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]*\.\([0-9]*\)'`
2299 # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2302 # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2303 # /usr/ccs/bin/ld has been configured.
2304 ld_ver=`$gcc_cv_ld -V 2>&1`
2305 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2306 ld_vers=`echo $ld_ver | sed -n \
2307 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2308 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2309 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2317 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2318 [[if test $in_tree_ld = yes ; then
2320 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2321 && test $in_tree_ld_is_elf = yes; then
2322 gcc_cv_ld_hidden=yes
2325 gcc_cv_ld_hidden=yes
2326 if test x"$ld_is_gold" = xyes; then
2328 elif echo "$ld_ver" | grep GNU > /dev/null; then
2329 if test 0"$ld_date" -lt 20020404; then
2330 if test -n "$ld_date"; then
2331 # If there was date string, but was earlier than 2002-04-04, fail
2333 elif test -z "$ld_vers"; then
2334 # If there was no date string nor ld version number, something is wrong
2337 test -z "$ld_vers_patch" && ld_vers_patch=0
2338 if test "$ld_vers_major" -lt 2; then
2340 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2341 gcc_cv_ld_hidden="no"
2342 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2350 # Darwin ld has some visibility support.
2351 gcc_cv_ld_hidden=yes
2353 hppa64*-*-hpux* | ia64*-*-hpux*)
2354 gcc_cv_ld_hidden=yes
2357 # .hidden support was backported to Solaris 8, starting with ld
2359 if test "$ld_vers_minor" -ge 276; then
2360 gcc_cv_ld_hidden=yes
2365 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2366 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2367 # .symbolic was only added in Solaris 9 12/02.
2368 gcc_cv_ld_hidden=yes
2376 libgcc_visibility=no
2377 AC_SUBST(libgcc_visibility)
2378 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2379 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2380 libgcc_visibility=yes
2381 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2382 [Define if your assembler and linker support .hidden.])
2385 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2386 gcc_cv_ld_ro_rw_mix=unknown
2387 if test $in_tree_ld = yes ; then
2388 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2389 && test $in_tree_ld_is_elf = yes; then
2390 gcc_cv_ld_ro_rw_mix=read-write
2392 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2393 echo '.section myfoosect, "a"' > conftest1.s
2394 echo '.section myfoosect, "aw"' > conftest2.s
2395 echo '.byte 1' >> conftest2.s
2396 echo '.section myfoosect, "a"' > conftest3.s
2397 echo '.byte 0' >> conftest3.s
2398 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2399 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2400 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2401 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2402 conftest2.o conftest3.o > /dev/null 2>&1; then
2403 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2404 | sed -e '/myfoosect/!d' -e N`
2405 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2406 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2407 gcc_cv_ld_ro_rw_mix=read-only
2409 gcc_cv_ld_ro_rw_mix=read-write
2414 rm -f conftest.* conftest[123].*
2417 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2418 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2419 [Define if your linker links a mix of read-only
2420 and read-write sections into a read-write section.])
2422 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2424 gcc_AC_INITFINI_ARRAY
2426 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2427 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2435 [[# GAS versions before 2.11 do not support uleb128,
2436 # despite appearing to.
2437 # ??? There exists an elf-specific test that will crash
2438 # the assembler. Perhaps it's better to figure out whether
2439 # arbitrary sections are supported and try the test.
2440 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2441 if echo "$as_ver" | grep GNU > /dev/null; then
2442 as_vers=`echo $as_ver | sed -n \
2443 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2444 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2445 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2446 if test $as_major -eq 2 && test $as_minor -lt 11
2448 else gcc_cv_as_leb128=yes
2451 [AC_DEFINE(HAVE_AS_LEB128, 1,
2452 [Define if your assembler supports .sleb128 and .uleb128.])])
2454 # Check if we have assembler support for unwind directives.
2455 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2462 .cfi_escape 1, 2, 3, 4, 5
2466 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2467 # read-only and read-write sections, we need to make sure that the
2468 # assembler used emits read-write .eh_frame sections.
2469 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2470 if test "x$gcc_cv_objdump" != x; then
2471 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2472 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2473 gcc_cv_as_cfi_directive=no
2476 i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2477 # On Solaris/x86, make sure that GCC and gas agree on using
2478 # read-only .eh_frame sections for 64-bit.
2479 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2480 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2481 sed -e /.eh_frame/!d -e N | \
2482 grep READONLY > /dev/null; then
2483 gcc_cv_as_cfi_directive=yes
2485 gcc_cv_as_cfi_directive=no
2489 gcc_cv_as_cfi_directive=yes
2494 # no objdump, err on the side of caution
2495 gcc_cv_as_cfi_directive=no
2498 gcc_cv_as_cfi_directive=yes
2502 gcc_cv_as_cfi_directive=yes
2505 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2506 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2510 .cfi_adjust_cfa_offset 64
2512 .cfi_adjust_cfa_offset 128
2515 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2516 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2517 gcc_cv_as_cfi_advance_working=yes
2521 # no objdump, err on the side of caution
2522 gcc_cv_as_cfi_advance_working=no
2524 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2525 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2526 [`if test $gcc_cv_as_cfi_directive = yes \
2527 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2528 [Define 0/1 if your assembler supports CFI directives.])
2530 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2531 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2532 gcc_cv_as_cfi_personality_directive, ,,
2535 .cfi_personality 0, symbol
2537 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2538 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2539 then echo 1; else echo 0; fi`],
2540 [Define 0/1 if your assembler supports .cfi_personality.])
2542 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2543 gcc_cv_as_cfi_sections_directive, ,,
2545 .cfi_sections .debug_frame, .eh_frame
2549 win32 | pe | cygwin* | mingw32* | uwin*)
2550 # Need to check that we generated the correct relocation for the
2551 # .debug_frame section. This was fixed for binutils 2.21.
2552 gcc_cv_as_cfi_sections_directive=no
2553 if test "x$gcc_cv_objdump" != x; then
2554 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2555 grep secrel > /dev/null; then
2556 gcc_cv_as_cfi_sections_directive=yes
2561 gcc_cv_as_cfi_sections_directive=yes
2564 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2565 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2566 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2567 then echo 1; else echo 0; fi`],
2568 [Define 0/1 if your assembler supports .cfi_sections.])
2570 # GAS versions up to and including 2.11.0 may mis-optimize
2572 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2580 .section .eh_frame,"aw",@progbits
2582 .4byte .LECIE1-.LSCIE1
2596 .4byte .LEFDE1-.LASFDE1
2598 .4byte .LASFDE1-__FRAME_BEGIN__
2606 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2607 cat > conftest.lit <<EOF
2608 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2609 0010 01000000 12000000 18000000 00000000 ................
2610 0020 08000000 04080000 0044 .........D @&t@
2612 cat > conftest.big <<EOF
2613 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2614 0010 00000001 00000012 00000018 00000000 ................
2615 0020 00000008 04000000 0844 .........D @&t@
2617 # If the assembler didn't choke, and we can objdump,
2618 # and we got the correct data, then succeed.
2619 # The text in the here-document typically retains its unix-style line
2620 # endings, while the output of objdump will use host line endings.
2621 # Therefore, use diff -b for the comparisons.
2622 if test x$gcc_cv_objdump != x \
2623 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2624 | tail -3 > conftest.got \
2625 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2626 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2628 gcc_cv_as_eh_frame=yes
2629 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2630 gcc_cv_as_eh_frame=buggy
2632 # Uh oh, what do we do now?
2633 gcc_cv_as_eh_frame=no
2636 if test $gcc_cv_as_eh_frame = buggy; then
2637 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2638 [Define if your assembler mis-optimizes .eh_frame data.])
2641 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2642 [elf,2,12,0], [--fatal-warnings],
2643 [.section .rodata.str, "aMS", @progbits, 1])
2644 if test $gcc_cv_as_shf_merge = no; then
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])
2649 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2650 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2651 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2653 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2654 gcc_cv_as_comdat_group,
2655 [elf,2,16,0], [--fatal-warnings],
2656 [.section .text,"axG",@progbits,.foo,comdat])
2657 if test $gcc_cv_as_comdat_group = yes; then
2658 gcc_cv_as_comdat_group_percent=no
2659 gcc_cv_as_comdat_group_group=no
2661 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2662 gcc_cv_as_comdat_group_percent,
2663 [elf,2,16,0], [--fatal-warnings],
2664 [.section .text,"axG",%progbits,.foo,comdat])
2665 if test $gcc_cv_as_comdat_group_percent = yes; then
2666 gcc_cv_as_comdat_group_group=no
2669 # Sun as uses a completely different syntax.
2674 .group foo,".text%foo",#comdat
2675 .section ".text%foo", #alloc,#execinstr,#progbits
2680 i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2682 .group foo,.text%foo,#comdat
2683 .section .text%foo, "ax", @progbits
2689 gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2690 gcc_cv_as_comdat_group_group,
2696 if test x"$ld_is_gold" = xyes; then
2698 elif test $in_tree_ld = yes ; then
2700 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2701 && test $in_tree_ld_is_elf = yes; then
2704 elif echo "$ld_ver" | grep GNU > /dev/null; then
2706 if test 0"$ld_date" -lt 20050308; then
2707 if test -n "$ld_date"; then
2708 # If there was date string, but was earlier than 2005-03-08, fail
2710 elif test "$ld_vers_major" -lt 2; then
2712 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2719 *-*-solaris2.1[1-9]*)
2721 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2722 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2725 # If using Sun as for COMDAT group as emitted by GCC, one needs at
2726 # least ld version 1.2267.
2727 if test "$ld_vers_major" -gt 1; then
2729 elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2731 elif test "$ld_vers_minor" -ge 2267; then
2736 # Assume linkers other than GNU ld don't support COMDAT group.
2742 # Allow overriding the automatic COMDAT group tests above.
2743 AC_ARG_ENABLE(comdat,
2744 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2745 [comdat_group="$enable_comdat"])
2746 if test $comdat_group = no; then
2747 gcc_cv_as_comdat_group=no
2748 gcc_cv_as_comdat_group_percent=no
2749 gcc_cv_as_comdat_group_group=no
2751 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2752 [`if test $gcc_cv_as_comdat_group = yes \
2753 || test $gcc_cv_as_comdat_group_percent = yes \
2754 || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
2755 [Define 0/1 if your assembler and linker support COMDAT groups.])
2757 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2758 gcc_cv_as_discriminator,
2762 .loc 1 1 0 discriminator 1],,
2763 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2764 [Define if your assembler supports the .loc discriminator sub-directive.])])
2766 # Thread-local storage - the check is heavily parameterized.
2775 .section ".tdata","awT",@progbits
2778 ldq $27,__tls_get_addr($29) !literal!1
2779 lda $16,foo($29) !tlsgd!1
2780 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2781 ldq $27,__tls_get_addr($29) !literal!2
2782 lda $16,foo($29) !tlsldm!2
2783 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2784 ldq $1,foo($29) !gotdtprel
2785 ldah $2,foo($29) !dtprelhi
2786 lda $3,foo($2) !dtprello
2787 lda $4,foo($29) !dtprel
2788 ldq $1,foo($29) !gottprel
2789 ldah $2,foo($29) !tprelhi
2790 lda $3,foo($2) !tprello
2791 lda $4,foo($29) !tprel'
2794 tls_as_opt=--fatal-warnings
2796 cris-*-*|crisv32-*-*)
2798 .section ".tdata","awT",@progbits
2805 tls_as_opt=--fatal-warnings
2809 .section ".tdata","awT",@progbits
2821 .section ".tdata","awT",@progbits
2825 addil LT%foo-$tls_gdidx$,gp
2826 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2829 addil LT%foo-$tls_ldidx$,gp
2831 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2832 addil LR%foo-$tls_dtpoff$,%ret0
2833 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2835 addil LT%foo-$tls_ieoff$,gp
2836 ldw RT%foo-$tls_ieoff$(%r1),%t2
2839 addil LR%foo-$tls_leoff$,%t1
2840 ldo RR%foo-$tls_leoff$(%r1),%t2'
2843 tls_as_opt=--fatal-warnings
2847 .section ".tdata","awT",%progbits
2858 i[34567]86-*-* | x86_64-*-solaris2.1[0-9]*)
2860 i[34567]86-*-solaris2.*)
2862 tga_func=___tls_get_addr
2864 x86_64-*-solaris2.1[0-9]*)
2866 tga_func=__tls_get_addr
2872 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2874 .section .tdata,"awt",@progbits'
2878 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2879 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2883 .section ".tdata","awT",@progbits'
2886 tls_as_opt="--fatal-warnings"
2888 conftest_s="$conftest_s
2892 leal foo@tlsgd(,%ebx,1), %eax
2893 leal foo@tlsldm(%ebx), %eax
2894 leal foo@dtpoff(%eax), %edx
2895 movl foo@gottpoff(%ebx), %eax
2896 subl foo@gottpoff(%ebx), %eax
2897 addl foo@gotntpoff(%ebx), %eax
2898 movl foo@indntpoff, %eax
2899 movl \$foo@tpoff, %eax
2900 subl \$foo@tpoff, %eax
2901 leal foo@ntpoff(%ecx), %eax"
2905 .section ".tdata","awT",@progbits
2909 leaq foo@TLSGD(%rip), %rdi
2910 leaq foo@TLSLD(%rip), %rdi
2911 leaq foo@DTPOFF(%rax), %rdx
2912 movq foo@GOTTPOFF(%rip), %rax
2913 movq $foo@TPOFF, %rax'
2916 tls_as_opt=--fatal-warnings
2920 .section ".tdata","awT",@progbits
2923 addl r16 = @ltoff(@dtpmod(foo#)), gp
2924 addl r17 = @ltoff(@dtprel(foo#)), gp
2925 addl r18 = @ltoff(@tprel(foo#)), gp
2926 addl r19 = @dtprel(foo#), gp
2927 adds r21 = @dtprel(foo#), r13
2928 movl r23 = @dtprel(foo#)
2929 addl r20 = @tprel(foo#), gp
2930 adds r22 = @tprel(foo#), r13
2931 movl r24 = @tprel(foo#)'
2934 tls_as_opt=--fatal-warnings
2938 .section .tdata,"awT",@progbits
2942 addiu $4, $28, %tlsgd(x)
2943 addiu $4, $28, %tlsldm(x)
2944 lui $4, %dtprel_hi(x)
2945 addiu $4, $4, %dtprel_lo(x)
2946 lw $4, %gottprel(x)($28)
2947 lui $4, %tprel_hi(x)
2948 addiu $4, $4, %tprel_lo(x)'
2951 tls_as_opt='-32 --fatal-warnings'
2955 .section .tdata,"awT",@progbits
2960 move.l x@TLSGD(%a5),%a0
2961 move.l x@TLSLDM(%a5),%a0
2962 move.l x@TLSLDO(%a5),%a0
2963 move.l x@TLSIE(%a5),%a0
2964 move.l x@TLSLE(%a5),%a0'
2967 tls_as_opt='--fatal-warnings'
2971 .section ".tdata","awT",@progbits
2979 addi 3,31,ld0@got@tlsgd
2981 addi 3,31,x1@got@tlsld
2984 addis 9,3,x2@dtprel@ha
2985 addi 9,9,x2@dtprel@l
2986 lwz 9,x3@got@tprel(31)
2989 addis 9,2,x2@tprel@ha
2990 addi 9,9,x2@tprel@l'
2993 tls_as_opt="-a32 --fatal-warnings"
2997 .section ".tdata","awT",@progbits
3005 addi 3,2,ld0@got@tlsgd
3011 addi 3,2,x1@got@tlsld
3017 addis 9,3,x2@dtprel@ha
3018 addi 9,9,x2@dtprel@l
3021 ld 9,x3@got@dtprel(2)
3027 tls_as_opt="-a64 --fatal-warnings"
3031 .section ".tdata","awT",@progbits
3040 l %r1,foo@GOTNTPOFF(%r12)
3041 l %r1,0(%r1):tls_load:foo
3042 bas %r14,0(%r1,%r13):tls_gdcall:foo
3043 bas %r14,0(%r1,%r13):tls_ldcall:foo'
3046 tls_as_opt="-m31 --fatal-warnings"
3050 .section ".tdata","awT",@progbits
3058 lg %r1,foo@GOTNTPOFF(%r12)
3059 larl %r1,foo@INDNTPOFF
3060 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
3061 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3064 tls_as_opt="-m64 -Aesame --fatal-warnings"
3066 sh-*-* | sh[34]-*-*)
3068 .section ".tdata","awT",@progbits
3078 tls_as_opt=--fatal-warnings
3082 sparc*-sun-solaris2.*)
3084 tga_func=__tls_get_addr
3090 if test x$on_solaris = xyes && test x$gas_flag = xno; then
3092 .section ".tdata",#alloc,#write,#tls'
3097 .section ".tdata","awT",@progbits'
3100 tls_as_opt="-32 --fatal-warnings"
3102 conftest_s="$conftest_s
3105 sethi %tgd_hi22(foo), %o0
3106 add %o0, %tgd_lo10(foo), %o1
3107 add %l7, %o1, %o0, %tgd_add(foo)
3108 call __tls_get_addr, %tgd_call(foo)
3109 sethi %tldm_hi22(foo), %l1
3110 add %l1, %tldm_lo10(foo), %l2
3111 add %l7, %l2, %o0, %tldm_add(foo)
3112 call __tls_get_addr, %tldm_call(foo)
3113 sethi %tldo_hix22(foo), %l3
3114 xor %l3, %tldo_lox10(foo), %l4
3115 add %o0, %l4, %l5, %tldo_add(foo)
3116 sethi %tie_hi22(foo), %o3
3117 add %o3, %tie_lo10(foo), %o3
3118 ld [%l7 + %o3], %o2, %tie_ld(foo)
3119 add %g7, %o2, %o4, %tie_add(foo)
3120 sethi %tle_hix22(foo), %l1
3121 xor %l1, %tle_lox10(foo), %o5
3122 ld [%g7 + %o5], %o1"
3126 .section ".tdata","awT",@progbits
3129 addli r0, zero, tls_gd(foo)
3130 auli r0, zero, tls_gd_ha16(foo)
3131 addli r0, r0, tls_gd_lo16(foo)
3133 addli r0, zero, tls_ie(foo)
3134 auli r0, r0, tls_ie_ha16(foo)
3135 addli r0, r0, tls_ie_lo16(foo)'
3138 tls_as_opt="--fatal-warnings"
3142 .section ".tdata","awT",@progbits
3145 shl16insli r0, zero, hw0_last_tls_gd(foo)
3146 shl16insli r0, zero, hw1_last_tls_gd(foo)
3147 shl16insli r0, r0, hw0_tls_gd(foo)
3149 shl16insli r0, zero, hw1_last_tls_ie(foo)
3150 shl16insli r0, r0, hw0_tls_ie(foo)'
3153 tls_as_opt="--fatal-warnings"
3157 .section ".tdata","awT",@progbits
3160 movi a8, foo@TLSFUNC
3161 movi a10, foo@TLSARG
3162 callx8.tls a8, foo@TLSCALL'
3169 if test "x$enable_tls" = xno ; then
3170 : # TLS explicitly disabled.
3171 elif test "x$enable_tls" = xyes ; then
3172 set_have_as_tls=yes # TLS explicitly enabled.
3173 elif test -z "$tls_first_major"; then
3174 : # If we don't have a check, assume no support.
3176 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3177 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3178 [set_have_as_tls=yes])
3182 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3183 # with TLS support are in use, native TLS cannot work.
3187 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3188 # gld with TLS support are in use, native TLS cannot work.
3191 # TLS was introduced in the Solaris 9 FCS release and backported to
3192 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3193 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3194 # ld and GCC don't support any longer.
3196 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3198 # Check ld and ld.so.1 TLS support.
3199 if echo "$ld_ver" | grep GNU > /dev/null; then
3200 # Assume all interesting versions of GNU ld have TLS support.
3201 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3205 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3207 min_tls_ld_vers_minor=280
3209 # Solaris 8/SPARC ld has TLS support since version 1.272.
3210 sparc*-*-solaris2.8)
3211 min_tls_ld_vers_minor=272
3213 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3215 min_tls_ld_vers_minor=374
3217 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3218 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3219 min_tls_ld_vers_minor=343
3222 if test "$ld_vers_major" -gt 1 || \
3223 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3229 AC_MSG_RESULT($ld_tls_support)
3232 save_LDFLAGS="$LDFLAGS"
3236 AC_MSG_CHECKING(alternate thread library)
3238 # TLS support was backported to Solaris 8 patches, but only lives in
3239 # the alternate thread library which became the default in Solaris 9.
3240 # We want to always use that, irrespective of TLS support.
3242 # Take multilib subdir into account. There's no spec to handle
3243 # this. The 64 symlink exists since Solaris 8.
3244 lwp_dir=/usr/lib/lwp
3245 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3246 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3253 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3254 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3255 [Define to the linker flags to use for -pthread.])
3256 AC_MSG_RESULT($lwp_dir)
3258 AC_MSG_CHECKING(library containing $tga_func)
3259 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3260 # (32-bit x86) only lived in libthread, so check for that. Keep
3261 # set_have_as_tls if found, disable if not.
3262 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3263 # Clear LIBS if we cannot support TLS.
3264 if test $set_have_as_tls = no; then
3267 # Always define LIB_TLS_SPEC, even without TLS support.
3268 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3269 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3270 AC_MSG_RESULT($LIBS)
3273 LDFLAGS="$save_LDFLAGS"
3276 if test $set_have_as_tls = yes ; then
3277 AC_DEFINE(HAVE_AS_TLS, 1,
3278 [Define if your assembler and linker support thread-local storage.])
3281 # Target-specific assembler checks.
3283 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3284 gcc_cv_ld_static_dynamic=no
3285 gcc_cv_ld_static_option='-Bstatic'
3286 gcc_cv_ld_dynamic_option='-Bdynamic'
3287 if test $in_tree_ld = yes ; then
3288 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3289 gcc_cv_ld_static_dynamic=yes
3291 elif test x$gcc_cv_ld != x; then
3292 # Check if linker supports -Bstatic/-Bdynamic option
3293 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3294 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3295 gcc_cv_ld_static_dynamic=yes
3298 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3300 gcc_cv_ld_static_dynamic=yes
3301 gcc_cv_ld_static_option="-noso"
3302 gcc_cv_ld_dynamic_option="-so_archive"
3304 # HP-UX ld uses -a flags to select between shared and archive.
3306 if test x"$gnu_ld" = xno; then
3307 gcc_cv_ld_static_dynamic=yes
3308 gcc_cv_ld_static_option="-aarchive_shared"
3309 gcc_cv_ld_dynamic_option="-adefault"
3312 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3314 gcc_cv_ld_static_dynamic=yes
3316 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3318 gcc_cv_ld_static_dynamic=yes
3323 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3324 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3325 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3326 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3327 [Define to the linker option to disable use of shared objects.])
3328 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3329 [Define to the linker option to enable use of shared objects.])
3331 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3333 if test x"$demangler_in_ld" = xyes; then
3334 AC_MSG_CHECKING(linker --demangle support)
3335 gcc_cv_ld_demangle=no
3336 if test $in_tree_ld = yes; then
3337 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3338 gcc_cv_ld_demangle=yes
3340 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3341 # Check if the GNU linker supports --demangle option
3342 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3343 gcc_cv_ld_demangle=yes
3346 if test x"$gcc_cv_ld_demangle" = xyes; then
3347 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3348 [Define if your linker supports --demangle option.])
3350 AC_MSG_RESULT($gcc_cv_ld_demangle)
3353 AC_MSG_CHECKING(linker plugin support)
3355 if test -f liblto_plugin.la; then
3356 save_ld_ver="$ld_ver"
3357 save_ld_vers_major="$ld_vers_major"
3358 save_ld_vers_minor="$ld_vers_minor"
3359 save_ld_is_gold="$ld_is_gold"
3363 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3365 # FIXME: ld_is_gold?
3366 ld_vers_major="$gcc_cv_gld_major_version"
3367 ld_vers_minor="$gcc_cv_gld_minor_version"
3369 # Determine plugin linker version.
3370 # FIXME: Partial duplicate from above, generalize.
3372 ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3373 if echo "$ld_ver" | grep GNU > /dev/null; then
3374 if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3376 ld_vers=`echo $ld_ver | sed -n \
3377 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3379 ld_vers=`echo $ld_ver | sed -n \
3380 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3382 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3383 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3388 # Determine plugin support.
3389 if echo "$ld_ver" | grep GNU > /dev/null; then
3390 # Require GNU ld or gold 2.21+ for plugin support by default.
3391 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3393 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3394 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3399 ld_ver="$save_ld_ver"
3400 ld_vers_major="$save_ld_vers_major"
3401 ld_vers_minor="$save_ld_vers_minor"
3402 ld_is_gold="$save_ld_is_gold"
3404 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3405 [Define to the level of your linker's plugin support.])
3406 AC_MSG_RESULT($gcc_cv_lto_plugin)
3409 # All TARGET_ABI_OSF targets.
3410 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3411 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3412 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3415 extbl $3, $2, $3 !lituse_bytoff!1
3416 ldq $2, a($29) !literal!1
3417 ldq $4, b($29) !literal!2
3418 ldq_u $3, 0($2) !lituse_base!1
3419 ldq $27, f($29) !literal!5
3420 jsr $26, ($27), f !lituse_jsr!5
3421 ldah $29, 0($26) !gpdisp!3
3422 lda $0, c($29) !gprel
3423 ldah $1, d($29) !gprelhigh
3424 lda $1, d($1) !gprellow
3425 lda $29, 0($29) !gpdisp!3],,
3426 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3427 [Define if your assembler supports explicit relocations.])])
3428 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3429 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3432 ldq $27, a($29) !literal!1
3433 jsr $26, ($27), a !lituse_jsrdirect!1],,
3434 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3435 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3439 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3440 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3441 [-no-mul-bug-abort], [.text],,
3442 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3443 [Define if your assembler supports the -no-mul-bug-abort option.])])
3447 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3448 [.register %g2, #scratch],,
3449 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3450 [Define if your assembler supports .register.])])
3452 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3454 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3455 [Define if your assembler supports -relax option.])])
3457 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3458 gcc_cv_as_sparc_gotdata_op,,
3465 sethi %gdop_hix22(foo), %g1
3466 xor %g1, %gdop_lox10(foo), %g1
3467 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3468 [if test x$gcc_cv_ld != x \
3469 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3470 if test x$gcc_cv_objdump != x; then
3471 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3472 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3473 gcc_cv_as_sparc_gotdata_op=no
3475 gcc_cv_as_sparc_gotdata_op=yes
3480 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3481 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3483 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3484 gcc_cv_as_sparc_ua_pcrel,,
3492 .uaword %r_disp32(foo)],
3493 [if test x$gcc_cv_ld != x \
3494 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3495 gcc_cv_as_sparc_ua_pcrel=yes
3498 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3499 [Define if your assembler and linker support unaligned PC relative relocs.])
3501 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3502 gcc_cv_as_sparc_ua_pcrel_hidden,,
3507 .uaword %r_disp32(foo)
3508 .byte 0x32, 0x33, 0x34
3513 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3514 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3515 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3516 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3517 if $gcc_cv_objdump -R conftest 2> /dev/null \
3518 | grep 'DISP32' > /dev/null 2>&1; then
3521 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3525 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3526 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3527 ]) # unaligned pcrel relocs
3529 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3530 gcc_cv_as_sparc_offsetable_lo10,,
3533 or %g1, %lo(ab) + 12, %g1
3534 or %g1, %lo(ab + 12), %g1],
3535 [if test x$gcc_cv_objdump != x \
3536 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3537 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3538 gcc_cv_as_sparc_offsetable_lo10=yes
3540 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3541 [Define if your assembler supports offsetable %lo().])])
3543 gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3544 gcc_cv_as_sparc_fmaf,,
3547 .register %g2, #scratch
3548 .register %g3, #scratch
3550 fmaddd %f0, %f2, %f4, %f6
3551 addxccc %g1, %g2, %g3
3552 fsrl32 %f2, %f4, %f8
3553 fnaddd %f10, %f12, %f14],,
3554 [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3555 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3559 i[34567]86-*-* | x86_64-*-*)
3563 # Full C++ conformance when using a shared libstdc++-v3 requires some
3564 # support from the Cygwin DLL, which in more recent versions exports
3565 # wrappers to aid in interposing and redirecting operators new, delete,
3566 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3567 # are configuring for a version of Cygwin that exports the wrappers.
3568 if test x$host = x$target; then
3569 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3571 # Can't check presence of libc functions during cross-compile, so
3572 # we just have to assume we're building for an up-to-date target.
3573 gcc_ac_cygwin_dll_wrappers=yes
3575 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3576 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3577 [Define if you want to generate code by default that assumes that the
3578 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3581 cygwin* | pe | mingw32* | interix*)
3582 # Recent binutils allows the three-operand form of ".comm" on PE. This
3583 # definition is used unconditionally to initialise the default state of
3584 # the target option variable that governs usage of the feature.
3585 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3586 [2,19,52],,[.comm foo,1,32])
3587 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3588 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3589 [Define if your assembler supports specifying the alignment
3590 of objects allocated using the GAS .comm command.])
3591 # Used for DWARF 2 in PE
3592 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3593 gcc_cv_as_ix86_pe_secrel32,
3599 [if test x$gcc_cv_ld != x \
3600 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3601 gcc_cv_as_ix86_pe_secrel32=yes
3604 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3605 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3606 # Test if the assembler supports the extended form of the .section
3607 # directive that specifies section alignment. LTO support uses this,
3608 # but normally only after installation, so we warn but don't fail the
3609 # configure if LTO is enabled but the assembler does not support it.
3610 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3611 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3612 if test x$gcc_cv_as_section_has_align != xyes; then
3613 case ",$enable_languages," in
3615 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3619 # Test if the assembler supports the section flag 'e' for specifying
3620 # an excluded section.
3621 gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3625 AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3626 [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3627 [Define if your assembler supports specifying the section flag e.])
3631 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3632 gcc_cv_as_ix86_filds,,,
3633 [filds mem; fists mem],,
3634 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3635 [Define if your assembler uses filds and fists mnemonics.])])
3637 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3638 gcc_cv_as_ix86_fildq,,,
3639 [fildq mem; fistpq mem],,
3640 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3641 [Define if your assembler uses fildq and fistq mnemonics.])])
3643 gcc_GAS_CHECK_FEATURE([cmov syntax],
3644 gcc_cv_as_ix86_cmov_sun_syntax,,,
3645 [cmovl.l %edx, %eax],,
3646 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3647 [Define if your assembler supports the Sun syntax for cmov.])])
3649 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3650 gcc_cv_as_ix86_ffreep,,,
3652 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3653 [Define if your assembler supports the ffreep mnemonic.])])
3655 gcc_GAS_CHECK_FEATURE([.quad directive],
3656 gcc_cv_as_ix86_quad,,,
3658 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3659 [Define if your assembler supports the .quad directive.])])
3661 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3662 gcc_cv_as_ix86_sahf,,,
3665 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3666 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3668 gcc_GAS_CHECK_FEATURE([swap suffix],
3669 gcc_cv_as_ix86_swap,,,
3670 [movl.s %esp, %ebp],,
3671 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3672 [Define if your assembler supports the swap suffix.])])
3674 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3675 gcc_cv_as_ix86_diff_sect_delta,,,
3683 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3684 [Define if your assembler supports the subtraction of symbols in different sections.])])
3686 # These two are used unconditionally by i386.[ch]; it is to be defined
3687 # to 1 if the feature is present, 0 otherwise.
3688 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3689 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3695 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3696 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3697 [Define true if the assembler supports '.long foo@GOTOFF'.])
3699 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3700 gcc_cv_as_ix86_rep_lock_prefix,,,
3702 lock addl %edi, (%eax,%esi)
3703 lock orl $0, (%esp)],,
3704 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3705 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3707 gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
3708 gcc_cv_as_ix86_tlsgdplt,,,
3709 [call tls_gd@tlsgdplt],
3710 [if test x$gcc_cv_ld != x \
3711 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3712 gcc_cv_as_ix86_tlsgdplt=yes
3715 [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
3716 [Define if your assembler and linker support @tlsgdplt.])])
3718 gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
3719 gcc_cv_as_ix86_tlsldmplt,,,
3720 [call tls_ld@tlsldmplt],
3721 [if test x$gcc_cv_ld != x \
3722 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3723 gcc_cv_as_ix86_tlsldmplt=yes
3726 [AC_DEFINE(HAVE_AS_IX86_TLSLDMPLT, 1,
3727 [Define if your assembler and linker support @tlsldmplt.])])
3732 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3733 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3735 addl r15 = @ltoffx(x#), gp
3737 ld8.mov r16 = [[r15]], x#],,
3738 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3739 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3745 *-*-aix*) conftest_s=' .machine "pwr5"
3749 gcc_GAS_CHECK_FEATURE([.machine directive support],
3750 gcc_cv_as_machine_directive,,,
3751 [ .machine ppc7400])
3752 if test x$gcc_cv_as_machine_directive != xyes; then
3753 echo "*** This target requires an assembler supporting \".machine\"" >&2
3754 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3755 test x$build = x$target && exit 1
3759 *) conftest_s=' .machine power4
3764 gcc_GAS_CHECK_FEATURE([mfcr field support],
3765 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3767 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3768 [Define if your assembler supports mfcr field.])])
3771 *-*-aix*) conftest_s=' .machine "pwr5"
3774 *) conftest_s=' .machine power5
3779 gcc_GAS_CHECK_FEATURE([popcntb support],
3780 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3782 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3783 [Define if your assembler supports popcntb field.])])
3786 *-*-aix*) conftest_s=' .machine "pwr5x"
3789 *) conftest_s=' .machine power5
3794 gcc_GAS_CHECK_FEATURE([fp round support],
3795 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3797 [AC_DEFINE(HAVE_AS_FPRND, 1,
3798 [Define if your assembler supports fprnd.])])
3801 *-*-aix*) conftest_s=' .machine "pwr6"
3804 *) conftest_s=' .machine power6
3809 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3810 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3812 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3813 [Define if your assembler supports mffgpr and mftgpr.])])
3816 *-*-aix*) conftest_s=' .csect .text[[PR]]
3818 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3822 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3823 *) conftest_s=' .text
3825 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3828 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3829 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3831 [AC_DEFINE(HAVE_AS_REL16, 1,
3832 [Define if your assembler supports R_PPC_REL16 relocs.])])
3835 *-*-aix*) conftest_s=' .machine "pwr6"
3838 *) conftest_s=' .machine power6
3843 gcc_GAS_CHECK_FEATURE([compare bytes support],
3844 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3846 [AC_DEFINE(HAVE_AS_CMPB, 1,
3847 [Define if your assembler supports cmpb.])])
3850 *-*-aix*) conftest_s=' .machine "pwr6"
3853 *) conftest_s=' .machine power6
3858 gcc_GAS_CHECK_FEATURE([decimal float support],
3859 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3861 [AC_DEFINE(HAVE_AS_DFP, 1,
3862 [Define if your assembler supports DFP instructions.])])
3865 *-*-aix*) conftest_s=' .machine "pwr7"
3868 *) conftest_s=' .machine power7
3873 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3874 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3876 [AC_DEFINE(HAVE_AS_VSX, 1,
3877 [Define if your assembler supports VSX instructions.])])
3880 *-*-aix*) conftest_s=' .machine "pwr7"
3883 *) conftest_s=' .machine power7
3888 gcc_GAS_CHECK_FEATURE([popcntd support],
3889 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3891 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3892 [Define if your assembler supports POPCNTD instructions.])])
3895 *-*-aix*) conftest_s=' .csect .text[[PR]]
3897 *) conftest_s=' .text
3901 gcc_GAS_CHECK_FEATURE([lwsync support],
3902 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3904 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3905 [Define if your assembler supports LWSYNC instructions.])])
3908 *-*-aix*) conftest_s=' .machine "476"
3911 *) conftest_s=' .machine "476"
3916 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3917 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3919 [AC_DEFINE(HAVE_AS_DCI, 1,
3920 [Define if your assembler supports the DCI/ICI instructions.])])
3922 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3923 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3924 [.gnu_attribute 4,1],,
3925 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3926 [Define if your assembler supports .gnu_attribute.])])
3928 gcc_GAS_CHECK_FEATURE([tls marker support],
3929 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3930 [ bl __tls_get_addr(x@tlsgd)],,
3931 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3932 [Define if your assembler supports arg info for __tls_get_addr.])])
3936 gcc_GAS_CHECK_FEATURE([.ref support],
3937 gcc_cv_as_aix_ref, [2.21.0],,
3938 [ .csect stuff[[rw]]
3944 [AC_DEFINE(HAVE_AS_REF, 1,
3945 [Define if your assembler supports .ref])])
3951 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3952 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3953 [ lw $4,%gp_rel(foo)($4)],,
3954 [if test x$target_cpu_default = x
3955 then target_cpu_default=MASK_EXPLICIT_RELOCS
3956 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3958 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3959 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3960 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3961 [Define if the assembler understands -mno-shared.])])
3963 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3964 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3965 [.gnu_attribute 4,1],,
3966 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3967 [Define if your assembler supports .gnu_attribute.])])
3969 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3970 gcc_cv_as_mips_dtprelword, [2,18,0],,
3971 [.section .tdata,"awT",@progbits
3975 .dtprelword x+0x8000],,
3976 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3977 [Define if your assembler supports .dtprelword.])])
3979 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3980 gcc_cv_as_mips_dspr1_mult,,,
3990 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3991 [Define if your assembler supports DSPR1 mult.])])
3993 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3994 gcc_cv_as_ld_jalr_reloc=no
3995 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3996 if test $in_tree_ld = yes ; then
3997 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3998 && test $in_tree_ld_is_elf = yes; then
3999 gcc_cv_as_ld_jalr_reloc=yes
4001 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4002 echo ' .ent x' > conftest.s
4003 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
4004 echo ' ld $25,%call16(y)($28)' >> conftest.s
4005 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
4006 echo '1: jalr $25' >> conftest.s
4007 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
4008 echo '1: jalr $25' >> conftest.s
4009 echo ' .end x' >> conftest.s
4010 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4011 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4012 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4013 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4014 gcc_cv_as_ld_jalr_reloc=yes
4020 if test $gcc_cv_as_ld_jalr_reloc = yes; then
4021 if test x$target_cpu_default = x; then
4022 target_cpu_default=MASK_RELAX_PIC_CALLS
4024 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4027 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4029 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4030 [gcc_cv_ld_mips_personality_relaxation],
4031 [gcc_cv_ld_mips_personality_relaxation=no
4032 if test $in_tree_ld = yes ; then
4033 if test "$gcc_cv_gld_major_version" -eq 2 \
4034 -a "$gcc_cv_gld_minor_version" -ge 21 \
4035 -o "$gcc_cv_gld_major_version" -gt 2; then
4036 gcc_cv_ld_mips_personality_relaxation=yes
4038 elif test x$gcc_cv_as != x \
4039 -a x$gcc_cv_ld != x \
4040 -a x$gcc_cv_readelf != x ; then
4041 cat > conftest.s <<EOF
4043 .cfi_personality 0x80,indirect_ptr
4050 .section .data,"aw",@progbits
4054 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4055 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4056 if $gcc_cv_readelf -d conftest 2>&1 \
4057 | grep TEXTREL > /dev/null 2>&1; then
4059 elif $gcc_cv_readelf --relocs conftest 2>&1 \
4060 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4063 gcc_cv_ld_mips_personality_relaxation=yes
4067 rm -f conftest.s conftest.o conftest])
4068 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4069 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4070 [Define if your linker can relax absolute .eh_frame personality
4071 pointers into PC-relative form.])
4076 # Mips and HP-UX need the GNU assembler.
4077 # Linux on IA64 might be able to use the Intel assembler.
4080 mips*-*-* | *-*-hpux* )
4081 if test x$gas_flag = xyes \
4082 || test x"$host" != x"$build" \
4083 || test ! -x "$gcc_cv_as" \
4084 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4087 echo "*** This configuration requires the GNU assembler" >&2
4093 # ??? Not all targets support dwarf2 debug_line, even within a version
4094 # of gas. Moreover, we need to emit a valid instruction to trigger any
4095 # info to the output file. So, as supported targets are added to gas 2.11,
4096 # add some instruction here to (also) show we expect this might work.
4097 # ??? Once 2.11 is released, probably need to add first known working
4098 # version to the per-target configury.
4100 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
4101 | pa | rs6000 | score | sparc | spu | tilegx | tilepro | xstormy16 | xtensa)
4111 if test x"$insn" != x; then
4113 .file 1 \"conftest.s\"
4116 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4117 gcc_cv_as_dwarf2_debug_line,
4118 [elf,2,11,0],, [$conftest_s],
4119 [if test x$gcc_cv_objdump != x \
4120 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4121 | grep debug_line > /dev/null 2>&1; then
4122 gcc_cv_as_dwarf2_debug_line=yes
4125 # The .debug_line file table must be in the exact order that
4126 # we specified the files, since these indices are also used
4127 # by DW_AT_decl_file. Approximate this test by testing if
4128 # the assembler bitches if the same index is assigned twice.
4129 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4130 gcc_cv_as_dwarf2_file_buggy,,,
4134 if test $gcc_cv_as_dwarf2_debug_line = yes \
4135 && test $gcc_cv_as_dwarf2_file_buggy = no; then
4136 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4137 [Define if your assembler supports dwarf2 .file/.loc directives,
4138 and preserves file table indices exactly as given.])
4141 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4142 gcc_cv_as_gdwarf2_flag,
4143 [elf,2,11,0], [--gdwarf2], [$insn],,
4144 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4145 [Define if your assembler supports the --gdwarf2 option.])])
4147 gcc_GAS_CHECK_FEATURE([--gstabs option],
4148 gcc_cv_as_gstabs_flag,
4149 [elf,2,11,0], [--gstabs], [$insn],
4150 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
4151 # and warns about it, but still exits successfully. So check for
4153 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
4155 else gcc_cv_as_gstabs_flag=yes
4157 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4158 [Define if your assembler supports the --gstabs option.])])
4160 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4161 gcc_cv_as_debug_prefix_map_flag,
4162 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4163 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4164 [Define if your assembler supports the --debug-prefix-map option.])])
4167 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4170 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4171 [Define if your assembler supports .lcomm with an alignment field.])])
4173 AC_ARG_ENABLE(gnu-unique-object,
4174 [AS_HELP_STRING([--enable-gnu-unique-object],
4175 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4176 [case $enable_gnu_unique_object in
4178 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4179 Valid choices are 'yes' and 'no'.]) ;;
4181 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4183 [.type foo, @gnu_unique_object],,
4184 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4185 [[if test x$host = x$build -a x$host = x$target &&
4186 ldd --version 2>/dev/null &&
4187 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
4188 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
4189 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
4190 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
4191 if test "$glibcnum" -ge 2011 ; then
4192 enable_gnu_unique_object=yes
4195 if test x$enable_gnu_unique_object = xyes; then
4196 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4197 [Define if your assembler supports @gnu_unique_object.])
4200 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4201 [gcc_cv_as_line_zero],
4202 [gcc_cv_as_line_zero=no
4203 if test $in_tree_gas = yes; then
4204 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4205 elif test "x$gcc_cv_as" != x; then
4206 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4207 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4208 test "x`cat conftest.out`" = x
4210 gcc_cv_as_line_zero=yes
4212 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4213 cat conftest.s >&AS_MESSAGE_LOG_FD
4214 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4215 cat conftest.out >&AS_MESSAGE_LOG_FD
4217 rm -f conftest.o conftest.s conftest.out
4219 if test "x$gcc_cv_as_line_zero" = xyes; then
4220 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4221 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4224 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4225 gcc_cv_ld_eh_frame_hdr=no
4226 if test $in_tree_ld = yes ; then
4227 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4228 && test $in_tree_ld_is_elf = yes; then
4229 gcc_cv_ld_eh_frame_hdr=yes
4231 elif test x$gcc_cv_ld != x; then
4232 if echo "$ld_ver" | grep GNU > /dev/null; then
4233 # Check if linker supports --eh-frame-hdr option
4234 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4235 gcc_cv_ld_eh_frame_hdr=yes
4240 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4241 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4242 gcc_cv_ld_eh_frame_hdr=yes
4248 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4249 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4250 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4251 [Define if your linker supports .eh_frame_hdr.])
4253 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4255 AC_MSG_CHECKING(linker position independent executable support)
4257 if test $in_tree_ld = yes ; then
4258 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4259 && test $in_tree_ld_is_elf = yes; then
4262 elif test x$gcc_cv_ld != x; then
4263 # Check if linker supports -pie option
4264 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4268 if test x"$gcc_cv_ld_pie" = xyes; then
4269 AC_DEFINE(HAVE_LD_PIE, 1,
4270 [Define if your linker supports -pie option.])
4272 AC_MSG_RESULT($gcc_cv_ld_pie)
4274 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4275 gcc_cv_ld_eh_gc_sections=no
4276 if test $in_tree_ld = yes ; then
4277 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4278 && test $in_tree_ld_is_elf = yes; then
4279 gcc_cv_ld_eh_gc_sections=yes
4281 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4282 cat > conftest.s <<EOF
4285 .type _start, @function
4288 .size _start, .-_start
4289 .section .text.foo,"ax",@progbits
4290 .type foo, @function
4294 .section .gcc_except_table.foo,"a",@progbits
4297 .section .eh_frame,"a",@progbits
4300 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4301 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4302 | grep "gc-sections option ignored" > /dev/null; then
4303 gcc_cv_ld_eh_gc_sections=no
4304 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4305 | grep gcc_except_table > /dev/null; then
4306 gcc_cv_ld_eh_gc_sections=yes
4307 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4308 if test x$gcc_cv_as_comdat_group != xyes; then
4309 gcc_cv_ld_eh_gc_sections=no
4310 cat > conftest.s <<EOF
4313 .type _start, @function
4316 .size _start, .-_start
4317 .section .gnu.linkonce.t.foo,"ax",@progbits
4318 .type foo, @function
4322 .section .gcc_except_table.foo,"a",@progbits
4325 .section .eh_frame,"a",@progbits
4328 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4329 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4330 | grep "gc-sections option ignored" > /dev/null; then
4331 gcc_cv_ld_eh_gc_sections=no
4332 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4333 | grep gcc_except_table > /dev/null; then
4334 gcc_cv_ld_eh_gc_sections=yes
4340 rm -f conftest.s conftest.o conftest
4344 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4345 gcc_cv_ld_eh_gc_sections=no
4348 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4349 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4350 [Define if your linker supports garbage collection of
4351 sections in presence of EH frames.])
4353 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4355 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4356 gcc_cv_ld_eh_gc_sections_bug=no
4357 if test $in_tree_ld = yes ; then
4358 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4359 && test $in_tree_ld_is_elf = yes; then
4360 gcc_cv_ld_eh_gc_sections_bug=yes
4362 elif test x$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
4363 gcc_cv_ld_eh_gc_sections_bug=yes
4364 cat > conftest.s <<EOF
4367 .type _start, @function
4370 .size _start, .-_start
4371 .section .text.startup.foo,"ax",@progbits
4372 .type foo, @function
4376 .section .gcc_except_table.foo,"a",@progbits
4379 .section .eh_frame,"a",@progbits
4382 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4383 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4384 | grep "gc-sections option ignored" > /dev/null; then
4386 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4387 | grep gcc_except_table > /dev/null; then
4388 gcc_cv_ld_eh_gc_sections_bug=no
4391 rm -f conftest.s conftest.o conftest
4393 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4394 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4395 [Define if your linker has buggy garbage collection of
4396 sections support when .text.startup.foo like sections are used.])
4398 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4404 AC_CACHE_CHECK(linker --as-needed support,
4405 gcc_cv_ld_as_needed,
4406 [gcc_cv_ld_as_needed=no
4407 if test $in_tree_ld = yes ; then
4408 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4409 && test $in_tree_ld_is_elf = yes; then
4410 gcc_cv_ld_as_needed=yes
4412 elif test x$gcc_cv_ld != x; then
4413 # Check if linker supports --as-needed and --no-as-needed options
4414 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4415 gcc_cv_ld_as_needed=yes
4419 if test x"$gcc_cv_ld_as_needed" = xyes; then
4420 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4421 [Define if your linker supports --as-needed and --no-as-needed options.])
4424 case "$target:$tm_file" in
4425 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4426 AC_CACHE_CHECK(linker support for omitting dot symbols,
4427 gcc_cv_ld_no_dot_syms,
4428 [gcc_cv_ld_no_dot_syms=no
4429 if test $in_tree_ld = yes ; then
4430 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4431 gcc_cv_ld_no_dot_syms=yes
4433 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4434 cat > conftest1.s <<EOF
4438 cat > conftest2.s <<EOF
4439 .section ".opd","aw"
4444 .quad .LEfoo,.TOC.@tocbase,0
4450 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4451 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4452 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4453 gcc_cv_ld_no_dot_syms=yes
4455 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4458 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4459 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4460 [Define if your PowerPC64 linker only needs function descriptor syms.])
4463 AC_CACHE_CHECK(linker large toc support,
4464 gcc_cv_ld_large_toc,
4465 [gcc_cv_ld_large_toc=no
4466 if test $in_tree_ld = yes ; then
4467 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4468 gcc_cv_ld_large_toc=yes
4470 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4471 cat > conftest.s <<EOF
4472 .section ".tbss","awT",@nobits
4478 addis 9,13,ie0@got@tprel@ha
4479 ld 9,ie0@got@tprel@l(9)
4481 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4482 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4483 gcc_cv_ld_large_toc=yes
4485 rm -f conftest conftest.o conftest.s
4488 if test x"$gcc_cv_ld_large_toc" = xyes; then
4489 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4490 [Define if your PowerPC64 linker supports a large TOC.])
4495 AC_CACHE_CHECK(linker --build-id support,
4497 [gcc_cv_ld_buildid=no
4498 if test $in_tree_ld = yes ; then
4499 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4500 "$gcc_cv_gld_minor_version" -ge 18 -o \
4501 "$gcc_cv_gld_major_version" -gt 2 \
4502 && test $in_tree_ld_is_elf = yes; then
4503 gcc_cv_ld_buildid=yes
4505 elif test x$gcc_cv_ld != x; then
4506 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4507 gcc_cv_ld_buildid=yes
4510 if test x"$gcc_cv_ld_buildid" = xyes; then
4511 AC_DEFINE(HAVE_LD_BUILDID, 1,
4512 [Define if your linker supports --build-id.])
4515 AC_ARG_ENABLE(linker-build-id,
4516 [AS_HELP_STRING([--enable-linker-build-id],
4517 [compiler will always pass --build-id to linker])],
4519 enable_linker_build_id=no)
4521 if test x"$enable_linker_build_id" = xyes; then
4522 if test x"$gcc_cv_ld_buildid" = xyes; then
4523 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4524 [Define if gcc should always pass --build-id to linker.])
4526 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4530 # In binutils 2.21, GNU ld gained support for new emulations fully
4531 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4532 AC_CACHE_CHECK(linker *_sol2 emulation support,
4533 gcc_cv_ld_sol2_emulation,
4534 [gcc_cv_ld_sol2_emulation=no
4535 if test $in_tree_ld = yes ; then
4536 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4537 "$gcc_cv_gld_minor_version" -ge 21 -o \
4538 "$gcc_cv_gld_major_version" -gt 2 \
4539 && test $in_tree_ld_is_elf = yes; then
4540 gcc_cv_ld_sol2_emulation=yes
4542 elif test x$gcc_cv_ld != x; then
4543 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4544 grep _sol2 > /dev/null; then
4545 gcc_cv_ld_sol2_emulation=yes
4548 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4549 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4550 [Define if your linker supports the *_sol2 emulations.])
4553 AC_CACHE_CHECK(linker --sysroot support,
4555 [gcc_cv_ld_sysroot=no
4556 if test $in_tree_ld = yes ; then
4557 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4558 gcc_cv_ld_sysroot=yes
4560 elif test x$gcc_cv_ld != x; then
4561 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4562 gcc_cv_ld_sysroot=yes
4565 if test x"$gcc_cv_ld_sysroot" = xyes; then
4566 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4567 [Define if your linker supports --sysroot.])
4570 if test x$with_sysroot = x && test x$host = x$target \
4571 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4572 && test "$prefix" != "NONE"; then
4573 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4574 [Define to PREFIX/include if cpp should also search that directory.])
4577 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4578 if test "x$with_headers" != x; then
4579 target_header_dir=$with_headers
4580 elif test "x$with_sysroot" = x; then
4581 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4582 elif test "x$with_build_sysroot" != "x"; then
4583 target_header_dir="${with_build_sysroot}${native_system_header_dir}"
4584 elif test "x$with_sysroot" = xyes; then
4585 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
4587 target_header_dir="${with_sysroot}${native_system_header_dir}"
4590 target_header_dir=${native_system_header_dir}
4593 # Test for stack protector support in target C library.
4594 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4595 gcc_cv_libc_provides_ssp,
4596 [gcc_cv_libc_provides_ssp=no
4598 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4599 [# glibc 2.4 and later provides __stack_chk_fail and
4600 # either __stack_chk_guard, or TLS access to stack guard canary.
4601 if test -f $target_header_dir/features.h \
4602 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4603 $target_header_dir/features.h > /dev/null; then
4604 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4605 $target_header_dir/features.h > /dev/null; then
4606 gcc_cv_libc_provides_ssp=yes
4607 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4608 $target_header_dir/features.h > /dev/null \
4609 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4610 $target_header_dir/features.h > /dev/null; then
4611 gcc_cv_libc_provides_ssp=yes
4612 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4613 $target_header_dir/features.h > /dev/null && \
4614 test -f $target_header_dir/bits/uClibc_config.h && \
4615 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4616 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4617 gcc_cv_libc_provides_ssp=yes
4622 # Avoid complicated tests (see
4623 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4624 # simply assert that glibc does provide this, which is true for all
4625 # realistically usable GNU/Hurd configurations.
4626 gcc_cv_libc_provides_ssp=yes;;
4627 *-*-darwin* | *-*-freebsd*)
4628 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4629 [echo "no __stack_chk_fail on this target"])
4631 *) gcc_cv_libc_provides_ssp=no ;;
4634 if test x$gcc_cv_libc_provides_ssp = xyes; then
4635 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4636 [Define if your target C library provides stack protector support])
4639 # Test for <sys/sdt.h> on the target.
4640 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4641 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4643 if test -f $target_header_dir/sys/sdt.h; then
4645 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4646 [Define if your target C library provides sys/sdt.h])
4648 AC_MSG_RESULT($have_sys_sdt_h)
4650 # Check if TFmode long double should be used by default or not.
4651 # Some glibc targets used DFmode long double, but with glibc 2.4
4652 # and later they can use TFmode.
4654 powerpc*-*-linux* | \
4658 AC_ARG_WITH(long-double-128,
4659 [AS_HELP_STRING([--with-long-double-128],
4660 [use 128-bit long double by default])],
4661 gcc_cv_target_ldbl128="$with_long_double_128",
4662 [[gcc_cv_target_ldbl128=no
4663 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4664 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4665 && gcc_cv_target_ldbl128=yes
4669 if test x$gcc_cv_target_ldbl128 = xyes; then
4670 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4671 [Define if TFmode long double should be the default])
4674 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4675 gcc_cv_target_dl_iterate_phdr=unknown
4677 # Restrict to Solaris 11+. While most of the Solaris 11 linker changes
4678 # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
4679 # libdl there, both complicating its use and breaking compatibility
4680 # between Solaris 10 updates.
4681 *-*-solaris2.1[[1-9]]*)
4682 # <link.h> needs both a dl_iterate_phdr declaration and support for
4683 # compilation with largefile support.
4684 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4685 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4686 gcc_cv_target_dl_iterate_phdr=yes
4688 gcc_cv_target_dl_iterate_phdr=no
4692 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4693 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4694 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4695 [Define if your target C library provides the `dl_iterate_phdr' function.])
4697 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4699 # Find out what GC implementation we want, or may, use.
4701 [AS_HELP_STRING([--with-gc={page,zone}],
4702 [choose the garbage collection mechanism to use
4703 with the compiler])],
4710 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4713 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4718 echo "Using $GGC for garbage collection."
4720 # Libraries to use on the host. This will normally be set by the top
4721 # level Makefile. Here we simply capture the value for our Makefile.
4722 if test -z "${HOST_LIBS+set}"; then
4727 # Use the system's zlib library.
4729 zlibinc="-I\$(srcdir)/../zlib"
4730 AC_ARG_WITH(system-zlib,
4731 [AS_HELP_STRING([--with-system-zlib], [use installed libz])],
4738 dnl Very limited version of automake's enable-maintainer-mode
4740 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4741 dnl maintainer-mode is disabled by default
4742 AC_ARG_ENABLE(maintainer-mode,
4743 [AS_HELP_STRING([--enable-maintainer-mode],
4744 [enable make rules and dependencies not useful
4745 (and sometimes confusing) to the casual installer])],
4746 maintainer_mode=$enableval,
4749 AC_MSG_RESULT($maintainer_mode)
4751 if test "$maintainer_mode" = "yes"; then
4762 # Make empty files to contain the specs and options for each language.
4763 # Then add #include lines to for a compiler that has specs and/or options.
4769 # These (without "all_") are set in each config-lang.in.
4770 # `language' must be a single word so is spelled singularly.
4773 all_outputs='Makefile'
4774 # List of language makefile fragments.
4776 # Additional files for gengtype
4777 all_gtfiles="$target_gtfiles"
4779 # These are the languages that are set in --enable-languages,
4780 # and are available in the GCC tree.
4781 all_selected_languages=
4783 # Add the language fragments.
4784 # Languages are added via two mechanisms. Some information must be
4785 # recorded in makefile variables, these are defined in config-lang.in.
4786 # We accumulate them and plug them into the main Makefile.
4787 # The other mechanism is a set of hooks for each of the main targets
4788 # like `clean', `install', etc.
4790 language_hooks="Make-hooks"
4792 for lang in ${srcdir}/*/config-lang.in
4795 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4797 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4798 if test "x$lang_alias" = x
4800 echo "$lang doesn't set \$language." 1>&2
4803 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4804 subdirs="$subdirs $subdir"
4806 # $gcc_subdir is where the gcc integration files are to be found
4807 # for a language, both for internal compiler purposes (compiler
4808 # sources implementing front-end to GCC tree converters), and for
4809 # build infrastructure purposes (Make-lang.in, etc.)
4811 # This will be <subdir> (relative to $srcdir) if a line like
4812 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4813 # is found in <langdir>/config-lang.in, and will remain <langdir>
4816 # Except for the language alias (fetched above), the regular
4817 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4818 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4819 # only this and the language alias.
4821 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4822 if [ "$gcc_subdir" = "" ]; then
4823 gcc_subdir="$subdir"
4826 case ",$enable_languages," in
4828 all_selected_languages="$all_selected_languages $lang_alias"
4829 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4830 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4842 . ${srcdir}/$gcc_subdir/config-lang.in
4843 if test "x$language" = x
4845 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4850 case ",$enable_languages," in
4853 for i in $subdir_requires; do
4854 test -f "${srcdir}/$i/config-lang.in" && continue
4862 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4863 if test -f $srcdir/$gcc_subdir/lang.opt; then
4864 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4865 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4867 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4868 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4870 all_languages="$all_languages $language"
4871 all_compilers="$all_compilers $compilers"
4872 all_outputs="$all_outputs $outputs"
4873 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4874 case ",$enable_languages," in
4876 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4878 AC_SUBST(enable_lto)
4884 # Pick up gtfiles for c
4886 . ${srcdir}/c-config-lang.in
4887 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4890 for language in $all_selected_languages
4892 check_languages="$check_languages check-$language"
4895 # We link each language in with a set of hooks, reached indirectly via
4896 # lang.${target}. Only do so for selected languages.
4900 target_list="all.cross start.encap rest.encap tags \
4901 install-common install-man install-info install-pdf install-html dvi \
4902 pdf html uninstall info man srcextra srcman srcinfo \
4903 mostlyclean clean distclean maintainer-clean install-plugin"
4905 for t in $target_list
4908 for lang in $all_selected_languages
4912 echo "lang.$t: $x" >> Make-hooks
4916 # Option include files
4919 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4920 option_includes="option-includes.mk"
4921 AC_SUBST_FILE(option_includes)
4929 echo "dir ." > .gdbinit
4930 echo "dir ${srcdir}" >> .gdbinit
4931 if test x$gdb_needs_out_file_path = xyes
4933 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4935 if test "x$subdirs" != x; then
4938 echo "dir ${srcdir}/$s" >> .gdbinit
4941 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4943 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4944 AC_SUBST(gcc_tooldir)
4947 # Find a directory in which to install a shared libgcc.
4949 AC_ARG_ENABLE(version-specific-runtime-libs,
4950 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
4951 [specify that runtime libraries should be
4952 installed in a compiler-specific directory])])
4954 # Substitute configuration variables
4957 AC_SUBST(all_compilers)
4958 AC_SUBST(all_gtfiles)
4959 AC_SUBST(all_lang_makefrags)
4960 AC_SUBST(all_languages)
4961 AC_SUBST(all_selected_languages)
4962 AC_SUBST(build_exeext)
4963 AC_SUBST(build_install_headers_dir)
4964 AC_SUBST(build_xm_file_list)
4965 AC_SUBST(build_xm_include_list)
4966 AC_SUBST(build_xm_defines)
4967 AC_SUBST(build_file_translate)
4968 AC_SUBST(check_languages)
4969 AC_SUBST(cpp_install_dir)
4970 AC_SUBST(xmake_file)
4971 AC_SUBST(tmake_file)
4972 AC_SUBST(TM_ENDIAN_CONFIG)
4973 AC_SUBST(TM_MULTILIB_CONFIG)
4974 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4975 AC_SUBST(extra_gcc_objs)
4976 AC_SUBST(user_headers_inc_next_pre)
4977 AC_SUBST(user_headers_inc_next_post)
4978 AC_SUBST(extra_headers_list)
4979 AC_SUBST(extra_objs)
4980 AC_SUBST(extra_passes)
4981 AC_SUBST(extra_programs)
4982 AC_SUBST(float_h_file)
4983 AC_SUBST(gcc_config_arguments)
4984 AC_SUBST(gcc_gxx_include_dir)
4985 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
4986 AC_SUBST(host_exeext)
4987 AC_SUBST(host_xm_file_list)
4988 AC_SUBST(host_xm_include_list)
4989 AC_SUBST(host_xm_defines)
4990 AC_SUBST(out_host_hook_obj)
4992 AC_SUBST(lang_opt_files)
4993 AC_SUBST(lang_specs_files)
4994 AC_SUBST(lang_tree_files)
4995 AC_SUBST(local_prefix)
4997 AC_SUBST(objc_boehm_gc)
4999 AC_SUBST(out_object_file)
5000 AC_SUBST(common_out_file)
5001 AC_SUBST(common_out_object_file)
5002 AC_SUBST(tm_file_list)
5003 AC_SUBST(tm_include_list)
5004 AC_SUBST(tm_defines)
5005 AC_SUBST(tm_p_file_list)
5006 AC_SUBST(tm_p_include_list)
5007 AC_SUBST(xm_file_list)
5008 AC_SUBST(xm_include_list)
5009 AC_SUBST(xm_defines)
5010 AC_SUBST(use_gcc_stdint)
5011 AC_SUBST(c_target_objs)
5012 AC_SUBST(cxx_target_objs)
5013 AC_SUBST(fortran_target_objs)
5014 AC_SUBST(target_cpu_default)
5016 AC_SUBST_FILE(language_hooks)
5019 if test x${build} = x${host} ; then
5020 if test x${host} = x${target} ; then
5021 echo "Links are now set up to build a native compiler for ${target}." 1>&2
5023 echo "Links are now set up to build a cross-compiler" 1>&2
5024 echo " from ${host} to ${target}." 1>&2
5027 if test x${host} = x${target} ; then
5028 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5029 echo " for ${target}." 1>&2
5031 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5032 echo " from ${host} to ${target}." 1>&2
5036 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5037 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5039 AC_ARG_VAR(PPLLIBS,[How to link PPL])
5040 AC_ARG_VAR(PPLINC,[How to find PPL include files])
5042 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
5043 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
5044 if test "x${CLOOGLIBS}" != "x" ; then
5045 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
5048 # Check for plugin support
5049 AC_ARG_ENABLE(plugin,
5050 [AS_HELP_STRING([--enable-plugin], [enable plugin support])],
5051 enable_plugin=$enableval,
5052 enable_plugin=yes; default_plugin=yes)
5058 if test x$build = x$host; then
5059 export_sym_check="nm${exeext} -g"
5060 elif test x$host = x$target; then
5061 export_sym_check="$gcc_cv_nm -g"
5067 if test x$build = x$host; then
5068 export_sym_check="objdump${exeext} -T"
5069 elif test x$host = x$target; then
5070 export_sym_check="$gcc_cv_objdump -T"
5077 if test x"$enable_plugin" = x"yes"; then
5079 AC_MSG_CHECKING([for exported symbols])
5080 if test "x$export_sym_check" != x; then
5081 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
5082 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
5083 if $export_sym_check conftest | grep foobar > /dev/null; then
5084 : # No need to use a flag
5085 AC_MSG_RESULT([yes])
5087 AC_MSG_RESULT([yes])
5088 AC_MSG_CHECKING([for -rdynamic])
5089 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
5090 if $export_sym_check conftest | grep foobar > /dev/null; then
5092 pluginlibs="-rdynamic"
5097 AC_MSG_RESULT([$plugin_rdynamic])
5100 AC_MSG_RESULT([unable to check])
5105 AC_SEARCH_LIBS([dlopen], [dl])
5106 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
5107 pluginlibs="$pluginlibs -ldl"
5111 # Check that we can build shared objects with -fPIC -shared
5112 saved_LDFLAGS="$LDFLAGS"
5113 saved_CFLAGS="$CFLAGS"
5116 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
5117 CFLAGS="$CFLAGS -fPIC"
5118 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
5121 CFLAGS="$CFLAGS -fPIC"
5122 LDFLAGS="$LDFLAGS -fPIC -shared"
5125 AC_MSG_CHECKING([for -fPIC -shared])
5127 [extern int X;],[return X == 0;],
5128 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
5129 [AC_MSG_RESULT([no]); have_pic_shared=no])
5130 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
5134 LDFLAGS="$saved_LDFLAGS"
5135 CFLAGS="$saved_CFLAGS"
5137 # If plugin support had been requested but not available, fail.
5138 if test x"$enable_plugin" = x"no" ; then
5139 if test x"$default_plugin" != x"yes"; then
5141 Building GCC with plugin support requires a host that supports
5142 -fPIC, -shared, -ldl and -rdynamic.])
5147 AC_SUBST(pluginlibs)
5148 AC_SUBST(enable_plugin)
5149 if test x"$enable_plugin" = x"yes"; then
5150 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5154 AC_ARG_ENABLE(libquadmath-support,
5155 [AS_HELP_STRING([--disable-libquadmath-support],
5156 [disable libquadmath support for Fortran])],
5157 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5158 ENABLE_LIBQUADMATH_SUPPORT=yes)
5159 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5160 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5161 [Define to 1 to enable libquadmath support])
5165 # Specify what hash style to use by default.
5166 AC_ARG_WITH([linker-hash-style],
5167 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5168 [specify the linker hash style])],
5169 [case x"$withval" in
5171 LINKER_HASH_STYLE=sysv
5174 LINKER_HASH_STYLE=gnu
5177 LINKER_HASH_STYLE=both
5180 AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5183 [LINKER_HASH_STYLE=''])
5184 if test x"${LINKER_HASH_STYLE}" != x; then
5185 AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5186 [The linker hash style])
5189 # Configure the subdirectories
5190 # AC_CONFIG_SUBDIRS($subdirs)
5192 # Create the Makefile
5193 # and configure language subdirectories
5194 AC_CONFIG_FILES($all_outputs)
5196 AC_CONFIG_COMMANDS([default],
5198 case ${CONFIG_HEADERS} in
5199 *auto-host.h:config.in*)
5202 # Make sure all the subdirs exist.
5203 for d in $subdirs doc build common c-family
5205 test -d $d || mkdir $d
5208 [subdirs='$subdirs'])