2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
5 # 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 2, 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 COPYING. If not, write to the Free
21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 libstdcxx_incdir='include/c++/$(version)'
141 if test x$host != x$target; then
142 libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
144 changequote(<<, >>)dnl
145 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/$libstdcxx_incdir"
150 AC_ARG_WITH(cpp_install_dir,
151 [ --with-cpp-install-dir=DIR
152 install the user visible C preprocessor in DIR
153 (relative to PREFIX) as well as PREFIX/bin],
154 [if test x$withval = xyes; then
155 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
156 elif test x$withval != xno; then
157 cpp_install_dir=$withval
160 # We would like to our source tree to be readonly. However when releases or
161 # pre-releases are generated, the flex/bison generated files as well as the
162 # various formats of manuals need to be included along with the rest of the
163 # sources. Therefore we have --enable-generated-files-in-srcdir to do
166 AC_MSG_CHECKING([whether to place generated files in the source directory])
167 dnl generated-files-in-srcdir is disabled by default
168 AC_ARG_ENABLE(generated-files-in-srcdir,
169 [ --enable-generated-files-in-srcdir
170 put copies of generated files in source dir
171 intended for creating source tarballs for users
172 without texinfo bison or flex.],
173 generated_files_in_srcdir=$enableval,
174 generated_files_in_srcdir=no)
176 AC_MSG_RESULT($generated_files_in_srcdir)
178 if test "$generated_files_in_srcdir" = "yes"; then
185 # -------------------
186 # Find default linker
187 # -------------------
191 [ --with-gnu-ld arrange to work with GNU ld.],
192 gnu_ld_flag="$with_gnu_ld",
195 # With pre-defined ld
197 [ --with-ld arrange to use the specified ld (full pathname)],
198 DEFAULT_LINKER="$with_ld")
199 if test x"${DEFAULT_LINKER+set}" = x"set"; then
200 if test ! -x "$DEFAULT_LINKER"; then
201 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
202 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
205 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
206 [Define to enable the use of a default linker.])
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 AC_MSG_CHECKING([whether a default assembler was specified])
250 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
251 if test x"$gas_flag" = x"no"; then
252 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
254 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
264 # If a non-executable a.out is present (e.g. created by GNU as above even if
265 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
266 # file, even when creating an executable, so an execution test fails.
267 # Remove possible default executable files to avoid this.
269 # FIXME: This really belongs into AC_PROG_CC and can be removed once
270 # Autoconf includes it.
271 rm -f a.out a.exe b.out
273 # Find the native compiler
276 # autoconf is lame and doesn't give us any substitution variable for this.
277 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
278 NO_MINUS_C_MINUS_O=yes
280 OUTPUT_OPTION='-o $@'
282 AC_SUBST(NO_MINUS_C_MINUS_O)
283 AC_SUBST(OUTPUT_OPTION)
285 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
286 # optimizations to be activated explicitly by the toplevel.
289 *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
293 # -------------------------
294 # Check C compiler features
295 # -------------------------
300 # sizeof(char) is 1 by definition.
301 AC_CHECK_SIZEOF(void *)
302 AC_CHECK_SIZEOF(short)
304 AC_CHECK_SIZEOF(long)
305 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
306 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
308 # ---------------------
309 # Warnings and checking
310 # ---------------------
312 # Check $CC warning features (if it's GCC).
313 # We want to use -pedantic, but we don't want warnings about
317 # So, we only use -pedantic if we can disable those warnings.
320 [whether ${CC} accepts -Wno-long-long],
321 [ac_cv_prog_cc_w_no_long_long],
322 [save_CFLAGS="$CFLAGS"
323 CFLAGS="-Wno-long-long"
324 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
325 [ac_cv_prog_cc_w_no_long_long=yes],
326 [ac_cv_prog_cc_w_no_long_long=no])
327 CFLAGS="$save_CFLAGS"
331 [whether ${CC} accepts -Wno-variadic-macros],
332 [ac_cv_prog_cc_w_no_variadic_macros],
333 [save_CFLAGS="$CFLAGS"
334 CFLAGS="-Wno-variadic-macros"
335 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
336 [ac_cv_prog_cc_w_no_variadic_macros=yes],
337 [ac_cv_prog_cc_w_no_variadic_macros=no])
338 CFLAGS="$save_CFLAGS"
342 [whether ${CC} accepts -Wno-overlength-strings],
343 [ac_cv_prog_cc_w_no_overlength_strings],
344 [save_CFLAGS="$CFLAGS"
345 CFLAGS="-Wno-overlength-strings"
346 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
347 [ac_cv_prog_cc_w_no_overlength_strings=yes],
348 [ac_cv_prog_cc_w_no_overlength_strings=no])
349 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_no_long_long = yes \
354 && test $ac_cv_prog_cc_w_no_variadic_macros = yes \
355 && test $ac_cv_prog_cc_w_no_overlength_strings = yes ; then
356 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings"
359 # Add -Wold-style-definition if it's accepted
361 [whether ${CC} accepts -Wold-style-definition],
362 [ac_cv_prog_cc_w_old_style_definition],
363 [save_CFLAGS="$CFLAGS"
364 CFLAGS="-Wold-style-definition"
365 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
366 [ac_cv_prog_cc_w_old_style_definition=yes],
367 [ac_cv_prog_cc_w_old_style_definition=no])
368 CFLAGS="$save_CFLAGS"
370 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
371 strict1_warn="${strict1_warn} -Wold-style-definition"
374 # Add -Wmissing-format-attribute if it's accepted
376 [whether ${CC} accepts -Wmissing-format-attribute],
377 [ac_cv_prog_cc_w_missing_format_attribute],
378 [save_CFLAGS="$CFLAGS"
379 CFLAGS="-Wmissing-format-attribute"
380 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
381 [ac_cv_prog_cc_w_missing_format_attribute=yes],
382 [ac_cv_prog_cc_w_missing_format_attribute=no])
383 CFLAGS="$save_CFLAGS"
385 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
386 strict1_warn="${strict1_warn} -Wmissing-format-attribute"
389 # Enable -Werror, period.
390 AC_ARG_ENABLE(werror_always,
391 [ --enable-werror-always enable -Werror always], [],
392 [enable_werror_always=no])
393 if test x${enable_werror_always} = xyes ; then
394 strict1_warn="${strict1_warn} -Werror"
398 AC_SUBST(strict1_warn)
400 # Get C++ compatibility warning flag, if supported.
402 [whether ${CC} accepts -Wc++-compat],
403 [ac_cv_prog_cc_w_cxx_compat],
404 [save_CFLAGS="$CFLAGS"
405 CFLAGS="-Wc++-compat"
406 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
407 [ac_cv_prog_cc_w_cxx_compat=yes],
408 [ac_cv_prog_cc_w_cxx_compat=no])
409 CFLAGS="$save_CFLAGS"
411 if test x${ac_cv_prog_cc_w_cxx_compat} = xyes; then
412 cxx_compat_warn="-Wc++-compat"
414 AC_SUBST(cxx_compat_warn)
417 # If the native compiler is GCC, we can enable warnings even in stage1.
418 # That's useful for people building cross-compilers, or just running a
421 if test "x$GCC" = "xyes"; then
422 warn_cflags='$(GCC_WARN_CFLAGS)'
424 AC_SUBST(warn_cflags)
426 # Enable -Werror in bootstrap stage2 and later.
428 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
431 AC_ARG_ENABLE(werror,
432 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
433 [if test x$is_release = x ; then
434 # Default to "yes" on development branches.
437 # Default to "no" on release branches.
440 if test x$enable_werror = xyes ; then
445 # Enable expensive internal checks
446 AC_ARG_ENABLE(checking,
447 [ --enable-checking[=LIST]
448 enable expensive run-time checks. With LIST,
449 enable only specific categories of checks.
450 Categories are: yes,no,all,none,release.
451 Flags are: assert,fold,gc,gcac,misc,
452 rtlflag,rtl,runtime,tree,valgrind.],
453 [ac_checking_flags="${enableval}"],[
454 # Determine the default checks.
455 if test x$is_release = x ; then
456 ac_checking_flags=yes
458 ac_checking_flags=release
464 ac_gc_always_collect=
467 ac_runtime_checking=1
469 ac_valgrind_checking=
470 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
471 for check in $ac_checking_flags
474 # these set all the flags to specific states
475 yes) ac_assert_checking=1 ; ac_checking=1 ;
476 ac_fold_checking= ; ac_gc_checking=1 ;
477 ac_gc_always_collect= ; ac_rtl_checking= ;
478 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
479 ac_tree_checking=1 ; ac_valgrind_checking= ;;
480 no|none) ac_assert_checking= ; ac_checking= ;
481 ac_fold_checking= ; ac_gc_checking= ;
482 ac_gc_always_collect= ; ac_rtl_checking= ;
483 ac_rtlflag_checking= ; ac_runtime_checking= ;
484 ac_tree_checking= ; ac_valgrind_checking= ;;
485 all) ac_assert_checking=1 ; ac_checking=1 ;
486 ac_fold_checking=1 ; ac_gc_checking=1 ;
487 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
488 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
489 ac_tree_checking=1 ; ac_valgrind_checking= ;;
490 release) ac_assert_checking=1 ; ac_checking= ;
491 ac_fold_checking= ; ac_gc_checking= ;
492 ac_gc_always_collect= ; ac_rtl_checking= ;
493 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
494 ac_tree_checking= ; ac_valgrind_checking= ;;
495 # these enable particular checks
496 assert) ac_assert_checking=1 ;;
497 fold) ac_fold_checking=1 ;;
498 gc) ac_gc_checking=1 ;;
499 gcac) ac_gc_always_collect=1 ;;
500 misc) ac_checking=1 ;;
501 rtl) ac_rtl_checking=1 ;;
502 rtlflag) ac_rtlflag_checking=1 ;;
503 runtime) ac_runtime_checking=1 ;;
504 tree) ac_tree_checking=1 ;;
505 valgrind) ac_valgrind_checking=1 ;;
506 *) AC_MSG_ERROR(unknown check category $check) ;;
512 if test x$ac_checking != x ; then
513 AC_DEFINE(ENABLE_CHECKING, 1,
514 [Define if you want more run-time sanity checks. This one gets a grab
515 bag of miscellaneous but relatively cheap checks.])
516 nocommon_flag=-fno-common
518 AC_SUBST(nocommon_flag)
519 if test x$ac_assert_checking != x ; then
520 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
521 [Define if you want assertions enabled. This is a cheap check.])
523 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
524 if test x$ac_runtime_checking != x ; then
525 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
526 [Define if you want runtime assertions enabled. This is a cheap check.])
528 if test x$ac_tree_checking != x ; then
529 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
530 [Define if you want all operations on trees (the basic data
531 structure of the front ends) to be checked for dynamic type safety
532 at runtime. This is moderately expensive. The tree browser debugging
533 routines will also be enabled by this option.
535 TREEBROWSER=tree-browser.o
537 AC_SUBST(TREEBROWSER)
538 if test x$ac_rtl_checking != x ; then
539 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
540 [Define if you want all operations on RTL (the basic data structure
541 of the optimizer and back end) to be checked for dynamic type safety
542 at runtime. This is quite expensive.])
544 if test x$ac_rtlflag_checking != x ; then
545 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
546 [Define if you want RTL flag accesses to be checked against the RTL
547 codes that are supported for each access macro. This is relatively
550 if test x$ac_gc_checking != x ; then
551 AC_DEFINE(ENABLE_GC_CHECKING, 1,
552 [Define if you want the garbage collector to do object poisoning and
553 other memory allocation checks. This is quite expensive.])
555 if test x$ac_gc_always_collect != x ; then
556 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
557 [Define if you want the garbage collector to operate in maximally
558 paranoid mode, validating the entire heap and collecting garbage at
559 every opportunity. This is extremely expensive.])
561 if test x$ac_fold_checking != x ; then
562 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
563 [Define if you want fold checked that it never destructs its argument.
564 This is quite expensive.])
566 valgrind_path_defines=
569 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
570 dnl # an if statement. This was the source of very frustrating bugs
571 dnl # in converting to autoconf 2.5x!
572 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
574 if test x$ac_valgrind_checking != x ; then
575 # It is certainly possible that there's valgrind but no valgrind.h.
576 # GCC relies on making annotations so we must have both.
577 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
578 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
579 [[#include <valgrind/memcheck.h>
580 #ifndef VALGRIND_DISCARD
581 #error VALGRIND_DISCARD not defined
583 [gcc_cv_header_valgrind_memcheck_h=yes],
584 [gcc_cv_header_valgrind_memcheck_h=no])
585 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
586 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
587 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
588 [[#include <memcheck.h>
589 #ifndef VALGRIND_DISCARD
590 #error VALGRIND_DISCARD not defined
592 [gcc_cv_header_memcheck_h=yes],
593 [gcc_cv_header_memcheck_h=no])
594 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
595 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
596 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
597 if test "x$valgrind_path" = "x" \
598 || (test $have_valgrind_h = no \
599 && test $gcc_cv_header_memcheck_h = no \
600 && test $gcc_cv_header_valgrind_memcheck_h = no); then
601 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
603 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
604 valgrind_command="$valgrind_path -q"
605 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
606 [Define if you want to run subprograms and generated programs
607 through valgrind (a memory checker). This is extremely expensive.])
608 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
609 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
610 [Define if valgrind's valgrind/memcheck.h header is installed.])
612 if test $gcc_cv_header_memcheck_h = yes; then
613 AC_DEFINE(HAVE_MEMCHECK_H, 1,
614 [Define if valgrind's memcheck.h header is installed.])
617 AC_SUBST(valgrind_path_defines)
618 AC_SUBST(valgrind_command)
620 AC_ARG_ENABLE(mapped-location,
621 [ --enable-mapped-location location_t is fileline integer cookie],,
622 enable_mapped_location=no)
624 if test "$enable_mapped_location" = yes ; then
625 AC_DEFINE(USE_MAPPED_LOCATION, 1,
626 [Define if location_t is fileline integer cookie.])
629 # Enable code coverage collection
630 AC_ARG_ENABLE(coverage,
631 [ --enable-coverage[=LEVEL]
632 enable compiler's code coverage collection.
633 Use to measure compiler performance and locate
634 unused parts of the compiler. With LEVEL, specify
635 optimization. Values are opt, noopt,
637 [case "${enableval}" in
639 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
642 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
645 # a.k.a. --disable-coverage
649 AC_MSG_ERROR(unknown coverage setting $enableval)
653 AC_SUBST(coverage_flags)
655 AC_ARG_ENABLE(gather-detailed-mem-stats,
656 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
657 [enable_gather_detailed_mem_stats=no])
658 if test x$enable_gather_detailed_mem_stats = xyes ; then
659 AC_DEFINE(GATHER_STATISTICS, 1,
660 [Define to enable detailed memory allocation stats gathering.])
663 # -------------------------------
664 # Miscenalleous configure options
665 # -------------------------------
669 [ --with-stabs arrange to use stabs instead of host debug format],
673 # Determine whether or not multilibs are enabled.
674 AC_ARG_ENABLE(multilib,
675 [ --enable-multilib enable library support for multiple ABIs],
676 [], [enable_multilib=yes])
677 AC_SUBST(enable_multilib)
679 # Enable __cxa_atexit for C++.
680 AC_ARG_ENABLE(__cxa_atexit,
681 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
684 # Enable C extension for decimal float if target supports it.
685 AC_ARG_ENABLE(decimal-float,
686 [ --enable-decimal-float enable decimal float extension to C],
688 if test x$enablevar = xyes ; then
690 powerpc*-*-linux* | i?86*-*-linux*)
691 enable_decimal_float=yes
694 AC_MSG_WARN(decimal float is not supported for this target, ignored)
695 enable_decimal_float=no
699 ], [enable_decimal_float=no])
701 AC_SUBST(enable_decimal_float)
703 dfp=`if test $enable_decimal_float = yes; then echo 1; else echo 0; fi`
704 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
705 [Define to 1 to enable decimal float extension to C.])
708 # Pass with no value to take the default
709 # Pass with a value to specify a thread package
710 AC_ARG_ENABLE(threads,
711 [ --enable-threads enable thread usage for target GCC
712 --enable-threads=LIB use LIB thread package for target GCC],,
716 [ --enable-tls enable or disable generation of tls code
717 overriding the assembler check for tls support],
721 *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
722 Valid choices are 'yes' and 'no'.]) ;;
726 AC_ARG_ENABLE(objc-gc,
727 [ --enable-objc-gc enable the use of Boehm's garbage collector with
728 the GNU Objective-C runtime],
729 if test x$enable_objc_gc = xno; then
737 [ --with-dwarf2 force the default debug format to be DWARF 2],
738 dwarf2="$with_dwarf2",
741 AC_ARG_ENABLE(shared,
742 [ --disable-shared don't provide a shared libgcc],
744 case $enable_shared in
748 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
749 for pkg in $enableval; do
750 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
757 ], [enable_shared=yes])
758 AC_SUBST(enable_shared)
760 AC_ARG_WITH(build-sysroot,
761 [ --with-build-sysroot=sysroot
762 use sysroot as the system root during the build])
765 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
767 case ${with_sysroot} in
768 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
769 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
772 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
773 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
775 if test "x$exec_prefix" = xNONE; then
776 if test "x$prefix" = xNONE; then
777 test_prefix=/usr/local
782 test_prefix=$exec_prefix
784 case ${TARGET_SYSTEM_ROOT} in
785 "${test_prefix}"|"${test_prefix}/"*|\
786 '${exec_prefix}'|'${exec_prefix}/'*)
787 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
788 TARGET_SYSTEM_ROOT_DEFINE="$t"
793 TARGET_SYSTEM_ROOT_DEFINE=
794 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
796 AC_SUBST(TARGET_SYSTEM_ROOT)
797 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
798 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
800 # Build with intermodule optimisations
801 AC_ARG_ENABLE(intermodule,
802 [ --enable-intermodule build the compiler in one step],
803 [case ${enable_intermodule} in
804 yes) onestep="-onestep";;
810 # Sanity check enable_languages in case someone does not run the toplevel
811 # configure # script.
812 AC_ARG_ENABLE(languages,
813 [ --enable-languages=LIST specify which front-ends to build],
814 [case ,${enable_languages}, in
816 # go safe -- we cannot be much sure without the toplevel
818 # analysis of which target libs are present and usable
822 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
827 enable_languages=c,${enable_languages}
830 [enable_languages=c])
832 # Used by documentation targets
833 AC_SUBST(datarootdir)
837 # -------------------------
838 # Checks for other programs
839 # -------------------------
843 # Find some useful tools
845 # We need awk to create options.c and options.h.
846 # Bail out if it's missing.
848 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
856 # By default, the Darwin ranlib will not treat common symbols as
857 # definitions when building the archive table of contents. Other
858 # ranlibs do that; pass an option to the Darwin ranlib that makes
859 # it behave similarly.
865 AC_SUBST(ranlib_flags)
869 # See if cmp has --ignore-initial.
870 gcc_AC_PROG_CMP_IGNORE_INITIAL
872 # See if we have the mktemp command.
873 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
875 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
877 # See if makeinfo has been installed and is modern enough
878 # that we can use it.
879 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
880 [GNU texinfo.* \([0-9][0-9.]*\)],
882 if test $gcc_cv_prog_makeinfo_modern = no; then
883 MAKEINFO="$MISSING makeinfo"
885 *** Makeinfo is missing or too old.
886 *** Info documentation will not be built.])
893 # Is pod2man recent enough to regenerate manpages?
894 AC_MSG_CHECKING([for recent Pod::Man])
895 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
897 GENERATED_MANPAGES=generated-manpages
902 AC_SUBST(GENERATED_MANPAGES)
905 dnl Don't use AC_PROG_LEX; we insist on flex.
906 dnl LEXLIB is not useful in gcc.
907 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
910 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
912 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
913 # check for build == host before using them.
916 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
917 && test -d ../binutils ; then
918 NM='$(objdir)/../binutils/nm-new'
920 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
924 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
925 && test -d ../binutils ; then
926 AR='$(objdir)/../binutils/ar'
928 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
932 # --------------------
933 # Checks for C headers
934 # --------------------
936 AC_MSG_CHECKING(for GNU C library)
937 AC_CACHE_VAL(gcc_cv_glibc,
938 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
939 [[#include <features.h>]], [[
940 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
941 #error Not a GNU C library system
945 AC_MSG_RESULT($gcc_cv_glibc)
946 if test $gcc_cv_glibc = yes; then
947 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
950 # Need to reject headers which give warnings, so that the -Werror bootstrap
951 # works later. *sigh* This needs to come before all header checks.
958 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
959 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
960 sys/resource.h sys/param.h sys/times.h sys/stat.h \
961 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
963 # Check for thread headers.
964 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
965 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
967 # These tests can't be done till we know if we have limits.h.
975 # Stage specific cflags for build.
981 stage1_cflags="-Wa,-J"
987 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
988 # sources; use -no-cpp-precomp to get to GNU cpp.
989 # Apple's GCC has bugs in designated initializer handling, so disable
991 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
994 AC_SUBST(stage1_cflags)
996 # These libraries may be used by collect2.
997 # We may need a special search path to get them linked.
998 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1000 for libs in '' -lld -lmld \
1001 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1002 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1005 AC_TRY_LINK_FUNC(ldopen,
1006 [gcc_cv_collect2_libs="$libs"; break])
1009 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1010 case $gcc_cv_collect2_libs in
1012 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1014 AC_SUBST(COLLECT2_LIBS)
1016 # When building Ada code on Alpha, we need exc_resume which is usually in
1017 # -lexc. So test for it.
1020 AC_SEARCH_LIBS(exc_resume, exc)
1023 AC_SUBST(GNAT_LIBEXC)
1025 # Some systems put ldexp and frexp in libm instead of libc; assume
1026 # they're both in the same place. jcf-dump needs them.
1029 AC_SEARCH_LIBS(ldexp, m)
1034 # Use <inttypes.h> only if it exists,
1035 # doesn't clash with <sys/types.h>, and declares intmax_t.
1036 AC_MSG_CHECKING(for inttypes.h)
1037 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1038 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1039 [[#include <sys/types.h>
1040 #include <inttypes.h>]],
1041 [[intmax_t i = -1;]])],
1042 [gcc_cv_header_inttypes_h=yes],
1043 [gcc_cv_header_inttypes_h=no])])
1044 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1045 if test $gcc_cv_header_inttypes_h = yes; then
1046 AC_DEFINE(HAVE_INTTYPES_H, 1,
1047 [Define if you have a working <inttypes.h> header file.])
1050 dnl Disabled until we have a complete test for buggy enum bitfields.
1051 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1053 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1054 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1055 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1056 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1057 putchar_unlocked putc_unlocked)
1058 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1059 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1060 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1063 if test x$ac_cv_func_mbstowcs = xyes; then
1064 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1065 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1071 [gcc_cv_func_mbstowcs_works=yes],
1072 [gcc_cv_func_mbstowcs_works=no],
1073 [gcc_cv_func_mbstowcs_works=yes])])
1074 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1075 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1076 [Define this macro if mbstowcs does not crash when its
1077 first argument is NULL.])
1081 AC_CHECK_TYPE(ssize_t, int)
1083 # Try to determine the array type of the second argument of getgroups
1084 # for the target system (int or gid_t).
1086 if test "${target}" = "${build}"; then
1087 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1090 # This condition may need some tweaking. It should include all
1091 # targets where the array type of the second argument of getgroups
1092 # is int and the type of gid_t is not equivalent to int.
1093 *-*-sunos* | *-*-ultrix*)
1094 TARGET_GETGROUPS_T=int
1097 TARGET_GETGROUPS_T=gid_t
1101 AC_SUBST(TARGET_GETGROUPS_T)
1103 gcc_AC_FUNC_MMAP_BLACKLIST
1107 # Under VMS, vfork works very differently than on Unix. The standard test
1108 # won't work, and it isn't easily adaptable. It makes more sense to
1110 ac_cv_func_vfork_works=yes
1116 # Until we have in-tree GNU iconv:
1118 AC_SUBST(LIBICONV_DEP)
1124 # We will need to find libiberty.h and ansidecl.h
1125 saved_CFLAGS="$CFLAGS"
1126 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1127 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1128 strsignal strstr strverscmp \
1129 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1130 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1131 #include "ansidecl.h"
1132 #include "system.h"])
1134 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1135 #include "ansidecl.h"
1137 #ifdef HAVE_SYS_RESOURCE_H
1138 #include <sys/resource.h>
1142 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1143 #include "ansidecl.h"
1145 #ifdef HAVE_SYS_RESOURCE_H
1146 #include <sys/resource.h>
1148 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1149 [Define to \`long' if <sys/resource.h> doesn't define.])])
1151 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1152 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1153 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1154 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1155 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1156 #include "ansidecl.h"
1165 gcc_AC_CHECK_DECLS(times, , ,[
1166 #include "ansidecl.h"
1168 #ifdef HAVE_SYS_TIMES_H
1169 #include <sys/times.h>
1173 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1174 #include "ansidecl.h"
1179 # More time-related stuff.
1180 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1182 #include "ansidecl.h"
1184 #ifdef HAVE_SYS_TIMES_H
1185 #include <sys/times.h>
1187 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1188 if test $ac_cv_struct_tms = yes; then
1189 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1190 [Define if <sys/times.h> defines struct tms.])
1193 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1194 # revisit after autoconf 2.50.
1195 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1196 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1197 #include "ansidecl.h"
1199 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1200 if test $gcc_cv_type_clock_t = yes; then
1201 AC_DEFINE(HAVE_CLOCK_T, 1,
1202 [Define if <time.h> defines clock_t.])
1205 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1206 CFLAGS="$saved_CFLAGS"
1208 gcc_AC_INITFINI_ARRAY
1210 # mkdir takes a single argument on some systems.
1211 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1219 # With Setjmp/Longjmp based exception handling.
1220 AC_ARG_ENABLE(sjlj-exceptions,
1221 [ --enable-sjlj-exceptions
1222 arrange to use setjmp/longjmp exception handling],
1223 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1224 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1225 [Define 0/1 to force the choice for exception handling model.])])
1227 # For platforms with the unwind ABI which includes an unwind library,
1228 # libunwind, we can choose to use the system libunwind.
1229 AC_ARG_WITH(system-libunwind,
1230 [ --with-system-libunwind use installed libunwind])
1232 # config.gcc also contains tests of with_system_libunwind.
1233 if test x$with_system_libunwind = xyes; then
1234 AC_DEFINE(HAVE_GETIPINFO, 1,
1235 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1238 # --------------------------------------------------------
1239 # Build, host, and target specific configuration fragments
1240 # --------------------------------------------------------
1242 # Collect build-machine-specific information.
1243 . ${srcdir}/config.build
1245 # Collect host-machine-specific information.
1246 . ${srcdir}/config.host
1250 # Collect target-machine-specific information.
1251 . ${srcdir}/config.gcc
1253 extra_objs="${host_extra_objs} ${extra_objs}"
1254 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1256 # Default the target-machine variables that were not explicitly set.
1257 if test x"$tm_file" = x
1258 then tm_file=$cpu_type/$cpu_type.h; fi
1260 if test x"$extra_headers" = x
1261 then extra_headers=; fi
1263 if test x$md_file = x
1264 then md_file=$cpu_type/$cpu_type.md; fi
1266 if test x$out_file = x
1267 then out_file=$cpu_type/$cpu_type.c; fi
1269 if test x"$tmake_file" = x
1270 then tmake_file=$cpu_type/t-$cpu_type
1273 if test x"$dwarf2" = xyes
1274 then tm_file="$tm_file tm-dwarf2.h"
1277 # Say what files are being used for the output code and MD file.
1278 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1279 echo "Using \`$srcdir/config/$md_file' as machine description file."
1281 # If any of the xm_file variables contain nonexistent files, warn
1282 # about them and drop them.
1285 for x in $build_xm_file; do
1286 if test -f $srcdir/config/$x
1288 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1294 for x in $host_xm_file; do
1295 if test -f $srcdir/config/$x
1297 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1303 for x in $xm_file; do
1304 if test -f $srcdir/config/$x
1306 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1312 for f in $tm_file; do
1315 if test $count = ax; then
1316 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1318 echo "Using the following target machine macro files:"
1319 for f in $tm_file; do
1320 echo " $srcdir/config/$f"
1324 if test x$need_64bit_hwint = xyes; then
1325 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1326 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1329 if test x$use_long_long_for_widest_fast_int = xyes; then
1330 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1331 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1332 efficiently supported by the host hardware.])
1336 for f in $host_xm_file; do
1339 if test $count = a; then
1341 elif test $count = ax; then
1342 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1344 echo "Using the following host machine macro files:"
1345 for f in $host_xm_file; do
1346 echo " $srcdir/config/$f"
1349 echo "Using ${out_host_hook_obj} for host machine hooks."
1351 if test "$host_xm_file" != "$build_xm_file"; then
1353 for f in $build_xm_file; do
1356 if test $count = a; then
1358 elif test $count = ax; then
1359 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1361 echo "Using the following build machine macro files:"
1362 for f in $build_xm_file; do
1363 echo " $srcdir/config/$f"
1370 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1371 gcc_cv_mcontext_underscores,
1373 #include <sys/signal.h>
1374 #include <ucontext.h>
1375 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1377 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1378 if test $gcc_cv_mcontext_underscores = yes; then
1379 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1380 [mcontext_t fields start with __])
1389 # Check if a valid thread package
1390 case ${enable_threads} in
1393 target_thread_file='single'
1397 target_thread_file='single'
1399 aix | dce | gnat | irix | posix | posix95 | rtems | \
1400 single | solaris | vxworks | win32 )
1401 target_thread_file=${enable_threads}
1404 echo "${enable_threads} is an unknown thread package" 1>&2
1409 if test x${thread_file} = x; then
1410 # No thread file set by target-specific clauses in config.gcc,
1411 # so use file chosen by default logic above
1412 thread_file=${target_thread_file}
1415 # Make gthr-default.h if we have a thread file.
1417 if test $thread_file != single; then
1418 rm -f gthr-default.h
1419 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1420 gthread_flags=-DHAVE_GTHR_DEFAULT
1422 AC_SUBST(gthread_flags)
1429 if test x$enable___cxa_atexit = xyes || \
1430 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1431 if test x$host = x$target; then
1432 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1433 [echo "__cxa_atexit can't be enabled on this target"])
1435 # We can't check for __cxa_atexit when building a cross, so assume
1439 if test x$use_cxa_atexit = xyes; then
1440 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1441 [Define if you want to use __cxa_atexit, rather than atexit, to
1442 register C++ destructors for local statics and global objects.
1443 This is essential for fully standards-compliant handling of
1444 destructors, but requires __cxa_atexit in libc.])
1449 if test x$with_system_libunwind = xyes; then
1450 if test x$host = x$target; then
1451 AC_SEARCH_LIBS(_Unwind_GetIPInfo, unwind,, [use_getipinfo=no])
1454 GCC_TARGET_TEMPLATE(HAVE_GETIPINFO)
1455 if test x$use_getipinfo = xyes; then
1456 AC_DEFINE(HAVE_GETIPINFO, 1,
1457 [Define to 1 if system unwind library has _Unwind_GetIPInfo.])
1459 echo "The system unwind library does not support _Unwind_GetIPInfo."
1462 # Look for a file containing extra machine modes.
1463 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1464 extra_modes_file='$(srcdir)'/config/${extra_modes}
1465 AC_SUBST(extra_modes_file)
1466 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1467 [Define to the name of a file containing a list of extra machine modes
1468 for this architecture.])
1471 # Convert extra_options into a form suitable for Makefile use.
1473 for f in $extra_options; do
1474 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1476 AC_SUBST(extra_opt_files)
1478 # auto-host.h is the file containing items generated by autoconf and is
1479 # the first file included by config.h.
1480 # If host=build, it is correct to have bconfig include auto-host.h
1481 # as well. If host!=build, we are in error and need to do more
1482 # work to find out the build config parameters.
1483 if test x$host = x$build
1485 build_auto=auto-host.h
1487 # We create a subdir, then run autoconf in the subdir.
1488 # To prevent recursion we set host and build for the new
1489 # invocation of configure to the build for this invocation
1496 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1497 *) realsrcdir=../${srcdir};;
1499 saved_CFLAGS="${CFLAGS}"
1500 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1501 ${realsrcdir}/configure \
1502 --enable-languages=${enable_languages-all} \
1503 --target=$target_alias --host=$build_alias --build=$build_alias
1504 CFLAGS="${saved_CFLAGS}"
1506 # We just finished tests for the build machine, so rename
1507 # the file auto-build.h in the gcc directory.
1508 mv auto-host.h ../auto-build.h
1511 build_auto=auto-build.h
1513 AC_SUBST(build_subdir)
1515 tm_file="${tm_file} defaults.h"
1516 tm_p_file="${tm_p_file} tm-preds.h"
1517 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1518 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1519 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1520 # put this back in temporarily.
1521 xm_file="auto-host.h ansidecl.h ${xm_file}"
1528 # Compile in configure arguments.
1529 if test -f configargs.h ; then
1530 # Being re-configured.
1531 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1532 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1534 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1537 # Double all backslashes and backslash all quotes to turn
1538 # gcc_config_arguments into a C string.
1539 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1540 $gcc_config_arguments
1542 gcc_config_arguments_str=`cat conftest.out`
1545 cat > configargs.h <<EOF
1546 /* Generated automatically. */
1547 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1548 static const char thread_model[] = "$thread_file";
1550 static const struct {
1551 const char *name, *value;
1552 } configure_default_options[] = $configure_default_options;
1556 # Internationalization
1557 ZW_GNU_GETTEXT_SISTER_DIR
1559 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1560 # -liconv on the link line twice.
1561 case "$LIBINTL" in *$LIBICONV*)
1565 AC_ARG_ENABLE(secureplt,
1566 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1569 # Windows32 Registry support for specifying GCC installation paths.
1570 AC_ARG_ENABLE(win32-registry,
1571 [ --disable-win32-registry
1572 disable lookup of installation paths in the
1573 Registry on Windows hosts
1574 --enable-win32-registry enable registry lookup (default)
1575 --enable-win32-registry=KEY
1576 use KEY instead of GCC version as the last portion
1577 of the registry key],,)
1580 win32 | pe | cygwin* | mingw32* | uwin*)
1581 if test "x$enable_win32_registry" != xno; then
1582 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1585 if test "x$enable_win32_registry" != xno; then
1586 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1587 [Define to 1 if installation paths should be looked up in the Windows
1588 Registry. Ignored on non-Windows hosts.])
1590 if test "x$enable_win32_registry" != xyes \
1591 && test "x$enable_win32_registry" != x; then
1592 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1593 [Define to be the last component of the Windows registry key under which
1594 to look for installation paths. The full key used will be
1595 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1596 The default is the GCC version number.])
1602 # Get an absolute path to the GCC top-level source directory
1603 holddir=`${PWDCMD-pwd}`
1605 topdir=`${PWDCMD-pwd}`
1608 # Conditionalize the makefile for this host machine.
1610 for f in ${host_xmake_file}
1612 if test -f ${srcdir}/config/$f
1614 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1618 # Conditionalize the makefile for this target machine.
1620 for f in ${tmake_file}
1622 if test -f ${srcdir}/config/$f
1624 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1627 tmake_file="${tmake_file_}"
1629 # If the host doesn't support symlinks, modify CC in
1630 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1631 # Otherwise, we can use "CC=$(CC)".
1635 cc_set_by_configure="\$(CC)"
1636 quoted_cc_set_by_configure="\$(CC)"
1637 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1638 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1641 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1642 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1643 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1644 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1648 # This is a terrible hack which will go away some day.
1649 host_cc_for_libada=${CC}
1650 AC_SUBST(host_cc_for_libada)
1652 out_object_file=`basename $out_file .c`.o
1654 tm_file_list="options.h"
1655 tm_include_list="options.h"
1656 for f in $tm_file; do
1659 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1660 tm_include_list="${tm_include_list} $f"
1663 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1664 tm_include_list="${tm_include_list} config/$f"
1671 for f in $tm_p_file; do
1674 tm_p_file_list="${tm_p_file_list} $f"
1675 tm_p_include_list="${tm_p_include_list} $f"
1678 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1679 tm_p_include_list="${tm_p_include_list} config/$f"
1685 for f in $xm_file; do
1688 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1689 xm_include_list="${xm_include_list} $f"
1692 xm_file_list="${xm_file_list} $f"
1693 xm_include_list="${xm_include_list} $f"
1696 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1697 xm_include_list="${xm_include_list} config/$f"
1703 host_xm_include_list=
1704 for f in $host_xm_file; do
1707 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1708 host_xm_include_list="${host_xm_include_list} $f"
1711 host_xm_file_list="${host_xm_file_list} $f"
1712 host_xm_include_list="${host_xm_include_list} $f"
1715 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1716 host_xm_include_list="${host_xm_include_list} config/$f"
1722 for f in $build_xm_file; do
1725 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1726 build_xm_include_list="${build_xm_include_list} $f"
1728 auto-build.h | auto-host.h )
1729 build_xm_file_list="${build_xm_file_list} $f"
1730 build_xm_include_list="${build_xm_include_list} $f"
1733 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1734 build_xm_include_list="${build_xm_include_list} config/$f"
1739 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1740 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1741 CROSS= AC_SUBST(CROSS)
1742 ALL=all.internal AC_SUBST(ALL)
1743 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1745 if test "x$with_build_sysroot" != x; then
1746 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1748 # This value is used, even on a native system, because
1749 # CROSS_SYSTEM_HEADER_DIR is just
1750 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1751 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1754 if test x$host != x$target
1756 CROSS="-DCROSS_COMPILE"
1758 SYSTEM_HEADER_DIR=$build_system_header_dir
1759 case "$host","$target" in
1760 # Darwin crosses can use the host system's libraries and headers,
1761 # because of the fat library support. Of course, it must be the
1762 # same version of Darwin on both sides. Allow the user to
1763 # just say --target=foo-darwin without a version number to mean
1764 # "the version on this system".
1765 *-*-darwin*,*-*-darwin*)
1766 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1767 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1768 if test $hostos = $targetos -o $targetos = darwin ; then
1770 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1775 i?86-*-*,x86_64-*-* \
1776 | powerpc*-*-*,powerpc64*-*-*)
1777 CROSS="$CROSS -DNATIVE_CROSS" ;;
1779 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1780 SYSTEM_HEADER_DIR=$build_system_header_dir
1783 # If this is a cross-compiler that does not
1784 # have its own set of headers then define
1787 # If this is using newlib, without having the headers available now,
1788 # then define inhibit_libc in LIBGCC2_CFLAGS.
1789 # This prevents libgcc2 from containing any code which requires libc
1792 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1793 test x$with_newlib = xyes ; } &&
1794 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1797 AC_SUBST(inhibit_libc)
1799 # When building gcc with a cross-compiler, we need to adjust things so
1800 # that the generator programs are still built with the native compiler.
1801 # Also, we cannot run fixincludes or fix-header.
1803 # These are the normal (build=host) settings:
1804 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1805 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1806 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1808 # Possibly disable fixproto, on a per-target basis.
1809 case ${use_fixproto} in
1814 STMP_FIXPROTO=stmp-fixproto
1817 AC_SUBST(STMP_FIXPROTO)
1819 # And these apply if build != host, or we are generating coverage data
1820 if test x$build != x$host || test "x$coverage_flags" != x
1822 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1824 if test "x$TARGET_SYSTEM_ROOT" = x; then
1825 if test "x$STMP_FIXPROTO" != x; then
1826 STMP_FIXPROTO=stmp-install-fixproto
1831 # Expand extra_headers to include complete path.
1832 # This substitutes for lots of t-* files.
1834 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1835 for file in ${extra_headers} ; do
1836 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1839 # Define collect2 in Makefile.
1840 case $host_can_use_collect2 in
1842 *) collect2='collect2$(exeext)' ;;
1844 AC_SUBST([collect2])
1846 # Add a definition of USE_COLLECT2 if system wants one.
1847 case $use_collect2 in
1848 no) use_collect2= ;;
1851 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1852 xm_defines="${xm_defines} USE_COLLECT2"
1853 case $host_can_use_collect2 in
1855 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1861 # ---------------------------
1862 # Assembler & linker features
1863 # ---------------------------
1865 # Identify the assembler which will work hand-in-glove with the newly
1866 # built GCC, so that we can examine its features. This is the assembler
1867 # which will be driven by the driver program.
1869 # If build != host, and we aren't building gas in-tree, we identify a
1870 # build->target assembler and hope that it will have the same features
1871 # as the host->target assembler we'll be using.
1872 gcc_cv_gas_major_version=
1873 gcc_cv_gas_minor_version=
1874 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1876 m4_pattern_allow([AS_FOR_TARGET])dnl
1877 AS_VAR_SET_IF(gcc_cv_as,, [
1878 if test -x "$DEFAULT_ASSEMBLER"; then
1879 gcc_cv_as="$DEFAULT_ASSEMBLER"
1880 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1881 && test -f ../gas/Makefile \
1882 && test x$build = x$host; then
1883 gcc_cv_as=../gas/as-new$build_exeext
1884 elif test -x as$build_exeext; then
1885 # Build using assembler in the current directory.
1886 gcc_cv_as=./as$build_exeext
1887 elif test -x $AS_FOR_TARGET; then
1888 gcc_cv_as="$AS_FOR_TARGET"
1890 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1893 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1894 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1896 AC_MSG_CHECKING(what assembler to use)
1897 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1898 # Single tree build which includes gas. We want to prefer it
1899 # over whatever linker top-level may have detected, since
1900 # we'll use what we're building after installation anyway.
1901 AC_MSG_RESULT(newly built gas)
1903 _gcc_COMPUTE_GAS_VERSION
1904 in_tree_gas_is_elf=no
1905 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1906 || (grep 'obj_format = multi' ../gas/Makefile \
1907 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1909 in_tree_gas_is_elf=yes
1912 AC_MSG_RESULT($gcc_cv_as)
1916 # Identify the linker which will work hand-in-glove with the newly
1917 # built GCC, so that we can examine its features. This is the linker
1918 # which will be driven by the driver program.
1920 # If build != host, and we aren't building gas in-tree, we identify a
1921 # build->target linker and hope that it will have the same features
1922 # as the host->target linker we'll be using.
1923 gcc_cv_gld_major_version=
1924 gcc_cv_gld_minor_version=
1925 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1926 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1928 AS_VAR_SET_IF(gcc_cv_ld,, [
1929 if test -x "$DEFAULT_LINKER"; then
1930 gcc_cv_ld="$DEFAULT_LINKER"
1931 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1932 && test -f ../ld/Makefile \
1933 && test x$build = x$host; then
1934 gcc_cv_ld=../ld/ld-new$build_exeext
1935 elif test -x collect-ld$build_exeext; then
1936 # Build using linker in the current directory.
1937 gcc_cv_ld=./collect-ld$build_exeext
1938 elif test -x $LD_FOR_TARGET; then
1939 gcc_cv_ld="$LD_FOR_TARGET"
1941 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1944 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1945 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1947 AC_MSG_CHECKING(what linker to use)
1948 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1949 # Single tree build which includes ld. We want to prefer it
1950 # over whatever linker top-level may have detected, since
1951 # we'll use what we're building after installation anyway.
1952 AC_MSG_RESULT(newly built ld)
1954 in_tree_ld_is_elf=no
1955 if (grep 'EMUL = .*elf' ../ld/Makefile \
1956 || grep 'EMUL = .*linux' ../ld/Makefile \
1957 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1958 in_tree_ld_is_elf=yes
1960 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
1963 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1964 if test x$gcc_cv_gld_version != x; then
1968 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1969 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1972 AC_MSG_RESULT($gcc_cv_ld)
1976 # Figure out what nm we will be using.
1977 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1978 AS_VAR_SET_IF(gcc_cv_nm,, [
1979 if test -f $gcc_cv_binutils_srcdir/configure.in \
1980 && test -f ../binutils/Makefile \
1981 && test x$build = x$host; then
1982 gcc_cv_nm=../binutils/nm-new$build_exeext
1983 elif test -x nm$build_exeext; then
1984 gcc_cv_nm=./nm$build_exeext
1985 elif test -x $NM_FOR_TARGET; then
1986 gcc_cv_nm="$NM_FOR_TARGET"
1988 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1991 AC_MSG_CHECKING(what nm to use)
1992 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1993 # Single tree build which includes binutils.
1994 AC_MSG_RESULT(newly built nm)
1997 AC_MSG_RESULT($gcc_cv_nm)
2001 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2002 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2004 # Figure out what objdump we will be using.
2005 AS_VAR_SET_IF(gcc_cv_objdump,, [
2006 if test -f $gcc_cv_binutils_srcdir/configure.in \
2007 && test -f ../binutils/Makefile \
2008 && test x$build = x$host; then
2009 # Single tree build which includes binutils.
2010 gcc_cv_objdump=../binutils/objdump$build_exeext
2011 elif test -x objdump$build_exeext; then
2012 gcc_cv_objdump=./objdump$build_exeext
2013 elif test -x $OBJDUMP_FOR_TARGET; then
2014 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2016 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2019 AC_MSG_CHECKING(what objdump to use)
2020 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2021 # Single tree build which includes binutils.
2022 AC_MSG_RESULT(newly built objdump)
2023 elif test x$gcc_cv_objdump = x; then
2024 AC_MSG_RESULT(not found)
2026 AC_MSG_RESULT($gcc_cv_objdump)
2029 # Figure out what assembler alignment features are present.
2030 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2034 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2035 [Define if your assembler supports .balign and .p2align.])])
2037 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2040 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2041 [Define if your assembler supports specifying the maximum number
2042 of bytes to skip when using the GAS .p2align command.])])
2044 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2046 [conftest_label1: .word 0
2048 conftest_label2: .word 0
2050 [if test x$gcc_cv_nm != x; then
2051 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2052 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2053 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2055 else gcc_cv_as_subsection_m1=yes
2057 rm -f conftest.nm1 conftest.nm2
2059 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2060 [Define if your assembler supports .subsection and .subsection -1 starts
2061 emitting at the beginning of your section.])])
2063 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2066 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2068 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2070 [ .weakref foobar, barfnot],,
2071 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2073 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2076 .NSUBSPA $CODE$,COMDAT],,
2077 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2079 # .hidden needs to be supported in both the assembler and the linker,
2080 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2081 # This is irritatingly difficult to feature test for; we have to check the
2082 # date string after the version number. If we've got an in-tree
2083 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2085 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2086 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2091 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2092 [if test $in_tree_ld = yes ; then
2094 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2095 && test $in_tree_ld_is_elf = yes; then
2096 gcc_cv_ld_hidden=yes
2099 gcc_cv_ld_hidden=yes
2100 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2101 if echo "$ld_ver" | grep GNU > /dev/null; then
2103 ld_vers=`echo $ld_ver | sed -n \
2104 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2105 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2106 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2107 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2108 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2109 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2110 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2111 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2112 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2113 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2114 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2115 if test 0"$ld_date" -lt 20020404; then
2116 if test -n "$ld_date"; then
2117 # If there was date string, but was earlier than 2002-04-04, fail
2119 elif test -z "$ld_vers"; then
2120 # If there was no date string nor ld version number, something is wrong
2123 test -z "$ld_vers_patch" && ld_vers_patch=0
2124 if test "$ld_vers_major" -lt 2; then
2126 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2127 gcc_cv_ld_hidden="no"
2128 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2136 hppa64*-*-hpux* | ia64*-*-hpux*)
2137 gcc_cv_ld_hidden=yes
2145 libgcc_visibility=no
2146 AC_SUBST(libgcc_visibility)
2147 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2148 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2149 libgcc_visibility=yes
2150 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2151 [Define if your assembler and linker support .hidden.])
2154 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2155 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2163 [# GAS versions before 2.11 do not support uleb128,
2164 # despite appearing to.
2165 # ??? There exists an elf-specific test that will crash
2166 # the assembler. Perhaps it's better to figure out whether
2167 # arbitrary sections are supported and try the test.
2168 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2169 if echo "$as_ver" | grep GNU > /dev/null; then
2171 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2172 as_major=`echo $as_ver | sed 's/\..*//'`
2173 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2175 if test $as_major -eq 2 && test $as_minor -lt 11
2177 else gcc_cv_as_leb128=yes
2180 [AC_DEFINE(HAVE_AS_LEB128, 1,
2181 [Define if your assembler supports .sleb128 and .uleb128.])])
2183 # GAS versions up to and including 2.11.0 may mis-optimize
2185 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2193 .section .eh_frame,"aw",@progbits
2195 .4byte .LECIE1-.LSCIE1
2209 .4byte .LEFDE1-.LASFDE1
2211 .4byte .LASFDE1-__FRAME_BEGIN__
2219 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2220 cat > conftest.lit <<EOF
2221 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2222 0010 01000000 12000000 18000000 00000000 ................
2223 0020 08000000 04080000 0044 .........D @&t@
2225 cat > conftest.big <<EOF
2226 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2227 0010 00000001 00000012 00000018 00000000 ................
2228 0020 00000008 04000000 0844 .........D @&t@
2230 # If the assembler didn't choke, and we can objdump,
2231 # and we got the correct data, then succeed.
2232 # The text in the here-document typically retains its unix-style line
2233 # endings, while the output of objdump will use host line endings.
2234 # Therefore, use diff -b for the comparisons.
2235 if test x$gcc_cv_objdump != x \
2236 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2237 | tail -3 > conftest.got \
2238 && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2239 || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2241 gcc_cv_as_eh_frame=yes
2242 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2243 gcc_cv_as_eh_frame=buggy
2245 # Uh oh, what do we do now?
2246 gcc_cv_as_eh_frame=no
2249 if test $gcc_cv_as_eh_frame = buggy; then
2250 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2251 [Define if your assembler mis-optimizes .eh_frame data.])
2254 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2255 [elf,2,12,0], [--fatal-warnings],
2256 [.section .rodata.str, "aMS", @progbits, 1])
2257 if test $gcc_cv_as_shf_merge = no; then
2258 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2259 [elf,2,12,0], [--fatal-warnings],
2260 [.section .rodata.str, "aMS", %progbits, 1])
2262 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2263 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2264 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2266 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2267 [elf,2,16,0], [--fatal-warnings],
2268 [.section .text,"axG",@progbits,.foo,comdat])
2269 if test $gcc_cv_as_comdat_group = yes; then
2270 gcc_cv_as_comdat_group_percent=no
2272 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2273 [elf,2,16,0], [--fatal-warnings],
2274 [.section .text,"axG",%progbits,.foo,comdat])
2276 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2278 if test 0"$ld_date" -lt 20050308; then
2279 if test -n "$ld_date"; then
2280 # If there was date string, but was earlier than 2005-03-08, fail
2282 elif test "$ld_vers_major" -lt 2; then
2284 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2289 # assume linkers other than GNU ld don't support COMDAT group
2292 if test $comdat_group = no; then
2293 gcc_cv_as_comdat_group=no
2294 gcc_cv_as_comdat_group_percent=no
2296 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2297 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2298 [Define 0/1 if your assembler and linker support COMDAT groups.])
2300 # Thread-local storage - the check is heavily parametrized.
2309 .section ".tdata","awT",@progbits
2312 ldq $27,__tls_get_addr($29) !literal!1
2313 lda $16,foo($29) !tlsgd!1
2314 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2315 ldq $27,__tls_get_addr($29) !literal!2
2316 lda $16,foo($29) !tlsldm!2
2317 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2318 ldq $1,foo($29) !gotdtprel
2319 ldah $2,foo($29) !dtprelhi
2320 lda $3,foo($2) !dtprello
2321 lda $4,foo($29) !dtprel
2322 ldq $1,foo($29) !gottprel
2323 ldah $2,foo($29) !tprelhi
2324 lda $3,foo($2) !tprello
2325 lda $4,foo($29) !tprel'
2328 tls_as_opt=--fatal-warnings
2332 .section ".tdata","awT",@progbits
2344 .section ".tdata","awT",@progbits
2348 addil LT%foo-$tls_gdidx$,gp
2349 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2352 addil LT%foo-$tls_ldidx$,gp
2354 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2355 addil LR%foo-$tls_dtpoff$,%ret0
2356 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2358 addil LT%foo-$tls_ieoff$,gp
2359 ldw RT%foo-$tls_ieoff$(%r1),%t2
2362 addil LR%foo-$tls_leoff$,%t1
2363 ldo RR%foo-$tls_leoff$(%r1),%t2'
2366 tls_as_opt=--fatal-warnings
2370 .section ".tdata","awT",%progbits
2383 .section ".tdata","awT",@progbits
2387 leal foo@TLSGD(,%ebx,1), %eax
2388 leal foo@TLSLDM(%ebx), %eax
2389 leal foo@DTPOFF(%eax), %edx
2390 movl foo@GOTTPOFF(%ebx), %eax
2391 subl foo@GOTTPOFF(%ebx), %eax
2392 addl foo@GOTNTPOFF(%ebx), %eax
2393 movl foo@INDNTPOFF, %eax
2394 movl $foo@TPOFF, %eax
2395 subl $foo@TPOFF, %eax
2396 leal foo@NTPOFF(%ecx), %eax'
2399 tls_as_opt=--fatal-warnings
2403 .section ".tdata","awT",@progbits
2407 leaq foo@TLSGD(%rip), %rdi
2408 leaq foo@TLSLD(%rip), %rdi
2409 leaq foo@DTPOFF(%rax), %rdx
2410 movq foo@GOTTPOFF(%rip), %rax
2411 movq $foo@TPOFF, %rax'
2414 tls_as_opt=--fatal-warnings
2418 .section ".tdata","awT",@progbits
2421 addl r16 = @ltoff(@dtpmod(foo#)), gp
2422 addl r17 = @ltoff(@dtprel(foo#)), gp
2423 addl r18 = @ltoff(@tprel(foo#)), gp
2424 addl r19 = @dtprel(foo#), gp
2425 adds r21 = @dtprel(foo#), r13
2426 movl r23 = @dtprel(foo#)
2427 addl r20 = @tprel(foo#), gp
2428 adds r22 = @tprel(foo#), r13
2429 movl r24 = @tprel(foo#)'
2432 tls_as_opt=--fatal-warnings
2436 .section .tdata,"awT",@progbits
2440 addiu $4, $28, %tlsgd(x)
2441 addiu $4, $28, %tlsldm(x)
2442 lui $4, %dtprel_hi(x)
2443 addiu $4, $4, %dtprel_lo(x)
2444 lw $4, %gottprel(x)($28)
2445 lui $4, %tprel_hi(x)
2446 addiu $4, $4, %tprel_lo(x)'
2449 tls_as_opt='-32 --fatal-warnings'
2453 .section ".tdata","awT",@progbits
2461 addi 3,31,ld0@got@tlsgd
2463 addi 3,31,x1@got@tlsld
2466 addis 9,3,x2@dtprel@ha
2467 addi 9,9,x2@dtprel@l
2468 lwz 9,x3@got@tprel(31)
2471 addis 9,2,x2@tprel@ha
2472 addi 9,9,x2@tprel@l'
2475 tls_as_opt="-a32 --fatal-warnings"
2479 .section ".tdata","awT",@progbits
2487 addi 3,2,ld0@got@tlsgd
2493 addi 3,2,x1@got@tlsld
2499 addis 9,3,x2@dtprel@ha
2500 addi 9,9,x2@dtprel@l
2503 ld 9,x3@got@dtprel(2)
2509 tls_as_opt="-a64 --fatal-warnings"
2513 .section ".tdata","awT",@progbits
2522 l %r1,foo@GOTNTPOFF(%r12)
2523 l %r1,0(%r1):tls_load:foo
2524 bas %r14,0(%r1,%r13):tls_gdcall:foo
2525 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2528 tls_as_opt="-m31 --fatal-warnings"
2532 .section ".tdata","awT",@progbits
2540 lg %r1,foo@GOTNTPOFF(%r12)
2541 larl %r1,foo@INDNTPOFF
2542 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2543 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2546 tls_as_opt="-m64 -Aesame --fatal-warnings"
2548 sh-*-* | sh[34]-*-*)
2550 .section ".tdata","awT",@progbits
2560 tls_as_opt=--fatal-warnings
2564 sparc*-sun-solaris2.[56789]*)
2565 # TLS was introduced in the Solaris 9 4/04 release but
2566 # we do not enable it by default on Solaris 9 either.
2567 if test "x$enable_tls" = xyes ; then
2573 sparc*-sun-solaris2.*)
2580 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2582 .section ".tdata",#alloc,#write,#tls
2585 sethi %tgd_hi22(foo), %o0
2586 add %o0, %tgd_lo10(foo), %o1
2587 add %l7, %o1, %o0, %tgd_add(foo)
2588 call __tls_get_addr, %tgd_call(foo)
2589 sethi %tldm_hi22(foo), %l1
2590 add %l1, %tldm_lo10(foo), %l2
2591 add %l7, %l2, %o0, %tldm_add(foo)
2592 call __tls_get_addr, %tldm_call(foo)
2593 sethi %tldo_hix22(foo), %l3
2594 xor %l3, %tldo_lox10(foo), %l4
2595 add %o0, %l4, %l5, %tldo_add(foo)
2596 sethi %tie_hi22(foo), %o3
2597 add %o3, %tie_lo10(foo), %o3
2598 ld [%l7 + %o3], %o2, %tie_ld(foo)
2599 add %g7, %o2, %o4, %tie_add(foo)
2600 sethi %tle_hix22(foo), %l1
2601 xor %l1, %tle_lox10(foo), %o5
2602 ld [%g7 + %o5], %o1'
2607 .section ".tdata","awT",@progbits
2610 sethi %tgd_hi22(foo), %o0
2611 add %o0, %tgd_lo10(foo), %o1
2612 add %l7, %o1, %o0, %tgd_add(foo)
2613 call __tls_get_addr, %tgd_call(foo)
2614 sethi %tldm_hi22(foo), %l1
2615 add %l1, %tldm_lo10(foo), %l2
2616 add %l7, %l2, %o0, %tldm_add(foo)
2617 call __tls_get_addr, %tldm_call(foo)
2618 sethi %tldo_hix22(foo), %l3
2619 xor %l3, %tldo_lox10(foo), %l4
2620 add %o0, %l4, %l5, %tldo_add(foo)
2621 sethi %tie_hi22(foo), %o3
2622 add %o3, %tie_lo10(foo), %o3
2623 ld [%l7 + %o3], %o2, %tie_ld(foo)
2624 add %g7, %o2, %o4, %tie_add(foo)
2625 sethi %tle_hix22(foo), %l1
2626 xor %l1, %tle_lox10(foo), %o5
2627 ld [%g7 + %o5], %o1'
2630 tls_as_opt="-32 --fatal-warnings"
2636 if test "x$enable_tls" = xno ; then
2637 : # TLS explicitly disabled.
2638 elif test "x$enable_tls" = xyes ; then
2639 set_have_as_tls=yes # TLS explicitly enabled.
2640 elif test -z "$tls_first_major"; then
2641 : # If we don't have a check, assume no support.
2643 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2644 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2645 [set_have_as_tls=yes])
2647 if test $set_have_as_tls = yes ; then
2648 AC_DEFINE(HAVE_AS_TLS, 1,
2649 [Define if your assembler supports thread-local storage.])
2652 # Target-specific assembler checks.
2654 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2655 gcc_cv_ld_static_dynamic=no
2656 if test $in_tree_ld = yes ; then
2657 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2658 gcc_cv_ld_static_dynamic=yes
2660 elif test x$gcc_cv_ld != x; then
2661 # Check if linker supports -Bstatic/-Bdynamic option
2662 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2663 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2664 gcc_cv_ld_static_dynamic=yes
2667 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2668 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2669 [Define if your linker supports -Bstatic/-Bdynamic option.])
2671 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2673 if test x"$demangler_in_ld" = xyes; then
2674 AC_MSG_CHECKING(linker --demangle support)
2675 gcc_cv_ld_demangle=no
2676 if test $in_tree_ld = yes; then
2677 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2678 gcc_cv_ld_demangle=yes
2680 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2681 # Check if the GNU linker supports --demangle option
2682 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2683 gcc_cv_ld_demangle=yes
2686 if test x"$gcc_cv_ld_demangle" = xyes; then
2687 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2688 [Define if your linker supports --demangle option.])
2690 AC_MSG_RESULT($gcc_cv_ld_demangle)
2694 # All TARGET_ABI_OSF targets.
2695 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2696 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2697 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2700 extbl $3, $2, $3 !lituse_bytoff!1
2701 ldq $2, a($29) !literal!1
2702 ldq $4, b($29) !literal!2
2703 ldq_u $3, 0($2) !lituse_base!1
2704 ldq $27, f($29) !literal!5
2705 jsr $26, ($27), f !lituse_jsr!5
2706 ldah $29, 0($26) !gpdisp!3
2707 lda $0, c($29) !gprel
2708 ldah $1, d($29) !gprelhigh
2709 lda $1, d($1) !gprellow
2710 lda $29, 0($29) !gpdisp!3],,
2711 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2712 [Define if your assembler supports explicit relocations.])])
2713 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2714 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2717 ldq $27, a($29) !literal!1
2718 jsr $26, ($27), a !lituse_jsrdirect!1],,
2719 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2720 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2724 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2725 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2726 [-no-mul-bug-abort], [.text],,
2727 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2728 [Define if your assembler supports the -no-mul-bug-abort option.])])
2732 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2733 [.register %g2, #scratch],,
2734 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2735 [Define if your assembler supports .register.])])
2737 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2739 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2740 [Define if your assembler supports -relax option.])])
2742 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2743 gcc_cv_as_sparc_ua_pcrel,,
2751 .uaword %r_disp32(foo)],
2752 [if test x$gcc_cv_ld != x \
2753 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2754 gcc_cv_as_sparc_ua_pcrel=yes
2757 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2758 [Define if your assembler and linker support unaligned PC relative relocs.])
2760 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2761 gcc_cv_as_sparc_ua_pcrel_hidden,,
2766 .uaword %r_disp32(foo)
2767 .byte 0x32, 0x33, 0x34
2772 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2773 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2774 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2775 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2776 if $gcc_cv_objdump -R conftest 2> /dev/null \
2777 | grep 'DISP32' > /dev/null 2>&1; then
2780 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2784 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2785 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2786 ]) # unaligned pcrel relocs
2788 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2789 gcc_cv_as_sparc_offsetable_lo10,,
2792 or %g1, %lo(ab) + 12, %g1
2793 or %g1, %lo(ab + 12), %g1],
2794 [if test x$gcc_cv_objdump != x \
2795 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2796 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2797 gcc_cv_as_sparc_offsetable_lo10=yes
2799 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2800 [Define if your assembler supports offsetable %lo().])])
2804 i[34567]86-*-* | x86_64-*-*)
2807 cygwin* | pe | mingw32*)
2808 # Used for DWARF 2 in PE
2809 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2810 gcc_cv_as_ix86_pe_secrel32,
2816 [if test x$gcc_cv_ld != x \
2817 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2818 gcc_cv_as_ix86_pe_secrel32=yes
2821 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2822 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2826 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2827 gcc_cv_as_ix86_filds_fists,
2828 [2,9,0],, [filds mem; fists mem],,
2829 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2830 [Define if your assembler uses the new HImode fild and fist notation.])])
2832 gcc_GAS_CHECK_FEATURE([cmov syntax],
2833 gcc_cv_as_ix86_cmov_sun_syntax,,,
2834 [cmovl.l %edx, %eax],,
2835 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2836 [Define if your assembler supports the Sun syntax for cmov.])])
2838 gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2839 gcc_cv_as_ix86_ffreep,,,
2841 [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2842 [Define if your assembler supports the ffreep mnemonic.])])
2844 # This one is used unconditionally by i386.[ch]; it is to be defined
2845 # to 1 if the feature is present, 0 otherwise.
2846 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2847 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2853 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2854 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2855 [Define true if the assembler supports '.long foo@GOTOFF'.])
2859 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2860 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2862 addl r15 = @ltoffx(x#), gp
2864 ld8.mov r16 = [[r15]], x#],,
2865 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2866 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2872 *-*-aix*) conftest_s=' .machine "pwr5"
2876 gcc_GAS_CHECK_FEATURE([.machine directive support],
2877 gcc_cv_as_machine_directive,,,
2878 [ .machine ppc7400])
2879 if test x$gcc_cv_as_machine_directive != xyes; then
2880 echo "*** This target requires an assembler supporting \".machine\"" >&2
2881 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2882 test x$build = x$target && exit 1
2886 *) conftest_s=' .machine power4
2891 gcc_GAS_CHECK_FEATURE([mfcr field support],
2892 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2894 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2895 [Define if your assembler supports mfcr field.])])
2898 *-*-aix*) conftest_s=' .machine "pwr5"
2901 *) conftest_s=' .machine power5
2906 gcc_GAS_CHECK_FEATURE([popcntb support],
2907 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2909 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2910 [Define if your assembler supports popcntb field.])])
2913 *-*-aix*) conftest_s=' .machine "pwr5x"
2916 *) conftest_s=' .machine power5
2921 gcc_GAS_CHECK_FEATURE([fp round support],
2922 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2924 [AC_DEFINE(HAVE_AS_FPRND, 1,
2925 [Define if your assembler supports fprnd.])])
2928 *-*-aix*) conftest_s=' .csect .text[[PR]]
2930 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2934 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2935 *) conftest_s=' .text
2937 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2940 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2941 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2943 [AC_DEFINE(HAVE_AS_REL16, 1,
2944 [Define if your assembler supports R_PPC_REL16 relocs.])])
2948 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2949 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2950 [ lw $4,%gp_rel(foo)($4)],,
2951 [if test x$target_cpu_default = x
2952 then target_cpu_default=MASK_EXPLICIT_RELOCS
2953 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2958 # Mips and HP-UX need the GNU assembler.
2959 # Linux on IA64 might be able to use the Intel assembler.
2962 mips*-*-* | *-*-hpux* )
2963 if test x$gas_flag = xyes \
2964 || test x"$host" != x"$build" \
2965 || test ! -x "$gcc_cv_as" \
2966 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2969 echo "*** This configuration requires the GNU assembler" >&2
2975 # ??? Not all targets support dwarf2 debug_line, even within a version
2976 # of gas. Moreover, we need to emit a valid instruction to trigger any
2977 # info to the output file. So, as supported targets are added to gas 2.11,
2978 # add some instruction here to (also) show we expect this might work.
2979 # ??? Once 2.11 is released, probably need to add first known working
2980 # version to the per-target configury.
2982 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2983 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2984 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-*)
2987 ia64*-*-* | s390*-*-*)
2994 if test x"$insn" != x; then
2996 .file 1 \"conftest.s\"
2999 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3000 gcc_cv_as_dwarf2_debug_line,
3001 [elf,2,11,0],, [$conftest_s],
3002 [if test x$gcc_cv_objdump != x \
3003 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3004 | grep debug_line > /dev/null 2>&1; then
3005 gcc_cv_as_dwarf2_debug_line=yes
3008 # The .debug_line file table must be in the exact order that
3009 # we specified the files, since these indices are also used
3010 # by DW_AT_decl_file. Approximate this test by testing if
3011 # the assembler bitches if the same index is assigned twice.
3012 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3013 gcc_cv_as_dwarf2_file_buggy,,,
3017 if test $gcc_cv_as_dwarf2_debug_line = yes \
3018 && test $gcc_cv_as_dwarf2_file_buggy = no; then
3019 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3020 [Define if your assembler supports dwarf2 .file/.loc directives,
3021 and preserves file table indices exactly as given.])
3024 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3025 gcc_cv_as_gdwarf2_flag,
3026 [elf,2,11,0], [--gdwarf2], [$insn],,
3027 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3028 [Define if your assembler supports the --gdwarf2 option.])])
3030 gcc_GAS_CHECK_FEATURE([--gstabs option],
3031 gcc_cv_as_gstabs_flag,
3032 [elf,2,11,0], [--gstabs], [$insn],
3033 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3034 # and warns about it, but still exits successfully. So check for
3036 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3038 else gcc_cv_as_gstabs_flag=yes
3040 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3041 [Define if your assembler supports the --gstabs option.])])
3044 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3045 gcc_cv_ld_ro_rw_mix=unknown
3046 if test $in_tree_ld = yes ; then
3047 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3048 && test $in_tree_ld_is_elf = yes; then
3049 gcc_cv_ld_ro_rw_mix=read-write
3051 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3052 echo '.section myfoosect, "a"' > conftest1.s
3053 echo '.section myfoosect, "aw"' > conftest2.s
3054 echo '.byte 1' >> conftest2.s
3055 echo '.section myfoosect, "a"' > conftest3.s
3056 echo '.byte 0' >> conftest3.s
3057 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3058 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3059 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3060 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3061 conftest2.o conftest3.o > /dev/null 2>&1; then
3062 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3063 | sed -e '/myfoosect/!d' -e N`
3064 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3065 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3066 gcc_cv_ld_ro_rw_mix=read-only
3068 gcc_cv_ld_ro_rw_mix=read-write
3073 rm -f conftest.* conftest[123].*
3076 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3077 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3078 [Define if your linker links a mix of read-only
3079 and read-write sections into a read-write section.])
3081 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3083 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3084 gcc_cv_ld_eh_frame_hdr=no
3085 if test $in_tree_ld = yes ; then
3086 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3087 && test $in_tree_ld_is_elf = yes; then
3088 gcc_cv_ld_eh_frame_hdr=yes
3090 elif test x$gcc_cv_ld != x; then
3091 # Check if linker supports --eh-frame-hdr option
3092 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3093 gcc_cv_ld_eh_frame_hdr=yes
3096 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3097 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3098 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3099 [Define if your linker supports --eh-frame-hdr option.])
3101 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3103 AC_MSG_CHECKING(linker position independent executable support)
3105 if test $in_tree_ld = yes ; then
3106 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3107 && test $in_tree_ld_is_elf = yes; then
3110 elif test x$gcc_cv_ld != x; then
3111 # Check if linker supports -pie option
3112 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3116 if test x"$gcc_cv_ld_pie" = xyes; then
3117 AC_DEFINE(HAVE_LD_PIE, 1,
3118 [Define if your linker supports -pie option.])
3120 AC_MSG_RESULT($gcc_cv_ld_pie)
3126 AC_CACHE_CHECK(linker --as-needed support,
3127 gcc_cv_ld_as_needed,
3128 [gcc_cv_ld_as_needed=no
3129 if test $in_tree_ld = yes ; then
3130 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3131 && test $in_tree_ld_is_elf = yes; then
3132 gcc_cv_ld_as_needed=yes
3134 elif test x$gcc_cv_ld != x; then
3135 # Check if linker supports --as-needed and --no-as-needed options
3136 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3137 gcc_cv_ld_as_needed=yes
3141 if test x"$gcc_cv_ld_as_needed" = xyes; then
3142 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3143 [Define if your linker supports --as-needed and --no-as-needed options.])
3146 case "$target:$tm_file" in
3147 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3148 AC_CACHE_CHECK(linker support for omitting dot symbols,
3149 gcc_cv_ld_no_dot_syms,
3150 [gcc_cv_ld_no_dot_syms=no
3151 if test $in_tree_ld = yes ; then
3152 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3153 gcc_cv_ld_no_dot_syms=yes
3155 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3156 cat > conftest1.s <<EOF
3160 cat > conftest2.s <<EOF
3161 .section ".opd","aw"
3166 .quad .LEfoo,.TOC.@tocbase,0
3172 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3173 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3174 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3175 gcc_cv_ld_no_dot_syms=yes
3177 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3180 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3181 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3182 [Define if your PowerPC64 linker only needs function descriptor syms.])
3187 AC_CACHE_CHECK(linker --sysroot support,
3189 [gcc_cv_ld_sysroot=no
3190 if test $in_tree_ld = yes ; then
3191 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3192 gcc_cv_ld_sysroot=yes
3194 elif test x$gcc_cv_ld != x; then
3195 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3196 gcc_cv_ld_sysroot=yes
3199 if test x"$gcc_cv_ld_sysroot" = xyes; then
3200 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3201 [Define if your linker supports --sysroot.])
3204 if test x$with_sysroot = x && test x$host = x$target \
3205 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
3206 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3207 [Define to PREFIX/include if cpp should also search that directory.])
3210 # Test for stack protector support in target C library.
3213 AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3214 gcc_cv_libc_provides_ssp,
3215 [gcc_cv_libc_provides_ssp=no
3216 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3217 if test "x$with_sysroot" = x; then
3218 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3219 elif test "x$with_sysroot" = xyes; then
3220 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3222 glibc_header_dir="${with_sysroot}/usr/include"
3225 glibc_header_dir=/usr/include
3227 # glibc 2.4 and later provides __stack_chk_fail and
3228 # either __stack_chk_guard, or TLS access to stack guard canary.
3229 if test -f $glibc_header_dir/features.h \
3230 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3231 $glibc_header_dir/features.h > /dev/null; then
3232 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3233 $glibc_header_dir/features.h > /dev/null; then
3234 gcc_cv_libc_provides_ssp=yes
3235 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3236 $glibc_header_dir/features.h > /dev/null \
3237 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3238 $glibc_header_dir/features.h > /dev/null; then
3239 gcc_cv_libc_provides_ssp=yes
3242 *) gcc_cv_libc_provides_ssp=no ;;
3244 if test x$gcc_cv_libc_provides_ssp = xyes; then
3245 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3246 [Define if your target C library provides stack protector support])
3249 # Check if TFmode long double should be used by default or not.
3250 # Some glibc targets used DFmode long double, but with glibc 2.4
3251 # and later they can use TFmode.
3253 powerpc*-*-*gnu* | \
3257 AC_ARG_WITH(long-double-128,
3258 [ --with-long-double-128 Use 128-bit long double by default.],
3259 gcc_cv_target_ldbl128="$with_long_double_128",
3260 [gcc_cv_target_ldbl128=no
3261 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3262 if test "x$with_sysroot" = x; then
3263 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3264 elif test "x$with_sysroot" = xyes; then
3265 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3267 glibc_header_dir="${with_sysroot}/usr/include"
3270 glibc_header_dir=/usr/include
3272 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3273 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3274 && gcc_cv_target_ldbl128=yes])
3277 if test x$gcc_cv_target_ldbl128 = xyes; then
3278 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3279 [Define if TFmode long double should be the default])
3282 # Find out what GC implementation we want, or may, use.
3284 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3292 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3295 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3300 echo "Using $GGC for garbage collection."
3302 # Use the system's zlib library.
3304 zlibinc="-I\$(srcdir)/../zlib"
3305 AC_ARG_WITH(system-zlib,
3306 [ --with-system-zlib use installed libz],
3313 dnl Very limited version of automake's enable-maintainer-mode
3315 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3316 dnl maintainer-mode is disabled by default
3317 AC_ARG_ENABLE(maintainer-mode,
3318 [ --enable-maintainer-mode
3319 enable make rules and dependencies not useful
3320 (and sometimes confusing) to the casual installer],
3321 maintainer_mode=$enableval,
3324 AC_MSG_RESULT($maintainer_mode)
3326 if test "$maintainer_mode" = "yes"; then
3337 # Make empty files to contain the specs and options for each language.
3338 # Then add #include lines to for a compiler that has specs and/or options.
3344 # These (without "all_") are set in each config-lang.in.
3345 # `language' must be a single word so is spelled singularly.
3350 all_outputs='Makefile gccbug mklibgcc libada-mk'
3351 # List of language makefile fragments.
3353 # List of language subdirectory makefiles. Deprecated.
3355 # Files for gengtype
3356 all_gtfiles="$target_gtfiles"
3357 # Files for gengtype with language
3358 all_gtfiles_files_langs=
3359 all_gtfiles_files_files=
3361 # These are the languages that are set in --enable-languages,
3362 # and are available in the GCC tree.
3363 all_selected_languages=
3365 # Add the language fragments.
3366 # Languages are added via two mechanisms. Some information must be
3367 # recorded in makefile variables, these are defined in config-lang.in.
3368 # We accumulate them and plug them into the main Makefile.
3369 # The other mechanism is a set of hooks for each of the main targets
3370 # like `clean', `install', etc.
3372 language_hooks="Make-hooks"
3374 for lang in ${srcdir}/*/config-lang.in
3377 test "$lang" = "${srcdir}/*/config-lang.in" && continue
3379 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3380 if test "x$lang_alias" = x
3382 echo "$lang doesn't set \$language." 1>&2
3385 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3386 subdirs="$subdirs $subdir"
3387 case ",$enable_languages," in
3389 all_selected_languages="$all_selected_languages $lang_alias"
3390 if test -f $srcdir/$subdir/lang-specs.h; then
3391 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3404 . ${srcdir}/$subdir/config-lang.in
3405 if test "x$language" = x
3407 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3412 case ",$enable_languages," in
3415 for i in $subdir_requires; do
3416 test -f "${srcdir}/$i/config-lang.in" && continue
3424 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3425 if test -f $srcdir/$subdir/lang.opt; then
3426 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3428 if test -f $srcdir/$subdir/$subdir-tree.def; then
3429 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3431 if test -f ${srcdir}/$subdir/Makefile.in
3432 then all_lang_makefiles="$subdir/Makefile"
3434 all_languages="$all_languages $language"
3435 if test "x$boot_language" = xyes
3437 all_boot_languages="$all_boot_languages $language"
3439 all_compilers="$all_compilers $compilers"
3440 all_stagestuff="$all_stagestuff $stagestuff"
3441 all_outputs="$all_outputs $outputs"
3442 all_gtfiles="$all_gtfiles $gtfiles"
3445 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3446 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3450 # Pick up gtfiles for c
3453 . ${srcdir}/c-config-lang.in
3454 all_gtfiles="$all_gtfiles $gtfiles"
3457 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3458 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3462 for language in $all_selected_languages
3464 check_languages="$check_languages check-$language"
3467 # We link each language in with a set of hooks, reached indirectly via
3468 # lang.${target}. Only do so for selected languages.
3472 target_list="all.cross start.encap rest.encap tags \
3473 install-common install-man install-info dvi html \
3474 uninstall info man srcextra srcman srcinfo \
3475 mostlyclean clean distclean maintainer-clean \
3476 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3478 for t in $target_list
3481 for lang in $all_selected_languages
3485 echo "lang.$t: $x" >> Make-hooks
3494 echo "dir ." > .gdbinit
3495 echo "dir ${srcdir}" >> .gdbinit
3496 if test x$gdb_needs_out_file_path = xyes
3498 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3500 if test "x$subdirs" != x; then
3503 echo "dir ${srcdir}/$s" >> .gdbinit
3506 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3508 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3509 # absolute path for gcc_tooldir based on inserting the number of up-directory
3510 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3511 # $(libsubdir)/@(unlibsubdir) based path.
3512 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3513 # make and thus we'd get different behavior depending on where we built the
3515 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3516 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3518 changequote(<<, >>)dnl
3519 # An explanation of the sed strings:
3520 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3521 # -e 's|/$||' match a trailing forward slash and eliminates it
3522 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3523 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3525 # (*) Note this pattern overwrites the first character of the string
3526 # with a forward slash if one is not already present. This is not a
3527 # problem because the exact names of the sub-directories concerned is
3528 # unimportant, just the number of them matters.
3530 # The practical upshot of these patterns is like this:
3532 # prefix exec_prefix result
3533 # ------ ----------- ------
3535 # /foo/ /foo/bar ../
3536 # /foo /foo/bar/ ../
3537 # /foo/ /foo/bar/ ../
3538 # /foo /foo/bar/ugg ../../
3541 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3542 changequote([, ])dnl
3544 AC_SUBST(gcc_tooldir)
3547 # Find a directory in which to install a shared libgcc.
3549 AC_ARG_ENABLE(version-specific-runtime-libs,
3550 [ --enable-version-specific-runtime-libs
3551 specify that runtime libraries should be
3552 installed in a compiler-specific directory])
3554 AC_ARG_WITH(slibdir,
3555 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3556 slibdir="$with_slibdir",
3557 if test "${enable_version_specific_runtime_libs+set}" = set; then
3558 slibdir='$(libsubdir)'
3559 elif test "$host" != "$target"; then
3560 slibdir='$(build_tooldir)/lib'
3566 objdir=`${PWDCMD-pwd}`
3569 AC_ARG_WITH(datarootdir,
3570 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3571 datarootdir="\${prefix}/$with_datarootdir",
3572 datarootdir='$(prefix)/share')
3573 AC_SUBST(datarootdir)
3576 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3577 docdir="\${prefix}/$with_docdir",
3578 docdir='$(datarootdir)')
3581 AC_ARG_WITH(htmldir,
3582 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3583 htmldir="\${prefix}/$with_htmldir",
3584 htmldir='$(docdir)')
3587 # Substitute configuration variables
3590 AC_SUBST(all_boot_languages)
3591 AC_SUBST(all_compilers)
3592 AC_SUBST(all_gtfiles)
3593 AC_SUBST(all_gtfiles_files_langs)
3594 AC_SUBST(all_gtfiles_files_files)
3595 AC_SUBST(all_lang_makefrags)
3596 AC_SUBST(all_lang_makefiles)
3597 AC_SUBST(all_languages)
3598 AC_SUBST(all_selected_languages)
3599 AC_SUBST(all_stagestuff)
3600 AC_SUBST(build_exeext)
3601 AC_SUBST(build_install_headers_dir)
3602 AC_SUBST(build_xm_file_list)
3603 AC_SUBST(build_xm_include_list)
3604 AC_SUBST(build_xm_defines)
3605 AC_SUBST(check_languages)
3606 AC_SUBST(cc_set_by_configure)
3607 AC_SUBST(quoted_cc_set_by_configure)
3608 AC_SUBST(cpp_install_dir)
3609 AC_SUBST(xmake_file)
3610 AC_SUBST(tmake_file)
3611 AC_SUBST(extra_gcc_objs)
3612 AC_SUBST(extra_headers_list)
3613 AC_SUBST(extra_objs)
3614 AC_SUBST(extra_parts)
3615 AC_SUBST(extra_passes)
3616 AC_SUBST(extra_programs)
3617 AC_SUBST(float_h_file)
3618 AC_SUBST(gcc_config_arguments)
3619 AC_SUBST(gcc_gxx_include_dir)
3620 AC_SUBST(host_exeext)
3621 AC_SUBST(host_xm_file_list)
3622 AC_SUBST(host_xm_include_list)
3623 AC_SUBST(host_xm_defines)
3624 AC_SUBST(out_host_hook_obj)
3626 AC_SUBST(lang_opt_files)
3627 AC_SUBST(lang_specs_files)
3628 AC_SUBST(lang_tree_files)
3629 AC_SUBST(local_prefix)
3631 AC_SUBST(objc_boehm_gc)
3633 AC_SUBST(out_object_file)
3634 AC_SUBST(stage_prefix_set_by_configure)
3635 AC_SUBST(quoted_stage_prefix_set_by_configure)
3636 AC_SUBST(thread_file)
3637 AC_SUBST(tm_file_list)
3638 AC_SUBST(tm_include_list)
3639 AC_SUBST(tm_defines)
3640 AC_SUBST(tm_p_file_list)
3641 AC_SUBST(tm_p_include_list)
3642 AC_SUBST(xm_file_list)
3643 AC_SUBST(xm_include_list)
3644 AC_SUBST(xm_defines)
3645 AC_SUBST(c_target_objs)
3646 AC_SUBST(cxx_target_objs)
3647 AC_SUBST(target_cpu_default)
3649 AC_SUBST_FILE(language_hooks)
3652 if test x${build} = x${host} ; then
3653 if test x${host} = x${target} ; then
3654 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3656 echo "Links are now set up to build a cross-compiler" 1>&2
3657 echo " from ${host} to ${target}." 1>&2
3660 if test x${host} = x${target} ; then
3661 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3662 echo " for ${target}." 1>&2
3664 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3665 echo " from ${host} to ${target}." 1>&2
3669 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3670 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3672 # Configure the subdirectories
3673 # AC_CONFIG_SUBDIRS($subdirs)
3675 # Create the Makefile
3676 # and configure language subdirectories
3677 AC_CONFIG_FILES($all_outputs)
3679 AC_CONFIG_COMMANDS([default],
3681 case ${CONFIG_HEADERS} in
3682 *auto-host.h:config.in*)
3685 # Make sure all the subdirs exist.
3686 for d in $subdirs doc build
3688 test -d $d || mkdir $d
3690 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3691 # bootstrapping and the installation procedure can still use
3692 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3693 # FLAGS_TO_PASS has been modified to solve the problem there.
3694 # This is virtually a duplicate of what happens in configure.lang; we do
3695 # an extra check to make sure this only happens if ln -s can be used.
3698 for d in ${subdirs} ; do
3699 STARTDIR=`${PWDCMD-pwd}`
3701 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3704 $LN_S ../$t $t 2>/dev/null
3711 [subdirs='$subdirs'])