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 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 "$gcc_exec_prefix_setting" != "ok"; then
96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
97 *** building gcc. Please change the environment variable
98 *** and run configure again.])
105 # Specify the local prefix
107 AC_ARG_WITH(local-prefix,
108 [ --with-local-prefix=DIR specifies directory to put local include],
109 [case "${withval}" in
110 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
112 *) local_prefix=$with_local_prefix ;;
115 # Default local prefix if it is empty
116 if test x$local_prefix = x; then
117 local_prefix=/usr/local
120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
121 # passed in by the toplevel make and thus we'd get different behavior
122 # depending on where we built the sources.
124 # Specify the g++ header file directory
125 AC_ARG_WITH(gxx-include-dir,
126 [ --with-gxx-include-dir=DIR
127 specifies directory to put g++ header files],
128 [case "${withval}" in
129 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
131 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='include/c++/$(version)'
140 if test x$host != x$target; then
141 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
143 gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
209 AC_MSG_CHECKING([whether a default linker was specified])
210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
211 if test x"$gnu_ld_flag" = x"no"; then
212 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
214 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
220 # With demangler in GNU ld
221 AC_ARG_WITH(demangler-in-ld,
222 [ --with-demangler-in-ld try to use demangler in GNU ld.],
223 demangler_in_ld="$with_demangler_in_ld",
226 # ----------------------
227 # Find default assembler
228 # ----------------------
232 [ --with-gnu-as arrange to work with GNU as],
233 gas_flag="$with_gnu_as",
237 [ --with-as arrange to use the specified as (full pathname)],
238 DEFAULT_ASSEMBLER="$with_as")
239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
240 if test ! -x "$DEFAULT_ASSEMBLER"; then
241 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
242 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
245 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
246 [Define to enable the use of a default assembler.])
249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
252 AC_MSG_CHECKING([whether a default assembler was specified])
253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
254 if test x"$gas_flag" = x"no"; then
255 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
257 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
267 # If a non-executable a.out is present (e.g. created by GNU as above even if
268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
269 # file, even when creating an executable, so an execution test fails.
270 # Remove possible default executable files to avoid this.
272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
273 # Autoconf includes it.
274 rm -f a.out a.exe b.out
276 # Find the native compiler
280 ACX_PROG_GNAT([-I"$srcdir"/ada])
282 # autoconf is lame and doesn't give us any substitution variable for this.
283 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
284 NO_MINUS_C_MINUS_O=yes
286 OUTPUT_OPTION='-o $@'
288 AC_SUBST(NO_MINUS_C_MINUS_O)
289 AC_SUBST(OUTPUT_OPTION)
291 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
292 # optimizations to be activated explicitly by the toplevel.
295 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
299 # -------------------------
300 # Check C compiler features
301 # -------------------------
303 AC_USE_SYSTEM_EXTENSIONS
309 # sizeof(char) is 1 by definition.
310 AC_CHECK_SIZEOF(void *)
311 AC_CHECK_SIZEOF(short)
313 AC_CHECK_SIZEOF(long)
314 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
315 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
318 # ---------------------
319 # Warnings and checking
320 # ---------------------
322 # Check $CC warning features (if it's GCC).
323 # We want to use -pedantic, but we don't want warnings about
327 # So, we only use -pedantic if we can disable those warnings.
329 ACX_PROG_CC_WARNING_OPTS(
330 m4_quote(m4_do([-W -Wall -Wwrite-strings -Wcast-qual])), [loose_warn])
331 ACX_PROG_CC_WARNING_OPTS(
332 m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
334 ACX_PROG_CC_WARNING_OPTS(
335 m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
336 ACX_PROG_CC_WARNING_OPTS(
337 m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
338 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
339 m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
340 [-Wno-overlength-strings])), [strict_warn])
341 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
343 # The above macros do nothing if the compiler is not GCC. However, the
344 # Makefile has more goo to add other flags, so these variables are used
345 # to enable warnings only for GCC.
348 if test "x$GCC" = "xyes"; then
349 warn_cflags='$(GCC_WARN_CFLAGS)'
350 warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
352 AC_SUBST(warn_cflags)
353 AC_SUBST(warn_cxxflags)
355 # Enable expensive internal checks
357 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
361 AC_ARG_ENABLE(checking,
362 [ --enable-checking[=LIST]
363 enable expensive run-time checks. With LIST,
364 enable only specific categories of checks.
365 Categories are: yes,no,all,none,release.
366 Flags are: assert,df,fold,gc,gcac,gimple,misc,
367 rtlflag,rtl,runtime,tree,valgrind,types.],
368 [ac_checking_flags="${enableval}"],[
369 # Determine the default checks.
370 if test x$is_release = x ; then
371 ac_checking_flags=yes
373 ac_checking_flags=release
375 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
376 for check in release $ac_checking_flags
379 # these set all the flags to specific states
380 yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
381 ac_fold_checking= ; ac_gc_checking=1 ;
382 ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
383 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
384 ac_tree_checking=1 ; ac_valgrind_checking= ;
385 ac_types_checking=1 ;;
386 no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
387 ac_fold_checking= ; ac_gc_checking= ;
388 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
389 ac_rtlflag_checking= ; ac_runtime_checking= ;
390 ac_tree_checking= ; ac_valgrind_checking= ;
391 ac_types_checking= ;;
392 all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
393 ac_fold_checking=1 ; ac_gc_checking=1 ;
394 ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
395 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
396 ac_tree_checking=1 ; ac_valgrind_checking= ;
397 ac_types_checking=1 ;;
398 release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
399 ac_fold_checking= ; ac_gc_checking= ;
400 ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
401 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
402 ac_tree_checking= ; ac_valgrind_checking= ;
403 ac_types_checking= ;;
404 # these enable particular checks
405 assert) ac_assert_checking=1 ;;
406 df) ac_df_checking=1 ;;
407 fold) ac_fold_checking=1 ;;
408 gc) ac_gc_checking=1 ;;
409 gcac) ac_gc_always_collect=1 ;;
410 gimple) ac_gimple_checking=1 ;;
411 misc) ac_checking=1 ;;
412 rtl) ac_rtl_checking=1 ;;
413 rtlflag) ac_rtlflag_checking=1 ;;
414 runtime) ac_runtime_checking=1 ;;
415 tree) ac_tree_checking=1 ;;
416 types) ac_types_checking=1 ;;
417 valgrind) ac_valgrind_checking=1 ;;
418 *) AC_MSG_ERROR(unknown check category $check) ;;
424 if test x$ac_checking != x ; then
425 AC_DEFINE(ENABLE_CHECKING, 1,
426 [Define if you want more run-time sanity checks. This one gets a grab
427 bag of miscellaneous but relatively cheap checks.])
428 nocommon_flag=-fno-common
430 AC_SUBST(nocommon_flag)
431 if test x$ac_df_checking != x ; then
432 AC_DEFINE(ENABLE_DF_CHECKING, 1,
433 [Define if you want more run-time sanity checks for dataflow.])
435 if test x$ac_assert_checking != x ; then
436 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
437 [Define if you want assertions enabled. This is a cheap check.])
439 if test x$ac_gimple_checking != x ; then
440 AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
441 [Define if you want operations on GIMPLE (the basic data structure of
442 the high-level optimizers) to be checked for dynamic type safety at
443 runtime. This is moderately expensive.])
445 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
446 if test x$ac_runtime_checking != x ; then
447 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
448 [Define if you want runtime assertions enabled. This is a cheap check.])
450 if test x$ac_tree_checking != x ; then
451 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
452 [Define if you want all operations on trees (the basic data
453 structure of the front ends) to be checked for dynamic type safety
454 at runtime. This is moderately expensive. The tree browser debugging
455 routines will also be enabled by this option.
457 TREEBROWSER=tree-browser.o
459 if test x$ac_types_checking != x ; then
460 AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
461 [Define if you want all gimple types to be verified after gimplifiation.
465 AC_SUBST(TREEBROWSER)
466 if test x$ac_rtl_checking != x ; then
467 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
468 [Define if you want all operations on RTL (the basic data structure
469 of the optimizer and back end) to be checked for dynamic type safety
470 at runtime. This is quite expensive.])
472 if test x$ac_rtlflag_checking != x ; then
473 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
474 [Define if you want RTL flag accesses to be checked against the RTL
475 codes that are supported for each access macro. This is relatively
478 if test x$ac_gc_checking != x ; then
479 AC_DEFINE(ENABLE_GC_CHECKING, 1,
480 [Define if you want the garbage collector to do object poisoning and
481 other memory allocation checks. This is quite expensive.])
483 if test x$ac_gc_always_collect != x ; then
484 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
485 [Define if you want the garbage collector to operate in maximally
486 paranoid mode, validating the entire heap and collecting garbage at
487 every opportunity. This is extremely expensive.])
489 if test x$ac_fold_checking != x ; then
490 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
491 [Define if you want fold checked that it never destructs its argument.
492 This is quite expensive.])
494 valgrind_path_defines=
497 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
498 dnl # an if statement. This was the source of very frustrating bugs
499 dnl # in converting to autoconf 2.5x!
500 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
502 if test x$ac_valgrind_checking != x ; then
503 # It is certainly possible that there's valgrind but no valgrind.h.
504 # GCC relies on making annotations so we must have both.
505 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
506 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
507 [[#include <valgrind/memcheck.h>
508 #ifndef VALGRIND_DISCARD
509 #error VALGRIND_DISCARD not defined
511 [gcc_cv_header_valgrind_memcheck_h=yes],
512 [gcc_cv_header_valgrind_memcheck_h=no])
513 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
514 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
515 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
516 [[#include <memcheck.h>
517 #ifndef VALGRIND_DISCARD
518 #error VALGRIND_DISCARD not defined
520 [gcc_cv_header_memcheck_h=yes],
521 [gcc_cv_header_memcheck_h=no])
522 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
523 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
524 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
525 if test "x$valgrind_path" = "x" \
526 || (test $have_valgrind_h = no \
527 && test $gcc_cv_header_memcheck_h = no \
528 && test $gcc_cv_header_valgrind_memcheck_h = no); then
529 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
531 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
532 valgrind_command="$valgrind_path -q"
533 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
534 [Define if you want to run subprograms and generated programs
535 through valgrind (a memory checker). This is extremely expensive.])
536 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
537 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
538 [Define if valgrind's valgrind/memcheck.h header is installed.])
540 if test $gcc_cv_header_memcheck_h = yes; then
541 AC_DEFINE(HAVE_MEMCHECK_H, 1,
542 [Define if valgrind's memcheck.h header is installed.])
545 AC_SUBST(valgrind_path_defines)
546 AC_SUBST(valgrind_command)
548 # Enable code coverage collection
549 AC_ARG_ENABLE(coverage,
550 [ --enable-coverage[=LEVEL]
551 enable compiler's code coverage collection.
552 Use to measure compiler performance and locate
553 unused parts of the compiler. With LEVEL, specify
554 optimization. Values are opt, noopt,
556 [case "${enableval}" in
558 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
561 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
564 # a.k.a. --disable-coverage
568 AC_MSG_ERROR(unknown coverage setting $enableval)
572 AC_SUBST(coverage_flags)
574 AC_ARG_ENABLE(gather-detailed-mem-stats,
575 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
576 [enable_gather_detailed_mem_stats=no])
577 if test x$enable_gather_detailed_mem_stats = xyes ; then
578 AC_DEFINE(GATHER_STATISTICS, 1,
579 [Define to enable detailed memory allocation stats gathering.])
582 # -------------------------------
583 # Miscenalleous configure options
584 # -------------------------------
586 # See if we are building gcc with C++.
587 AC_ARG_ENABLE(build-with-cxx,
588 [ --enable-build-with-cxx build with C++ compiler instead of C compiler],
589 ENABLE_BUILD_WITH_CXX=$enableval,
590 ENABLE_BUILD_WITH_CXX=no)
591 AC_SUBST(ENABLE_BUILD_WITH_CXX)
592 if test "$ENABLE_BUILD_WITH_CXX" = "yes"; then
593 AC_DEFINE(ENABLE_BUILD_WITH_CXX, 1,
594 [Define if building with C++.])
599 [ --with-stabs arrange to use stabs instead of host debug format],
603 # Determine whether or not multilibs are enabled.
604 AC_ARG_ENABLE(multilib,
605 [ --enable-multilib enable library support for multiple ABIs],
606 [], [enable_multilib=yes])
607 AC_SUBST(enable_multilib)
609 # Enable __cxa_atexit for C++.
610 AC_ARG_ENABLE(__cxa_atexit,
611 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
614 # Enable C extension for decimal float if target supports it.
615 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
617 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
618 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
619 [Define to 1 to enable decimal float extension to C.])
621 # Use default_decimal_float for dependency.
622 enable_decimal_float=$default_decimal_float
624 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
625 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
626 [Define to 1 to specify that we are using the BID decimal floating
627 point format instead of DPD])
629 # Enable C extension for fixed-point arithmetic.
630 AC_ARG_ENABLE(fixed-point,
631 [ --enable-fixed-point enable fixed-point arithmetic extension to C],
639 AC_MSG_WARN([fixed-point is not supported on IRIX, ignored])
640 enable_fixed_point=no
643 enable_fixed_point=yes
648 AC_MSG_WARN([fixed-point is not supported for this target, ignored])
649 enable_fixed_point=no
653 AC_SUBST(enable_fixed_point)
655 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
656 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
657 [Define to 1 to enable fixed-point arithmetic extension to C.])
660 # Pass with no value to take the default
661 # Pass with a value to specify a thread package
662 AC_ARG_ENABLE(threads,
663 [ --enable-threads enable thread usage for target GCC
664 --enable-threads=LIB use LIB thread package for target GCC],,
668 [ --enable-tls enable or disable generation of tls code
669 overriding the assembler check for tls support],
673 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
674 Valid choices are 'yes' and 'no'.]) ;;
678 AC_ARG_ENABLE(objc-gc,
679 [ --enable-objc-gc enable the use of Boehm's garbage collector with
680 the GNU Objective-C runtime],
681 if test x$enable_objc_gc = xno; then
689 [ --with-dwarf2 force the default debug format to be DWARF 2],
690 dwarf2="$with_dwarf2",
693 AC_ARG_ENABLE(shared,
694 [ --disable-shared don't provide a shared libgcc],
696 case $enable_shared in
700 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
701 for pkg in $enableval; do
702 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
709 ], [enable_shared=yes])
710 AC_SUBST(enable_shared)
712 AC_ARG_WITH(build-sysroot,
713 [ --with-build-sysroot=sysroot
714 use sysroot as the system root during the build])
717 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
719 case ${with_sysroot} in
720 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
721 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
724 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
725 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
727 if test "x$prefix" = xNONE; then
728 test_prefix=/usr/local
732 if test "x$exec_prefix" = xNONE; then
733 test_exec_prefix=$test_prefix
735 test_exec_prefix=$exec_prefix
737 case ${TARGET_SYSTEM_ROOT} in
738 "${test_prefix}"|"${test_prefix}/"*|\
739 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
740 '${prefix}'|'${prefix}/'*|\
741 '${exec_prefix}'|'${exec_prefix}/'*)
742 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
743 TARGET_SYSTEM_ROOT_DEFINE="$t"
748 TARGET_SYSTEM_ROOT_DEFINE=
749 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
751 AC_SUBST(TARGET_SYSTEM_ROOT)
752 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
753 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
756 [AS_HELP_STRING([--with-specs=SPECS],
757 [add SPECS to driver command-line processing])],
758 [CONFIGURE_SPECS=$withval],
761 AC_SUBST(CONFIGURE_SPECS)
763 ACX_PKGVERSION([GCC])
764 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
766 # Sanity check enable_languages in case someone does not run the toplevel
767 # configure # script.
768 AC_ARG_ENABLE(languages,
769 [ --enable-languages=LIST specify which front-ends to build],
770 [case ,${enable_languages}, in
772 # go safe -- we cannot be much sure without the toplevel
774 # analysis of which target libs are present and usable
778 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
783 enable_languages=c,${enable_languages}
786 [enable_languages=c])
788 AC_ARG_WITH(multilib-list,
789 [ --with-multilib-list Select multilibs (SH only)],
791 with_multilib_list=default)
793 # -------------------------
794 # Checks for other programs
795 # -------------------------
799 # Find some useful tools
801 # We need awk to create options.c and options.h.
802 # Bail out if it's missing.
804 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
812 # By default, the Darwin ranlib will not treat common symbols as
813 # definitions when building the archive table of contents. Other
814 # ranlibs do that; pass an option to the Darwin ranlib that makes
815 # it behave similarly.
821 AC_SUBST(ranlib_flags)
825 # See if cmp has --ignore-initial.
826 gcc_AC_PROG_CMP_IGNORE_INITIAL
828 # See if we have the mktemp command.
829 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
831 # See if makeinfo has been installed and is modern enough
832 # that we can use it.
833 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
834 [GNU texinfo.* \([0-9][0-9.]*\)],
835 [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
836 if test $gcc_cv_prog_makeinfo_modern = no; then
838 *** Makeinfo is missing or too old.
839 *** Info documentation will not be built.])
846 # Is pod2man recent enough to regenerate manpages?
847 AC_MSG_CHECKING([for recent Pod::Man])
848 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
850 GENERATED_MANPAGES=generated-manpages
855 AC_SUBST(GENERATED_MANPAGES)
857 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
860 dnl Don't use AC_PROG_LEX; we insist on flex.
861 dnl LEXLIB is not useful in gcc.
862 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
865 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
867 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
868 # check for build == host before using them.
871 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
872 && test -d ../binutils ; then
873 NM='${objdir}/../binutils/nm-new'
875 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
879 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
880 && test -d ../binutils ; then
881 AR='${objdir}/../binutils/ar'
883 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
887 # --------------------
888 # Checks for C headers
889 # --------------------
891 # Need to reject headers which give warnings, so that the -Werror bootstrap
892 # works later. *sigh* This needs to come before all header checks.
899 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
900 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
901 sys/resource.h sys/param.h sys/times.h sys/stat.h \
902 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
904 # Check for thread headers.
905 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
906 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
908 # These tests can't be done till we know if we have limits.h.
912 # ----------------------
913 # Checks for C++ headers
914 # ----------------------
916 dnl Autoconf will give an error in the configure script if there is no
917 dnl C++ preprocessor. Hack to prevent that.
918 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
920 m4_popdef([AC_MSG_ERROR])[]dnl
924 AC_CHECK_HEADERS(unordered_map)
925 AC_CHECK_HEADERS(tr1/unordered_map)
926 AC_CHECK_HEADERS(ext/hash_map)
935 # These libraries may be used by collect2.
936 # We may need a special search path to get them linked.
937 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
939 for libs in '' -lld -lmld \
940 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
941 '-L/usr/lib/cmplrs/cc3.11 -lmld'
944 AC_TRY_LINK_FUNC(ldopen,
945 [gcc_cv_collect2_libs="$libs"; break])
948 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
949 case $gcc_cv_collect2_libs in
951 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
953 AC_SUBST(COLLECT2_LIBS)
955 # When building Ada code on Alpha, we need exc_resume which is usually in
956 # -lexc. So test for it.
959 AC_SEARCH_LIBS(exc_resume, exc)
962 AC_SUBST(GNAT_LIBEXC)
964 # Some systems put ldexp and frexp in libm instead of libc; assume
965 # they're both in the same place. jcf-dump needs them.
968 AC_SEARCH_LIBS(ldexp, m)
973 # Use <inttypes.h> only if it exists,
974 # doesn't clash with <sys/types.h>, and declares intmax_t.
975 AC_MSG_CHECKING(for inttypes.h)
976 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
977 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
978 [[#include <sys/types.h>
979 #include <inttypes.h>]],
980 [[intmax_t i = -1;]])],
981 [gcc_cv_header_inttypes_h=yes],
982 [gcc_cv_header_inttypes_h=no])])
983 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
984 if test $gcc_cv_header_inttypes_h = yes; then
985 AC_DEFINE(HAVE_INTTYPES_H, 1,
986 [Define if you have a working <inttypes.h> header file.])
989 dnl Disabled until we have a complete test for buggy enum bitfields.
990 dnl gcc_AC_C_ENUM_BF_UNSIGNED
992 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
993 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
994 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
995 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
996 putchar_unlocked putc_unlocked)
997 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
998 sysconf strsignal getrusage nl_langinfo \
999 gettimeofday mbstowcs wcswidth mmap setlocale \
1002 if test x$ac_cv_func_mbstowcs = xyes; then
1003 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1004 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1010 [gcc_cv_func_mbstowcs_works=yes],
1011 [gcc_cv_func_mbstowcs_works=no],
1012 [gcc_cv_func_mbstowcs_works=yes])])
1013 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1014 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1015 [Define this macro if mbstowcs does not crash when its
1016 first argument is NULL.])
1020 AC_CHECK_TYPE(ssize_t, int)
1021 AC_CHECK_TYPE(caddr_t, char *)
1023 gcc_AC_FUNC_MMAP_BLACKLIST
1027 # Under VMS, vfork works very differently than on Unix. The standard test
1028 # won't work, and it isn't easily adaptable. It makes more sense to
1030 ac_cv_func_vfork_works=yes
1036 # Until we have in-tree GNU iconv:
1038 AC_SUBST(LIBICONV_DEP)
1044 # We will need to find libiberty.h and ansidecl.h
1045 saved_CFLAGS="$CFLAGS"
1046 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1047 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1048 strsignal strstr strverscmp \
1049 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1050 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1051 #include "ansidecl.h"
1052 #include "system.h"])
1054 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1055 #include "ansidecl.h"
1057 #ifdef HAVE_SYS_RESOURCE_H
1058 #include <sys/resource.h>
1062 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1063 #include "ansidecl.h"
1065 #ifdef HAVE_SYS_RESOURCE_H
1066 #include <sys/resource.h>
1068 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1069 [Define to `long' if <sys/resource.h> doesn't define.])])
1071 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1072 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1073 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1074 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1075 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1076 #include "ansidecl.h"
1085 gcc_AC_CHECK_DECLS(times, , ,[
1086 #include "ansidecl.h"
1088 #ifdef HAVE_SYS_TIMES_H
1089 #include <sys/times.h>
1093 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1094 #include "ansidecl.h"
1099 # More time-related stuff.
1100 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1101 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1102 #include "ansidecl.h"
1104 #ifdef HAVE_SYS_TIMES_H
1105 #include <sys/times.h>
1107 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1108 if test $ac_cv_struct_tms = yes; then
1109 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1110 [Define if <sys/times.h> defines struct tms.])
1113 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1114 # revisit after autoconf 2.50.
1115 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1116 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1117 #include "ansidecl.h"
1119 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1120 if test $gcc_cv_type_clock_t = yes; then
1121 AC_DEFINE(HAVE_CLOCK_T, 1,
1122 [Define if <time.h> defines clock_t.])
1125 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1126 CFLAGS="$saved_CFLAGS"
1128 gcc_AC_INITFINI_ARRAY
1130 # mkdir takes a single argument on some systems.
1131 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1139 # With Setjmp/Longjmp based exception handling.
1140 AC_ARG_ENABLE(sjlj-exceptions,
1141 [ --enable-sjlj-exceptions
1142 arrange to use setjmp/longjmp exception handling],
1145 if test $enableval != yes; then
1146 AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1151 force_sjlj_exceptions=yes],
1154 force_sjlj_exceptions=yes
1158 force_sjlj_exceptions=no
1161 if test $force_sjlj_exceptions = yes; then
1162 sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1163 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1164 [Define 0/1 to force the choice for exception handling model.])
1167 # For platforms with the unwind ABI which includes an unwind library,
1168 # libunwind, we can choose to use the system libunwind.
1169 # config.gcc also contains tests of with_system_libunwind.
1170 GCC_CHECK_UNWIND_GETIPINFO
1172 # --------------------------------------------------------
1173 # Build, host, and target specific configuration fragments
1174 # --------------------------------------------------------
1176 # Collect build-machine-specific information.
1177 . ${srcdir}/config.build
1179 # Collect host-machine-specific information.
1180 . ${srcdir}/config.host
1184 # Collect target-machine-specific information.
1185 . ${srcdir}/config.gcc
1187 extra_objs="${host_extra_objs} ${extra_objs}"
1188 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1190 # Default the target-machine variables that were not explicitly set.
1191 if test x"$tm_file" = x
1192 then tm_file=$cpu_type/$cpu_type.h; fi
1194 if test x"$extra_headers" = x
1195 then extra_headers=; fi
1197 if test x$md_file = x
1198 then md_file=$cpu_type/$cpu_type.md; fi
1200 if test x$out_file = x
1201 then out_file=$cpu_type/$cpu_type.c; fi
1203 if test x"$tmake_file" = x
1204 then tmake_file=$cpu_type/t-$cpu_type
1207 if test x"$dwarf2" = xyes
1208 then tm_file="$tm_file tm-dwarf2.h"
1211 # Say what files are being used for the output code and MD file.
1212 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1213 echo "Using \`$srcdir/config/$md_file' as machine description file."
1215 # If any of the xm_file variables contain nonexistent files, warn
1216 # about them and drop them.
1219 for x in $build_xm_file; do
1220 if test -f $srcdir/config/$x
1222 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1228 for x in $host_xm_file; do
1229 if test -f $srcdir/config/$x
1231 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1237 for x in $xm_file; do
1238 if test -f $srcdir/config/$x
1240 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1246 for f in $tm_file; do
1249 if test $count = ax; then
1250 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1252 echo "Using the following target machine macro files:"
1253 for f in $tm_file; do
1254 echo " $srcdir/config/$f"
1258 if test x$need_64bit_hwint = xyes; then
1259 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1260 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1263 if test x$use_long_long_for_widest_fast_int = xyes; then
1264 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1265 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1266 efficiently supported by the host hardware.])
1270 for f in $host_xm_file; do
1273 if test $count = a; then
1275 elif test $count = ax; then
1276 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1278 echo "Using the following host machine macro files:"
1279 for f in $host_xm_file; do
1280 echo " $srcdir/config/$f"
1283 echo "Using ${out_host_hook_obj} for host machine hooks."
1285 if test "$host_xm_file" != "$build_xm_file"; then
1287 for f in $build_xm_file; do
1290 if test $count = a; then
1292 elif test $count = ax; then
1293 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1295 echo "Using the following build machine macro files:"
1296 for f in $build_xm_file; do
1297 echo " $srcdir/config/$f"
1304 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1305 gcc_cv_mcontext_underscores,
1307 #include <sys/cdefs.h>
1308 #include <sys/signal.h>
1309 #include <ucontext.h>
1310 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1312 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1313 if test $gcc_cv_mcontext_underscores = yes; then
1314 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1315 [mcontext_t fields start with __])
1324 # Check if a valid thread package
1325 case ${enable_threads} in
1328 target_thread_file='single'
1332 target_thread_file='single'
1334 aix | dce | gnat | irix | posix | posix95 | rtems | \
1335 single | vxworks | win32 | mipssde)
1336 target_thread_file=${enable_threads}
1339 echo "${enable_threads} is an unknown thread package" 1>&2
1344 if test x${thread_file} = x; then
1345 # No thread file set by target-specific clauses in config.gcc,
1346 # so use file chosen by default logic above
1347 thread_file=${target_thread_file}
1350 # Make gthr-default.h if we have a thread file.
1352 if test $thread_file != single; then
1353 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1354 if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1355 rm -f gthr-default.h-t
1357 mv -f gthr-default.h-t gthr-default.h
1359 gthread_flags=-DHAVE_GTHR_DEFAULT
1361 AC_SUBST(gthread_flags)
1368 if test x$enable___cxa_atexit = xyes || \
1369 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1370 if test x$host = x$target; then
1372 # mingw32 doesn't have __cxa_atexit but uses atexit registration
1373 # keyed to flag_use_cxa_atexit
1378 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1379 [echo "__cxa_atexit can't be enabled on this target"])
1383 # We can't check for __cxa_atexit when building a cross, so assume
1387 if test x$use_cxa_atexit = xyes; then
1388 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1389 [Define if you want to use __cxa_atexit, rather than atexit, to
1390 register C++ destructors for local statics and global objects.
1391 This is essential for fully standards-compliant handling of
1392 destructors, but requires __cxa_atexit in libc.])
1396 # Look for a file containing extra machine modes.
1397 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1398 extra_modes_file='$(srcdir)'/config/${extra_modes}
1399 AC_SUBST(extra_modes_file)
1400 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1401 [Define to the name of a file containing a list of extra machine modes
1402 for this architecture.])
1405 # Convert extra_options into a form suitable for Makefile use.
1408 for f in $extra_options; do
1409 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1410 all_opt_files="$all_opt_files $srcdir/config/$f"
1412 AC_SUBST(extra_opt_files)
1414 # auto-host.h is the file containing items generated by autoconf and is
1415 # the first file included by config.h.
1416 # If host=build, it is correct to have bconfig include auto-host.h
1417 # as well. If host!=build, we are in error and need to do more
1418 # work to find out the build config parameters.
1419 if test x$host = x$build
1421 build_auto=auto-host.h
1423 # We create a subdir, then run autoconf in the subdir.
1424 # To prevent recursion we set host and build for the new
1425 # invocation of configure to the build for this invocation
1432 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1433 *) realsrcdir=../${srcdir};;
1435 saved_CFLAGS="${CFLAGS}"
1436 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1437 LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1438 ${realsrcdir}/configure \
1439 --enable-languages=${enable_languages-all} \
1440 --target=$target_alias --host=$build_alias --build=$build_alias
1441 CFLAGS="${saved_CFLAGS}"
1443 # We just finished tests for the build machine, so rename
1444 # the file auto-build.h in the gcc directory.
1445 mv auto-host.h ../auto-build.h
1448 build_auto=auto-build.h
1450 AC_SUBST(build_subdir)
1452 tm_file="${tm_file} defaults.h"
1453 tm_p_file="${tm_p_file} tm-preds.h"
1454 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1455 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1456 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1457 # put this back in temporarily.
1458 xm_file="auto-host.h ansidecl.h ${xm_file}"
1465 # Compile in configure arguments.
1466 if test -f configargs.h ; then
1467 # Being re-configured.
1468 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1469 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1471 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1474 # Double all backslashes and backslash all quotes to turn
1475 # gcc_config_arguments into a C string.
1476 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1477 $gcc_config_arguments
1479 gcc_config_arguments_str=`cat conftest.out`
1482 cat > configargs.h <<EOF
1483 /* Generated automatically. */
1484 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1485 static const char thread_model[] = "$thread_file";
1487 static const struct {
1488 const char *name, *value;
1489 } configure_default_options[] = $configure_default_options;
1494 gcc_BASEVER=`cat $srcdir/BASE-VER`
1495 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1496 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1497 if test -f $srcdir/REVISION ; then
1498 gcc_REVISION=`cat $srcdir/REVISION`
1502 cat > plugin-version.h <<EOF
1503 #include "configargs.h"
1505 static char basever[] = "$gcc_BASEVER";
1506 static char datestamp[] = "$gcc_DATESTAMP";
1507 static char devphase[] = "$gcc_DEVPHASE";
1508 static char revision[] = "$gcc_REVISION";
1510 /* FIXME plugins: We should make the version information more precise.
1511 One way to do is to add a checksum. */
1513 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1515 configuration_arguments};
1519 # Internationalization
1520 ZW_GNU_GETTEXT_SISTER_DIR
1522 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1523 # -liconv on the link line twice.
1524 case "$LIBINTL" in *$LIBICONV*)
1528 AC_ARG_ENABLE(secureplt,
1529 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1532 AC_ARG_ENABLE(leading-mingw64-underscores,
1533 AS_HELP_STRING([--enable-leading-mingw64-underscores],
1534 [Enable leading underscores on 64 bit mingw targets]),
1536 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1537 [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1538 [Define if we should use leading underscore on 64 bit mingw targets])])
1541 [ --enable-cld enable -mcld by default for 32bit x86], [],
1544 AC_ARG_ENABLE(frame-pointer,
1545 [ --enable-frame-pointer enable -fno-omit-frame-pointer by default for 32bit x86], [],
1548 linux* | darwin[[8912]]*)
1549 # Enable -fomit-frame-pointer by default for Linux and Darwin with
1551 enable_frame_pointer=no
1554 enable_frame_pointer=yes
1559 # Windows32 Registry support for specifying GCC installation paths.
1560 AC_ARG_ENABLE(win32-registry,
1561 [ --disable-win32-registry
1562 disable lookup of installation paths in the
1563 Registry on Windows hosts
1564 --enable-win32-registry enable registry lookup (default)
1565 --enable-win32-registry=KEY
1566 use KEY instead of GCC version as the last portion
1567 of the registry key],,)
1570 win32 | pe | cygwin* | mingw32* | uwin*)
1571 if test "x$enable_win32_registry" != xno; then
1572 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1575 if test "x$enable_win32_registry" != xno; then
1576 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1577 [Define to 1 if installation paths should be looked up in the Windows
1578 Registry. Ignored on non-Windows hosts.])
1580 if test "x$enable_win32_registry" != xyes \
1581 && test "x$enable_win32_registry" != x; then
1582 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1583 [Define to be the last component of the Windows registry key under which
1584 to look for installation paths. The full key used will be
1585 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1586 The default is the GCC version number.])
1592 # Get an absolute path to the GCC top-level source directory
1593 holddir=`${PWDCMD-pwd}`
1595 topdir=`${PWDCMD-pwd}`
1598 # Conditionalize the makefile for this host machine.
1600 for f in ${host_xmake_file}
1602 if test -f ${srcdir}/config/$f
1604 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1608 # Conditionalize the makefile for this target machine.
1610 for f in ${tmake_file}
1612 if test -f ${srcdir}/config/$f
1614 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1617 tmake_file="${tmake_file_}"
1619 out_object_file=`basename $out_file .c`.o
1621 tm_file_list="options.h"
1622 tm_include_list="options.h insn-constants.h"
1623 for f in $tm_file; do
1626 f=`echo $f | sed 's/^..//'`
1627 tm_file_list="${tm_file_list} $f"
1628 tm_include_list="${tm_include_list} $f"
1631 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1632 tm_include_list="${tm_include_list} $f"
1635 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1636 tm_include_list="${tm_include_list} config/$f"
1643 for f in $tm_p_file; do
1646 tm_p_file_list="${tm_p_file_list} $f"
1647 tm_p_include_list="${tm_p_include_list} $f"
1650 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1651 tm_p_include_list="${tm_p_include_list} config/$f"
1657 for f in $xm_file; do
1660 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1661 xm_include_list="${xm_include_list} $f"
1664 xm_file_list="${xm_file_list} $f"
1665 xm_include_list="${xm_include_list} $f"
1668 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1669 xm_include_list="${xm_include_list} config/$f"
1675 host_xm_include_list=
1676 for f in $host_xm_file; do
1679 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1680 host_xm_include_list="${host_xm_include_list} $f"
1683 host_xm_file_list="${host_xm_file_list} $f"
1684 host_xm_include_list="${host_xm_include_list} $f"
1687 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1688 host_xm_include_list="${host_xm_include_list} config/$f"
1694 for f in $build_xm_file; do
1697 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1698 build_xm_include_list="${build_xm_include_list} $f"
1700 auto-build.h | auto-host.h )
1701 build_xm_file_list="${build_xm_file_list} $f"
1702 build_xm_include_list="${build_xm_include_list} $f"
1705 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1706 build_xm_include_list="${build_xm_include_list} config/$f"
1711 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1712 # cross-compiler which does not use the native headers and libraries.
1713 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1714 CROSS= AC_SUBST(CROSS)
1715 ALL=all.internal AC_SUBST(ALL)
1716 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1718 if test "x$with_build_sysroot" != x; then
1719 build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1721 # This value is used, even on a native system, because
1722 # CROSS_SYSTEM_HEADER_DIR is just
1723 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1724 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1727 if test x$host != x$target
1729 CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1731 SYSTEM_HEADER_DIR=$build_system_header_dir
1732 case "$host","$target" in
1733 # Darwin crosses can use the host system's libraries and headers,
1734 # because of the fat library support. Of course, it must be the
1735 # same version of Darwin on both sides. Allow the user to
1736 # just say --target=foo-darwin without a version number to mean
1737 # "the version on this system".
1738 *-*-darwin*,*-*-darwin*)
1739 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1740 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1741 if test $hostos = $targetos -o $targetos = darwin ; then
1743 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1748 i?86-*-*,x86_64-*-* \
1749 | powerpc*-*-*,powerpc64*-*-*)
1750 CROSS="$CROSS -DNATIVE_CROSS" ;;
1755 if test "x$with_headers" = x; then
1762 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1763 SYSTEM_HEADER_DIR=$build_system_header_dir
1766 # If this is a cross-compiler that does not
1767 # have its own set of headers then define
1770 # If this is using newlib, without having the headers available now,
1771 # then define inhibit_libc in LIBGCC2_CFLAGS.
1772 # This prevents libgcc2 from containing any code which requires libc
1774 : ${inhibit_libc=false}
1775 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1776 test x$with_newlib = xyes ; } &&
1777 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1780 AC_SUBST(inhibit_libc)
1782 # When building gcc with a cross-compiler, we need to adjust things so
1783 # that the generator programs are still built with the native compiler.
1784 # Also, we cannot run fixincludes.
1786 # These are the normal (build=host) settings:
1787 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1788 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1789 BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
1790 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1792 # And these apply if build != host, or we are generating coverage data
1793 if test x$build != x$host || test "x$coverage_flags" != x
1795 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1796 BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1799 # Expand extra_headers to include complete path.
1800 # This substitutes for lots of t-* files.
1802 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1803 for file in ${extra_headers} ; do
1804 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1807 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1808 if test x"$use_gcc_tgmath" = xyes
1809 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1812 # Define collect2 in Makefile.
1813 case $host_can_use_collect2 in
1815 *) collect2='collect2$(exeext)' ;;
1817 AC_SUBST([collect2])
1819 # Add a definition of USE_COLLECT2 if system wants one.
1820 case $use_collect2 in
1821 no) use_collect2= ;;
1824 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1825 xm_defines="${xm_defines} USE_COLLECT2"
1826 case $host_can_use_collect2 in
1828 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1834 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
1835 [Define to the name of the LTO plugin DSO that must be
1836 passed to the linker's -plugin=LIB option.])
1838 # ---------------------------
1839 # Assembler & linker features
1840 # ---------------------------
1842 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1843 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1844 # However when ld-new is first executed from the build tree, libtool will
1845 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1846 # to the build tree. While doing this we need to use the previous-stage
1847 # linker, or we have an infinite loop. The presence of a shell script as
1848 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1849 # the gcc/collect-ld script. So we need to know how libtool works, or
1850 # exec-tool will fail.
1852 m4_defun([_LT_CONFIG_COMMANDS], [])
1855 AC_SUBST(enable_fast_install)
1857 # Identify the assembler which will work hand-in-glove with the newly
1858 # built GCC, so that we can examine its features. This is the assembler
1859 # which will be driven by the driver program.
1861 # If build != host, and we aren't building gas in-tree, we identify a
1862 # build->target assembler and hope that it will have the same features
1863 # as the host->target assembler we'll be using.
1864 gcc_cv_gas_major_version=
1865 gcc_cv_gas_minor_version=
1866 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1868 m4_pattern_allow([AS_FOR_TARGET])dnl
1869 AS_VAR_SET_IF(gcc_cv_as,, [
1870 if test -x "$DEFAULT_ASSEMBLER"; then
1871 gcc_cv_as="$DEFAULT_ASSEMBLER"
1872 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1873 && test -f ../gas/Makefile \
1874 && test x$build = x$host; then
1875 gcc_cv_as=../gas/as-new$build_exeext
1876 elif test -x as$build_exeext; then
1877 # Build using assembler in the current directory.
1878 gcc_cv_as=./as$build_exeext
1879 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
1880 gcc_cv_as="$AS_FOR_TARGET"
1882 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1885 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1886 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1887 case "$ORIGINAL_AS_FOR_TARGET" in
1888 ./as | ./as$build_exeext) ;;
1889 *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1892 AC_MSG_CHECKING(what assembler to use)
1893 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1894 # Single tree build which includes gas. We want to prefer it
1895 # over whatever linker top-level may have detected, since
1896 # we'll use what we're building after installation anyway.
1897 AC_MSG_RESULT(newly built gas)
1899 _gcc_COMPUTE_GAS_VERSION
1900 in_tree_gas_is_elf=no
1901 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1902 || (grep 'obj_format = multi' ../gas/Makefile \
1903 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1905 in_tree_gas_is_elf=yes
1908 AC_MSG_RESULT($gcc_cv_as)
1912 # Identify the linker which will work hand-in-glove with the newly
1913 # built GCC, so that we can examine its features. This is the linker
1914 # which will be driven by the driver program.
1916 # If build != host, and we aren't building gas in-tree, we identify a
1917 # build->target linker and hope that it will have the same features
1918 # as the host->target linker we'll be using.
1919 gcc_cv_gld_major_version=
1920 gcc_cv_gld_minor_version=
1921 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1922 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1924 AS_VAR_SET_IF(gcc_cv_ld,, [
1925 if test -x "$DEFAULT_LINKER"; then
1926 gcc_cv_ld="$DEFAULT_LINKER"
1927 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1928 && test -f ../ld/Makefile \
1929 && test x$build = x$host; then
1930 gcc_cv_ld=../ld/ld-new$build_exeext
1931 elif test -x collect-ld$build_exeext; then
1932 # Build using linker in the current directory.
1933 gcc_cv_ld=./collect-ld$build_exeext
1934 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
1935 gcc_cv_ld="$LD_FOR_TARGET"
1937 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1940 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
1941 PLUGIN_LD=`basename $gcc_cv_ld`
1942 AC_ARG_WITH(plugin-ld,
1943 [ --with-plugin-ld=[[ARG]] specify the plugin linker],
1944 [if test x"$withval" != x; then
1945 ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
1946 PLUGIN_LD="$withval"
1948 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
1949 AC_DEFINE_UNQUOTED(PLUGIN_LD, "$PLUGIN_LD", [Specify plugin linker])
1951 # Check to see if we are using gold instead of ld
1952 AC_MSG_CHECKING(whether we are using gold)
1954 if test x$gcc_cv_ld != x; then
1955 if $gcc_cv_ld --version 2>/dev/null | sed 1q \
1956 | grep "GNU gold" > /dev/null; then
1960 AC_MSG_RESULT($ld_is_gold)
1962 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1963 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1964 case "$ORIGINAL_LD_FOR_TARGET" in
1965 ./collect-ld | ./collect-ld$build_exeext) ;;
1966 *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1969 AC_MSG_CHECKING(what linker to use)
1970 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
1971 || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
1972 # Single tree build which includes ld. We want to prefer it
1973 # over whatever linker top-level may have detected, since
1974 # we'll use what we're building after installation anyway.
1975 AC_MSG_RESULT(newly built ld)
1977 in_tree_ld_is_elf=no
1978 if (grep 'EMUL = .*elf' ../ld/Makefile \
1979 || grep 'EMUL = .*linux' ../ld/Makefile \
1980 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1981 in_tree_ld_is_elf=yes
1982 elif test "$ld_is_gold" = yes; then
1983 in_tree_ld_is_elf=yes
1985 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
1988 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1989 if test x$gcc_cv_gld_version != x; then
1993 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1994 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1997 AC_MSG_RESULT($gcc_cv_ld)
2001 # Figure out what nm we will be using.
2002 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2003 AS_VAR_SET_IF(gcc_cv_nm,, [
2004 if test -f $gcc_cv_binutils_srcdir/configure.in \
2005 && test -f ../binutils/Makefile \
2006 && test x$build = x$host; then
2007 gcc_cv_nm=../binutils/nm-new$build_exeext
2008 elif test -x nm$build_exeext; then
2009 gcc_cv_nm=./nm$build_exeext
2010 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2011 gcc_cv_nm="$NM_FOR_TARGET"
2013 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2016 AC_MSG_CHECKING(what nm to use)
2017 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2018 # Single tree build which includes binutils.
2019 AC_MSG_RESULT(newly built nm)
2022 AC_MSG_RESULT($gcc_cv_nm)
2026 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2027 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2028 case "$ORIGINAL_NM_FOR_TARGET" in
2029 ./nm | ./nm$build_exeext) ;;
2030 *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2034 # Figure out what objdump we will be using.
2035 AS_VAR_SET_IF(gcc_cv_objdump,, [
2036 if test -f $gcc_cv_binutils_srcdir/configure.in \
2037 && test -f ../binutils/Makefile \
2038 && test x$build = x$host; then
2039 # Single tree build which includes binutils.
2040 gcc_cv_objdump=../binutils/objdump$build_exeext
2041 elif test -x objdump$build_exeext; then
2042 gcc_cv_objdump=./objdump$build_exeext
2043 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2044 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2046 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2049 AC_MSG_CHECKING(what objdump to use)
2050 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2051 # Single tree build which includes binutils.
2052 AC_MSG_RESULT(newly built objdump)
2053 elif test x$gcc_cv_objdump = x; then
2054 AC_MSG_RESULT(not found)
2056 AC_MSG_RESULT($gcc_cv_objdump)
2059 # Figure out what readelf we will be using.
2060 AS_VAR_SET_IF(gcc_cv_readelf,, [
2061 if test -f $gcc_cv_binutils_srcdir/configure.in \
2062 && test -f ../binutils/Makefile \
2063 && test x$build = x$host; then
2064 # Single tree build which includes binutils.
2065 gcc_cv_readelf=../binutils/readelf$build_exeext
2066 elif test -x readelf$build_exeext; then
2067 gcc_cv_readelf=./readelf$build_exeext
2069 AC_PATH_PROG(gcc_cv_readelf, readelf)
2072 AC_MSG_CHECKING(what readelf to use)
2073 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2074 # Single tree build which includes binutils.
2075 AC_MSG_RESULT(newly built readelf)
2076 elif test x$gcc_cv_readelf = x; then
2077 AC_MSG_RESULT(not found)
2079 AC_MSG_RESULT($gcc_cv_readelf)
2082 # Figure out what assembler alignment features are present.
2083 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2087 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2088 [Define if your assembler supports .balign and .p2align.])])
2090 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2093 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2094 [Define if your assembler supports specifying the maximum number
2095 of bytes to skip when using the GAS .p2align command.])])
2097 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2100 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2101 [Define if your assembler supports .literal16.])])
2103 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2105 [conftest_label1: .word 0
2107 conftest_label2: .word 0
2109 [if test x$gcc_cv_nm != x; then
2110 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2111 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2112 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2114 else gcc_cv_as_subsection_m1=yes
2116 rm -f conftest.nm1 conftest.nm2
2118 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2119 [Define if your assembler supports .subsection and .subsection -1 starts
2120 emitting at the beginning of your section.])])
2122 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2125 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2127 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2129 [ .weakref foobar, barfnot],,
2130 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2132 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2135 .NSUBSPA $CODE$,COMDAT],,
2136 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2138 # .hidden needs to be supported in both the assembler and the linker,
2139 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2140 # This is irritatingly difficult to feature test for; we have to check the
2141 # date string after the version number. If we've got an in-tree
2142 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2144 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2145 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2149 # Solaris 9/x86 as incorrectly emits an alias for a hidden symbol with
2150 # STV_HIDDEN, so disable .hidden support if so.
2153 if test x$gcc_cv_as != x && test x$gcc_cv_objdump != x; then
2154 cat > conftest.s <<EOF
2161 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2162 && $gcc_cv_objdump -t conftest.o 2>/dev/null | \
2163 grep '\.hidden default' > /dev/null; then
2166 gcc_cv_as_hidden=yes
2169 # Assume bug is present if objdump is missing.
2174 gcc_cv_as_hidden=yes
2178 # gnu_indirect_function type is an extension proposed at
2179 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2180 # selection of function implementation
2181 AC_ARG_ENABLE(gnu-indirect-function,
2182 [AS_HELP_STRING([--enable-gnu-indirect-function],
2183 [enable the use of the @gnu_indirect_function to glibc systems])],
2184 [case $enable_gnu_indirect_function in
2186 *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2187 Valid choices are 'yes' and 'no'.]) ;;
2189 [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2190 if test x$enable_gnu_indirect_function = xyes; then
2191 AC_DEFINE(HAVE_GNU_INDIRECT_FUNCTION, 1,
2192 [Define if your system supports gnu indirect functions.])
2196 if test $in_tree_ld != yes ; then
2197 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2198 if echo "$ld_ver" | grep GNU > /dev/null; then
2199 if test x"$ld_is_gold" = xyes; then
2200 # GNU gold --version looks like this:
2202 # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2204 # We extract the binutils version which is more familiar and specific
2205 # than the gold version.
2206 ld_vers=`echo $ld_ver | sed -n \
2207 -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2209 # GNU ld --version looks like this:
2211 # GNU ld (GNU Binutils) 2.21.51.20110225
2212 ld_vers=`echo $ld_ver | sed -n \
2213 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2215 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2216 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2217 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2218 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2223 # Solaris 2 ld -V output looks like this for a regular version:
2225 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1699
2227 # but test versions add stuff at the end:
2229 # ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1701:onnv-ab196087-6931056-03/25/10
2231 ld_ver=`$gcc_cv_ld -V 2>&1`
2232 if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2233 ld_vers=`echo $ld_ver | sed -n \
2234 -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2235 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2236 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2244 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2245 [[if test $in_tree_ld = yes ; then
2247 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2248 && test $in_tree_ld_is_elf = yes; then
2249 gcc_cv_ld_hidden=yes
2252 gcc_cv_ld_hidden=yes
2253 if test x"$ld_is_gold" = xyes; then
2255 elif echo "$ld_ver" | grep GNU > /dev/null; then
2256 if test 0"$ld_date" -lt 20020404; then
2257 if test -n "$ld_date"; then
2258 # If there was date string, but was earlier than 2002-04-04, fail
2260 elif test -z "$ld_vers"; then
2261 # If there was no date string nor ld version number, something is wrong
2264 test -z "$ld_vers_patch" && ld_vers_patch=0
2265 if test "$ld_vers_major" -lt 2; then
2267 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2268 gcc_cv_ld_hidden="no"
2269 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2276 hppa64*-*-hpux* | ia64*-*-hpux*)
2277 gcc_cv_ld_hidden=yes
2280 # .hidden support was backported to Solaris 8, starting with ld
2282 if test "$ld_vers_minor" -ge 276; then
2283 gcc_cv_ld_hidden=yes
2288 *-*-solaris2.9* | *-*-solaris2.1[0-9]*)
2289 # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2290 # .symbolic was only added in Solaris 9 12/02.
2291 gcc_cv_ld_hidden=yes
2299 libgcc_visibility=no
2300 AC_SUBST(libgcc_visibility)
2301 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2302 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2303 libgcc_visibility=yes
2304 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2305 [Define if your assembler and linker support .hidden.])
2308 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2309 gcc_cv_ld_ro_rw_mix=unknown
2310 if test $in_tree_ld = yes ; then
2311 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2312 && test $in_tree_ld_is_elf = yes; then
2313 gcc_cv_ld_ro_rw_mix=read-write
2315 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2316 echo '.section myfoosect, "a"' > conftest1.s
2317 echo '.section myfoosect, "aw"' > conftest2.s
2318 echo '.byte 1' >> conftest2.s
2319 echo '.section myfoosect, "a"' > conftest3.s
2320 echo '.byte 0' >> conftest3.s
2321 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2322 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2323 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2324 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2325 conftest2.o conftest3.o > /dev/null 2>&1; then
2326 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2327 | sed -e '/myfoosect/!d' -e N`
2328 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2329 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2330 gcc_cv_ld_ro_rw_mix=read-only
2332 gcc_cv_ld_ro_rw_mix=read-write
2337 rm -f conftest.* conftest[123].*
2340 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2341 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2342 [Define if your linker links a mix of read-only
2343 and read-write sections into a read-write section.])
2345 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2347 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2348 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2356 [[# GAS versions before 2.11 do not support uleb128,
2357 # despite appearing to.
2358 # ??? There exists an elf-specific test that will crash
2359 # the assembler. Perhaps it's better to figure out whether
2360 # arbitrary sections are supported and try the test.
2361 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2362 if echo "$as_ver" | grep GNU > /dev/null; then
2363 as_vers=`echo $as_ver | sed -n \
2364 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2365 as_major=`expr "$as_vers" : '\([0-9]*\)'`
2366 as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2367 if test $as_major -eq 2 && test $as_minor -lt 11
2369 else gcc_cv_as_leb128=yes
2372 [AC_DEFINE(HAVE_AS_LEB128, 1,
2373 [Define if your assembler supports .sleb128 and .uleb128.])])
2375 # Check if we have assembler support for unwind directives.
2376 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2383 .cfi_escape 1, 2, 3, 4, 5
2387 # If the linker used on Solaris (like Sun ld) isn't capable of merging
2388 # read-only and read-write sections, we need to make sure that the
2389 # assembler used emits read-write .eh_frame sections.
2390 if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2391 if test "x$gcc_cv_objdump" != x; then
2392 if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2393 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2394 gcc_cv_as_cfi_directive=no
2397 i?86-*-solaris2.1[[0-9]]*)
2398 # On Solaris/x86, make sure that GCC and gas agree on using
2399 # read-only .eh_frame sections for 64-bit.
2400 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1 && \
2401 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2402 sed -e /.eh_frame/!d -e N | \
2403 grep READONLY > /dev/null; then
2404 gcc_cv_as_cfi_directive=yes
2406 gcc_cv_as_cfi_directive=no
2410 gcc_cv_as_cfi_directive=yes
2415 # no objdump, err on the side of caution
2416 gcc_cv_as_cfi_directive=no
2419 gcc_cv_as_cfi_directive=yes
2423 gcc_cv_as_cfi_directive=yes
2426 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2427 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2431 .cfi_adjust_cfa_offset 64
2433 .cfi_adjust_cfa_offset 128
2436 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2437 | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then
2438 gcc_cv_as_cfi_advance_working=yes
2442 # no objdump, err on the side of caution
2443 gcc_cv_as_cfi_advance_working=no
2445 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2446 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2447 [`if test $gcc_cv_as_cfi_directive = yes \
2448 && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2449 [Define 0/1 if your assembler supports CFI directives.])
2451 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2452 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2453 gcc_cv_as_cfi_personality_directive, ,,
2456 .cfi_personality 0, symbol
2458 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2459 [`if test $gcc_cv_as_cfi_personality_directive = yes;
2460 then echo 1; else echo 0; fi`],
2461 [Define 0/1 if your assembler supports .cfi_personality.])
2463 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2464 gcc_cv_as_cfi_sections_directive, ,,
2466 .cfi_sections .debug_frame, .eh_frame
2470 win32 | pe | cygwin* | mingw32* | uwin*)
2471 # Need to check that we generated the correct relocation for the
2472 # .debug_frame section. This was fixed for binutils 2.21.
2473 gcc_cv_as_cfi_sections_directive=no
2474 if test "x$gcc_cv_objdump" != x; then
2475 if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2476 grep secrel > /dev/null; then
2477 gcc_cv_as_cfi_sections_directive=yes
2482 gcc_cv_as_cfi_sections_directive=yes
2485 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2486 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2487 [`if test $gcc_cv_as_cfi_sections_directive = yes;
2488 then echo 1; else echo 0; fi`],
2489 [Define 0/1 if your assembler supports .cfi_sections.])
2491 # GAS versions up to and including 2.11.0 may mis-optimize
2493 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2501 .section .eh_frame,"aw",@progbits
2503 .4byte .LECIE1-.LSCIE1
2517 .4byte .LEFDE1-.LASFDE1
2519 .4byte .LASFDE1-__FRAME_BEGIN__
2527 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2528 cat > conftest.lit <<EOF
2529 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2530 0010 01000000 12000000 18000000 00000000 ................
2531 0020 08000000 04080000 0044 .........D @&t@
2533 cat > conftest.big <<EOF
2534 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2535 0010 00000001 00000012 00000018 00000000 ................
2536 0020 00000008 04000000 0844 .........D @&t@
2538 # If the assembler didn't choke, and we can objdump,
2539 # and we got the correct data, then succeed.
2540 # The text in the here-document typically retains its unix-style line
2541 # endings, while the output of objdump will use host line endings.
2542 # Therefore, use diff -b for the comparisons.
2543 if test x$gcc_cv_objdump != x \
2544 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2545 | tail -3 > conftest.got \
2546 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2547 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2549 gcc_cv_as_eh_frame=yes
2550 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2551 gcc_cv_as_eh_frame=buggy
2553 # Uh oh, what do we do now?
2554 gcc_cv_as_eh_frame=no
2557 if test $gcc_cv_as_eh_frame = buggy; then
2558 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2559 [Define if your assembler mis-optimizes .eh_frame data.])
2562 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2563 [elf,2,12,0], [--fatal-warnings],
2564 [.section .rodata.str, "aMS", @progbits, 1])
2565 if test $gcc_cv_as_shf_merge = no; then
2566 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2567 [elf,2,12,0], [--fatal-warnings],
2568 [.section .rodata.str, "aMS", %progbits, 1])
2570 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2571 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2572 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2574 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2575 [elf,2,16,0], [--fatal-warnings],
2576 [.section .text,"axG",@progbits,.foo,comdat])
2577 if test $gcc_cv_as_comdat_group = yes; then
2578 gcc_cv_as_comdat_group_percent=no
2580 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2581 [elf,2,16,0], [--fatal-warnings],
2582 [.section .text,"axG",%progbits,.foo,comdat])
2584 if test x"$ld_is_gold" = xyes; then
2586 elif test $in_tree_ld = yes ; then
2588 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2589 && test $in_tree_ld_is_elf = yes; then
2592 elif echo "$ld_ver" | grep GNU > /dev/null; then
2594 if test 0"$ld_date" -lt 20050308; then
2595 if test -n "$ld_date"; then
2596 # If there was date string, but was earlier than 2005-03-08, fail
2598 elif test "$ld_vers_major" -lt 2; then
2600 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2607 *-*-solaris2.1[1-9]*)
2608 # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2609 # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2612 # FIXME: Maybe need to refine later when COMDAT group support with
2613 # Sun as is implemented.
2614 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 1688; then
2621 # Assume linkers other than GNU ld don't support COMDAT group.
2627 # Allow overriding the automatic COMDAT group tests above.
2628 AC_ARG_ENABLE(comdat,
2629 [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
2630 [comdat_group="$enable_comdat"])
2631 if test $comdat_group = no; then
2632 gcc_cv_as_comdat_group=no
2633 gcc_cv_as_comdat_group_percent=no
2635 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2636 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2637 [Define 0/1 if your assembler and linker support COMDAT groups.])
2639 gcc_GAS_CHECK_FEATURE([line table discriminator support],
2640 gcc_cv_as_discriminator,
2644 .loc 1 1 0 discriminator 1],,
2645 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
2646 [Define if your assembler supports the .loc discriminator sub-directive.])])
2648 # Thread-local storage - the check is heavily parameterized.
2657 .section ".tdata","awT",@progbits
2660 ldq $27,__tls_get_addr($29) !literal!1
2661 lda $16,foo($29) !tlsgd!1
2662 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2663 ldq $27,__tls_get_addr($29) !literal!2
2664 lda $16,foo($29) !tlsldm!2
2665 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2666 ldq $1,foo($29) !gotdtprel
2667 ldah $2,foo($29) !dtprelhi
2668 lda $3,foo($2) !dtprello
2669 lda $4,foo($29) !dtprel
2670 ldq $1,foo($29) !gottprel
2671 ldah $2,foo($29) !tprelhi
2672 lda $3,foo($2) !tprello
2673 lda $4,foo($29) !tprel'
2676 tls_as_opt=--fatal-warnings
2678 cris-*-*|crisv32-*-*)
2680 .section ".tdata","awT",@progbits
2687 tls_as_opt=--fatal-warnings
2691 .section ".tdata","awT",@progbits
2703 .section ".tdata","awT",@progbits
2707 addil LT%foo-$tls_gdidx$,gp
2708 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2711 addil LT%foo-$tls_ldidx$,gp
2713 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2714 addil LR%foo-$tls_dtpoff$,%ret0
2715 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2717 addil LT%foo-$tls_ieoff$,gp
2718 ldw RT%foo-$tls_ieoff$(%r1),%t2
2721 addil LR%foo-$tls_leoff$,%t1
2722 ldo RR%foo-$tls_leoff$(%r1),%t2'
2725 tls_as_opt=--fatal-warnings
2729 .section ".tdata","awT",%progbits
2742 i[34567]86-*-solaris2.*)
2744 tga_func=___tls_get_addr
2750 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2752 .section .tdata,"awt",@progbits'
2756 AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
2757 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
2761 .section ".tdata","awT",@progbits'
2764 tls_as_opt="--fatal-warnings"
2766 conftest_s="$conftest_s
2770 leal foo@tlsgd(,%ebx,1), %eax
2771 leal foo@tlsldm(%ebx), %eax
2772 leal foo@dtpoff(%eax), %edx
2773 movl foo@gottpoff(%ebx), %eax
2774 subl foo@gottpoff(%ebx), %eax
2775 addl foo@gotntpoff(%ebx), %eax
2776 movl foo@indntpoff, %eax
2777 movl \$foo@tpoff, %eax
2778 subl \$foo@tpoff, %eax
2779 leal foo@ntpoff(%ecx), %eax"
2783 .section ".tdata","awT",@progbits
2787 leaq foo@TLSGD(%rip), %rdi
2788 leaq foo@TLSLD(%rip), %rdi
2789 leaq foo@DTPOFF(%rax), %rdx
2790 movq foo@GOTTPOFF(%rip), %rax
2791 movq $foo@TPOFF, %rax'
2794 tls_as_opt=--fatal-warnings
2798 .section ".tdata","awT",@progbits
2801 addl r16 = @ltoff(@dtpmod(foo#)), gp
2802 addl r17 = @ltoff(@dtprel(foo#)), gp
2803 addl r18 = @ltoff(@tprel(foo#)), gp
2804 addl r19 = @dtprel(foo#), gp
2805 adds r21 = @dtprel(foo#), r13
2806 movl r23 = @dtprel(foo#)
2807 addl r20 = @tprel(foo#), gp
2808 adds r22 = @tprel(foo#), r13
2809 movl r24 = @tprel(foo#)'
2812 tls_as_opt=--fatal-warnings
2816 .section .tdata,"awT",@progbits
2820 addiu $4, $28, %tlsgd(x)
2821 addiu $4, $28, %tlsldm(x)
2822 lui $4, %dtprel_hi(x)
2823 addiu $4, $4, %dtprel_lo(x)
2824 lw $4, %gottprel(x)($28)
2825 lui $4, %tprel_hi(x)
2826 addiu $4, $4, %tprel_lo(x)'
2829 tls_as_opt='-32 --fatal-warnings'
2833 .section .tdata,"awT",@progbits
2838 move.l x@TLSGD(%a5),%a0
2839 move.l x@TLSLDM(%a5),%a0
2840 move.l x@TLSLDO(%a5),%a0
2841 move.l x@TLSIE(%a5),%a0
2842 move.l x@TLSLE(%a5),%a0'
2845 tls_as_opt='--fatal-warnings'
2849 .section ".tdata","awT",@progbits
2857 addi 3,31,ld0@got@tlsgd
2859 addi 3,31,x1@got@tlsld
2862 addis 9,3,x2@dtprel@ha
2863 addi 9,9,x2@dtprel@l
2864 lwz 9,x3@got@tprel(31)
2867 addis 9,2,x2@tprel@ha
2868 addi 9,9,x2@tprel@l'
2871 tls_as_opt="-a32 --fatal-warnings"
2875 .section ".tdata","awT",@progbits
2883 addi 3,2,ld0@got@tlsgd
2889 addi 3,2,x1@got@tlsld
2895 addis 9,3,x2@dtprel@ha
2896 addi 9,9,x2@dtprel@l
2899 ld 9,x3@got@dtprel(2)
2905 tls_as_opt="-a64 --fatal-warnings"
2909 .section ".tdata","awT",@progbits
2918 l %r1,foo@GOTNTPOFF(%r12)
2919 l %r1,0(%r1):tls_load:foo
2920 bas %r14,0(%r1,%r13):tls_gdcall:foo
2921 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2924 tls_as_opt="-m31 --fatal-warnings"
2928 .section ".tdata","awT",@progbits
2936 lg %r1,foo@GOTNTPOFF(%r12)
2937 larl %r1,foo@INDNTPOFF
2938 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2939 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2942 tls_as_opt="-m64 -Aesame --fatal-warnings"
2944 sh-*-* | sh[34]-*-*)
2946 .section ".tdata","awT",@progbits
2956 tls_as_opt=--fatal-warnings
2960 sparc*-sun-solaris2.*)
2962 tga_func=__tls_get_addr
2968 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2970 .section ".tdata",#alloc,#write,#tls'
2975 .section ".tdata","awT",@progbits'
2978 tls_as_opt="-32 --fatal-warnings"
2980 conftest_s="$conftest_s
2983 sethi %tgd_hi22(foo), %o0
2984 add %o0, %tgd_lo10(foo), %o1
2985 add %l7, %o1, %o0, %tgd_add(foo)
2986 call __tls_get_addr, %tgd_call(foo)
2987 sethi %tldm_hi22(foo), %l1
2988 add %l1, %tldm_lo10(foo), %l2
2989 add %l7, %l2, %o0, %tldm_add(foo)
2990 call __tls_get_addr, %tldm_call(foo)
2991 sethi %tldo_hix22(foo), %l3
2992 xor %l3, %tldo_lox10(foo), %l4
2993 add %o0, %l4, %l5, %tldo_add(foo)
2994 sethi %tie_hi22(foo), %o3
2995 add %o3, %tie_lo10(foo), %o3
2996 ld [%l7 + %o3], %o2, %tie_ld(foo)
2997 add %g7, %o2, %o4, %tie_add(foo)
2998 sethi %tle_hix22(foo), %l1
2999 xor %l1, %tle_lox10(foo), %o5
3000 ld [%g7 + %o5], %o1"
3004 .section ".tdata","awT",@progbits
3007 movi a8, foo@TLSFUNC
3008 movi a10, foo@TLSARG
3009 callx8.tls a8, foo@TLSCALL'
3016 if test "x$enable_tls" = xno ; then
3017 : # TLS explicitly disabled.
3018 elif test "x$enable_tls" = xyes ; then
3019 set_have_as_tls=yes # TLS explicitly enabled.
3020 elif test -z "$tls_first_major"; then
3021 : # If we don't have a check, assume no support.
3023 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3024 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3025 [set_have_as_tls=yes])
3029 # IRIX 6.5 rld and libc.so lack TLS support, so even if gas and gld
3030 # with TLS support are in use, native TLS cannot work.
3034 # Tru64 UNIX loader and libc.so lack TLS support, so even if gas and
3035 # gld with TLS support are in use, native TLS cannot work.
3038 # TLS was introduced in the Solaris 9 FCS release and backported to
3039 # Solaris 8 patches. Support for GNU-style TLS on x86 was only
3040 # introduced in Solaris 9 4/04, replacing the earlier Sun style that Sun
3041 # ld and GCC don't support any longer.
3043 AC_MSG_CHECKING(linker and ld.so.1 TLS support)
3045 # Check ld and ld.so.1 TLS support.
3046 if echo "$ld_ver" | grep GNU > /dev/null; then
3047 # Assume all interesting versions of GNU ld have TLS support.
3048 # FIXME: still need ld.so.1 support, i.e. ld version checks below.
3052 # Solaris 8/x86 ld has GNU style TLS support since version 1.280.
3054 min_tls_ld_vers_minor=280
3056 # Solaris 8/SPARC ld has TLS support since version 1.272.
3057 sparc*-*-solaris2.8)
3058 min_tls_ld_vers_minor=272
3060 # Solaris 9/x86 ld has GNU style TLS support since version 1.374.
3062 min_tls_ld_vers_minor=374
3064 # Solaris 9/SPARC and Solaris 10+ ld have TLS support since FCS.
3065 sparc*-*-solaris2.9 | *-*-solaris2.1[[0-9]]*)
3066 min_tls_ld_vers_minor=343
3069 if test "$ld_vers_major" -gt 1 || \
3070 test "$ld_vers_minor" -ge "$min_tls_ld_vers_minor"; then
3076 AC_MSG_RESULT($ld_tls_support)
3079 save_LDFLAGS="$LDFLAGS"
3083 AC_MSG_CHECKING(alternate thread library)
3085 # TLS support was backported to Solaris 8 patches, but only lives in
3086 # the alternate thread library which became the default in Solaris 9.
3087 # We want to always use that, irrespective of TLS support.
3089 # Take multilib subdir into account. There's no spec to handle
3090 # this. The 64 symlink exists since Solaris 8.
3091 lwp_dir=/usr/lib/lwp
3092 lwp_spec="-L$lwp_dir%{m64:/64} -R$lwp_dir%{m64:/64}"
3093 LDFLAGS="-L$lwp_dir -R$lwp_dir"
3100 # Always define LIB_THREAD_LDFLAGS_SPEC, even without TLS support.
3101 AC_DEFINE_UNQUOTED(LIB_THREAD_LDFLAGS_SPEC, "$lwp_spec",
3102 [Define to the linker flags to use for -pthread.])
3103 AC_MSG_RESULT($lwp_dir)
3105 AC_MSG_CHECKING(library containing $tga_func)
3106 # Before Solaris 10, __tls_get_addr (SPARC/x64) resp. ___tls_get_addr
3107 # (32-bit x86) only lived in libthread, so check for that. Keep
3108 # set_have_as_tls if found, disable if not.
3109 AC_SEARCH_LIBS([$tga_func], [thread],, [set_have_as_tls=no])
3110 # Clear LIBS if we cannot support TLS.
3111 if test $set_have_as_tls = no; then
3114 # Always define LIB_TLS_SPEC, even without TLS support.
3115 AC_DEFINE_UNQUOTED(LIB_TLS_SPEC, "$LIBS",
3116 [Define to the library containing __tls_get_addr/___tls_get_addr.])
3117 AC_MSG_RESULT($LIBS)
3120 LDFLAGS="$save_LDFLAGS"
3123 if test $set_have_as_tls = yes ; then
3124 AC_DEFINE(HAVE_AS_TLS, 1,
3125 [Define if your assembler and linker support thread-local storage.])
3128 # Target-specific assembler checks.
3130 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3131 gcc_cv_ld_static_dynamic=no
3132 gcc_cv_ld_static_option='-Bstatic'
3133 gcc_cv_ld_dynamic_option='-Bdynamic'
3134 if test $in_tree_ld = yes ; then
3135 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3136 gcc_cv_ld_static_dynamic=yes
3138 elif test x$gcc_cv_ld != x; then
3139 # Check if linker supports -Bstatic/-Bdynamic option
3140 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3141 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3142 gcc_cv_ld_static_dynamic=yes
3145 # Tru64 UNIX support -noso/-so_archive instead of -Bstatic/-Bdynamic.
3147 gcc_cv_ld_static_dynamic=yes
3148 gcc_cv_ld_static_option="-noso"
3149 gcc_cv_ld_dynamic_option="-so_archive"
3151 # IRIX 6 ld supports -Bstatic/-Bdynamic.
3153 gcc_cv_ld_static_dynamic=yes
3155 # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3157 gcc_cv_ld_static_dynamic=yes
3162 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3163 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3164 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3165 AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3166 [Define to the linker option to disable use of shared objects.])
3167 AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3168 [Define to the linker option to enable use of shared objects.])
3170 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3172 if test x"$demangler_in_ld" = xyes; then
3173 AC_MSG_CHECKING(linker --demangle support)
3174 gcc_cv_ld_demangle=no
3175 if test $in_tree_ld = yes; then
3176 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3177 gcc_cv_ld_demangle=yes
3179 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3180 # Check if the GNU linker supports --demangle option
3181 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3182 gcc_cv_ld_demangle=yes
3185 if test x"$gcc_cv_ld_demangle" = xyes; then
3186 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3187 [Define if your linker supports --demangle option.])
3189 AC_MSG_RESULT($gcc_cv_ld_demangle)
3192 AC_MSG_CHECKING(linker plugin support)
3194 if test -f liblto_plugin.la; then
3195 if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3196 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
3198 elif test "$ld_is_gold" = yes -a "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -eq 20; then
3202 elif test x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld" && echo "$ld_ver" | grep GNU > /dev/null; then
3203 # Require GNU ld or gold 2.21+ for plugin support by default.
3204 if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3206 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3207 elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3210 elif test x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" != x"$gcc_cv_ld"; then
3211 # Allow -fuse-linker-plugin if plugin linker differs from
3212 # default/specified linker.
3216 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3217 [Define to the level of your linker's plugin support.])
3218 AC_MSG_RESULT($gcc_cv_lto_plugin)
3221 # All TARGET_ABI_OSF targets.
3222 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
3223 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3224 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3227 extbl $3, $2, $3 !lituse_bytoff!1
3228 ldq $2, a($29) !literal!1
3229 ldq $4, b($29) !literal!2
3230 ldq_u $3, 0($2) !lituse_base!1
3231 ldq $27, f($29) !literal!5
3232 jsr $26, ($27), f !lituse_jsr!5
3233 ldah $29, 0($26) !gpdisp!3
3234 lda $0, c($29) !gprel
3235 ldah $1, d($29) !gprelhigh
3236 lda $1, d($1) !gprellow
3237 lda $29, 0($29) !gpdisp!3],,
3238 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3239 [Define if your assembler supports explicit relocations.])])
3240 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3241 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3244 ldq $27, a($29) !literal!1
3245 jsr $26, ($27), a !lituse_jsrdirect!1],,
3246 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3247 [Define if your assembler supports the lituse_jsrdirect relocation.])])
3251 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3252 gcc_cv_as_cris_no_mul_bug,[2,15,91],
3253 [-no-mul-bug-abort], [.text],,
3254 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3255 [Define if your assembler supports the -no-mul-bug-abort option.])])
3259 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3260 [.register %g2, #scratch],,
3261 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3262 [Define if your assembler supports .register.])])
3264 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3266 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3267 [Define if your assembler supports -relax option.])])
3269 gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3270 gcc_cv_as_sparc_gotdata_op,,
3276 sethi %gdop_hix22(foo), %g1
3277 xor %g1, %gdop_lox10(foo), %g1
3278 ld [[%l7 + %g1]], %g2, %gdop(foo)],
3279 [if test x$gcc_cv_ld != x \
3280 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3281 if $gcc_cv_ld -v | grep GNU >/dev/null 2>&1; then
3282 if test x$gcc_cv_objdump != x; then
3283 if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3284 | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3285 gcc_cv_as_sparc_gotdata_op=no
3287 gcc_cv_as_sparc_gotdata_op=yes
3291 gcc_cv_as_sparc_gotdata_op=yes
3295 [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3296 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3298 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3299 gcc_cv_as_sparc_ua_pcrel,,
3307 .uaword %r_disp32(foo)],
3308 [if test x$gcc_cv_ld != x \
3309 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3310 gcc_cv_as_sparc_ua_pcrel=yes
3313 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3314 [Define if your assembler and linker support unaligned PC relative relocs.])
3316 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3317 gcc_cv_as_sparc_ua_pcrel_hidden,,
3322 .uaword %r_disp32(foo)
3323 .byte 0x32, 0x33, 0x34
3328 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3329 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3330 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3331 | grep ' 31000000 07323334' > /dev/null 2>&1; then
3332 if $gcc_cv_objdump -R conftest 2> /dev/null \
3333 | grep 'DISP32' > /dev/null 2>&1; then
3336 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3340 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3341 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3342 ]) # unaligned pcrel relocs
3344 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3345 gcc_cv_as_sparc_offsetable_lo10,,
3348 or %g1, %lo(ab) + 12, %g1
3349 or %g1, %lo(ab + 12), %g1],
3350 [if test x$gcc_cv_objdump != x \
3351 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3352 | grep ' 82106000 82106000' > /dev/null 2>&1; then
3353 gcc_cv_as_sparc_offsetable_lo10=yes
3355 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3356 [Define if your assembler supports offsetable %lo().])])
3360 i[34567]86-*-* | x86_64-*-*)
3364 # Full C++ conformance when using a shared libstdc++-v3 requires some
3365 # support from the Cygwin DLL, which in more recent versions exports
3366 # wrappers to aid in interposing and redirecting operators new, delete,
3367 # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we
3368 # are configuring for a version of Cygwin that exports the wrappers.
3369 if test x$host = x$target; then
3370 AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3372 # Can't check presence of libc functions during cross-compile, so
3373 # we just have to assume we're building for an up-to-date target.
3374 gcc_ac_cygwin_dll_wrappers=yes
3376 AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3377 [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3378 [Define if you want to generate code by default that assumes that the
3379 Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3382 cygwin* | pe | mingw32*)
3383 # Recent binutils allows the three-operand form of ".comm" on PE. This
3384 # definition is used unconditionally to initialise the default state of
3385 # the target option variable that governs usage of the feature.
3386 gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3387 [2,19,52],,[.comm foo,1,32])
3388 AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3389 [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3390 [Define if your assembler supports specifying the alignment
3391 of objects allocated using the GAS .comm command.])
3392 # Used for DWARF 2 in PE
3393 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3394 gcc_cv_as_ix86_pe_secrel32,
3400 [if test x$gcc_cv_ld != x \
3401 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3402 gcc_cv_as_ix86_pe_secrel32=yes
3405 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3406 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3407 # Test if the assembler supports the extended form of the .section
3408 # directive that specifies section alignment. LTO support uses this,
3409 # but normally only after installation, so we warn but don't fail the
3410 # configure if LTO is enabled but the assembler does not support it.
3411 gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3412 [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3413 if test x$gcc_cv_as_section_has_align != xyes; then
3414 case ",$enable_languages," in
3416 AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3423 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3424 gcc_cv_as_ix86_filds,,,
3425 [filds mem; fists mem],,
3426 [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3427 [Define if your assembler uses filds and fists mnemonics.])])
3429 gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3430 gcc_cv_as_ix86_fildq,,,
3431 [fildq mem; fistpq mem],,
3432 [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3433 [Define if your assembler uses fildq and fistq mnemonics.])])
3435 gcc_GAS_CHECK_FEATURE([cmov syntax],
3436 gcc_cv_as_ix86_cmov_sun_syntax,,,
3437 [cmovl.l %edx, %eax],,
3438 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3439 [Define if your assembler supports the Sun syntax for cmov.])])
3441 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3442 gcc_cv_as_ix86_ffreep,,,
3444 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3445 [Define if your assembler supports the ffreep mnemonic.])])
3447 gcc_GAS_CHECK_FEATURE([.quad directive],
3448 gcc_cv_as_ix86_quad,,,
3450 [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
3451 [Define if your assembler supports the .quad directive.])])
3453 gcc_GAS_CHECK_FEATURE([sahf mnemonic],
3454 gcc_cv_as_ix86_sahf,,,
3457 [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
3458 [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
3460 gcc_GAS_CHECK_FEATURE([swap suffix],
3461 gcc_cv_as_ix86_swap,,,
3462 [movl.s %esp, %ebp],,
3463 [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
3464 [Define if your assembler supports the swap suffix.])])
3466 gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
3467 gcc_cv_as_ix86_diff_sect_delta,,,
3475 [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
3476 [Define if your assembler supports the subtraction of symbols in different sections.])])
3478 # These two are used unconditionally by i386.[ch]; it is to be defined
3479 # to 1 if the feature is present, 0 otherwise.
3480 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
3481 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
3487 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
3488 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
3489 [Define true if the assembler supports '.long foo@GOTOFF'.])
3491 gcc_GAS_CHECK_FEATURE([rep and lock prefix],
3492 gcc_cv_as_ix86_rep_lock_prefix,,,
3494 lock addl %edi, (%eax,%esi)
3495 lock orl $0, (%esp)],,
3496 [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
3497 [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
3502 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
3503 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
3505 addl r15 = @ltoffx(x#), gp
3507 ld8.mov r16 = [[r15]], x#],,
3508 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
3509 [Define if your assembler supports ltoffx and ldxmov relocations.])])
3515 *-*-aix*) conftest_s=' .machine "pwr5"
3519 gcc_GAS_CHECK_FEATURE([.machine directive support],
3520 gcc_cv_as_machine_directive,,,
3521 [ .machine ppc7400])
3522 if test x$gcc_cv_as_machine_directive != xyes; then
3523 echo "*** This target requires an assembler supporting \".machine\"" >&2
3524 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
3525 test x$build = x$target && exit 1
3529 *) conftest_s=' .machine power4
3534 gcc_GAS_CHECK_FEATURE([mfcr field support],
3535 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
3537 [AC_DEFINE(HAVE_AS_MFCRF, 1,
3538 [Define if your assembler supports mfcr field.])])
3541 *-*-aix*) conftest_s=' .machine "pwr5"
3544 *) conftest_s=' .machine power5
3549 gcc_GAS_CHECK_FEATURE([popcntb support],
3550 gcc_cv_as_powerpc_popcntb, [2,17,0],,
3552 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3553 [Define if your assembler supports popcntb field.])])
3556 *-*-aix*) conftest_s=' .machine "pwr5x"
3559 *) conftest_s=' .machine power5
3564 gcc_GAS_CHECK_FEATURE([fp round support],
3565 gcc_cv_as_powerpc_fprnd, [2,17,0],,
3567 [AC_DEFINE(HAVE_AS_FPRND, 1,
3568 [Define if your assembler supports fprnd.])])
3571 *-*-aix*) conftest_s=' .machine "pwr6"
3574 *) conftest_s=' .machine power6
3579 gcc_GAS_CHECK_FEATURE([move fp gpr support],
3580 gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
3582 [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3583 [Define if your assembler supports mffgpr and mftgpr.])])
3586 *-*-aix*) conftest_s=' .csect .text[[PR]]
3588 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3592 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3593 *) conftest_s=' .text
3595 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3598 gcc_GAS_CHECK_FEATURE([rel16 relocs],
3599 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3601 [AC_DEFINE(HAVE_AS_REL16, 1,
3602 [Define if your assembler supports R_PPC_REL16 relocs.])])
3605 *-*-aix*) conftest_s=' .machine "pwr6"
3608 *) conftest_s=' .machine power6
3613 gcc_GAS_CHECK_FEATURE([compare bytes support],
3614 gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
3616 [AC_DEFINE(HAVE_AS_CMPB, 1,
3617 [Define if your assembler supports cmpb.])])
3620 *-*-aix*) conftest_s=' .machine "pwr6"
3623 *) conftest_s=' .machine power6
3628 gcc_GAS_CHECK_FEATURE([decimal float support],
3629 gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
3631 [AC_DEFINE(HAVE_AS_DFP, 1,
3632 [Define if your assembler supports DFP instructions.])])
3635 *-*-aix*) conftest_s=' .machine "pwr7"
3638 *) conftest_s=' .machine power7
3643 gcc_GAS_CHECK_FEATURE([vector-scalar support],
3644 gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
3646 [AC_DEFINE(HAVE_AS_VSX, 1,
3647 [Define if your assembler supports VSX instructions.])])
3650 *-*-aix*) conftest_s=' .machine "pwr7"
3653 *) conftest_s=' .machine power7
3658 gcc_GAS_CHECK_FEATURE([popcntd support],
3659 gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
3661 [AC_DEFINE(HAVE_AS_POPCNTD, 1,
3662 [Define if your assembler supports POPCNTD instructions.])])
3665 *-*-aix*) conftest_s=' .csect .text[[PR]]
3667 *) conftest_s=' .text
3671 gcc_GAS_CHECK_FEATURE([lwsync support],
3672 gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
3674 [AC_DEFINE(HAVE_AS_LWSYNC, 1,
3675 [Define if your assembler supports LWSYNC instructions.])])
3678 *-*-aix*) conftest_s=' .machine "476"
3681 *) conftest_s=' .machine "476"
3686 gcc_GAS_CHECK_FEATURE([data cache invalidate support],
3687 gcc_cv_as_powerpc_dci, [9,99,0], -a32,
3689 [AC_DEFINE(HAVE_AS_DCI, 1,
3690 [Define if your assembler supports the DCI/ICI instructions.])])
3692 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3693 gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3694 [.gnu_attribute 4,1],,
3695 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3696 [Define if your assembler supports .gnu_attribute.])])
3698 gcc_GAS_CHECK_FEATURE([tls marker support],
3699 gcc_cv_as_powerpc_tls_markers, [2,20,0],,
3700 [ bl __tls_get_addr(x@tlsgd)],,
3701 [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
3702 [Define if your assembler supports arg info for __tls_get_addr.])])
3706 gcc_GAS_CHECK_FEATURE([.ref support],
3707 gcc_cv_as_aix_ref, [2.21.0],,
3708 [ .csect stuff[[rw]]
3714 [AC_DEFINE(HAVE_AS_REF, 1,
3715 [Define if your assembler supports .ref])])
3721 gcc_GAS_CHECK_FEATURE([explicit relocation support],
3722 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3723 [ lw $4,%gp_rel(foo)($4)],,
3724 [if test x$target_cpu_default = x
3725 then target_cpu_default=MASK_EXPLICIT_RELOCS
3726 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3728 gcc_GAS_CHECK_FEATURE([-mno-shared support],
3729 gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3730 [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3731 [Define if the assembler understands -mno-shared.])])
3733 gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3734 gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3735 [.gnu_attribute 4,1],,
3736 [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3737 [Define if your assembler supports .gnu_attribute.])])
3739 gcc_GAS_CHECK_FEATURE([.dtprelword support],
3740 gcc_cv_as_mips_dtprelword, [2,18,0],,
3741 [.section .tdata,"awT",@progbits
3745 .dtprelword x+0x8000],,
3746 [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3747 [Define if your assembler supports .dtprelword.])])
3749 gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
3750 gcc_cv_as_mips_dspr1_mult,,,
3760 [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
3761 [Define if your assembler supports DSPR1 mult.])])
3763 AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
3764 gcc_cv_as_ld_jalr_reloc=no
3765 if test $gcc_cv_as_mips_explicit_relocs = yes; then
3766 if test $in_tree_ld = yes ; then
3767 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
3768 && test $in_tree_ld_is_elf = yes; then
3769 gcc_cv_as_ld_jalr_reloc=yes
3771 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
3772 echo ' .ent x' > conftest.s
3773 echo 'x: ld $2,%got_disp(y)($3)' >> conftest.s
3774 echo ' ld $25,%call16(y)($28)' >> conftest.s
3775 echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s
3776 echo '1: jalr $25' >> conftest.s
3777 echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s
3778 echo '1: jalr $25' >> conftest.s
3779 echo ' .end x' >> conftest.s
3780 if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
3781 && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
3782 if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
3783 && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
3784 gcc_cv_as_ld_jalr_reloc=yes
3790 if test $gcc_cv_as_ld_jalr_reloc = yes; then
3791 if test x$target_cpu_default = x; then
3792 target_cpu_default=MASK_RELAX_PIC_CALLS
3794 target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
3797 AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
3799 AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
3800 [gcc_cv_ld_mips_personality_relaxation],
3801 [gcc_cv_ld_mips_personality_relaxation=no
3802 if test $in_tree_ld = yes ; then
3803 if test "$gcc_cv_gld_major_version" -eq 2 \
3804 -a "$gcc_cv_gld_minor_version" -ge 21 \
3805 -o "$gcc_cv_gld_major_version" -gt 2; then
3806 gcc_cv_ld_mips_personality_relaxation=yes
3808 elif test x$gcc_cv_as != x \
3809 -a x$gcc_cv_ld != x \
3810 -a x$gcc_cv_readelf != x ; then
3811 cat > conftest.s <<EOF
3813 .cfi_personality 0x80,indirect_ptr
3820 .section .data,"aw",@progbits
3824 if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
3825 && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
3826 if $gcc_cv_readelf -d conftest 2>&1 \
3827 | grep TEXTREL > /dev/null 2>&1; then
3829 elif $gcc_cv_readelf --relocs conftest 2>&1 \
3830 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
3833 gcc_cv_ld_mips_personality_relaxation=yes
3837 rm -f conftest.s conftest.o conftest])
3838 if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
3839 AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
3840 [Define if your linker can relax absolute .eh_frame personality
3841 pointers into PC-relative form.])
3846 # Mips and HP-UX need the GNU assembler.
3847 # Linux on IA64 might be able to use the Intel assembler.
3850 mips*-*-* | *-*-hpux* )
3851 if test x$gas_flag = xyes \
3852 || test x"$host" != x"$build" \
3853 || test ! -x "$gcc_cv_as" \
3854 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3857 echo "*** This configuration requires the GNU assembler" >&2
3863 # ??? Not all targets support dwarf2 debug_line, even within a version
3864 # of gas. Moreover, we need to emit a valid instruction to trigger any
3865 # info to the output file. So, as supported targets are added to gas 2.11,
3866 # add some instruction here to (also) show we expect this might work.
3867 # ??? Once 2.11 is released, probably need to add first known working
3868 # version to the per-target configury.
3870 alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze | mips \
3871 | pa | rs6000 | score | sparc | spu | xstormy16 | xtensa)
3881 if test x"$insn" != x; then
3883 .file 1 \"conftest.s\"
3886 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3887 gcc_cv_as_dwarf2_debug_line,
3888 [elf,2,11,0],, [$conftest_s],
3889 [if test x$gcc_cv_objdump != x \
3890 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3891 | grep debug_line > /dev/null 2>&1; then
3892 gcc_cv_as_dwarf2_debug_line=yes
3895 # The .debug_line file table must be in the exact order that
3896 # we specified the files, since these indices are also used
3897 # by DW_AT_decl_file. Approximate this test by testing if
3898 # the assembler bitches if the same index is assigned twice.
3899 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3900 gcc_cv_as_dwarf2_file_buggy,,,
3904 if test $gcc_cv_as_dwarf2_debug_line = yes \
3905 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3906 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3907 [Define if your assembler supports dwarf2 .file/.loc directives,
3908 and preserves file table indices exactly as given.])
3911 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3912 gcc_cv_as_gdwarf2_flag,
3913 [elf,2,11,0], [--gdwarf2], [$insn],,
3914 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3915 [Define if your assembler supports the --gdwarf2 option.])])
3917 gcc_GAS_CHECK_FEATURE([--gstabs option],
3918 gcc_cv_as_gstabs_flag,
3919 [elf,2,11,0], [--gstabs], [$insn],
3920 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3921 # and warns about it, but still exits successfully. So check for
3923 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3925 else gcc_cv_as_gstabs_flag=yes
3927 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3928 [Define if your assembler supports the --gstabs option.])])
3930 gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3931 gcc_cv_as_debug_prefix_map_flag,
3932 [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3933 [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3934 [Define if your assembler supports the --debug-prefix-map option.])])
3937 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3940 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3941 [Define if your assembler supports .lcomm with an alignment field.])])
3943 AC_ARG_ENABLE(gnu-unique-object,
3944 [AS_HELP_STRING([--enable-gnu-unique-object],
3945 [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
3946 [case $enable_gnu_unique_object in
3948 *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
3949 Valid choices are 'yes' and 'no'.]) ;;
3951 [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
3953 [.type foo, @gnu_unique_object],,
3954 # Also check for ld.so support, i.e. glibc 2.11 or higher.
3955 [[if test x$host = x$build -a x$host = x$target &&
3956 ldd --version 2>/dev/null &&
3957 glibcver=`ldd --version 2>/dev/null | sed 's/.* //;q'`; then
3958 glibcmajor=`expr "$glibcver" : "\([0-9]*\)"`
3959 glibcminor=`expr "$glibcver" : "[2-9]*\.\([0-9]*\)"`
3960 glibcnum=`expr $glibcmajor \* 1000 + $glibcminor`
3961 if test "$glibcnum" -ge 2011 ; then
3962 enable_gnu_unique_object=yes
3965 if test x$enable_gnu_unique_object = xyes; then
3966 AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
3967 [Define if your assembler supports @gnu_unique_object.])
3970 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3971 [gcc_cv_as_line_zero],
3972 [gcc_cv_as_line_zero=no
3973 if test $in_tree_gas = yes; then
3974 gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3975 elif test "x$gcc_cv_as" != x; then
3976 { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3977 if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3978 test "x`cat conftest.out`" = x
3980 gcc_cv_as_line_zero=yes
3982 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3983 cat conftest.s >&AS_MESSAGE_LOG_FD
3984 echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3985 cat conftest.out >&AS_MESSAGE_LOG_FD
3987 rm -f conftest.o conftest.s conftest.out
3989 if test "x$gcc_cv_as_line_zero" = xyes; then
3990 AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3991 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3994 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3995 gcc_cv_ld_eh_frame_hdr=no
3996 if test $in_tree_ld = yes ; then
3997 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3998 && test $in_tree_ld_is_elf = yes; then
3999 gcc_cv_ld_eh_frame_hdr=yes
4001 elif test x$gcc_cv_ld != x; then
4002 if echo "$ld_ver" | grep GNU > /dev/null; then
4003 # Check if linker supports --eh-frame-hdr option
4004 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4005 gcc_cv_ld_eh_frame_hdr=yes
4010 # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4011 if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4012 gcc_cv_ld_eh_frame_hdr=yes
4018 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4019 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4020 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4021 [Define if your linker supports .eh_frame_hdr.])
4023 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4025 AC_MSG_CHECKING(linker position independent executable support)
4027 if test $in_tree_ld = yes ; then
4028 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
4029 && test $in_tree_ld_is_elf = yes; then
4032 elif test x$gcc_cv_ld != x; then
4033 # Check if linker supports -pie option
4034 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4038 if test x"$gcc_cv_ld_pie" = xyes; then
4039 AC_DEFINE(HAVE_LD_PIE, 1,
4040 [Define if your linker supports -pie option.])
4042 AC_MSG_RESULT($gcc_cv_ld_pie)
4044 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4045 gcc_cv_ld_eh_gc_sections=no
4046 if test $in_tree_ld = yes ; then
4047 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4048 && test $in_tree_ld_is_elf = yes; then
4049 gcc_cv_ld_eh_gc_sections=yes
4051 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4052 cat > conftest.s <<EOF
4055 .type _start, @function
4058 .size _start, .-_start
4059 .section .text.foo,"ax",@progbits
4060 .type foo, @function
4064 .section .gcc_except_table.foo,"a",@progbits
4067 .section .eh_frame,"a",@progbits
4070 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4071 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4072 | grep "gc-sections option ignored" > /dev/null; then
4073 gcc_cv_ld_eh_gc_sections=no
4074 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4075 | grep gcc_except_table > /dev/null; then
4076 gcc_cv_ld_eh_gc_sections=yes
4077 # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4078 if test x$gcc_cv_as_comdat_group != xyes; then
4079 gcc_cv_ld_eh_gc_sections=no
4080 cat > conftest.s <<EOF
4083 .type _start, @function
4086 .size _start, .-_start
4087 .section .gnu.linkonce.t.foo,"ax",@progbits
4088 .type foo, @function
4092 .section .gcc_except_table.foo,"a",@progbits
4095 .section .eh_frame,"a",@progbits
4098 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4099 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4100 | grep "gc-sections option ignored" > /dev/null; then
4101 gcc_cv_ld_eh_gc_sections=no
4102 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4103 | grep gcc_except_table > /dev/null; then
4104 gcc_cv_ld_eh_gc_sections=yes
4110 rm -f conftest.s conftest.o conftest
4114 # ??? This apparently exposes a binutils bug with PC-relative relocations.
4115 gcc_cv_ld_eh_gc_sections=no
4118 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
4119 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
4120 [Define if your linker supports garbage collection of
4121 sections in presence of EH frames.])
4123 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
4125 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
4126 gcc_cv_ld_eh_gc_sections_bug=no
4127 if test $in_tree_ld = yes ; then
4128 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
4129 && test $in_tree_ld_is_elf = yes; then
4130 gcc_cv_ld_eh_gc_sections_bug=yes
4132 elif test x$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
4133 gcc_cv_ld_eh_gc_sections_bug=yes
4134 cat > conftest.s <<EOF
4137 .type _start, @function
4140 .size _start, .-_start
4141 .section .text.startup.foo,"ax",@progbits
4142 .type foo, @function
4146 .section .gcc_except_table.foo,"a",@progbits
4149 .section .eh_frame,"a",@progbits
4152 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4153 if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4154 | grep "gc-sections option ignored" > /dev/null; then
4156 elif $gcc_cv_objdump -h conftest 2> /dev/null \
4157 | grep gcc_except_table > /dev/null; then
4158 gcc_cv_ld_eh_gc_sections_bug=no
4161 rm -f conftest.s conftest.o conftest
4163 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
4164 AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
4165 [Define if your linker has buggy garbage collection of
4166 sections support when .text.startup.foo like sections are used.])
4168 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
4174 AC_CACHE_CHECK(linker --as-needed support,
4175 gcc_cv_ld_as_needed,
4176 [gcc_cv_ld_as_needed=no
4177 if test $in_tree_ld = yes ; then
4178 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4179 && test $in_tree_ld_is_elf = yes; then
4180 gcc_cv_ld_as_needed=yes
4182 elif test x$gcc_cv_ld != x; then
4183 # Check if linker supports --as-needed and --no-as-needed options
4184 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
4185 gcc_cv_ld_as_needed=yes
4189 if test x"$gcc_cv_ld_as_needed" = xyes; then
4190 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
4191 [Define if your linker supports --as-needed and --no-as-needed options.])
4194 case "$target:$tm_file" in
4195 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
4196 AC_CACHE_CHECK(linker support for omitting dot symbols,
4197 gcc_cv_ld_no_dot_syms,
4198 [gcc_cv_ld_no_dot_syms=no
4199 if test $in_tree_ld = yes ; then
4200 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
4201 gcc_cv_ld_no_dot_syms=yes
4203 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4204 cat > conftest1.s <<EOF
4208 cat > conftest2.s <<EOF
4209 .section ".opd","aw"
4214 .quad .LEfoo,.TOC.@tocbase,0
4220 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4221 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4222 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
4223 gcc_cv_ld_no_dot_syms=yes
4225 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
4228 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
4229 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
4230 [Define if your PowerPC64 linker only needs function descriptor syms.])
4233 AC_CACHE_CHECK(linker large toc support,
4234 gcc_cv_ld_large_toc,
4235 [gcc_cv_ld_large_toc=no
4236 if test $in_tree_ld = yes ; then
4237 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
4238 gcc_cv_ld_large_toc=yes
4240 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4241 cat > conftest.s <<EOF
4242 .section ".tbss","awT",@nobits
4248 addis 9,13,ie0@got@tprel@ha
4249 ld 9,ie0@got@tprel@l(9)
4251 if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
4252 && $gcc_cv_ld -melf64ppc --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
4253 gcc_cv_ld_large_toc=yes
4255 rm -f conftest conftest.o conftest.s
4258 if test x"$gcc_cv_ld_large_toc" = xyes; then
4259 AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
4260 [Define if your PowerPC64 linker supports a large TOC.])
4265 AC_CACHE_CHECK(linker --build-id support,
4267 [gcc_cv_ld_buildid=no
4268 if test $in_tree_ld = yes ; then
4269 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4270 "$gcc_cv_gld_minor_version" -ge 18 -o \
4271 "$gcc_cv_gld_major_version" -gt 2 \
4272 && test $in_tree_ld_is_elf = yes; then
4273 gcc_cv_ld_buildid=yes
4275 elif test x$gcc_cv_ld != x; then
4276 if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
4277 gcc_cv_ld_buildid=yes
4280 if test x"$gcc_cv_ld_buildid" = xyes; then
4281 AC_DEFINE(HAVE_LD_BUILDID, 1,
4282 [Define if your linker supports --build-id.])
4285 AC_ARG_ENABLE(linker-build-id,
4286 [ --enable-linker-build-id
4287 compiler will always pass --build-id to linker],
4289 enable_linker_build_id=no)
4291 if test x"$enable_linker_build_id" = xyes; then
4292 if test x"$gcc_cv_ld_buildid" = xyes; then
4293 AC_DEFINE(ENABLE_LD_BUILDID, 1,
4294 [Define if gcc should always pass --build-id to linker.])
4296 AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
4300 # In binutils 2.21, GNU ld gained support for new emulations fully
4301 # supporting the Solaris 2 ABI. Detect their presence in the linker used.
4302 AC_CACHE_CHECK(linker *_sol2 emulation support,
4303 gcc_cv_ld_sol2_emulation,
4304 [gcc_cv_ld_sol2_emulation=no
4305 if test $in_tree_ld = yes ; then
4306 if test "$gcc_cv_gld_major_version" -eq 2 -a \
4307 "$gcc_cv_gld_minor_version" -ge 21 -o \
4308 "$gcc_cv_gld_major_version" -gt 2 \
4309 && test $in_tree_ld_is_elf = yes; then
4310 gcc_cv_ld_sol2_emulation=yes
4312 elif test x$gcc_cv_ld != x; then
4313 if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
4314 grep _sol2 > /dev/null; then
4315 gcc_cv_ld_sol2_emulation=yes
4318 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
4319 AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
4320 [Define if your linker supports the *_sol2 emulations.])
4323 AC_CACHE_CHECK(linker --sysroot support,
4325 [gcc_cv_ld_sysroot=no
4326 if test $in_tree_ld = yes ; then
4327 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
4328 gcc_cv_ld_sysroot=yes
4330 elif test x$gcc_cv_ld != x; then
4331 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
4332 gcc_cv_ld_sysroot=yes
4335 if test x"$gcc_cv_ld_sysroot" = xyes; then
4336 AC_DEFINE(HAVE_LD_SYSROOT, 1,
4337 [Define if your linker supports --sysroot.])
4340 if test x$with_sysroot = x && test x$host = x$target \
4341 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4342 && test "$prefix" != "NONE"; then
4343 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4344 [Define to PREFIX/include if cpp should also search that directory.])
4347 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
4348 if test "x$with_headers" != x; then
4349 target_header_dir=$with_headers
4350 elif test "x$with_sysroot" = x; then
4351 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
4352 elif test "x$with_build_sysroot" != "x"; then
4353 target_header_dir="${with_build_sysroot}/usr/include"
4354 elif test "x$with_sysroot" = xyes; then
4355 target_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
4357 target_header_dir="${with_sysroot}/usr/include"
4360 target_header_dir=/usr/include
4363 # Test for stack protector support in target C library.
4364 AC_CACHE_CHECK(__stack_chk_fail in target C library,
4365 gcc_cv_libc_provides_ssp,
4366 [gcc_cv_libc_provides_ssp=no
4368 *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
4369 [# glibc 2.4 and later provides __stack_chk_fail and
4370 # either __stack_chk_guard, or TLS access to stack guard canary.
4371 if test -f $target_header_dir/features.h \
4372 && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
4373 $target_header_dir/features.h > /dev/null; then
4374 if $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
4375 $target_header_dir/features.h > /dev/null; then
4376 gcc_cv_libc_provides_ssp=yes
4377 elif $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+2' \
4378 $target_header_dir/features.h > /dev/null \
4379 && $EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
4380 $target_header_dir/features.h > /dev/null; then
4381 gcc_cv_libc_provides_ssp=yes
4382 elif $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
4383 $target_header_dir/features.h > /dev/null && \
4384 test -f $target_header_dir/bits/uClibc_config.h && \
4385 $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
4386 $target_header_dir/bits/uClibc_config.h > /dev/null; then
4387 gcc_cv_libc_provides_ssp=yes
4392 # Avoid complicated tests (see
4393 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
4394 # simply assert that glibc does provide this, which is true for all
4395 # realistically usable GNU/Hurd configurations.
4396 gcc_cv_libc_provides_ssp=yes;;
4397 *-*-darwin* | *-*-freebsd*)
4398 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
4399 [echo "no __stack_chk_fail on this target"])
4401 *) gcc_cv_libc_provides_ssp=no ;;
4404 if test x$gcc_cv_libc_provides_ssp = xyes; then
4405 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
4406 [Define if your target C library provides stack protector support])
4409 # Test for <sys/sdt.h> on the target.
4410 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
4411 AC_MSG_CHECKING(sys/sdt.h in the target C library)
4413 if test -f $target_header_dir/sys/sdt.h; then
4414 AC_DEFINE(HAVE_SYS_SDT_H, 1,
4415 [Define if your target C library provides sys/sdt.h])
4417 AC_MSG_RESULT($have_sys_sdt_h)
4419 # Check if TFmode long double should be used by default or not.
4420 # Some glibc targets used DFmode long double, but with glibc 2.4
4421 # and later they can use TFmode.
4423 powerpc*-*-linux* | \
4427 AC_ARG_WITH(long-double-128,
4428 [ --with-long-double-128 Use 128-bit long double by default.],
4429 gcc_cv_target_ldbl128="$with_long_double_128",
4430 [[gcc_cv_target_ldbl128=no
4431 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
4432 $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
4433 && gcc_cv_target_ldbl128=yes
4437 if test x$gcc_cv_target_ldbl128 = xyes; then
4438 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
4439 [Define if TFmode long double should be the default])
4442 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
4443 gcc_cv_target_dl_iterate_phdr=unknown
4446 # <link.h> needs both a dl_iterate_phdr declaration and support for
4447 # compilation with largefile support.
4448 if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
4449 && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
4450 gcc_cv_target_dl_iterate_phdr=yes
4452 gcc_cv_target_dl_iterate_phdr=no
4456 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
4457 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
4458 AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
4459 [Define if your target C library provides the `dl_iterate_phdr' function.])
4461 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
4463 # Find out what GC implementation we want, or may, use.
4465 [ --with-gc={page,zone} choose the garbage collection mechanism to use
4473 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
4476 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
4481 echo "Using $GGC for garbage collection."
4483 # Libraries to use on the host. This will normally be set by the top
4484 # level Makefile. Here we simply capture the value for our Makefile.
4485 if test -z "${HOST_LIBS+set}"; then
4490 # Use the system's zlib library.
4492 zlibinc="-I\$(srcdir)/../zlib"
4493 AC_ARG_WITH(system-zlib,
4494 [ --with-system-zlib use installed libz],
4501 dnl Very limited version of automake's enable-maintainer-mode
4503 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4504 dnl maintainer-mode is disabled by default
4505 AC_ARG_ENABLE(maintainer-mode,
4506 [ --enable-maintainer-mode
4507 enable make rules and dependencies not useful
4508 (and sometimes confusing) to the casual installer],
4509 maintainer_mode=$enableval,
4512 AC_MSG_RESULT($maintainer_mode)
4514 if test "$maintainer_mode" = "yes"; then
4525 # Make empty files to contain the specs and options for each language.
4526 # Then add #include lines to for a compiler that has specs and/or options.
4532 # These (without "all_") are set in each config-lang.in.
4533 # `language' must be a single word so is spelled singularly.
4536 all_outputs='Makefile'
4537 # List of language makefile fragments.
4539 # Additional files for gengtype
4540 all_gtfiles="$target_gtfiles"
4542 # These are the languages that are set in --enable-languages,
4543 # and are available in the GCC tree.
4544 all_selected_languages=
4546 # Add the language fragments.
4547 # Languages are added via two mechanisms. Some information must be
4548 # recorded in makefile variables, these are defined in config-lang.in.
4549 # We accumulate them and plug them into the main Makefile.
4550 # The other mechanism is a set of hooks for each of the main targets
4551 # like `clean', `install', etc.
4553 language_hooks="Make-hooks"
4555 for lang in ${srcdir}/*/config-lang.in
4558 test "$lang" = "${srcdir}/*/config-lang.in" && continue
4560 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
4561 if test "x$lang_alias" = x
4563 echo "$lang doesn't set \$language." 1>&2
4566 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
4567 subdirs="$subdirs $subdir"
4569 # $gcc_subdir is where the gcc integration files are to be found
4570 # for a language, both for internal compiler purposes (compiler
4571 # sources implementing front-end to GCC tree converters), and for
4572 # build infrastructure purposes (Make-lang.in, etc.)
4574 # This will be <subdir> (relative to $srcdir) if a line like
4575 # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
4576 # is found in <langdir>/config-lang.in, and will remain <langdir>
4579 # Except for the language alias (fetched above), the regular
4580 # "config-lang.in" contents are always retrieved from $gcc_subdir,
4581 # so a <langdir>/config-lang.in setting gcc_subdir typically sets
4582 # only this and the language alias.
4584 gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^ ]*\).*$,\1,p' $lang`
4585 if [ "$gcc_subdir" = "" ]; then
4586 gcc_subdir="$subdir"
4589 case ",$enable_languages," in
4591 all_selected_languages="$all_selected_languages $lang_alias"
4592 if test -f $srcdir/$gcc_subdir/lang-specs.h; then
4593 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
4605 . ${srcdir}/$gcc_subdir/config-lang.in
4606 if test "x$language" = x
4608 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
4613 case ",$enable_languages," in
4616 for i in $subdir_requires; do
4617 test -f "${srcdir}/$i/config-lang.in" && continue
4625 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
4626 if test -f $srcdir/$gcc_subdir/lang.opt; then
4627 lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
4628 all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
4630 if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
4631 lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
4633 all_languages="$all_languages $language"
4634 all_compilers="$all_compilers $compilers"
4635 all_outputs="$all_outputs $outputs"
4636 all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
4637 case ",$enable_languages," in
4639 AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
4641 AC_SUBST(enable_lto)
4647 # Pick up gtfiles for c
4649 . ${srcdir}/c-config-lang.in
4650 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
4653 for language in $all_selected_languages
4655 check_languages="$check_languages check-$language"
4658 # We link each language in with a set of hooks, reached indirectly via
4659 # lang.${target}. Only do so for selected languages.
4663 target_list="all.cross start.encap rest.encap tags \
4664 install-common install-man install-info install-pdf install-html dvi \
4665 pdf html uninstall info man srcextra srcman srcinfo \
4666 mostlyclean clean distclean maintainer-clean install-plugin"
4668 for t in $target_list
4671 for lang in $all_selected_languages
4675 echo "lang.$t: $x" >> Make-hooks
4679 # Option include files
4682 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
4683 option_includes="option-includes.mk"
4684 AC_SUBST_FILE(option_includes)
4692 echo "dir ." > .gdbinit
4693 echo "dir ${srcdir}" >> .gdbinit
4694 if test x$gdb_needs_out_file_path = xyes
4696 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
4698 if test "x$subdirs" != x; then
4701 echo "dir ${srcdir}/$s" >> .gdbinit
4704 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
4706 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
4707 AC_SUBST(gcc_tooldir)
4710 # Find a directory in which to install a shared libgcc.
4712 AC_ARG_ENABLE(version-specific-runtime-libs,
4713 [ --enable-version-specific-runtime-libs
4714 specify that runtime libraries should be
4715 installed in a compiler-specific directory])
4717 AC_ARG_WITH(slibdir,
4718 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
4719 slibdir="$with_slibdir",
4720 if test "${enable_version_specific_runtime_libs+set}" = set; then
4721 slibdir='$(libsubdir)'
4722 elif test "$host" != "$target"; then
4723 slibdir='$(build_tooldir)/lib'
4729 # Substitute configuration variables
4732 AC_SUBST(all_compilers)
4733 AC_SUBST(all_gtfiles)
4734 AC_SUBST(all_lang_makefrags)
4735 AC_SUBST(all_languages)
4736 AC_SUBST(all_selected_languages)
4737 AC_SUBST(build_exeext)
4738 AC_SUBST(build_install_headers_dir)
4739 AC_SUBST(build_xm_file_list)
4740 AC_SUBST(build_xm_include_list)
4741 AC_SUBST(build_xm_defines)
4742 AC_SUBST(build_file_translate)
4743 AC_SUBST(check_languages)
4744 AC_SUBST(cpp_install_dir)
4745 AC_SUBST(xmake_file)
4746 AC_SUBST(tmake_file)
4747 AC_SUBST(TM_ENDIAN_CONFIG)
4748 AC_SUBST(TM_MULTILIB_CONFIG)
4749 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
4750 AC_SUBST(extra_gcc_objs)
4751 AC_SUBST(user_headers_inc_next_pre)
4752 AC_SUBST(user_headers_inc_next_post)
4753 AC_SUBST(extra_headers_list)
4754 AC_SUBST(extra_objs)
4755 AC_SUBST(extra_parts)
4756 AC_SUBST(extra_passes)
4757 AC_SUBST(extra_programs)
4758 AC_SUBST(float_h_file)
4759 AC_SUBST(gcc_config_arguments)
4760 AC_SUBST(gcc_gxx_include_dir)
4761 AC_SUBST(host_exeext)
4762 AC_SUBST(host_xm_file_list)
4763 AC_SUBST(host_xm_include_list)
4764 AC_SUBST(host_xm_defines)
4765 AC_SUBST(out_host_hook_obj)
4767 AC_SUBST(lang_opt_files)
4768 AC_SUBST(lang_specs_files)
4769 AC_SUBST(lang_tree_files)
4770 AC_SUBST(local_prefix)
4772 AC_SUBST(objc_boehm_gc)
4774 AC_SUBST(out_object_file)
4775 AC_SUBST(thread_file)
4776 AC_SUBST(tm_file_list)
4777 AC_SUBST(tm_include_list)
4778 AC_SUBST(tm_defines)
4779 AC_SUBST(tm_p_file_list)
4780 AC_SUBST(tm_p_include_list)
4781 AC_SUBST(xm_file_list)
4782 AC_SUBST(xm_include_list)
4783 AC_SUBST(xm_defines)
4784 AC_SUBST(use_gcc_stdint)
4785 AC_SUBST(c_target_objs)
4786 AC_SUBST(cxx_target_objs)
4787 AC_SUBST(fortran_target_objs)
4788 AC_SUBST(target_cpu_default)
4790 AC_SUBST_FILE(language_hooks)
4793 if test x${build} = x${host} ; then
4794 if test x${host} = x${target} ; then
4795 echo "Links are now set up to build a native compiler for ${target}." 1>&2
4797 echo "Links are now set up to build a cross-compiler" 1>&2
4798 echo " from ${host} to ${target}." 1>&2
4801 if test x${host} = x${target} ; then
4802 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
4803 echo " for ${target}." 1>&2
4805 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
4806 echo " from ${host} to ${target}." 1>&2
4810 AC_ARG_VAR(GMPLIBS,[How to link GMP])
4811 AC_ARG_VAR(GMPINC,[How to find GMP include files])
4813 AC_ARG_VAR(PPLLIBS,[How to link PPL])
4814 AC_ARG_VAR(PPLINC,[How to find PPL include files])
4816 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
4817 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
4818 if test "x${CLOOGLIBS}" != "x" ; then
4819 AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
4822 # Check for plugin support
4823 AC_ARG_ENABLE(plugin,
4824 [ --enable-plugin enable plugin support],
4825 enable_plugin=$enableval,
4826 enable_plugin=yes; default_plugin=yes)
4832 if test x$build = x$host; then
4833 export_sym_check="nm${exeext} -g"
4834 elif test x$host = x$target; then
4835 export_sym_check="$gcc_cv_nm -g"
4841 if test x$build = x$host; then
4842 export_sym_check="objdump${exeext} -T"
4843 elif test x$host = x$target; then
4844 export_sym_check="$gcc_cv_objdump -T"
4851 if test x"$enable_plugin" = x"yes"; then
4853 AC_MSG_CHECKING([for exported symbols])
4854 if test "x$export_sym_check" != x; then
4855 echo "int main() {return 0;} int foobar() {return 0;}" > conftest.c
4856 ${CC} ${CFLAGS} ${LDFLAGS} conftest.c -o conftest > /dev/null 2>&1
4857 if $export_sym_check conftest | grep foobar > /dev/null; then
4858 : # No need to use a flag
4859 AC_MSG_RESULT([yes])
4861 AC_MSG_RESULT([yes])
4862 AC_MSG_CHECKING([for -rdynamic])
4863 ${CC} ${CFLAGS} ${LDFLAGS} -rdynamic conftest.c -o conftest > /dev/null 2>&1
4864 if $export_sym_check conftest | grep foobar > /dev/null; then
4866 pluginlibs="-rdynamic"
4871 AC_MSG_RESULT([$plugin_rdynamic])
4874 AC_MSG_RESULT([unable to check])
4879 AC_SEARCH_LIBS([dlopen], [dl])
4880 if test x"$ac_cv_search_dlopen" = x"-ldl"; then
4881 pluginlibs="$pluginlibs -ldl"
4885 # Check that we can build shared objects with -fPIC -shared
4886 saved_LDFLAGS="$LDFLAGS"
4887 saved_CFLAGS="$CFLAGS"
4890 CFLAGS=`echo $CFLAGS | sed s/-mdynamic-no-pic//g`
4891 CFLAGS="$CFLAGS -fPIC"
4892 LDFLAGS="$LDFLAGS -shared -undefined dynamic_lookup"
4895 CFLAGS="$CFLAGS -fPIC"
4896 LDFLAGS="$LDFLAGS -fPIC -shared"
4899 AC_MSG_CHECKING([for -fPIC -shared])
4901 [extern int X;],[return X == 0;],
4902 [AC_MSG_RESULT([yes]); have_pic_shared=yes],
4903 [AC_MSG_RESULT([no]); have_pic_shared=no])
4904 if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
4908 LDFLAGS="$saved_LDFLAGS"
4909 CFLAGS="$saved_CFLAGS"
4911 # If plugin support had been requested but not available, fail.
4912 if test x"$enable_plugin" = x"no" ; then
4913 if test x"$default_plugin" != x"yes"; then
4915 Building GCC with plugin support requires a host that supports
4916 -fPIC, -shared, -ldl and -rdynamic.])
4921 AC_SUBST(pluginlibs)
4922 AC_SUBST(enable_plugin)
4923 if test x"$enable_plugin" = x"yes"; then
4924 AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
4928 AC_ARG_ENABLE(libquadmath-support,
4929 [AS_HELP_STRING([--disable-libquadmath-support],
4930 [disable libquadmath support for Fortran])],
4931 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
4932 ENABLE_LIBQUADMATH_SUPPORT=yes)
4933 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
4934 AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
4935 [Define to 1 to enable libquadmath support])
4939 # Configure the subdirectories
4940 # AC_CONFIG_SUBDIRS($subdirs)
4942 # Create the Makefile
4943 # and configure language subdirectories
4944 AC_CONFIG_FILES($all_outputs)
4946 AC_CONFIG_COMMANDS([default],
4948 case ${CONFIG_HEADERS} in
4949 *auto-host.h:config.in*)
4952 # Make sure all the subdirs exist.
4953 for d in $subdirs doc build c-family
4955 test -d $d || mkdir $d
4958 [subdirs='$subdirs'])