2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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 # --------------------------------------------------------
1233 # Build, host, and target specific configuration fragments
1234 # --------------------------------------------------------
1236 # Collect build-machine-specific information.
1237 . ${srcdir}/config.build
1239 # Collect host-machine-specific information.
1240 . ${srcdir}/config.host
1244 # Collect target-machine-specific information.
1245 . ${srcdir}/config.gcc
1247 extra_objs="${host_extra_objs} ${extra_objs}"
1248 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1250 # Default the target-machine variables that were not explicitly set.
1251 if test x"$tm_file" = x
1252 then tm_file=$cpu_type/$cpu_type.h; fi
1254 if test x"$extra_headers" = x
1255 then extra_headers=; fi
1257 if test x$md_file = x
1258 then md_file=$cpu_type/$cpu_type.md; fi
1260 if test x$out_file = x
1261 then out_file=$cpu_type/$cpu_type.c; fi
1263 if test x"$tmake_file" = x
1264 then tmake_file=$cpu_type/t-$cpu_type
1267 if test x"$dwarf2" = xyes
1268 then tm_file="$tm_file tm-dwarf2.h"
1271 # Say what files are being used for the output code and MD file.
1272 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1273 echo "Using \`$srcdir/config/$md_file' as machine description file."
1275 # If any of the xm_file variables contain nonexistent files, warn
1276 # about them and drop them.
1279 for x in $build_xm_file; do
1280 if test -f $srcdir/config/$x
1282 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1288 for x in $host_xm_file; do
1289 if test -f $srcdir/config/$x
1291 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1297 for x in $xm_file; do
1298 if test -f $srcdir/config/$x
1300 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1306 for f in $tm_file; do
1309 if test $count = ax; then
1310 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1312 echo "Using the following target machine macro files:"
1313 for f in $tm_file; do
1314 echo " $srcdir/config/$f"
1318 if test x$need_64bit_hwint = xyes; then
1319 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1320 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1323 if test x$use_long_long_for_widest_fast_int = xyes; then
1324 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1325 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1326 efficiently supported by the host hardware.])
1330 for f in $host_xm_file; do
1333 if test $count = a; then
1335 elif test $count = ax; then
1336 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1338 echo "Using the following host machine macro files:"
1339 for f in $host_xm_file; do
1340 echo " $srcdir/config/$f"
1343 echo "Using ${out_host_hook_obj} for host machine hooks."
1345 if test "$host_xm_file" != "$build_xm_file"; then
1347 for f in $build_xm_file; do
1350 if test $count = a; then
1352 elif test $count = ax; then
1353 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1355 echo "Using the following build machine macro files:"
1356 for f in $build_xm_file; do
1357 echo " $srcdir/config/$f"
1364 AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1365 gcc_cv_mcontext_underscores,
1367 #include <sys/signal.h>
1368 #include <ucontext.h>
1369 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1371 gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1372 if test $gcc_cv_mcontext_underscores = yes; then
1373 AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1374 [mcontext_t fields start with __])
1383 # Check if a valid thread package
1384 case ${enable_threads} in
1387 target_thread_file='single'
1391 target_thread_file='single'
1393 aix | dce | gnat | irix | posix | posix95 | rtems | \
1394 single | solaris | vxworks | win32 )
1395 target_thread_file=${enable_threads}
1398 echo "${enable_threads} is an unknown thread package" 1>&2
1403 if test x${thread_file} = x; then
1404 # No thread file set by target-specific clauses in config.gcc,
1405 # so use file chosen by default logic above
1406 thread_file=${target_thread_file}
1409 # Make gthr-default.h if we have a thread file.
1411 if test $thread_file != single; then
1412 rm -f gthr-default.h
1413 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1414 gthread_flags=-DHAVE_GTHR_DEFAULT
1416 AC_SUBST(gthread_flags)
1423 if test x$enable___cxa_atexit = xyes || \
1424 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1425 if test x$host = x$target; then
1426 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1427 [echo "__cxa_atexit can't be enabled on this target"])
1429 # We can't check for __cxa_atexit when building a cross, so assume
1433 if test x$use_cxa_atexit = xyes; then
1434 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1435 [Define if you want to use __cxa_atexit, rather than atexit, to
1436 register C++ destructors for local statics and global objects.
1437 This is essential for fully standards-compliant handling of
1438 destructors, but requires __cxa_atexit in libc.])
1442 # Look for a file containing extra machine modes.
1443 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1444 extra_modes_file='$(srcdir)'/config/${extra_modes}
1445 AC_SUBST(extra_modes_file)
1446 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1447 [Define to the name of a file containing a list of extra machine modes
1448 for this architecture.])
1451 # Convert extra_options into a form suitable for Makefile use.
1453 for f in $extra_options; do
1454 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1456 AC_SUBST(extra_opt_files)
1458 # auto-host.h is the file containing items generated by autoconf and is
1459 # the first file included by config.h.
1460 # If host=build, it is correct to have bconfig include auto-host.h
1461 # as well. If host!=build, we are in error and need to do more
1462 # work to find out the build config parameters.
1463 if test x$host = x$build
1465 build_auto=auto-host.h
1467 # We create a subdir, then run autoconf in the subdir.
1468 # To prevent recursion we set host and build for the new
1469 # invocation of configure to the build for this invocation
1476 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1477 *) realsrcdir=../${srcdir};;
1479 saved_CFLAGS="${CFLAGS}"
1480 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1481 ${realsrcdir}/configure \
1482 --enable-languages=${enable_languages-all} \
1483 --target=$target_alias --host=$build_alias --build=$build_alias
1484 CFLAGS="${saved_CFLAGS}"
1486 # We just finished tests for the build machine, so rename
1487 # the file auto-build.h in the gcc directory.
1488 mv auto-host.h ../auto-build.h
1491 build_auto=auto-build.h
1493 AC_SUBST(build_subdir)
1495 tm_file="${tm_file} defaults.h"
1496 tm_p_file="${tm_p_file} tm-preds.h"
1497 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1498 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1499 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1500 # put this back in temporarily.
1501 xm_file="auto-host.h ansidecl.h ${xm_file}"
1508 # Compile in configure arguments.
1509 if test -f configargs.h ; then
1510 # Being re-configured.
1511 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1512 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1514 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1517 # Double all backslashes and backslash all quotes to turn
1518 # gcc_config_arguments into a C string.
1519 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1520 $gcc_config_arguments
1522 gcc_config_arguments_str=`cat conftest.out`
1525 cat > configargs.h <<EOF
1526 /* Generated automatically. */
1527 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1528 static const char thread_model[] = "$thread_file";
1530 static const struct {
1531 const char *name, *value;
1532 } configure_default_options[] = $configure_default_options;
1536 # Internationalization
1537 ZW_GNU_GETTEXT_SISTER_DIR
1539 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1540 # -liconv on the link line twice.
1541 case "$LIBINTL" in *$LIBICONV*)
1545 AC_ARG_ENABLE(secureplt,
1546 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1549 # Windows32 Registry support for specifying GCC installation paths.
1550 AC_ARG_ENABLE(win32-registry,
1551 [ --disable-win32-registry
1552 disable lookup of installation paths in the
1553 Registry on Windows hosts
1554 --enable-win32-registry enable registry lookup (default)
1555 --enable-win32-registry=KEY
1556 use KEY instead of GCC version as the last portion
1557 of the registry key],,)
1560 win32 | pe | cygwin* | mingw32* | uwin*)
1561 if test "x$enable_win32_registry" != xno; then
1562 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1565 if test "x$enable_win32_registry" != xno; then
1566 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1567 [Define to 1 if installation paths should be looked up in the Windows
1568 Registry. Ignored on non-Windows hosts.])
1570 if test "x$enable_win32_registry" != xyes \
1571 && test "x$enable_win32_registry" != x; then
1572 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1573 [Define to be the last component of the Windows registry key under which
1574 to look for installation paths. The full key used will be
1575 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1576 The default is the GCC version number.])
1582 # Get an absolute path to the GCC top-level source directory
1583 holddir=`${PWDCMD-pwd}`
1585 topdir=`${PWDCMD-pwd}`
1588 # Conditionalize the makefile for this host machine.
1590 for f in ${host_xmake_file}
1592 if test -f ${srcdir}/config/$f
1594 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1598 # Conditionalize the makefile for this target machine.
1600 for f in ${tmake_file}
1602 if test -f ${srcdir}/config/$f
1604 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1607 tmake_file="${tmake_file_}"
1609 # If the host doesn't support symlinks, modify CC in
1610 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1611 # Otherwise, we can use "CC=$(CC)".
1615 cc_set_by_configure="\$(CC)"
1616 quoted_cc_set_by_configure="\$(CC)"
1617 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1618 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1621 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1622 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1623 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1624 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1628 # This is a terrible hack which will go away some day.
1629 host_cc_for_libada=${CC}
1630 AC_SUBST(host_cc_for_libada)
1632 out_object_file=`basename $out_file .c`.o
1634 tm_file_list="options.h"
1635 tm_include_list="options.h"
1636 for f in $tm_file; do
1639 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1640 tm_include_list="${tm_include_list} $f"
1643 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1644 tm_include_list="${tm_include_list} config/$f"
1651 for f in $tm_p_file; do
1654 tm_p_file_list="${tm_p_file_list} $f"
1655 tm_p_include_list="${tm_p_include_list} $f"
1658 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1659 tm_p_include_list="${tm_p_include_list} config/$f"
1665 for f in $xm_file; do
1668 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1669 xm_include_list="${xm_include_list} $f"
1672 xm_file_list="${xm_file_list} $f"
1673 xm_include_list="${xm_include_list} $f"
1676 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1677 xm_include_list="${xm_include_list} config/$f"
1683 host_xm_include_list=
1684 for f in $host_xm_file; do
1687 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1688 host_xm_include_list="${host_xm_include_list} $f"
1691 host_xm_file_list="${host_xm_file_list} $f"
1692 host_xm_include_list="${host_xm_include_list} $f"
1695 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1696 host_xm_include_list="${host_xm_include_list} config/$f"
1702 for f in $build_xm_file; do
1705 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1706 build_xm_include_list="${build_xm_include_list} $f"
1708 auto-build.h | auto-host.h )
1709 build_xm_file_list="${build_xm_file_list} $f"
1710 build_xm_include_list="${build_xm_include_list} $f"
1713 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1714 build_xm_include_list="${build_xm_include_list} config/$f"
1719 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1720 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1721 CROSS= AC_SUBST(CROSS)
1722 ALL=all.internal AC_SUBST(ALL)
1723 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1725 if test "x$with_build_sysroot" != x; then
1726 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1728 # This value is used, even on a native system, because
1729 # CROSS_SYSTEM_HEADER_DIR is just
1730 # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1731 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1734 if test x$host != x$target
1736 CROSS="-DCROSS_COMPILE"
1738 SYSTEM_HEADER_DIR=$build_system_header_dir
1739 case "$host","$target" in
1740 # Darwin crosses can use the host system's libraries and headers,
1741 # because of the fat library support. Of course, it must be the
1742 # same version of Darwin on both sides. Allow the user to
1743 # just say --target=foo-darwin without a version number to mean
1744 # "the version on this system".
1745 *-*-darwin*,*-*-darwin*)
1746 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1747 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1748 if test $hostos = $targetos -o $targetos = darwin ; then
1750 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1755 i?86-*-*,x86_64-*-* \
1756 | powerpc*-*-*,powerpc64*-*-*)
1757 CROSS="$CROSS -DNATIVE_CROSS" ;;
1759 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1760 SYSTEM_HEADER_DIR=$build_system_header_dir
1763 # If this is a cross-compiler that does not
1764 # have its own set of headers then define
1767 # If this is using newlib, without having the headers available now,
1768 # then define inhibit_libc in LIBGCC2_CFLAGS.
1769 # This prevents libgcc2 from containing any code which requires libc
1772 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1773 test x$with_newlib = xyes ; } &&
1774 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1777 AC_SUBST(inhibit_libc)
1779 # When building gcc with a cross-compiler, we need to adjust things so
1780 # that the generator programs are still built with the native compiler.
1781 # Also, we cannot run fixincludes or fix-header.
1783 # These are the normal (build=host) settings:
1784 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1785 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1786 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1788 # Possibly disable fixproto, on a per-target basis.
1789 case ${use_fixproto} in
1794 STMP_FIXPROTO=stmp-fixproto
1797 AC_SUBST(STMP_FIXPROTO)
1799 # And these apply if build != host, or we are generating coverage data
1800 if test x$build != x$host || test "x$coverage_flags" != x
1802 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1804 if test "x$TARGET_SYSTEM_ROOT" = x; then
1805 if test "x$STMP_FIXPROTO" != x; then
1806 STMP_FIXPROTO=stmp-install-fixproto
1811 # Expand extra_headers to include complete path.
1812 # This substitutes for lots of t-* files.
1814 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1815 for file in ${extra_headers} ; do
1816 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1819 # Define collect2 in Makefile.
1820 case $host_can_use_collect2 in
1822 *) collect2='collect2$(exeext)' ;;
1824 AC_SUBST([collect2])
1826 # Add a definition of USE_COLLECT2 if system wants one.
1827 case $use_collect2 in
1828 no) use_collect2= ;;
1831 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1832 xm_defines="${xm_defines} USE_COLLECT2"
1833 case $host_can_use_collect2 in
1835 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1841 # ---------------------------
1842 # Assembler & linker features
1843 # ---------------------------
1845 # Identify the assembler which will work hand-in-glove with the newly
1846 # built GCC, so that we can examine its features. This is the assembler
1847 # which will be driven by the driver program.
1849 # If build != host, and we aren't building gas in-tree, we identify a
1850 # build->target assembler and hope that it will have the same features
1851 # as the host->target assembler we'll be using.
1852 gcc_cv_gas_major_version=
1853 gcc_cv_gas_minor_version=
1854 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1856 m4_pattern_allow([AS_FOR_TARGET])dnl
1857 AS_VAR_SET_IF(gcc_cv_as,, [
1858 if test -x "$DEFAULT_ASSEMBLER"; then
1859 gcc_cv_as="$DEFAULT_ASSEMBLER"
1860 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1861 && test -f ../gas/Makefile \
1862 && test x$build = x$host; then
1863 gcc_cv_as=../gas/as-new$build_exeext
1864 elif test -x as$build_exeext; then
1865 # Build using assembler in the current directory.
1866 gcc_cv_as=./as$build_exeext
1867 elif test -x $AS_FOR_TARGET; then
1868 gcc_cv_as="$AS_FOR_TARGET"
1870 AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1873 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1874 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1876 AC_MSG_CHECKING(what assembler to use)
1877 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1878 # Single tree build which includes gas. We want to prefer it
1879 # over whatever linker top-level may have detected, since
1880 # we'll use what we're building after installation anyway.
1881 AC_MSG_RESULT(newly built gas)
1883 _gcc_COMPUTE_GAS_VERSION
1884 in_tree_gas_is_elf=no
1885 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1886 || (grep 'obj_format = multi' ../gas/Makefile \
1887 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1889 in_tree_gas_is_elf=yes
1892 AC_MSG_RESULT($gcc_cv_as)
1896 # Identify the linker which will work hand-in-glove with the newly
1897 # built GCC, so that we can examine its features. This is the linker
1898 # which will be driven by the driver program.
1900 # If build != host, and we aren't building gas in-tree, we identify a
1901 # build->target linker and hope that it will have the same features
1902 # as the host->target linker we'll be using.
1903 gcc_cv_gld_major_version=
1904 gcc_cv_gld_minor_version=
1905 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1906 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1908 AS_VAR_SET_IF(gcc_cv_ld,, [
1909 if test -x "$DEFAULT_LINKER"; then
1910 gcc_cv_ld="$DEFAULT_LINKER"
1911 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1912 && test -f ../ld/Makefile \
1913 && test x$build = x$host; then
1914 gcc_cv_ld=../ld/ld-new$build_exeext
1915 elif test -x collect-ld$build_exeext; then
1916 # Build using linker in the current directory.
1917 gcc_cv_ld=./collect-ld$build_exeext
1918 elif test -x $LD_FOR_TARGET; then
1919 gcc_cv_ld="$LD_FOR_TARGET"
1921 AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1924 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1925 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1927 AC_MSG_CHECKING(what linker to use)
1928 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1929 # Single tree build which includes ld. We want to prefer it
1930 # over whatever linker top-level may have detected, since
1931 # we'll use what we're building after installation anyway.
1932 AC_MSG_RESULT(newly built ld)
1934 in_tree_ld_is_elf=no
1935 if (grep 'EMUL = .*elf' ../ld/Makefile \
1936 || grep 'EMUL = .*linux' ../ld/Makefile \
1937 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1938 in_tree_ld_is_elf=yes
1940 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
1943 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1944 if test x$gcc_cv_gld_version != x; then
1948 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1949 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1952 AC_MSG_RESULT($gcc_cv_ld)
1956 # Figure out what nm we will be using.
1957 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1958 AS_VAR_SET_IF(gcc_cv_nm,, [
1959 if test -f $gcc_cv_binutils_srcdir/configure.in \
1960 && test -f ../binutils/Makefile \
1961 && test x$build = x$host; then
1962 gcc_cv_nm=../binutils/nm-new$build_exeext
1963 elif test -x nm$build_exeext; then
1964 gcc_cv_nm=./nm$build_exeext
1965 elif test -x $NM_FOR_TARGET; then
1966 gcc_cv_nm="$NM_FOR_TARGET"
1968 AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1971 AC_MSG_CHECKING(what nm to use)
1972 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1973 # Single tree build which includes binutils.
1974 AC_MSG_RESULT(newly built nm)
1977 AC_MSG_RESULT($gcc_cv_nm)
1981 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1982 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1984 # Figure out what objdump we will be using.
1985 AS_VAR_SET_IF(gcc_cv_objdump,, [
1986 if test -f $gcc_cv_binutils_srcdir/configure.in \
1987 && test -f ../binutils/Makefile \
1988 && test x$build = x$host; then
1989 # Single tree build which includes binutils.
1990 gcc_cv_objdump=../binutils/objdump$build_exeext
1991 elif test -x objdump$build_exeext; then
1992 gcc_cv_objdump=./objdump$build_exeext
1993 elif test -x $OBJDUMP_FOR_TARGET; then
1994 gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1996 AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1999 AC_MSG_CHECKING(what objdump to use)
2000 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2001 # Single tree build which includes binutils.
2002 AC_MSG_RESULT(newly built objdump)
2003 elif test x$gcc_cv_objdump = x; then
2004 AC_MSG_RESULT(not found)
2006 AC_MSG_RESULT($gcc_cv_objdump)
2009 # Figure out what assembler alignment features are present.
2010 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2014 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2015 [Define if your assembler supports .balign and .p2align.])])
2017 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2020 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2021 [Define if your assembler supports specifying the maximum number
2022 of bytes to skip when using the GAS .p2align command.])])
2024 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2026 [conftest_label1: .word 0
2028 conftest_label2: .word 0
2030 [if test x$gcc_cv_nm != x; then
2031 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2032 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2033 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2035 else gcc_cv_as_subsection_m1=yes
2037 rm -f conftest.nm1 conftest.nm2
2039 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2040 [Define if your assembler supports .subsection and .subsection -1 starts
2041 emitting at the beginning of your section.])])
2043 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2046 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2048 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2050 [ .weakref foobar, barfnot],,
2051 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2053 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2056 .NSUBSPA $CODE$,COMDAT],,
2057 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2059 # .hidden needs to be supported in both the assembler and the linker,
2060 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2061 # This is irritatingly difficult to feature test for; we have to check the
2062 # date string after the version number. If we've got an in-tree
2063 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2065 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2066 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2071 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2072 [if test $in_tree_ld = yes ; then
2074 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2075 && test $in_tree_ld_is_elf = yes; then
2076 gcc_cv_ld_hidden=yes
2079 gcc_cv_ld_hidden=yes
2080 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2081 if echo "$ld_ver" | grep GNU > /dev/null; then
2083 ld_vers=`echo $ld_ver | sed -n \
2084 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2085 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2086 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2087 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2088 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2089 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2090 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2091 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2092 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2093 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2094 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2095 if test 0"$ld_date" -lt 20020404; then
2096 if test -n "$ld_date"; then
2097 # If there was date string, but was earlier than 2002-04-04, fail
2099 elif test -z "$ld_vers"; then
2100 # If there was no date string nor ld version number, something is wrong
2103 test -z "$ld_vers_patch" && ld_vers_patch=0
2104 if test "$ld_vers_major" -lt 2; then
2106 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2107 gcc_cv_ld_hidden="no"
2108 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2116 hppa64*-*-hpux* | ia64*-*-hpux*)
2117 gcc_cv_ld_hidden=yes
2125 libgcc_visibility=no
2126 AC_SUBST(libgcc_visibility)
2127 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2128 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2129 libgcc_visibility=yes
2130 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2131 [Define if your assembler and linker support .hidden.])
2134 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2135 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2143 [# GAS versions before 2.11 do not support uleb128,
2144 # despite appearing to.
2145 # ??? There exists an elf-specific test that will crash
2146 # the assembler. Perhaps it's better to figure out whether
2147 # arbitrary sections are supported and try the test.
2148 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2149 if echo "$as_ver" | grep GNU > /dev/null; then
2151 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2152 as_major=`echo $as_ver | sed 's/\..*//'`
2153 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2155 if test $as_major -eq 2 && test $as_minor -lt 11
2157 else gcc_cv_as_leb128=yes
2160 [AC_DEFINE(HAVE_AS_LEB128, 1,
2161 [Define if your assembler supports .sleb128 and .uleb128.])])
2163 # GAS versions up to and including 2.11.0 may mis-optimize
2165 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2173 .section .eh_frame,"aw",@progbits
2175 .4byte .LECIE1-.LSCIE1
2189 .4byte .LEFDE1-.LASFDE1
2191 .4byte .LASFDE1-__FRAME_BEGIN__
2199 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2200 cat > conftest.lit <<EOF
2201 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2202 0010 01000000 12000000 18000000 00000000 ................
2203 0020 08000000 04080000 0044 .........D @&t@
2205 cat > conftest.big <<EOF
2206 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2207 0010 00000001 00000012 00000018 00000000 ................
2208 0020 00000008 04000000 0844 .........D @&t@
2210 # If the assembler didn't choke, and we can objdump,
2211 # and we got the correct data, then succeed.
2212 if test x$gcc_cv_objdump != x \
2213 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2214 | tail -3 > conftest.got \
2215 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2216 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2218 gcc_cv_as_eh_frame=yes
2219 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2220 gcc_cv_as_eh_frame=buggy
2222 # Uh oh, what do we do now?
2223 gcc_cv_as_eh_frame=no
2226 if test $gcc_cv_as_eh_frame = buggy; then
2227 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2228 [Define if your assembler mis-optimizes .eh_frame data.])
2231 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2232 [elf,2,12,0], [--fatal-warnings],
2233 [.section .rodata.str, "aMS", @progbits, 1])
2234 if test $gcc_cv_as_shf_merge = no; then
2235 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2236 [elf,2,12,0], [--fatal-warnings],
2237 [.section .rodata.str, "aMS", %progbits, 1])
2239 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2240 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2241 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2243 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2244 [elf,2,16,0], [--fatal-warnings],
2245 [.section .text,"axG",@progbits,.foo,comdat])
2246 if test $gcc_cv_as_comdat_group = yes; then
2247 gcc_cv_as_comdat_group_percent=no
2249 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2250 [elf,2,16,0], [--fatal-warnings],
2251 [.section .text,"axG",%progbits,.foo,comdat])
2253 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2255 if test 0"$ld_date" -lt 20050308; then
2256 if test -n "$ld_date"; then
2257 # If there was date string, but was earlier than 2005-03-08, fail
2259 elif test "$ld_vers_major" -lt 2; then
2261 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2266 # assume linkers other than GNU ld don't support COMDAT group
2269 if test $comdat_group = no; then
2270 gcc_cv_as_comdat_group=no
2271 gcc_cv_as_comdat_group_percent=no
2273 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2274 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2275 [Define 0/1 if your assembler and linker support COMDAT groups.])
2277 # Thread-local storage - the check is heavily parametrized.
2286 .section ".tdata","awT",@progbits
2289 ldq $27,__tls_get_addr($29) !literal!1
2290 lda $16,foo($29) !tlsgd!1
2291 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2292 ldq $27,__tls_get_addr($29) !literal!2
2293 lda $16,foo($29) !tlsldm!2
2294 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2295 ldq $1,foo($29) !gotdtprel
2296 ldah $2,foo($29) !dtprelhi
2297 lda $3,foo($2) !dtprello
2298 lda $4,foo($29) !dtprel
2299 ldq $1,foo($29) !gottprel
2300 ldah $2,foo($29) !tprelhi
2301 lda $3,foo($2) !tprello
2302 lda $4,foo($29) !tprel'
2305 tls_as_opt=--fatal-warnings
2309 .section ".tdata","awT",@progbits
2321 .section ".tdata","awT",@progbits
2325 addil LT%foo-$tls_gdidx$,gp
2326 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2329 addil LT%foo-$tls_ldidx$,gp
2331 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2332 addil LR%foo-$tls_dtpoff$,%ret0
2333 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2335 addil LT%foo-$tls_ieoff$,gp
2336 ldw RT%foo-$tls_ieoff$(%r1),%t2
2339 addil LR%foo-$tls_leoff$,%t1
2340 ldo RR%foo-$tls_leoff$(%r1),%t2'
2343 tls_as_opt=--fatal-warnings
2347 .section ".tdata","awT",%progbits
2360 .section ".tdata","awT",@progbits
2364 leal foo@TLSGD(,%ebx,1), %eax
2365 leal foo@TLSLDM(%ebx), %eax
2366 leal foo@DTPOFF(%eax), %edx
2367 movl foo@GOTTPOFF(%ebx), %eax
2368 subl foo@GOTTPOFF(%ebx), %eax
2369 addl foo@GOTNTPOFF(%ebx), %eax
2370 movl foo@INDNTPOFF, %eax
2371 movl $foo@TPOFF, %eax
2372 subl $foo@TPOFF, %eax
2373 leal foo@NTPOFF(%ecx), %eax'
2376 tls_as_opt=--fatal-warnings
2380 .section ".tdata","awT",@progbits
2384 leaq foo@TLSGD(%rip), %rdi
2385 leaq foo@TLSLD(%rip), %rdi
2386 leaq foo@DTPOFF(%rax), %rdx
2387 movq foo@GOTTPOFF(%rip), %rax
2388 movq $foo@TPOFF, %rax'
2391 tls_as_opt=--fatal-warnings
2395 .section ".tdata","awT",@progbits
2398 addl r16 = @ltoff(@dtpmod(foo#)), gp
2399 addl r17 = @ltoff(@dtprel(foo#)), gp
2400 addl r18 = @ltoff(@tprel(foo#)), gp
2401 addl r19 = @dtprel(foo#), gp
2402 adds r21 = @dtprel(foo#), r13
2403 movl r23 = @dtprel(foo#)
2404 addl r20 = @tprel(foo#), gp
2405 adds r22 = @tprel(foo#), r13
2406 movl r24 = @tprel(foo#)'
2409 tls_as_opt=--fatal-warnings
2413 .section .tdata,"awT",@progbits
2417 addiu $4, $28, %tlsgd(x)
2418 addiu $4, $28, %tlsldm(x)
2419 lui $4, %dtprel_hi(x)
2420 addiu $4, $4, %dtprel_lo(x)
2421 lw $4, %gottprel(x)($28)
2422 lui $4, %tprel_hi(x)
2423 addiu $4, $4, %tprel_lo(x)'
2426 tls_as_opt='-32 --fatal-warnings'
2430 .section ".tdata","awT",@progbits
2438 addi 3,31,ld0@got@tlsgd
2440 addi 3,31,x1@got@tlsld
2443 addis 9,3,x2@dtprel@ha
2444 addi 9,9,x2@dtprel@l
2445 lwz 9,x3@got@tprel(31)
2448 addis 9,2,x2@tprel@ha
2449 addi 9,9,x2@tprel@l'
2452 tls_as_opt="-a32 --fatal-warnings"
2456 .section ".tdata","awT",@progbits
2464 addi 3,2,ld0@got@tlsgd
2470 addi 3,2,x1@got@tlsld
2476 addis 9,3,x2@dtprel@ha
2477 addi 9,9,x2@dtprel@l
2480 ld 9,x3@got@dtprel(2)
2486 tls_as_opt="-a64 --fatal-warnings"
2490 .section ".tdata","awT",@progbits
2499 l %r1,foo@GOTNTPOFF(%r12)
2500 l %r1,0(%r1):tls_load:foo
2501 bas %r14,0(%r1,%r13):tls_gdcall:foo
2502 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2505 tls_as_opt="-m31 --fatal-warnings"
2509 .section ".tdata","awT",@progbits
2517 lg %r1,foo@GOTNTPOFF(%r12)
2518 larl %r1,foo@INDNTPOFF
2519 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2520 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2523 tls_as_opt="-m64 -Aesame --fatal-warnings"
2525 sh-*-* | sh[34]-*-*)
2527 .section ".tdata","awT",@progbits
2537 tls_as_opt=--fatal-warnings
2541 sparc*-sun-solaris2.[56789]*)
2542 # TLS was introduced in the Solaris 9 4/04 release but
2543 # we do not enable it by default on Solaris 9 either.
2544 if test "x$enable_tls" = xyes ; then
2550 sparc*-sun-solaris2.*)
2557 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2559 .section ".tdata",#alloc,#write,#tls
2562 sethi %tgd_hi22(foo), %o0
2563 add %o0, %tgd_lo10(foo), %o1
2564 add %l7, %o1, %o0, %tgd_add(foo)
2565 call __tls_get_addr, %tgd_call(foo)
2566 sethi %tldm_hi22(foo), %l1
2567 add %l1, %tldm_lo10(foo), %l2
2568 add %l7, %l2, %o0, %tldm_add(foo)
2569 call __tls_get_addr, %tldm_call(foo)
2570 sethi %tldo_hix22(foo), %l3
2571 xor %l3, %tldo_lox10(foo), %l4
2572 add %o0, %l4, %l5, %tldo_add(foo)
2573 sethi %tie_hi22(foo), %o3
2574 add %o3, %tie_lo10(foo), %o3
2575 ld [%l7 + %o3], %o2, %tie_ld(foo)
2576 add %g7, %o2, %o4, %tie_add(foo)
2577 sethi %tle_hix22(foo), %l1
2578 xor %l1, %tle_lox10(foo), %o5
2579 ld [%g7 + %o5], %o1'
2584 .section ".tdata","awT",@progbits
2587 sethi %tgd_hi22(foo), %o0
2588 add %o0, %tgd_lo10(foo), %o1
2589 add %l7, %o1, %o0, %tgd_add(foo)
2590 call __tls_get_addr, %tgd_call(foo)
2591 sethi %tldm_hi22(foo), %l1
2592 add %l1, %tldm_lo10(foo), %l2
2593 add %l7, %l2, %o0, %tldm_add(foo)
2594 call __tls_get_addr, %tldm_call(foo)
2595 sethi %tldo_hix22(foo), %l3
2596 xor %l3, %tldo_lox10(foo), %l4
2597 add %o0, %l4, %l5, %tldo_add(foo)
2598 sethi %tie_hi22(foo), %o3
2599 add %o3, %tie_lo10(foo), %o3
2600 ld [%l7 + %o3], %o2, %tie_ld(foo)
2601 add %g7, %o2, %o4, %tie_add(foo)
2602 sethi %tle_hix22(foo), %l1
2603 xor %l1, %tle_lox10(foo), %o5
2604 ld [%g7 + %o5], %o1'
2607 tls_as_opt="-32 --fatal-warnings"
2613 if test "x$enable_tls" = xno ; then
2614 : # TLS explicitly disabled.
2615 elif test "x$enable_tls" = xyes ; then
2616 set_have_as_tls=yes # TLS explicitly enabled.
2617 elif test -z "$tls_first_major"; then
2618 : # If we don't have a check, assume no support.
2620 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2621 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2622 [set_have_as_tls=yes])
2624 if test $set_have_as_tls = yes ; then
2625 AC_DEFINE(HAVE_AS_TLS, 1,
2626 [Define if your assembler supports thread-local storage.])
2629 # Target-specific assembler checks.
2631 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2632 gcc_cv_ld_static_dynamic=no
2633 if test $in_tree_ld = yes ; then
2634 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2635 gcc_cv_ld_static_dynamic=yes
2637 elif test x$gcc_cv_ld != x; then
2638 # Check if linker supports -Bstatic/-Bdynamic option
2639 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2640 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2641 gcc_cv_ld_static_dynamic=yes
2644 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2645 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2646 [Define if your linker supports -Bstatic/-Bdynamic option.])
2648 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2650 if test x"$demangler_in_ld" = xyes; then
2651 AC_MSG_CHECKING(linker --demangle support)
2652 gcc_cv_ld_demangle=no
2653 if test $in_tree_ld = yes; then
2654 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2655 gcc_cv_ld_demangle=yes
2657 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2658 # Check if the GNU linker supports --demangle option
2659 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2660 gcc_cv_ld_demangle=yes
2663 if test x"$gcc_cv_ld_demangle" = xyes; then
2664 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2665 [Define if your linker supports --demangle option.])
2667 AC_MSG_RESULT($gcc_cv_ld_demangle)
2671 # All TARGET_ABI_OSF targets.
2672 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2673 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2674 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2677 extbl $3, $2, $3 !lituse_bytoff!1
2678 ldq $2, a($29) !literal!1
2679 ldq $4, b($29) !literal!2
2680 ldq_u $3, 0($2) !lituse_base!1
2681 ldq $27, f($29) !literal!5
2682 jsr $26, ($27), f !lituse_jsr!5
2683 ldah $29, 0($26) !gpdisp!3
2684 lda $0, c($29) !gprel
2685 ldah $1, d($29) !gprelhigh
2686 lda $1, d($1) !gprellow
2687 lda $29, 0($29) !gpdisp!3],,
2688 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2689 [Define if your assembler supports explicit relocations.])])
2690 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2691 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2694 ldq $27, a($29) !literal!1
2695 jsr $26, ($27), a !lituse_jsrdirect!1],,
2696 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2697 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2701 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2702 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2703 [-no-mul-bug-abort], [.text],,
2704 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2705 [Define if your assembler supports the -no-mul-bug-abort option.])])
2709 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2710 [.register %g2, #scratch],,
2711 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2712 [Define if your assembler supports .register.])])
2714 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2716 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2717 [Define if your assembler supports -relax option.])])
2719 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2720 gcc_cv_as_sparc_ua_pcrel,,
2728 .uaword %r_disp32(foo)],
2729 [if test x$gcc_cv_ld != x \
2730 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2731 gcc_cv_as_sparc_ua_pcrel=yes
2734 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2735 [Define if your assembler and linker support unaligned PC relative relocs.])
2737 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2738 gcc_cv_as_sparc_ua_pcrel_hidden,,
2743 .uaword %r_disp32(foo)
2744 .byte 0x32, 0x33, 0x34
2749 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2750 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2751 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2752 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2753 if $gcc_cv_objdump -R conftest 2> /dev/null \
2754 | grep 'DISP32' > /dev/null 2>&1; then
2757 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2761 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2762 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2763 ]) # unaligned pcrel relocs
2765 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2766 gcc_cv_as_sparc_offsetable_lo10,,
2769 or %g1, %lo(ab) + 12, %g1
2770 or %g1, %lo(ab + 12), %g1],
2771 [if test x$gcc_cv_objdump != x \
2772 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2773 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2774 gcc_cv_as_sparc_offsetable_lo10=yes
2776 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2777 [Define if your assembler supports offsetable %lo().])])
2781 i[34567]86-*-* | x86_64-*-*)
2784 cygwin* | pe | mingw32*)
2785 # Used for DWARF 2 in PE
2786 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2787 gcc_cv_as_ix86_pe_secrel32,
2793 [if test x$gcc_cv_ld != x \
2794 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2795 gcc_cv_as_ix86_pe_secrel32=yes
2798 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2799 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2803 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2804 gcc_cv_as_ix86_filds_fists,
2805 [2,9,0],, [filds mem; fists mem],,
2806 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2807 [Define if your assembler uses the new HImode fild and fist notation.])])
2809 gcc_GAS_CHECK_FEATURE([cmov syntax],
2810 gcc_cv_as_ix86_cmov_sun_syntax,,,
2811 [cmovl.l %edx, %eax],,
2812 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2813 [Define if your assembler supports the Sun syntax for cmov.])])
2815 # This one is used unconditionally by i386.[ch]; it is to be defined
2816 # to 1 if the feature is present, 0 otherwise.
2817 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2818 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2824 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2825 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2826 [Define true if the assembler supports '.long foo@GOTOFF'.])
2830 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2831 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2833 addl r15 = @ltoffx(x#), gp
2835 ld8.mov r16 = [[r15]], x#],,
2836 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2837 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2843 *-*-aix*) conftest_s=' .machine "pwr5"
2847 gcc_GAS_CHECK_FEATURE([.machine directive support],
2848 gcc_cv_as_machine_directive,,,
2849 [ .machine ppc7400])
2850 if test x$gcc_cv_as_machine_directive != xyes; then
2851 echo "*** This target requires an assembler supporting \".machine\"" >&2
2852 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2853 test x$build = x$target && exit 1
2857 *) conftest_s=' .machine power4
2862 gcc_GAS_CHECK_FEATURE([mfcr field support],
2863 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2865 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2866 [Define if your assembler supports mfcr field.])])
2869 *-*-aix*) conftest_s=' .machine "pwr5"
2872 *) conftest_s=' .machine power5
2877 gcc_GAS_CHECK_FEATURE([popcntb support],
2878 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2880 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2881 [Define if your assembler supports popcntb field.])])
2884 *-*-aix*) conftest_s=' .machine "pwr5x"
2887 *) conftest_s=' .machine power5
2892 gcc_GAS_CHECK_FEATURE([fp round support],
2893 gcc_cv_as_powerpc_fprnd, [2,17,0],,
2895 [AC_DEFINE(HAVE_AS_FPRND, 1,
2896 [Define if your assembler supports fprnd.])])
2899 *-*-aix*) conftest_s=' .csect .text[[PR]]
2901 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2905 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2906 *) conftest_s=' .text
2908 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2911 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2912 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2914 [AC_DEFINE(HAVE_AS_REL16, 1,
2915 [Define if your assembler supports R_PPC_REL16 relocs.])])
2919 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2920 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2921 [ lw $4,%gp_rel(foo)($4)],,
2922 [if test x$target_cpu_default = x
2923 then target_cpu_default=MASK_EXPLICIT_RELOCS
2924 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2929 # Mips and HP-UX need the GNU assembler.
2930 # Linux on IA64 might be able to use the Intel assembler.
2933 mips*-*-* | *-*-hpux* )
2934 if test x$gas_flag = xyes \
2935 || test x"$host" != x"$build" \
2936 || test ! -x "$gcc_cv_as" \
2937 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2940 echo "*** This configuration requires the GNU assembler" >&2
2946 # ??? Not all targets support dwarf2 debug_line, even within a version
2947 # of gas. Moreover, we need to emit a valid instruction to trigger any
2948 # info to the output file. So, as supported targets are added to gas 2.11,
2949 # add some instruction here to (also) show we expect this might work.
2950 # ??? Once 2.11 is released, probably need to add first known working
2951 # version to the per-target configury.
2953 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2954 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2955 | xstormy16*-*-* | cris-*-* | xtensa-*-* | bfin-*-*)
2958 ia64*-*-* | s390*-*-*)
2965 if test x"$insn" != x; then
2967 .file 1 \"conftest.s\"
2970 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2971 gcc_cv_as_dwarf2_debug_line,
2972 [elf,2,11,0],, [$conftest_s],
2973 [if test x$gcc_cv_objdump != x \
2974 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2975 | grep debug_line > /dev/null 2>&1; then
2976 gcc_cv_as_dwarf2_debug_line=yes
2979 # The .debug_line file table must be in the exact order that
2980 # we specified the files, since these indices are also used
2981 # by DW_AT_decl_file. Approximate this test by testing if
2982 # the assembler bitches if the same index is assigned twice.
2983 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2984 gcc_cv_as_dwarf2_file_buggy,,,
2988 if test $gcc_cv_as_dwarf2_debug_line = yes \
2989 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2990 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2991 [Define if your assembler supports dwarf2 .file/.loc directives,
2992 and preserves file table indices exactly as given.])
2995 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2996 gcc_cv_as_gdwarf2_flag,
2997 [elf,2,11,0], [--gdwarf2], [$insn],,
2998 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2999 [Define if your assembler supports the --gdwarf2 option.])])
3001 gcc_GAS_CHECK_FEATURE([--gstabs option],
3002 gcc_cv_as_gstabs_flag,
3003 [elf,2,11,0], [--gstabs], [$insn],
3004 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3005 # and warns about it, but still exits successfully. So check for
3007 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3009 else gcc_cv_as_gstabs_flag=yes
3011 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3012 [Define if your assembler supports the --gstabs option.])])
3015 AC_MSG_CHECKING(linker read-only and read-write section mixing)
3016 gcc_cv_ld_ro_rw_mix=unknown
3017 if test $in_tree_ld = yes ; then
3018 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
3019 && test $in_tree_ld_is_elf = yes; then
3020 gcc_cv_ld_ro_rw_mix=read-write
3022 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3023 echo '.section myfoosect, "a"' > conftest1.s
3024 echo '.section myfoosect, "aw"' > conftest2.s
3025 echo '.byte 1' >> conftest2.s
3026 echo '.section myfoosect, "a"' > conftest3.s
3027 echo '.byte 0' >> conftest3.s
3028 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
3029 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
3030 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
3031 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
3032 conftest2.o conftest3.o > /dev/null 2>&1; then
3033 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
3034 | sed -e '/myfoosect/!d' -e N`
3035 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
3036 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
3037 gcc_cv_ld_ro_rw_mix=read-only
3039 gcc_cv_ld_ro_rw_mix=read-write
3044 rm -f conftest.* conftest[123].*
3047 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
3048 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
3049 [Define if your linker links a mix of read-only
3050 and read-write sections into a read-write section.])
3052 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
3054 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3055 gcc_cv_ld_eh_frame_hdr=no
3056 if test $in_tree_ld = yes ; then
3057 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3058 && test $in_tree_ld_is_elf = yes; then
3059 gcc_cv_ld_eh_frame_hdr=yes
3061 elif test x$gcc_cv_ld != x; then
3062 # Check if linker supports --eh-frame-hdr option
3063 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3064 gcc_cv_ld_eh_frame_hdr=yes
3067 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3068 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3069 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3070 [Define if your linker supports --eh-frame-hdr option.])
3072 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3074 AC_MSG_CHECKING(linker position independent executable support)
3076 if test $in_tree_ld = yes ; then
3077 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3078 && test $in_tree_ld_is_elf = yes; then
3081 elif test x$gcc_cv_ld != x; then
3082 # Check if linker supports -pie option
3083 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3087 if test x"$gcc_cv_ld_pie" = xyes; then
3088 AC_DEFINE(HAVE_LD_PIE, 1,
3089 [Define if your linker supports -pie option.])
3091 AC_MSG_RESULT($gcc_cv_ld_pie)
3097 AC_CACHE_CHECK(linker --as-needed support,
3098 gcc_cv_ld_as_needed,
3099 [gcc_cv_ld_as_needed=no
3100 if test $in_tree_ld = yes ; then
3101 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3102 && test $in_tree_ld_is_elf = yes; then
3103 gcc_cv_ld_as_needed=yes
3105 elif test x$gcc_cv_ld != x; then
3106 # Check if linker supports --as-needed and --no-as-needed options
3107 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3108 gcc_cv_ld_as_needed=yes
3112 if test x"$gcc_cv_ld_as_needed" = xyes; then
3113 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3114 [Define if your linker supports --as-needed and --no-as-needed options.])
3117 case "$target:$tm_file" in
3118 powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3119 AC_CACHE_CHECK(linker support for omitting dot symbols,
3120 gcc_cv_ld_no_dot_syms,
3121 [gcc_cv_ld_no_dot_syms=no
3122 if test $in_tree_ld = yes ; then
3123 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3124 gcc_cv_ld_no_dot_syms=yes
3126 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3127 cat > conftest1.s <<EOF
3131 cat > conftest2.s <<EOF
3132 .section ".opd","aw"
3137 .quad .LEfoo,.TOC.@tocbase,0
3143 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3144 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3145 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3146 gcc_cv_ld_no_dot_syms=yes
3148 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3151 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3152 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3153 [Define if your PowerPC64 linker only needs function descriptor syms.])
3158 AC_CACHE_CHECK(linker --sysroot support,
3160 [gcc_cv_ld_sysroot=no
3161 if test $in_tree_ld = yes ; then
3162 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3163 gcc_cv_ld_sysroot=yes
3165 elif test x$gcc_cv_ld != x; then
3166 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3167 gcc_cv_ld_sysroot=yes
3170 if test x"$gcc_cv_ld_sysroot" = xyes; then
3171 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3172 [Define if your linker supports --sysroot.])
3175 if test x$with_sysroot = x && test x$host = x$target \
3176 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
3177 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3178 [Define to PREFIX/include if cpp should also search that directory.])
3181 # Test for stack protector support in target C library.
3184 AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3185 gcc_cv_libc_provides_ssp,
3186 [gcc_cv_libc_provides_ssp=no
3187 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3188 if test "x$with_sysroot" = x; then
3189 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3190 elif test "x$with_sysroot" = xyes; then
3191 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3193 glibc_header_dir="${with_sysroot}/usr/include"
3196 glibc_header_dir=/usr/include
3198 # glibc 2.4 and later provides __stack_chk_fail and
3199 # either __stack_chk_guard, or TLS access to stack guard canary.
3200 if test -f $glibc_header_dir/features.h \
3201 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3202 $glibc_header_dir/features.h > /dev/null; then
3203 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3204 $glibc_header_dir/features.h > /dev/null; then
3205 gcc_cv_libc_provides_ssp=yes
3206 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3207 $glibc_header_dir/features.h > /dev/null \
3208 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3209 $glibc_header_dir/features.h > /dev/null; then
3210 gcc_cv_libc_provides_ssp=yes
3213 *) gcc_cv_libc_provides_ssp=no ;;
3215 if test x$gcc_cv_libc_provides_ssp = xyes; then
3216 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3217 [Define if your target C library provides stack protector support])
3220 # Check if TFmode long double should be used by default or not.
3221 # Some glibc targets used DFmode long double, but with glibc 2.4
3222 # and later they can use TFmode.
3224 powerpc*-*-*gnu* | \
3228 AC_ARG_WITH(long-double-128,
3229 [ --with-long-double-128 Use 128-bit long double by default.],
3230 gcc_cv_target_ldbl128="$with_long_double_128",
3231 [gcc_cv_target_ldbl128=no
3232 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3233 if test "x$with_sysroot" = x; then
3234 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3235 elif test "x$with_sysroot" = xyes; then
3236 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3238 glibc_header_dir="${with_sysroot}/usr/include"
3241 glibc_header_dir=/usr/include
3243 grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3244 $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3245 && gcc_cv_target_ldbl128=yes])
3248 if test x$gcc_cv_target_ldbl128 = xyes; then
3249 AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3250 [Define if TFmode long double should be the default])
3253 # Find out what GC implementation we want, or may, use.
3255 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3263 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3266 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3271 echo "Using $GGC for garbage collection."
3273 # Use the system's zlib library.
3275 zlibinc="-I\$(srcdir)/../zlib"
3276 AC_ARG_WITH(system-zlib,
3277 [ --with-system-zlib use installed libz],
3284 dnl Very limited version of automake's enable-maintainer-mode
3286 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3287 dnl maintainer-mode is disabled by default
3288 AC_ARG_ENABLE(maintainer-mode,
3289 [ --enable-maintainer-mode
3290 enable make rules and dependencies not useful
3291 (and sometimes confusing) to the casual installer],
3292 maintainer_mode=$enableval,
3295 AC_MSG_RESULT($maintainer_mode)
3297 if test "$maintainer_mode" = "yes"; then
3308 # Make empty files to contain the specs and options for each language.
3309 # Then add #include lines to for a compiler that has specs and/or options.
3315 # These (without "all_") are set in each config-lang.in.
3316 # `language' must be a single word so is spelled singularly.
3321 all_outputs='Makefile gccbug mklibgcc libada-mk'
3322 # List of language makefile fragments.
3324 # List of language subdirectory makefiles. Deprecated.
3326 # Files for gengtype
3327 all_gtfiles="$target_gtfiles"
3328 # Files for gengtype with language
3329 all_gtfiles_files_langs=
3330 all_gtfiles_files_files=
3332 # These are the languages that are set in --enable-languages,
3333 # and are available in the GCC tree.
3334 all_selected_languages=
3336 # Add the language fragments.
3337 # Languages are added via two mechanisms. Some information must be
3338 # recorded in makefile variables, these are defined in config-lang.in.
3339 # We accumulate them and plug them into the main Makefile.
3340 # The other mechanism is a set of hooks for each of the main targets
3341 # like `clean', `install', etc.
3343 language_hooks="Make-hooks"
3345 for lang in ${srcdir}/*/config-lang.in
3348 # The odd quoting in the next line works around
3349 # an apparent bug in bash 1.12 on linux.
3351 ${srcdir}/[*]/config-lang.in)
3354 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
3355 if test "x$lang_alias" = x
3357 echo "$lang doesn't set \$language." 1>&2
3360 subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3361 subdirs="$subdirs $subdir"
3362 case ",$enable_languages," in
3364 all_selected_languages="$all_selected_languages $lang_alias"
3365 if test -f $srcdir/$subdir/lang-specs.h; then
3366 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3372 if test -f $srcdir/$subdir/lang.opt; then
3373 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3375 if test -f $srcdir/$subdir/$subdir-tree.def; then
3376 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3385 . ${srcdir}/$subdir/config-lang.in
3386 if test "x$language" = x
3388 echo "${srcdir}/$subdir/config-lang.in doesn't set \$language." 1>&2
3391 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$subdir/Make-lang.in"
3392 if test -f ${srcdir}/$subdir/Makefile.in
3393 then all_lang_makefiles="$subdir/Makefile"
3395 all_languages="$all_languages $language"
3396 if test "x$boot_language" = xyes
3398 all_boot_languages="$all_boot_languages $language"
3400 all_compilers="$all_compilers $compilers"
3401 all_stagestuff="$all_stagestuff $stagestuff"
3402 all_outputs="$all_outputs $outputs"
3403 all_gtfiles="$all_gtfiles $gtfiles"
3406 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3407 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3413 # Pick up gtfiles for c
3416 . ${srcdir}/c-config-lang.in
3417 all_gtfiles="$all_gtfiles $gtfiles"
3420 all_gtfiles_files_langs="$all_gtfiles_files_langs ${subdir} "
3421 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3425 for language in $all_selected_languages
3427 check_languages="$check_languages check-$language"
3430 # We link each language in with a set of hooks, reached indirectly via
3431 # lang.${target}. Only do so for selected languages.
3435 target_list="all.cross start.encap rest.encap tags \
3436 install-common install-man install-info dvi html \
3437 uninstall info man srcextra srcman srcinfo \
3438 mostlyclean clean distclean maintainer-clean \
3439 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3441 for t in $target_list
3444 for lang in $all_selected_languages
3448 echo "lang.$t: $x" >> Make-hooks
3457 echo "dir ." > .gdbinit
3458 echo "dir ${srcdir}" >> .gdbinit
3459 if test x$gdb_needs_out_file_path = xyes
3461 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3463 if test "x$subdirs" != x; then
3466 echo "dir ${srcdir}/$s" >> .gdbinit
3469 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3471 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3472 # absolute path for gcc_tooldir based on inserting the number of up-directory
3473 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3474 # $(libsubdir)/@(unlibsubdir) based path.
3475 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3476 # make and thus we'd get different behavior depending on where we built the
3478 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3479 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3481 changequote(<<, >>)dnl
3482 # An explanation of the sed strings:
3483 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3484 # -e 's|/$||' match a trailing forward slash and eliminates it
3485 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3486 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3488 # (*) Note this pattern overwrites the first character of the string
3489 # with a forward slash if one is not already present. This is not a
3490 # problem because the exact names of the sub-directories concerned is
3491 # unimportant, just the number of them matters.
3493 # The practical upshot of these patterns is like this:
3495 # prefix exec_prefix result
3496 # ------ ----------- ------
3498 # /foo/ /foo/bar ../
3499 # /foo /foo/bar/ ../
3500 # /foo/ /foo/bar/ ../
3501 # /foo /foo/bar/ugg ../../
3504 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3505 changequote([, ])dnl
3507 AC_SUBST(gcc_tooldir)
3510 # Find a directory in which to install a shared libgcc.
3512 AC_ARG_ENABLE(version-specific-runtime-libs,
3513 [ --enable-version-specific-runtime-libs
3514 specify that runtime libraries should be
3515 installed in a compiler-specific directory])
3517 AC_ARG_WITH(slibdir,
3518 [ --with-slibdir=DIR shared libraries in DIR [[LIBDIR]]],
3519 slibdir="$with_slibdir",
3520 if test "${enable_version_specific_runtime_libs+set}" = set; then
3521 slibdir='$(libsubdir)'
3522 elif test "$host" != "$target"; then
3523 slibdir='$(build_tooldir)/lib'
3529 objdir=`${PWDCMD-pwd}`
3532 AC_ARG_WITH(datarootdir,
3533 [ --with-datarootdir=DIR Use DIR as the data root [[PREFIX/share]]],
3534 datarootdir="\${prefix}/$with_datarootdir",
3535 datarootdir='$(prefix)/share')
3536 AC_SUBST(datarootdir)
3539 [ --with-docdir=DIR Install documentation in DIR [[DATAROOTDIR]]],
3540 docdir="\${prefix}/$with_docdir",
3541 docdir='$(datarootdir)')
3544 AC_ARG_WITH(htmldir,
3545 [ --with-htmldir=DIR html documentation in in DIR [[DOCDIR]]],
3546 htmldir="\${prefix}/$with_htmldir",
3547 htmldir='$(docdir)')
3550 # Substitute configuration variables
3553 AC_SUBST(all_boot_languages)
3554 AC_SUBST(all_compilers)
3555 AC_SUBST(all_gtfiles)
3556 AC_SUBST(all_gtfiles_files_langs)
3557 AC_SUBST(all_gtfiles_files_files)
3558 AC_SUBST(all_lang_makefrags)
3559 AC_SUBST(all_lang_makefiles)
3560 AC_SUBST(all_languages)
3561 AC_SUBST(all_selected_languages)
3562 AC_SUBST(all_stagestuff)
3563 AC_SUBST(build_exeext)
3564 AC_SUBST(build_install_headers_dir)
3565 AC_SUBST(build_xm_file_list)
3566 AC_SUBST(build_xm_include_list)
3567 AC_SUBST(build_xm_defines)
3568 AC_SUBST(check_languages)
3569 AC_SUBST(cc_set_by_configure)
3570 AC_SUBST(quoted_cc_set_by_configure)
3571 AC_SUBST(cpp_install_dir)
3572 AC_SUBST(xmake_file)
3573 AC_SUBST(tmake_file)
3574 AC_SUBST(extra_gcc_objs)
3575 AC_SUBST(extra_headers_list)
3576 AC_SUBST(extra_objs)
3577 AC_SUBST(extra_parts)
3578 AC_SUBST(extra_passes)
3579 AC_SUBST(extra_programs)
3580 AC_SUBST(float_h_file)
3581 AC_SUBST(gcc_config_arguments)
3582 AC_SUBST(gcc_gxx_include_dir)
3583 AC_SUBST(host_exeext)
3584 AC_SUBST(host_xm_file_list)
3585 AC_SUBST(host_xm_include_list)
3586 AC_SUBST(host_xm_defines)
3587 AC_SUBST(out_host_hook_obj)
3589 AC_SUBST(lang_opt_files)
3590 AC_SUBST(lang_specs_files)
3591 AC_SUBST(lang_tree_files)
3592 AC_SUBST(local_prefix)
3594 AC_SUBST(objc_boehm_gc)
3596 AC_SUBST(out_object_file)
3597 AC_SUBST(stage_prefix_set_by_configure)
3598 AC_SUBST(quoted_stage_prefix_set_by_configure)
3599 AC_SUBST(thread_file)
3600 AC_SUBST(tm_file_list)
3601 AC_SUBST(tm_include_list)
3602 AC_SUBST(tm_defines)
3603 AC_SUBST(tm_p_file_list)
3604 AC_SUBST(tm_p_include_list)
3605 AC_SUBST(xm_file_list)
3606 AC_SUBST(xm_include_list)
3607 AC_SUBST(xm_defines)
3608 AC_SUBST(c_target_objs)
3609 AC_SUBST(cxx_target_objs)
3610 AC_SUBST(target_cpu_default)
3612 AC_SUBST_FILE(language_hooks)
3615 if test x${build} = x${host} ; then
3616 if test x${host} = x${target} ; then
3617 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3619 echo "Links are now set up to build a cross-compiler" 1>&2
3620 echo " from ${host} to ${target}." 1>&2
3623 if test x${host} = x${target} ; then
3624 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3625 echo " for ${target}." 1>&2
3627 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3628 echo " from ${host} to ${target}." 1>&2
3632 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3633 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3635 # Configure the subdirectories
3636 # AC_CONFIG_SUBDIRS($subdirs)
3638 # Create the Makefile
3639 # and configure language subdirectories
3640 AC_CONFIG_FILES($all_outputs)
3642 AC_CONFIG_COMMANDS([default],
3644 case ${CONFIG_HEADERS} in
3645 *auto-host.h:config.in*)
3648 # Make sure all the subdirs exist.
3649 for d in $subdirs doc build
3651 test -d $d || mkdir $d
3653 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3654 # bootstrapping and the installation procedure can still use
3655 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3656 # FLAGS_TO_PASS has been modified to solve the problem there.
3657 # This is virtually a duplicate of what happens in configure.lang; we do
3658 # an extra check to make sure this only happens if ln -s can be used.
3661 for d in ${subdirs} ; do
3662 STARTDIR=`${PWDCMD-pwd}`
3664 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3667 $LN_S ../$t $t 2>/dev/null
3674 [subdirs='$subdirs'])