pcrel relocs
3502 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3503 gcc_cv_as_sparc_offsetable_lo10,,
3506 or %g1, %lo(ab) + 12, %g1
3507 or %g1, %lo(ab + 12), %g1],
3508 [if test x$gcc_cv_objdump != x \
3509 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3510 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3511 gcc_cv_as_sparc_offsetable_lo10=yes
3513 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3514 [Define if your assembler supports offsetable %lo().])])
3516 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3517 gcc_cv_as_sparc_fmaf,,
3520 .register %g2, #scratch
3521 .register %g3, #scratch
3523 fmaddd %f0, %f2, %f4, %f6
3524 addxccc %g1, %g2, %g3
3525 fsrl32 %f2, %f4, %f8
3526 fnaddd %f10, %f12, %f14],,
3527 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3528 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3532 i[34567]86-*-* | x86_64-*-*)
3536 # Full C++ conformance when using a shared libstdc++-v3 requires some
3537 # support from the Cygwin DLL, which in more recent versions exports
3538 # wrappers to aid in interposing and redirecting operators new, delete,
3539 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3540 # are configuring for a version of Cygwin that exports the wrappers.
3541 if test x$host = x$target; then
3542 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3544 # Can't check presence of libc functions during cross-compile, so
3545 # we just have to assume we're building for an up-to-date target.
3546 gcc_ac_cygwin_dll_wrappers=yes
3548 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3549 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3550 [Define if you want to generate code by default that assumes that the
3551 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3554 cygwin* | pe | mingw32* | interix*)
3555 # Recent binutils allows the three-operand form of ".comm" on PE. This
3556 # definition is used unconditionally to initialise the default state of
3557 # the target option variable that governs usage of the feature.
3558 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3559 [2,19,52],,[.comm foo,1,32])
3560 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3561 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3562 [Define if your assembler supports specifying the alignment
3563 of objects allocated using the GAS .comm command.])
3564 # Used for DWARF 2 in PE
3565 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3566 gcc_cv_as_ix86_pe_secrel32,
3572 [if test x$gcc_cv_ld != x \
3573 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3574 gcc_cv_as_ix86_pe_secrel32=yes
3577 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3578 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3579 # Test if the assembler supports the extended form of the .section
3580 # directive that specifies section alignment. LTO support uses this,
3581 # but normally only after installation, so we warn but don't fail the
3582 # configure if LTO is enabled but the assembler does not support it.
3583 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3584 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3585 if test x$gcc_cv_as_section_has_align != xyes; then
3586 case ",$enable_languages," in
3588 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3592 # Test if the assembler supports the section flag 'e' for specifying
3593 # an excluded section.
3594 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3598 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3599 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3600 [Define if your assembler supports specifying the section flag e.])
3604 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3605 gcc_cv_as_ix86_filds,,,
3606 [filds mem; fists mem],,
3607 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3608 [Define if your assembler uses filds and fists mnemonics.])])
3610 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3611 gcc_cv_as_ix86_fildq,,,
3612 [fildq mem; fistpq mem],,
3613 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3614 [Define if your assembler uses fildq and fistq mnemonics.])])
3616 gcc_GAS_CHECK_FEATURE([cmov syntax],
3617 gcc_cv_as_ix86_cmov_sun_syntax,,,
3618 [cmovl.l %edx, %eax],,
3619 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3620 [Define if your assembler supports the Sun syntax for cmov.])])
3622 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3623 gcc_cv_as_ix86_ffreep,,,
3625 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3626 [Define if your assembler supports the ffreep mnemonic.])])
3628 gcc_GAS_CHECK_FEATURE([.quad directive],
3629 gcc_cv_as_ix86_quad,,,
3631 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3632 [Define if your assembler supports the .quad directive.])])
3634 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3635 gcc_cv_as_ix86_sahf,,,
3638 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3639 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3641 gcc_GAS_CHECK_FEATURE([swap suffix],
3642 gcc_cv_as_ix86_swap,,,
3643 [movl.s %esp, %ebp],,
3644 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3645 [Define if your assembler supports the swap suffix.])])
3647 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3648 gcc_cv_as_ix86_diff_sect_delta,,,
3656 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3657 [Define if your assembler supports the subtraction of symbols in different sections.])])
3659 # These two are used unconditionally by i386.[ch]; it is to be defined
3660 # to 1 if the feature is present, 0 otherwise.
3661 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3662 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3668 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3669 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3670 [Define true if the assembler supports '.long foo@GOTOFF'.])
3672 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3673 gcc_cv_as_ix86_rep_lock_prefix,,,
3675 lock addl %edi, (%eax,%esi)
3676 lock orl $0, (%esp)],,
3677 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3678 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3680 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3681 gcc_cv_as_ix86_tlsgdplt,,,
3682 [call tls_gd@tlsgdplt],
3683 [if test x$gcc_cv_ld != x \
3684 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3685 gcc_cv_as_ix86_tlsgdplt=yes
3688 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3689 [Define if your assembler and linker support @tlsgdplt.])])
3691 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3692 gcc_cv_as_ix86_tlsldmplt,,,
3693 [call tls_ld@tlsldmplt],
3694 [if test x$gcc_cv_ld != x \
3695 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3696 gcc_cv_as_ix86_tlsldmplt=yes
3699 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3700 [Define if your assembler and linker support @tlsldmplt.])])
3705 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3706 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3708 addl r15 = @ltoffx(x#), gp
3710 ld8.mov r16 = [[r15]], x#],,
3711 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3712 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3718 *-*-aix*) conftest_s=' .machine "pwr5"
3722 gcc_GAS_CHECK_FEATURE([.machine directive support],
3723 gcc_cv_as_machine_directive,,,
3724 [ .machine ppc7400])
3725 if test x$gcc_cv_as_machine_directive != xyes; then
3726 echo "*** This target requires an assembler supporting \".machine\"" >&2
3727 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3728 test x$build = x$target && exit 1
3732 *) conftest_s=' .machine power4
3737 gcc_GAS_CHECK_FEATURE([mfcr field support],
3738 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3740 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3741 [Define if your assembler supports mfcr field.])])
3744 *-*-aix*) conftest_s=' .machine "pwr5"
3747 *) conftest_s=' .machine power5
3752 gcc_GAS_CHECK_FEATURE([popcntb support],
3753 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3755 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3756 [Define if your assembler supports popcntb field.])])
3759 *-*-aix*) conftest_s=' .machine "pwr5x"
3762 *) conftest_s=' .machine power5
3767 gcc_GAS_CHECK_FEATURE([fp round support],
3768 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3770 [AC_DEFINE(HAVE_AS_FPRND, 1,
3771 [Define if your assembler supports fprnd.])])
3774 *-*-aix*) conftest_s=' .machine "pwr6"
3777 *) conftest_s=' .machine power6
3782 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3783 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3785 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3786 [Define if your assembler supports mffgpr and mftgpr.])])
3789 *-*-aix*) conftest_s=' .csect .text[[PR]]
3791 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3795 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3796 *) conftest_s=' .text
3798 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3801 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3802 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3804 [AC_DEFINE(HAVE_AS_REL16, 1,
3805 [Define if your assembler supports R_PPC_REL16 relocs.])])
3808 *-*-aix*) conftest_s=' .machine "pwr6"
3811 *) conftest_s=' .machine power6
3816 gcc_GAS_CHECK_FEATURE([compare bytes support],
3817 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3819 [AC_DEFINE(HAVE_AS_CMPB, 1,
3820 [Define if your assembler supports cmpb.])])
3823 *-*-aix*) conftest_s=' .machine "pwr6"
3826 *) conftest_s=' .machine power6
3831 gcc_GAS_CHECK_FEATURE([decimal float support],
3832 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3834 [AC_DEFINE(HAVE_AS_DFP, 1,
3835 [Define if your assembler supports DFP instructions.])])
3838 *-*-aix*) conftest_s=' .machine "pwr7"
3841 *) conftest_s=' .machine power7
3846 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3847 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3849 [AC_DEFINE(HAVE_AS_VSX, 1,
3850 [Define if your assembler supports VSX instructions.])])
3853 *-*-aix*) conftest_s=' .machine "pwr7"
3856 *) conftest_s=' .machine power7
3861 gcc_GAS_CHECK_FEATURE([popcntd support],
3862 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3864 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3865 [Define if your assembler supports POPCNTD instructions.])])
3868 *-*-aix*) conftest_s=' .csect .text[[PR]]
3870 *) conftest_s=' .text
3874 gcc_GAS_CHECK_FEATURE([lwsync support],
3875 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3877 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3878 [Define if your assembler supports LWSYNC instructions.])])
3881 *-*-aix*) conftest_s=' .machine "476"
3884 *) conftest_s=' .machine "476"
3889 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3890 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3892 [AC_DEFINE(HAVE_AS_DCI, 1,
3893 [Define if your assembler supports the DCI/ICI instructions.])])
3895 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3896 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3897 [.gnu_attribute 4,1],,
3898 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3899 [Define if your assembler supports .gnu_attribute.])])
3901 gcc_GAS_CHECK_FEATURE([tls marker support],
3902 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3903 [ bl __tls_get_addr(x@tlsgd)],,
3904 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3905 [Define if your assembler supports arg info for __tls_get_addr.])])
3909 gcc_GAS_CHECK_FEATURE([.ref support],
3910 gcc_cv_as_aix_ref, [2.21.0],,
3911 [ .csect stuff[[rw]]
3917 [AC_DEFINE(HAVE_AS_REF, 1,
3918 [Define if your assembler supports .ref])])
3924 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3925 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3926 [ lw $4,%gp_rel(foo)($4)],,
3927 [if test x$target_cpu_default = x
3928 then target_cpu_default=MASK_EXPLICIT_RELOCS
3929 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3931 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3932 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3933 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3934 [Define if the assembler understands -mno-shared.])])
3936 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3937 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3938 [.gnu_attribute 4,1],,
3939 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3940 [Define if your assembler supports .gnu_attribute.])])
3942 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3943 gcc_cv_as_mips_dtprelword, [2,18,0],,
3944 [.section .tdata,"awT",@progbits
3948 .dtprelword x+0x8000],,
3949 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3950 [Define if your assembler supports .dtprelword.])])
3952 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3953 gcc_cv_as_mips_dspr1_mult,,,
3963 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3964 [Define if your assembler supports DSPR1 mult.])])
3966 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3967 gcc_cv_as_ld_jalr_reloc=no
3968 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3969 if test $in_tree_ld = yes ; then
3970 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3971 && test $in_tree_ld_is_elf = yes; then
3972 gcc_cv_as_ld_jalr_reloc=yes
3974 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3975 echo ' .ent x' > conftest.s
3976 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3977 echo ' ld $25,%call16(y)($28)' >> conftest.s
3978 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3979 echo '1: jalr $25' >> conftest.s
3980 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3981 echo '1: jalr $25' >> conftest.s
3982 echo ' .end x' >> conftest.s
3983 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3984 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3985 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3986 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3987 gcc_cv_as_ld_jalr_reloc=yes
3993 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3994 if test x$target_cpu_default = x; then
3995 target_cpu_default=MASK_RELAX_PIC_CALLS
3997 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4000 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4002 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4003 [gcc_cv_ld_mips_personality_relaxation],
4004 [gcc_cv_ld_mips_personality_relaxation=no
4005 if test $in_tree_ld = yes ; then
4006 if test "$gcc_cv_gld_major_version" -eq 2 \
4007 -a "$gcc_cv_gld_minor_version" -ge 21 \
4008 -o "$gcc_cv_gld_major_version" -gt 2; then
4009 gcc_cv_ld_mips_personality_relaxation=yes
4011 elif test x$gcc_cv_as != x \
4012 -a x$gcc_cv_ld != x \
4013 -a x$gcc_cv_readelf != x ; then
4014 cat > conftest.s <<EOF
4016 .cfi_personality 0x80,indirect_ptr
4023 .section .data,"aw",@progbits
4027 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4028 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4029 if $gcc_cv_readelf -d conftest 2>&1 \
4030 | grep TEXTREL > /dev/null 2>&1; then
4032 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4033 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4036 gcc_cv_ld_mips_personality_relaxation=yes
4040 rm -f conftest.s conftest.o conftest])
4041 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4042 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4043 [Define if your linker can relax absolute .eh_frame personality
4044 pointers into PC-relative form.])
4049 # Mips and HP-UX need the GNU assembler.
4050 # Linux on IA64 might be able to use the Intel assembler.
4053 mips*-*-* | *-*-hpux* )
4054 if test x$gas_flag = xyes \
4055 || test x"$host" != x"$build" \
4056 || test ! -x "$gcc_cv_as" \
4057 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4060 echo "*** This configuration requires the GNU assembler" >&2
4066 # ??? Not all targets support dwarf2 debug_line, even within a version
4067 # of gas. Moreover, we need to emit a valid instruction to trigger any
4068 # info to the output file. So, as supported targets are added to gas 2.11,
4069 # add some instruction here to (also) show we expect this might work.
4070 # ??? Once 2.11 is released, probably need to add first known working
4071 # version to the per-target configury.
4073 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4074 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
4084 if test x"$insn" != x; then
4086 .file 1 \"conftest.s\"
4089 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4090 gcc_cv_as_dwarf2_debug_line,
4091 [elf,2,11,0],, [$conftest_s],
4092 [if test x$gcc_cv_objdump != x \
4093 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4094 | grep debug_line > /dev/null 2>&1; then
4095 gcc_cv_as_dwarf2_debug_line=yes
4098 # The .debug_line file table must be in the exact order that
4099 # we specified the files, since these indices are also used
4100 # by DW_AT_decl_file. Approximate this test by testing if
4101 # the assembler bitches if the same index is assigned twice.
4102 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4103 gcc_cv_as_dwarf2_file_buggy,,,
4107 if test $gcc_cv_as_dwarf2_debug_line = yes \
4108 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4109 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4110 [Define if your assembler supports dwarf2 .file/.loc directives,
4111 and preserves file table indices exactly as given.])
4114 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4115 gcc_cv_as_gdwarf2_flag,
4116 [elf,2,11,0], [--gdwarf2], [$insn],,
4117 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4118 [Define if your assembler supports the --gdwarf2 option.])])
4120 gcc_GAS_CHECK_FEATURE([--gstabs option],
4121 gcc_cv_as_gstabs_flag,
4122 [elf,2,11,0], [--gstabs], [$insn],
4123 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4124 # and warns about it, but still exits successfully. So check for
4126 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4128 else gcc_cv_as_gstabs_flag=yes
4130 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4131 [Define if your assembler supports the --gstabs option.])])
4133 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4134 gcc_cv_as_debug_prefix_map_flag,
4135 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4136 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4137 [Define if your assembler supports the --debug-prefix-map option.])])
4140 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4143 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4144 [Define if your assembler supports .lcomm with an alignment field.])])
4146 AC_ARG_ENABLE(gnu-unique-object,
4147 [AS_HELP_STRING([--enable-gnu-unique-object],
4148 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4149 [case $enable_gnu_unique_object in
4151 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4152 Valid choices are 'yes' and 'no'.]) ;;
4154 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4156 [.type foo, @gnu_unique_object],,
4157 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4158 [[if test x$host = x$build -a x$host = x$target &&
4159 ldd --version 2>/dev/null &&
4160 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4161 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4162 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4163 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4164 if test "$glibcnum" -ge 2011 ; then
4165 enable_gnu_unique_object=yes
4168 if test x$enable_gnu_unique_object = xyes; then
4169 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4170 [Define if your assembler supports @gnu_unique_object.])
4173 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4174 [gcc_cv_as_line_zero],
4175 [gcc_cv_as_line_zero=no
4176 if test $in_tree_gas = yes; then
4177 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4178 elif test "x$gcc_cv_as" != x; then
4179 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4180 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4181 test "x`cat conftest.out`" = x
4183 gcc_cv_as_line_zero=yes
4185 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4186 cat conftest.s >&AS_MESSAGE_LOG_FD
4187 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4188 cat conftest.out >&AS_MESSAGE_LOG_FD
4190 rm -f conftest.o conftest.s conftest.out
4192 if test "x$gcc_cv_as_line_zero" = xyes; then
4193 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4194 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4197 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4198 gcc_cv_ld_eh_frame_hdr=no
4199 if test $in_tree_ld = yes ; then
4200 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4201 && test $in_tree_ld_is_elf = yes; then
4202 gcc_cv_ld_eh_frame_hdr=yes
4204 elif test x$gcc_cv_ld != x; then
4205 if echo "$ld_ver" | grep GNU > /dev/null; then
4206 # Check if linker supports --eh-frame-hdr option
4207 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4208 gcc_cv_ld_eh_frame_hdr=yes
4213 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4214 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4215 gcc_cv_ld_eh_frame_hdr=yes
4221 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4222 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4223 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4224 [Define if your linker supports .eh_frame_hdr.])
4226 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4228 AC_MSG_CHECKING(linker position independent executable support)
4230 if test $in_tree_ld = yes ; then
4231 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4232 && test $in_tree_ld_is_elf = yes; then
4235 elif test x$gcc_cv_ld != x; then
4236 # Check if linker supports -pie option
4237 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4241 if test x"$gcc_cv_ld_pie" = xyes; then
4242 AC_DEFINE(HAVE_LD_PIE, 1,
4243 [Define if your linker supports -pie option.])
4245 AC_MSG_RESULT($gcc_cv_ld_pie)
4247 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4248 gcc_cv_ld_eh_gc_sections=no
4249 if test $in_tree_ld = yes ; then
4250 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4251 && test $in_tree_ld_is_elf = yes; then
4252 gcc_cv_ld_eh_gc_sections=yes
4254 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4255 cat > conftest.s <<EOF
4258 .type _start, @function
4261 .size _start, .-_start
4262 .section .text.foo,"ax",@progbits
4263 .type foo, @function
4267 .section .gcc_except_table.foo,"a",@progbits
4270 .section .eh_frame,"a",@progbits
4273 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4274 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4275 | grep "gc-sections option ignored" > /dev/null; then
4276 gcc_cv_ld_eh_gc_sections=no
4277 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4278 | grep gcc_except_table > /dev/null; then
4279 gcc_cv_ld_eh_gc_sections=yes
4280 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4281 if test x$gcc_cv_as_comdat_group != xyes; then
4282 gcc_cv_ld_eh_gc_sections=no
4283 cat > conftest.s <<EOF
4286 .type _start, @function
4289 .size _start, .-_start
4290 .section .gnu.linkonce.t.foo,"ax",@progbits
4291 .type foo, @function
4295 .section .gcc_except_table.foo,"a",@progbits
4298 .section .eh_frame,"a",@progbits
4301 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4302 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4303 | grep "gc-sections option ignored" > /dev/null; then
4304 gcc_cv_ld_eh_gc_sections=no
4305 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4306 | grep gcc_except_table > /dev/null; then
4307 gcc_cv_ld_eh_gc_sections=yes
4313 rm -f conftest.s conftest.o conftest
4317 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4318 gcc_cv_ld_eh_gc_sections=no
4321 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4322 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4323 [Define if your linker supports garbage collection of
4324 sections in presence of EH frames.])
4326 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4328 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4329 gcc_cv_ld_eh_gc_sections_bug=no
4330 if test $in_tree_ld = yes ; then
4331 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4332 && test $in_tree_ld_is_elf = yes; then
4333 gcc_cv_ld_eh_gc_sections_bug=yes
4335 elif test x$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
4336 gcc_cv_ld_eh_gc_sections_bug=yes
4337 cat > conftest.s <<EOF
4340 .type _start, @function
4343 .size _start, .-_start
4344 .section .text.startup.foo,"ax",@progbits
4345 .type foo, @function
4349 .section .gcc_except_table.foo,"a",@progbits
4352 .section .eh_frame,"a",@progbits
4355 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4356 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4357 | grep "gc-sections option ignored" > /dev/null; then
4359 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4360 | grep gcc_except_table > /dev/null; then
4361 gcc_cv_ld_eh_gc_sections_bug=no
4364 rm -f conftest.s conftest.o conftest
4366 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4367 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4368 [Define if your linker has buggy garbage collection of
4369 sections support when .text.startup.foo like sections are used.])
4371 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4377 AC_CACHE_CHECK(linker --as-needed support,
4378 gcc_cv_ld_as_needed,
4379 [gcc_cv_ld_as_needed=no
4380 if test $in_tree_ld = yes ; then
4381 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4382 && test $in_tree_ld_is_elf = yes; then
4383 gcc_cv_ld_as_needed=yes
4385 elif test x$gcc_cv_ld != x; then
4386 # Check if linker supports --as-needed and --no-as-needed options
4387 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4388 gcc_cv_ld_as_needed=yes
4392 if test x"$gcc_cv_ld_as_needed" = xyes; then
4393 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4394 [Define if your linker supports --as-needed and --no-as-needed options.])
4397 case "$target:$tm_file" in
4398 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4399 AC_CACHE_CHECK(linker support for omitting dot symbols,
4400 gcc_cv_ld_no_dot_syms,
4401 [gcc_cv_ld_no_dot_syms=no
4402 if test $in_tree_ld = yes ; then
4403 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4404 gcc_cv_ld_no_dot_syms=yes
4406 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4407 cat > conftest1.s <<EOF
4411 cat > conftest2.s <<EOF
4412 .section ".opd","aw"
4417 .quad .LEfoo,.TOC.@tocbase,0
4423 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4424 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4425 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4426 gcc_cv_ld_no_dot_syms=yes
4428 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4431 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4432 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4433 [Define if your PowerPC64 linker only needs function descriptor syms.])
4436 AC_CACHE_CHECK(linker large toc support,
4437 gcc_cv_ld_large_toc,
4438 [gcc_cv_ld_large_toc=no
4439 if test $in_tree_ld = yes ; then
4440 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4441 gcc_cv_ld_large_toc=yes
4443 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4444 cat > conftest.s <<EOF
4445 .section ".tbss","awT",@nobits
4451 addis 9,13,ie0@got@tprel@ha
4452 ld 9,ie0@got@tprel@l(9)
4454 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4455 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4456 gcc_cv_ld_large_toc=yes
4458 rm -f conftest conftest.o conftest.s
4461 if test x"$gcc_cv_ld_large_toc" = xyes; then
4462 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4463 [Define if your PowerPC64 linker supports a large TOC.])
4468 AC_CACHE_CHECK(linker --build-id support,
4470 [gcc_cv_ld_buildid=no
4471 if test $in_tree_ld = yes ; then
4472 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4473 "$gcc_cv_gld_minor_version" -ge 18 -o \
4474 "$gcc_cv_gld_major_version" -gt 2 \
4475 && test $in_tree_ld_is_elf = yes; then
4476 gcc_cv_ld_buildid=yes
4478 elif test x$gcc_cv_ld != x; then
4479 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4480 gcc_cv_ld_buildid=yes
4483 if test x"$gcc_cv_ld_buildid" = xyes; then
4484 AC_DEFINE(HAVE_LD_BUILDID, 1,
4485 [Define if your linker supports --build-id.])
4488 AC_ARG_ENABLE(linker-build-id,
4489 [AS_HELP_STRING([--enable-linker-build-id],
4490 [compiler will always pass --build-id to linker])],
4492 enable_linker_build_id=no)
4494 if test x"$enable_linker_build_id" = xyes; then
4495 if test x"$gcc_cv_ld_buildid" = xyes; then
4496 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4497 [Define if gcc should always pass --build-id to linker.])
4499 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4503 # In binutils 2.21, GNU ld gained support for new emulations fully
4504 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4505 AC_CACHE_CHECK(linker *_sol2 emulation support,
4506 gcc_cv_ld_sol2_emulation,
4507 [gcc_cv_ld_sol2_emulation=no
4508 if test $in_tree_ld = yes ; then
4509 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4510 "$gcc_cv_gld_minor_version" -ge 21 -o \
4511 "$gcc_cv_gld_major_version" -gt 2 \
4512 && test $in_tree_ld_is_elf = yes; then
4513 gcc_cv_ld_sol2_emulation=yes
4515 elif test x$gcc_cv_ld != x; then
4516 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4517 grep _sol2 > /dev/null; then
4518 gcc_cv_ld_sol2_emulation=yes
4521 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4522 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4523 [Define if your linker supports the *_sol2 emulations.])
4526 AC_CACHE_CHECK(linker --sysroot support,
4528 [gcc_cv_ld_sysroot=no
4529 if test $in_tree_ld = yes ; then
4530 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4531 gcc_cv_ld_sysroot=yes
4533 elif test x$gcc_cv_ld != x; then
4534 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4535 gcc_cv_ld_sysroot=yes
4538 if test x"$gcc_cv_ld_sysroot" = xyes; then
4539 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4540 [Define if your linker supports --sysroot.])
4543 if test x$with_sysroot = x && test x$host = x$target \
4544 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4545 && test "$prefix" != "NONE"; then
4546 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4547 [Define to PREFIX/include if cpp should also search that directory.])
4550 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4551 if test "x$with_headers" != x; then
4552 target_header_dir=$with_headers
4553 elif test "x$with_sysroot" = x; then
4554 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4555 elif test "x$with_build_sysroot" != "x"; then
4556 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4557 elif test "x$with_sysroot" = xyes; then
4558 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4560 target_header_dir="${with_sysroot}${native_system_header_dir}"
4563 target_header_dir=${native_system_header_dir}
4566 # Test for stack protector support in target C library.
4567 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4568 gcc_cv_libc_provides_ssp,
4569 [gcc_cv_libc_provides_ssp=no
4571 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4572 [# glibc 2.4 and later provides __stack_chk_fail and
4573 # either __stack_chk_guard, or TLS access to stack guard canary.
4574 if test -f $target_header_dir/features.h \
4575 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4576 $target_header_dir/features.h > /dev/null; then
4577 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4578 $target_header_dir/features.h > /dev/null; then
4579 gcc_cv_libc_provides_ssp=yes
4580 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4581 $target_header_dir/features.h > /dev/null \
4582 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4583 $target_header_dir/features.h > /dev/null; then
4584 gcc_cv_libc_provides_ssp=yes
4585 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4586 $target_header_dir/features.h > /dev/null && \
4587 test -f $target_header_dir/bits/uClibc_config.h && \
4588 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4589 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4590 gcc_cv_libc_provides_ssp=yes
4595 # Avoid complicated tests (see
4596 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4597 # simply assert that glibc does provide this, which is true for all
4598 # realistically usable GNU/Hurd configurations.
4599 gcc_cv_libc_provides_ssp=yes;;
4600 *-*-darwin* | *-*-freebsd*)
4601 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4602 [echo "no __stack_chk_fail on this target"])
4604 *) gcc_cv_libc_provides_ssp=no ;;
4607 if test x$gcc_cv_libc_provides_ssp = xyes; then
4608 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4609 [Define if your target C library provides stack protector support])
4612 # Test for <sys/sdt.h> on the target.
4613 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4614 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4616 if test -f $target_header_dir/sys/sdt.h; then
4618 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4619 [Define if your target C library provides sys/sdt.h])
4621 AC_MSG_RESULT($have_sys_sdt_h)
4623 # Check if TFmode long double should be used by default or not.
4624 # Some glibc targets used DFmode long double, but with glibc 2.4
4625 # and later they can use TFmode.
4627 powerpc*-*-linux* | \
4631 AC_ARG_WITH(long-double-128,
4632 [AS_HELP_STRING([--with-long-double-128],
4633 [use 128-bit long double by default])],
4634 gcc_cv_target_ldbl128="$with_long_double_128",
4635 [[gcc_cv_target_ldbl128=no
4636 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4637 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4638 && gcc_cv_target_ldbl128=yes
4642 if test x$gcc_cv_target_ldbl128 = xyes; then
4643 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4644 [Define if TFmode long double should be the default])
4647 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4648 gcc_cv_target_dl_iterate_phdr=unknown
4650 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4651 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4652 # libdl there, both complicating its use and breaking compatibility
4653 # between Solaris 10 updates.
4654 *-*-solaris2.1[[1-9]]*)
4655 # <link.h> needs both a dl_iterate_phdr declaration and support for
4656 # compilation with largefile support.
4657 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4658 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4659 gcc_cv_target_dl_iterate_phdr=yes
4661 gcc_cv_target_dl_iterate_phdr=no
4665 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4666 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4667 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4668 [Define if your target C library provides the `dl_iterate_phdr' function.])
4670 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4672 # Find out what GC implementation we want, or may, use.
4674 [AS_HELP_STRING([--with-gc={page,zone}],
4675 [choose the garbage collection mechanism to use
4676 with the compiler])],
4683 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4686 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4691 echo "Using $GGC for garbage collection."
4693 # Libraries to use on the host. This will normally be set by the top
4694 # level Makefile. Here we simply capture the value for our Makefile.
4695 if test -z "${HOST_LIBS+set}"; then
4700 # Use the system's zlib library.
4702 zlibinc="-I\$(srcdir)/../zlib"
4703 AC_ARG_WITH(system-zlib,
4704 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4711 dnl Very limited version of automake's enable-maintainer-mode
4713 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4714 dnl maintainer-mode is disabled by default
4715 AC_ARG_ENABLE(maintainer-mode,
4716 [AS_HELP_STRING([--enable-maintainer-mode],
4717 [enable make rules and dependencies not useful
4718 (and sometimes confusing) to the casual installer])],
4719 maintainer_mode=$enableval,
4722 AC_MSG_RESULT($maintainer_mode)
4724 if test "$maintainer_mode" = "yes"; then
4735 # Make empty files to contain the specs and options for each language.
4736 # Then add #include lines to for a compiler that has specs and/or options.
4742 # These (without "all_") are set in each config-lang.in.
4743 # `language' must be a single word so is spelled singularly.
4746 all_outputs='Makefile'
4747 # List of language makefile fragments.
4749 # Additional files for gengtype
4750 all_gtfiles="$target_gtfiles"
4752 # These are the languages that are set in --enable-languages,
4753 # and are available in the GCC tree.
4754 all_selected_languages=
4756 # Add the language fragments.
4757 # Languages are added via two mechanisms. Some information must be
4758 # recorded in makefile variables, these are defined in config-lang.in.
4759 # We accumulate them and plug them into the main Makefile.
4760 # The other mechanism is a set of hooks for each of the main targets
4761 # like `clean', `install', etc.
4763 language_hooks="Make-hooks"
4765 for lang in ${srcdir}/*/config-lang.in
4768 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4770 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4771 if test "x$lang_alias" = x
4773 echo "$lang doesn't set \$language." 1>&2
4776 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4777 subdirs="$subdirs $subdir"
4779 # $gcc_subdir is where the gcc integration files are to be found
4780 # for a language, both for internal compiler purposes (compiler
4781 # sources implementing front-end to GCC tree converters), and for
4782 # build infrastructure purposes (Make-lang.in, etc.)
4784 # This will be <subdir> (relative to $srcdir) if a line like
4785 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4786 # is found in <langdir>/config-lang.in, and will remain <langdir>
4789 # Except for the language alias (fetched above), the regular
4790 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4791 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4792 # only this and the language alias.
4794 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4795 if [ "$gcc_subdir" = "" ]; then
4796 gcc_subdir="$subdir"
4799 case ",$enable_languages," in
4801 all_selected_languages="$all_selected_languages $lang_alias"
4802 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4803 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4815 . ${srcdir}/$gcc_subdir/config-lang.in
4816 if test "x$language" = x
4818 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4823 case ",$enable_languages," in
4826 for i in $subdir_requires; do
4827 test -f "${srcdir}/$i/config-lang.in" && continue
4835 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4836 if test -f $srcdir/$gcc_subdir/lang.opt; then
4837 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4838 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4840 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4841 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4843 all_languages="$all_languages $language"
4844 all_compilers="$all_compilers $compilers"
4845 all_outputs="$all_outputs $outputs"
4846 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4847 case ",$enable_languages," in
4849 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4851 AC_SUBST(enable_lto)
4857 # Pick up gtfiles for c
4859 . ${srcdir}/c-config-lang.in
4860 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4863 for language in $all_selected_languages
4865 check_languages="$check_languages check-$language"
4868 # We link each language in with a set of hooks, reached indirectly via
4869 # lang.${target}. Only do so for selected languages.
4873 target_list="all.cross start.encap rest.encap tags \
4874 install-common install-man install-info install-pdf install-html dvi \
4875 pdf html uninstall info man srcextra srcman srcinfo \
4876 mostlyclean clean distclean maintainer-clean install-plugin"
4878 for t in $target_list
4881 for lang in $all_selected_languages
4885 echo "lang.$t: $x" >> Make-hooks
4889 # Option include files
4892 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4893 option_includes="option-includes.mk"
4894 AC_SUBST_FILE(option_includes)
4902 echo "dir ." > .gdbinit
4903 echo "dir ${srcdir}" >> .gdbinit
4904 if test x$gdb_needs_out_file_path = xyes
4906 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4908 if test "x$subdirs" != x; then
4911 echo "dir ${srcdir}/$s" >> .gdbinit
4914 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4916 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4917 AC_SUBST(gcc_tooldir)
4920 # Find a directory in which to install a shared libgcc.
4922 AC_ARG_ENABLE(version-specific-runtime-libs,
4923 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4924 [specify that runtime libraries should be
4925 installed in a compiler-specific directory])])
4927 # Substitute configuration variables
4930 AC_SUBST(all_compilers)
4931 AC_SUBST(all_gtfiles)
4932 AC_SUBST(all_lang_makefrags)
4933 AC_SUBST(all_languages)
4934 AC_SUBST(all_selected_languages)
4935 AC_SUBST(build_exeext)
4936 AC_SUBST(build_install_headers_dir)
4937 AC_SUBST(build_xm_file_list)
4938 AC_SUBST(build_xm_include_list)
4939 AC_SUBST(build_xm_defines)
4940 AC_SUBST(build_file_translate)
4941 AC_SUBST(check_languages)
4942 AC_SUBST(cpp_install_dir)
4943 AC_SUBST(xmake_file)
4944 AC_SUBST(tmake_file)
4945 AC_SUBST(TM_ENDIAN_CONFIG)
4946 AC_SUBST(TM_MULTILIB_CONFIG)
4947 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4948 AC_SUBST(extra_gcc_objs)
4949 AC_SUBST(user_headers_inc_next_pre)
4950 AC_SUBST(user_headers_inc_next_post)
4951 AC_SUBST(extra_headers_list)
4952 AC_SUBST(extra_objs)
4953 AC_SUBST(extra_passes)
4954 AC_SUBST(extra_programs)
4955 AC_SUBST(float_h_file)
4956 AC_SUBST(gcc_config_arguments)
4957 AC_SUBST(gcc_gxx_include_dir)
4958 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
4959 AC_SUBST(host_exeext)
4960 AC_SUBST(host_xm_file_list)
4961 AC_SUBST(host_xm_include_list)
4962 AC_SUBST(host_xm_defines)
4963 AC_SUBST(out_host_hook_obj)
4965 AC_SUBST(lang_opt_files)
4966 AC_SUBST(lang_specs_files)
4967 AC_SUBST(lang_tree_files)
4968 AC_SUBST(local_prefix)
4970 AC_SUBST(objc_boehm_gc)
4972 AC_SUBST(out_object_file)
4973 AC_SUBST(common_out_file)
4974 AC_SUBST(common_out_object_file)
4975 AC_SUBST(tm_file_list)
4976 AC_SUBST(tm_include_list)
4977 AC_SUBST(tm_defines)
4978 AC_SUBST(tm_p_file_list)
4979 AC_SUBST(tm_p_include_list)
4980 AC_SUBST(xm_file_list)
4981 AC_SUBST(xm_include_list)
4982 AC_SUBST(xm_defines)
4983 AC_SUBST(use_gcc_stdint)
4984 AC_SUBST(c_target_objs)
4985 AC_SUBST(cxx_target_objs)
4986 AC_SUBST(fortran_target_objs)
4987 AC_SUBST(target_cpu_default)
4989 AC_SUBST_FILE(language_hooks)
4992 if test x${build} = x${host} ; then
4993 if test x${host} = x${target} ; then
4994 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4996 echo "Links are now set up to build a cross-compiler" 1>&2
4997 echo " from ${host} to ${target}." 1>&2
5000 if test x${host} = x${target} ; then
5001 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5002 echo " for ${target}." 1>&2
5004 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5005 echo " from ${host} to ${target}." 1>&2
5009 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5010 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5012 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5013 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5015 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5016 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5017 if test "x${CLOOGLIBS}" != "x" ; then
5018 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5021 # Check for plugin support
5022 AC_ARG_ENABLE(plugin,
5023 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5024 enable_plugin=$enableval,
5025 enable_plugin=yes; default_plugin=yes)
5031 if test x$build = x$host; then
5032 export_sym_check="nm${exeext} -g"
5033 elif test x$host = x$target; then
5034 export_sym_check="$gcc_cv_nm -g"
5040 if test x$build = x$host; then
5041 export_sym_check="objdump${exeext} -T"
5042 elif test x$host = x$target; then
5043 export_sym_check="$gcc_cv_objdump -T"
5050 if test x"$enable_plugin" = x"yes"; then
5052 AC_MSG_CHECKING([for exported symbols])
5053 if test "x$export_sym_check" != x; then
5054 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5055 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5056 if $export_sym_check conftest | grep foobar > /dev/null; then
5057 : # No need to use a flag
5058 AC_MSG_RESULT([yes])
5060 AC_MSG_RESULT([yes])
5061 AC_MSG_CHECKING([for -rdynamic])
5062 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5063 if $export_sym_check conftest | grep foobar > /dev/null; then
5065 pluginlibs="-rdynamic"
5070 AC_MSG_RESULT([$plugin_rdynamic])
5073 AC_MSG_RESULT([unable to check])
5078 AC_SEARCH_LIBS([dlopen], [dl])
5079 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5080 pluginlibs="$pluginlibs -ldl"
5084 # Check that we can build shared objects with -fPIC -shared
5085 saved_LDFLAGS="$LDFLAGS"
5086 saved_CFLAGS="$CFLAGS"
5089 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5090 CFLAGS="$CFLAGS -fPIC"
5091 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5094 CFLAGS="$CFLAGS -fPIC"
5095 LDFLAGS="$LDFLAGS -fPIC -shared"
5098 AC_MSG_CHECKING([for -fPIC -shared])
5100 [extern int X;],[return X == 0;],
5101 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5102 [AC_MSG_RESULT([no]); have_pic_shared=no])
5103 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5107 LDFLAGS="$saved_LDFLAGS"
5108 CFLAGS="$saved_CFLAGS"
5110 # If plugin support had been requested but not available, fail.
5111 if test x"$enable_plugin" = x"no" ; then
5112 if test x"$default_plugin" != x"yes"; then
5114 Building GCC with plugin support requires a host that supports
5115 -fPIC, -shared, -ldl and -rdynamic.])
5120 AC_SUBST(pluginlibs)
5121 AC_SUBST(enable_plugin)
5122 if test x"$enable_plugin" = x"yes"; then
5123 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5127 AC_ARG_ENABLE(libquadmath-support,
5128 [AS_HELP_STRING([--disable-libquadmath-support],
5129 [disable libquadmath support for Fortran])],
5130 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5131 ENABLE_LIBQUADMATH_SUPPORT=yes)
5132 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5133 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5134 [Define to 1 to enable libquadmath support])
5138 # Specify what hash style to use by default.
5139 AC_ARG_WITH([linker-hash-style],
5140 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5141 [specify the linker hash style])],
5142 [case x"$withval" in
5144 LINKER_HASH_STYLE=sysv
5147 LINKER_HASH_STYLE=gnu
5150 LINKER_HASH_STYLE=both
5153 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5156 [LINKER_HASH_STYLE=''])
5157 if test x"${LINKER_HASH_STYLE}" != x; then
5158 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5159 [The linker hash style])
5162 # Configure the subdirectories
5163 # AC_CONFIG_SUBDIRS($subdirs)
5165 # Create the Makefile
5166 # and configure language subdirectories
5167 AC_CONFIG_FILES($all_outputs)
5169 AC_CONFIG_COMMANDS([default],
5171 case ${CONFIG_HEADERS} in
5172 *auto-host.h:config.in*)
5175 # Make sure all the subdirs exist.
5176 for d in $subdirs doc build common c-family
5178 test -d $d || mkdir $d
5181 [subdirs='$subdirs'])