2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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, 59 Temple Place - Suite 330, 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 #Set to 1 on a release branch
36 # Determine the host, build, and target systems
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Determine the target- and build-specific subdirectories
47 # Set program_transform_name
50 # Check for bogus environment variables.
51 # Test if LIBRARY_PATH contains the notation for the current directory
52 # since this would lead to problems installing/building glibc.
53 # LIBRARY_PATH contains the current directory if one of the following
55 # - one of the terminals (":" and ";") is the first or last sign
56 # - two terminals occur directly after each other
57 # - the path contains an element with a dot in it
58 AC_MSG_CHECKING(LIBRARY_PATH variable)
60 case ${LIBRARY_PATH} in
61 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
62 library_path_setting="contains current directory"
65 library_path_setting="ok"
69 AC_MSG_RESULT($library_path_setting)
70 if test "$library_path_setting" != "ok"; then
72 *** LIBRARY_PATH shouldn't contain the current directory when
73 *** building gcc. Please change the environment variable
74 *** and run configure again.])
77 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
78 # since this would lead to problems installing/building glibc.
79 # GCC_EXEC_PREFIX contains the current directory if one of the following
81 # - one of the terminals (":" and ";") is the first or last sign
82 # - two terminals occur directly after each other
83 # - the path contains an element with a dot in it
84 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
86 case ${GCC_EXEC_PREFIX} in
87 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
88 gcc_exec_prefix_setting="contains current directory"
91 gcc_exec_prefix_setting="ok"
95 AC_MSG_RESULT($gcc_exec_prefix_setting)
96 if test "$gcc_exec_prefix_setting" != "ok"; then
98 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
99 *** building gcc. Please change the environment variable
100 *** and run configure again.])
107 # Specify the local prefix
109 AC_ARG_WITH(local-prefix,
110 [ --with-local-prefix=DIR specifies directory to put local include],
111 [case "${withval}" in
112 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
114 *) local_prefix=$with_local_prefix ;;
117 # Default local prefix if it is empty
118 if test x$local_prefix = x; then
119 local_prefix=/usr/local
122 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
123 # passed in by the toplevel make and thus we'd get different behavior
124 # depending on where we built the sources.
126 # Specify the g++ header file directory
127 AC_ARG_WITH(gxx-include-dir,
128 [ --with-gxx-include-dir=DIR
129 specifies directory to put g++ header files],
130 [case "${withval}" in
131 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
133 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
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='${libsubdir}/include/c++'
140 topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
141 changequote(<<, >>)dnl
142 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 AC_MSG_CHECKING([whether a default linker was specified])
207 if test x"${DEFAULT_LINKER+set}" = x"set"; then
208 if test x"$gnu_ld_flag" = x"no"; then
209 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
211 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
217 # With demangler in GNU ld
218 AC_ARG_WITH(demangler-in-ld,
219 [ --with-demangler-in-ld try to use demangler in GNU ld.],
220 demangler_in_ld="$with_demangler_in_ld",
223 # ----------------------
224 # Find default assembler
225 # ----------------------
229 [ --with-gnu-as arrange to work with GNU as],
230 gas_flag="$with_gnu_as",
234 [ --with-as arrange to use the specified as (full pathname)],
235 DEFAULT_ASSEMBLER="$with_as")
236 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
237 if test ! -x "$DEFAULT_ASSEMBLER"; then
238 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
239 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
242 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
243 [Define to enable the use of a default assembler.])
246 AC_MSG_CHECKING([whether a default assembler was specified])
247 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
248 if test x"$gas_flag" = x"no"; then
249 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
251 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
261 # If a non-executable a.out is present (e.g. created by GNU as above even if
262 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
263 # file, even when creating an executable, so an execution test fails.
264 # Remove possible default executable files to avoid this.
266 # FIXME: This really belongs into AC_PROG_CC and can be removed once
267 # Autoconf includes it.
268 rm -f a.out a.exe b.out
270 # Find the native compiler
273 # autoconf is lame and doesn't give us any substitution variable for this.
274 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
275 NO_MINUS_C_MINUS_O=yes
277 OUTPUT_OPTION='-o $@'
279 AC_SUBST(NO_MINUS_C_MINUS_O)
280 AC_SUBST(OUTPUT_OPTION)
282 # -------------------------
283 # Check C compiler features
284 # -------------------------
291 # sizeof(char) is 1 by definition.
292 AC_COMPILE_CHECK_SIZEOF(void *)
293 AC_COMPILE_CHECK_SIZEOF(short)
294 AC_COMPILE_CHECK_SIZEOF(int)
295 AC_COMPILE_CHECK_SIZEOF(long)
296 if test $ac_cv_c_long_long = yes; then
297 AC_COMPILE_CHECK_SIZEOF(long long)
299 if test $ac_cv_c___int64 = yes; then
300 AC_COMPILE_CHECK_SIZEOF(__int64)
303 # ---------------------
304 # Warnings and checking
305 # ---------------------
307 # Check $CC warning features (if it's GCC).
308 # We want to use -pedantic, but we don't want warnings about
311 # So, we only use -pedantic if we can disable those warnings.
314 [whether ${CC} accepts -Wno-long-long],
315 [ac_cv_prog_cc_w_no_long_long],
316 [save_CFLAGS="$CFLAGS"
317 CFLAGS="-Wno-long-long"
318 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
319 [ac_cv_prog_cc_w_no_long_long=yes],
320 [ac_cv_prog_cc_w_no_long_long=no])
321 CFLAGS="$save_CFLAGS"
325 [whether ${CC} accepts -Wno-variadic-macros],
326 [ac_cv_prog_cc_w_no_variadic_macros],
327 [save_CFLAGS="$CFLAGS"
328 CFLAGS="-Wno-variadic-macros"
329 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
330 [ac_cv_prog_cc_w_no_variadic_macros=yes],
331 [ac_cv_prog_cc_w_no_variadic_macros=no])
332 CFLAGS="$save_CFLAGS"
336 if test $ac_cv_prog_cc_w_no_long_long = yes \
337 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
338 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
340 AC_SUBST(strict1_warn)
342 # Add -Wold-style-definition if it's accepted
344 [whether ${CC} accepts -Wold-style-definition],
345 [ac_cv_prog_cc_w_old_style_definition],
346 [save_CFLAGS="$CFLAGS"
347 CFLAGS="-Wold-style-definition"
348 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
349 [ac_cv_prog_cc_w_old_style_definition=yes],
350 [ac_cv_prog_cc_w_old_style_definition=no])
351 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
354 strict1_warn="${strict1_warn} -Wold-style-definition"
357 # Enable -Werror, period.
358 AC_ARG_ENABLE(werror_always,
359 [ --enable-werror-always enable -Werror always], [],
360 [enable_werror_always=no])
361 if test x${enable_werror_always} = xyes ; then
362 strict1_warn="${strict1_warn} -Werror"
366 # If the native compiler is GCC, we can enable warnings even in stage1.
367 # That's useful for people building cross-compilers, or just running a
370 if test "x$GCC" = "xyes"; then
371 warn_cflags='$(GCC_WARN_CFLAGS)'
373 AC_SUBST(warn_cflags)
375 # Enable -Werror in bootstrap stage2 and later.
376 AC_ARG_ENABLE(werror,
377 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
378 [if test x$is_release = x ; then
379 # Default to "yes" on development branches.
382 # Default to "no" on release branches.
385 if test x$enable_werror = xyes ; then
390 # Enable expensive internal checks
391 AC_ARG_ENABLE(checking,
392 [ --enable-checking[=LIST]
393 enable expensive run-time checks. With LIST,
394 enable only specific categories of checks.
395 Categories are: none,assert,fold,gc,gcac,misc,
396 rtlflag,rtl,tree,valgrind;
397 default is assert,gc,misc,rtlflag,tree],
403 ac_gc_always_collect=
406 case "${enableval}" in
407 yes) ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;
408 ac_rtlflag_checking=1 ; ac_assert_checking=1 ;;
410 *) IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
411 set fnord $enableval; shift
417 assert) ac_assert_checking=1 ;;
418 fold) ac_fold_checking=1 ;;
419 gc) ac_gc_checking=1 ;;
420 gcac) ac_gc_always_collect=1 ;;
421 misc) ac_checking=1 ;;
422 rtlflag) ac_rtlflag_checking=1 ;;
423 rtl) ac_rtl_checking=1 ;;
424 tree) ac_tree_checking=1 ;;
425 valgrind) ac_checking_valgrind=1 ;;
426 *) AC_MSG_ERROR(unknown check category $check) ;;
432 # Determine the default checks.
433 if test x$is_release = x ; then
434 # Enable some checks for development versions of GCC
435 ac_assert_checking=1;
436 ac_checking=1; ac_tree_checking=1; ac_gc_checking=1; ac_rtlflag_checking=1;
438 # Disable all but assertions for release versions of GCC.
439 ac_assert_checking=1;
442 if test x$ac_checking != x ; then
443 AC_DEFINE(ENABLE_CHECKING, 1,
444 [Define if you want more run-time sanity checks. This one gets a grab
445 bag of miscellaneous but relatively cheap checks.])
446 nocommon_flag=-fno-common
448 AC_SUBST(nocommon_flag)
449 if test x$ac_assert_checking != x ; then
450 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
451 [Define if you want assertions enabled. This is a cheap check.])
453 if test x$ac_tree_checking != x ; then
454 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
455 [Define if you want all operations on trees (the basic data
456 structure of the front ends) to be checked for dynamic type safety
457 at runtime. This is moderately expensive. The tree browser debugging
458 routines will also be enabled by this option.
460 TREEBROWSER=tree-browser.o
462 AC_SUBST(TREEBROWSER)
463 if test x$ac_rtl_checking != x ; then
464 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
465 [Define if you want all operations on RTL (the basic data structure
466 of the optimizer and back end) to be checked for dynamic type safety
467 at runtime. This is quite expensive.])
469 if test x$ac_rtlflag_checking != x ; then
470 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
471 [Define if you want RTL flag accesses to be checked against the RTL
472 codes that are supported for each access macro. This is relatively
475 if test x$ac_gc_checking != x ; then
476 AC_DEFINE(ENABLE_GC_CHECKING, 1,
477 [Define if you want the garbage collector to do object poisoning and
478 other memory allocation checks. This is quite expensive.])
480 if test x$ac_gc_always_collect != x ; then
481 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
482 [Define if you want the garbage collector to operate in maximally
483 paranoid mode, validating the entire heap and collecting garbage at
484 every opportunity. This is extremely expensive.])
486 if test x$ac_fold_checking != x ; then
487 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
488 [Define if you want fold checked that it never destructs its argument.
489 This is quite expensive.])
491 valgrind_path_defines=
494 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
495 dnl # an if statement. This was the source of very frustrating bugs
496 dnl # in converting to autoconf 2.5x!
497 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
499 if test x$ac_checking_valgrind != x ; then
500 # It is certainly possible that there's valgrind but no valgrind.h.
501 # GCC relies on making annotations so we must have both.
502 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
504 [#include <valgrind/memcheck.h>
505 #ifndef VALGRIND_DISCARD
506 #error VALGRIND_DISCARD not defined
508 [gcc_cv_header_valgrind_memcheck_h=yes],
509 [gcc_cv_header_valgrind_memcheck_h=no])
510 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
511 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
513 [#include <memcheck.h>
514 #ifndef VALGRIND_DISCARD
515 #error VALGRIND_DISCARD not defined
517 [gcc_cv_header_memcheck_h=yes],
518 gcc_cv_header_memcheck_h=no)
519 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
520 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
521 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
522 if test "x$valgrind_path" = "x" \
523 || (test $have_valgrind_h = no \
524 && test $gcc_cv_header_memcheck_h = no \
525 && test $gcc_cv_header_valgrind_memcheck_h = no); then
526 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
528 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
529 valgrind_command="$valgrind_path -q"
530 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
531 [Define if you want to run subprograms and generated programs
532 through valgrind (a memory checker). This is extremely expensive.])
533 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
534 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
535 [Define if valgrind's valgrind/memcheck.h header is installed.])
537 if test $gcc_cv_header_memcheck_h = yes; then
538 AC_DEFINE(HAVE_MEMCHECK_H, 1,
539 [Define if valgrind's memcheck.h header is installed.])
542 AC_SUBST(valgrind_path_defines)
543 AC_SUBST(valgrind_command)
545 AC_ARG_ENABLE(mapped-location,
546 [ --enable-mapped-location location_t is fileline integer cookie],,
547 enable_mapped_location=no)
549 if test "$enable_mapped_location" = yes ; then
550 AC_DEFINE(USE_MAPPED_LOCATION, 1,
551 [Define if location_t is fileline integer cookie.])
554 # Enable code coverage collection
555 AC_ARG_ENABLE(coverage,
556 [ --enable-coverage[=LEVEL]
557 enable compiler's code coverage collection.
558 Use to measure compiler performance and locate
559 unused parts of the compiler. With LEVEL, specify
560 optimization. Values are opt, noopt,
562 [case "${enableval}" in
564 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
567 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
570 # a.k.a. --disable-coverage
574 AC_MSG_ERROR(unknown coverage setting $enableval)
578 AC_SUBST(coverage_flags)
580 AC_ARG_ENABLE(gather-detailed-mem-stats,
581 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
582 [enable_gather_detailed_mem_stats=no])
583 if test x$enable_gather_detailed_mem_stats = xyes ; then
584 AC_DEFINE(GATHER_STATISTICS, 1,
585 [Define to enable detailed memory allocation stats gathering.])
588 # -------------------------------
589 # Miscenalleous configure options
590 # -------------------------------
594 [ --with-stabs arrange to use stabs instead of host debug format],
598 # Determine whether or not multilibs are enabled.
599 AC_ARG_ENABLE(multilib,
600 [ --enable-multilib enable library support for multiple ABIs],
601 [], [enable_multilib=yes])
602 AC_SUBST(enable_multilib)
604 # Enable __cxa_atexit for C++.
605 AC_ARG_ENABLE(__cxa_atexit,
606 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
610 # Pass with no value to take the default
611 # Pass with a value to specify a thread package
612 AC_ARG_ENABLE(threads,
613 [ --enable-threads enable thread usage for target GCC
614 --enable-threads=LIB use LIB thread package for target GCC],,
617 AC_ARG_ENABLE(objc-gc,
618 [ --enable-objc-gc enable the use of Boehm's garbage collector with
619 the GNU Objective-C runtime],
620 if test x$enable_objc_gc = xno; then
628 [ --with-dwarf2 force the default debug format to be DWARF 2],
629 dwarf2="$with_dwarf2",
632 AC_ARG_ENABLE(shared,
633 [ --disable-shared don't provide a shared libgcc],
635 case $enable_shared in
639 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
640 for pkg in $enableval; do
641 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
648 ], [enable_shared=yes])
649 AC_SUBST(enable_shared)
652 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
654 case ${with_sysroot} in
655 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
656 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
659 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
660 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
662 if test "x$exec_prefix" = xNONE; then
663 if test "x$prefix" = xNONE; then
664 test_prefix=/usr/local
669 test_prefix=$exec_prefix
671 case ${TARGET_SYSTEM_ROOT} in
672 "${test_prefix}"|"${test_prefix}/"*|\
673 '${exec_prefix}'|'${exec_prefix}/'*)
674 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
675 TARGET_SYSTEM_ROOT_DEFINE="$t"
680 TARGET_SYSTEM_ROOT_DEFINE=
681 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
683 AC_SUBST(TARGET_SYSTEM_ROOT)
684 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
685 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
687 # Build with intermodule optimisations
688 AC_ARG_ENABLE(intermodule,
689 [ --enable-intermodule build the compiler in one step],
690 [case ${enable_intermodule} in
691 yes) onestep="-onestep";;
697 # Sanity check enable_languages in case someone does not run the toplevel
698 # configure # script.
699 AC_ARG_ENABLE(languages,
700 [ --enable-languages=LIST specify which front-ends to build],
701 [case ,${enable_languages}, in
703 # go safe -- we cannot be much sure without the toplevel
705 # analysis of which target libs are present and usable
709 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
714 enable_languages=c,${enable_languages}
717 [enable_languages=c])
720 for lang in ${srcdir}/*/config-lang.in
723 # The odd quoting in the next line works around
724 # an apparent bug in bash 1.12 on linux.
726 ${srcdir}/[*]/config-lang.in) ;;
728 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
729 if test "x$lang_alias" = x
731 echo "$lang doesn't set \$language." 1>&2
734 case ",$enable_languages," in
736 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
744 # -------------------------
745 # Checks for other programs
746 # -------------------------
750 # Find some useful tools
752 # We need awk to create options.c and options.h.
753 # Bail out if it's missing.
755 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
763 # By default, the Darwin ranlib will not treat common symbols as
764 # definitions when building the archive table of contents. Other
765 # ranlibs do that; pass an option to the Darwin ranlib that makes
766 # it behave similarly.
772 AC_SUBST(ranlib_flags)
776 # See if cmp has --ignore-initial.
777 gcc_AC_PROG_CMP_IGNORE_INITIAL
779 # See if we have the mktemp command.
780 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
782 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
784 # See if makeinfo has been installed and is modern enough
785 # that we can use it.
786 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
787 [GNU texinfo.* \([0-9][0-9.]*\)],
789 if test $gcc_cv_prog_makeinfo_modern = no; then
790 MAKEINFO="$MISSING makeinfo"
792 *** Makeinfo is missing or too old.
793 *** Info documentation will not be built.])
800 # Is pod2man recent enough to regenerate manpages?
801 AC_MSG_CHECKING([for recent Pod::Man])
802 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
804 GENERATED_MANPAGES=generated-manpages
809 AC_SUBST(GENERATED_MANPAGES)
812 dnl Don't use AC_PROG_LEX; we insist on flex.
813 dnl LEXLIB is not useful in gcc.
814 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
817 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
819 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
820 # check for build == host before using them.
823 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
824 && test -d ../binutils ; then
825 NM='$(objdir)/../binutils/nm-new'
827 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
831 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
832 && test -d ../binutils ; then
833 AR='$(objdir)/../binutils/ar'
835 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
839 # --------------------
840 # Checks for C headers
841 # --------------------
843 AC_MSG_CHECKING(for GNU C library)
844 AC_CACHE_VAL(gcc_cv_glibc,
846 [#include <features.h>],[
847 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
848 #error Not a GNU C library system
852 AC_MSG_RESULT($gcc_cv_glibc)
853 if test $gcc_cv_glibc = yes; then
854 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
857 # Need to reject headers which give warnings, so that the -Werror bootstrap
858 # works later. *sigh* This needs to come before all header checks.
865 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
866 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
867 sys/resource.h sys/param.h sys/times.h sys/stat.h \
868 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
870 # Check for thread headers.
871 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
872 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
874 # These tests can't be done till we know if we have limits.h.
882 # Stage specific cflags for build.
888 stage1_cflags="-Wa,-J"
894 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
895 # sources; use -no-cpp-precomp to get to GNU cpp.
896 # Apple's GCC has bugs in designated initializer handling, so disable
898 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
901 AC_SUBST(stage1_cflags)
903 # These libraries may be used by collect2.
904 # We may need a special search path to get them linked.
905 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
907 for libs in '' -lld -lmld \
908 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
909 '-L/usr/lib/cmplrs/cc3.11 -lmld'
912 AC_TRY_LINK_FUNC(ldopen,
913 [gcc_cv_collect2_libs="$libs"; break])
916 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
917 case $gcc_cv_collect2_libs in
919 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
921 AC_SUBST(COLLECT2_LIBS)
923 # When building Ada code on Alpha, we need exc_resume which is usually in
924 # -lexc. So test for it.
927 AC_SEARCH_LIBS(exc_resume, exc)
930 AC_SUBST(GNAT_LIBEXC)
932 # Some systems put ldexp and frexp in libm instead of libc; assume
933 # they're both in the same place. jcf-dump needs them.
936 AC_SEARCH_LIBS(ldexp, m)
941 # Use <inttypes.h> only if it exists,
942 # doesn't clash with <sys/types.h>, and declares intmax_t.
943 AC_MSG_CHECKING(for inttypes.h)
944 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
946 [#include <sys/types.h>
947 #include <inttypes.h>],
949 [gcc_cv_header_inttypes_h=yes],
950 gcc_cv_header_inttypes_h=no)])
951 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
952 if test $gcc_cv_header_inttypes_h = yes; then
953 AC_DEFINE(HAVE_INTTYPES_H, 1,
954 [Define if you have a working <inttypes.h> header file.])
957 dnl Disabled until we have a complete test for buggy enum bitfields.
958 dnl gcc_AC_C_ENUM_BF_UNSIGNED
960 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
961 sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
962 fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
963 scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
966 if test x$ac_cv_func_mbstowcs = xyes; then
967 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
968 [ AC_TRY_RUN([#include <stdlib.h>
974 gcc_cv_func_mbstowcs_works=yes,
975 gcc_cv_func_mbstowcs_works=no,
976 gcc_cv_func_mbstowcs_works=yes)])
977 if test x$gcc_cv_func_mbstowcs_works = xyes; then
978 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
979 [Define this macro if mbstowcs does not crash when its
980 first argument is NULL.])
984 AC_CHECK_TYPE(ssize_t, int)
986 # Try to determine the array type of the second argument of getgroups
987 # for the target system (int or gid_t).
989 if test "${target}" = "${build}"; then
990 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
993 # This condition may need some tweaking. It should include all
994 # targets where the array type of the second argument of getgroups
995 # is int and the type of gid_t is not equivalent to int.
996 *-*-sunos* | *-*-ultrix*)
997 TARGET_GETGROUPS_T=int
1000 TARGET_GETGROUPS_T=gid_t
1004 AC_SUBST(TARGET_GETGROUPS_T)
1006 gcc_AC_FUNC_PRINTF_PTR
1007 gcc_AC_FUNC_MMAP_BLACKLIST
1011 # Under VMS, vfork works very differently than on Unix. The standard test
1012 # won't work, and it isn't easily adaptable. It makes more sense to
1014 ac_cv_func_vfork_works=yes
1020 # Until we have in-tree GNU iconv:
1022 AC_SUBST(LIBICONV_DEP)
1026 # We will need to find libiberty.h and ansidecl.h
1027 saved_CFLAGS="$CFLAGS"
1028 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1029 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
1030 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
1031 fprintf_unlocked strstr errno snprintf vasprintf \
1032 malloc realloc calloc free basename getopt clock getpagesize, , ,[
1033 #include "ansidecl.h"
1034 #include "system.h"])
1036 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1037 #include "ansidecl.h"
1039 #ifdef HAVE_SYS_RESOURCE_H
1040 #include <sys/resource.h>
1045 #include "ansidecl.h"
1047 #ifdef HAVE_SYS_RESOURCE_H
1048 #include <sys/resource.h>
1050 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
1051 [Define to \`long' if <sys/resource.h> doesn't define.])])
1053 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1054 #include "ansidecl.h"
1061 gcc_AC_CHECK_DECLS(times, , ,[
1062 #include "ansidecl.h"
1064 #ifdef HAVE_SYS_TIMES_H
1065 #include <sys/times.h>
1069 # More time-related stuff.
1070 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1072 #include "ansidecl.h"
1074 #ifdef HAVE_SYS_TIMES_H
1075 #include <sys/times.h>
1077 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1078 if test $ac_cv_struct_tms = yes; then
1079 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1080 [Define if <sys/times.h> defines struct tms.])
1083 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1084 # revisit after autoconf 2.50.
1085 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1087 #include "ansidecl.h"
1089 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1090 if test $gcc_cv_type_clock_t = yes; then
1091 AC_DEFINE(HAVE_CLOCK_T, 1,
1092 [Define if <time.h> defines clock_t.])
1095 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1096 CFLAGS="$saved_CFLAGS"
1098 gcc_AC_INITFINI_ARRAY
1100 # mkdir takes a single argument on some systems.
1101 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1109 # With Setjmp/Longjmp based exception handling.
1110 AC_ARG_ENABLE(sjlj-exceptions,
1111 [ --enable-sjlj-exceptions
1112 arrange to use setjmp/longjmp exception handling],
1113 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1114 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1115 [Define 0/1 to force the choice for exception handling model.])])
1117 if test x$host = x$target; then
1118 AC_CHECK_LIB(unwind, main, use_libunwind_default=yes, use_libunwind_default=no)
1120 use_libunwind_default=no
1122 # Use libunwind based exception handling.
1123 AC_ARG_ENABLE(libunwind-exceptions,
1124 [ --enable-libunwind-exceptions force use libunwind for exceptions],
1125 use_libunwind_exceptions=$enableval,
1126 use_libunwind_exceptions=$use_libunwind_default)
1127 if test x"$use_libunwind_exceptions" = xyes; then
1128 AC_DEFINE(USE_LIBUNWIND_EXCEPTIONS, 1,
1129 [Define if gcc should use -lunwind.])
1132 # --------------------------------------------------------
1133 # Build, host, and target specific configuration fragments
1134 # --------------------------------------------------------
1136 # Collect build-machine-specific information.
1137 . ${srcdir}/config.build
1139 # Collect host-machine-specific information.
1140 . ${srcdir}/config.host
1144 # Collect target-machine-specific information.
1145 . ${srcdir}/config.gcc
1147 extra_objs="${host_extra_objs} ${extra_objs}"
1148 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1150 # Default the target-machine variables that were not explicitly set.
1151 if test x"$tm_file" = x
1152 then tm_file=$cpu_type/$cpu_type.h; fi
1154 if test x"$extra_headers" = x
1155 then extra_headers=; fi
1157 if test x$md_file = x
1158 then md_file=$cpu_type/$cpu_type.md; fi
1160 if test x$out_file = x
1161 then out_file=$cpu_type/$cpu_type.c; fi
1163 if test x"$tmake_file" = x
1164 then tmake_file=$cpu_type/t-$cpu_type
1167 if test x"$dwarf2" = xyes
1168 then tm_file="$tm_file tm-dwarf2.h"
1171 # Say what files are being used for the output code and MD file.
1172 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1173 echo "Using \`$srcdir/config/$md_file' as machine description file."
1175 # If any of the xm_file variables contain nonexistent files, warn
1176 # about them and drop them.
1179 for x in $build_xm_file; do
1180 if test -f $srcdir/config/$x
1182 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1188 for x in $host_xm_file; do
1189 if test -f $srcdir/config/$x
1191 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1197 for x in $xm_file; do
1198 if test -f $srcdir/config/$x
1200 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1206 for f in $tm_file; do
1209 if test $count = ax; then
1210 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1212 echo "Using the following target machine macro files:"
1213 for f in $tm_file; do
1214 echo " $srcdir/config/$f"
1218 if test x$need_64bit_hwint = xyes; then
1219 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1220 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1224 for f in $host_xm_file; do
1227 if test $count = a; then
1229 elif test $count = ax; then
1230 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1232 echo "Using the following host machine macro files:"
1233 for f in $host_xm_file; do
1234 echo " $srcdir/config/$f"
1237 echo "Using ${out_host_hook_obj} for host machine hooks."
1239 if test "$host_xm_file" != "$build_xm_file"; then
1241 for f in $build_xm_file; do
1244 if test $count = a; then
1246 elif test $count = ax; then
1247 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1249 echo "Using the following build machine macro files:"
1250 for f in $build_xm_file; do
1251 echo " $srcdir/config/$f"
1260 # Check if a valid thread package
1261 case ${enable_threads} in
1264 target_thread_file='single'
1268 target_thread_file='single'
1270 aix | dce | gnat | irix | posix | rtems | \
1271 single | solaris | vxworks | win32 )
1272 target_thread_file=${enable_threads}
1275 echo "${enable_threads} is an unknown thread package" 1>&2
1280 if test x${thread_file} = x; then
1281 # No thread file set by target-specific clauses in config.gcc,
1282 # so use file chosen by default logic above
1283 thread_file=${target_thread_file}
1286 # Make gthr-default.h if we have a thread file.
1288 if test $thread_file != single; then
1289 rm -f gthr-default.h
1290 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1291 gthread_flags=-DHAVE_GTHR_DEFAULT
1293 AC_SUBST(gthread_flags)
1299 if test x$enable___cxa_atexit = xyes || \
1300 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1301 AC_CHECK_FUNC(__cxa_atexit,
1302 [AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1303 [Define if you want to use __cxa_atexit, rather than atexit, to
1304 register C++ destructors for local statics and global objects.
1305 This is essential for fully standards-compliant handling of
1306 destructors, but requires __cxa_atexit in libc.])],
1307 echo "__cxa_atexit can't be enabled on this target")
1310 # Look for a file containing extra machine modes.
1311 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1312 extra_modes_file='$(srcdir)'/config/${extra_modes}
1313 AC_SUBST(extra_modes_file)
1314 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1315 [Define to the name of a file containing a list of extra machine modes
1316 for this architecture.])
1319 # auto-host.h is the file containing items generated by autoconf and is
1320 # the first file included by config.h.
1321 # If host=build, it is correct to have bconfig include auto-host.h
1322 # as well. If host!=build, we are in error and need to do more
1323 # work to find out the build config parameters.
1324 if test x$host = x$build
1326 build_auto=auto-host.h
1329 # We create a subdir, then run autoconf in the subdir.
1330 # To prevent recursion we set host and build for the new
1331 # invocation of configure to the build for this invocation
1338 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1339 *) realsrcdir=../${srcdir};;
1341 saved_CFLAGS="${CFLAGS}"
1342 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1343 ${realsrcdir}/configure \
1344 --enable-languages=${enable_languages-all} \
1345 --target=$target_alias --host=$build_alias --build=$build_alias
1346 CFLAGS="${saved_CFLAGS}"
1348 # We just finished tests for the build machine, so rename
1349 # the file auto-build.h in the gcc directory.
1350 mv auto-host.h ../auto-build.h
1353 build_auto=auto-build.h
1354 FORBUILD=../${build_subdir}
1358 tm_file="${tm_file} defaults.h"
1359 tm_p_file="${tm_p_file} tm-preds.h"
1360 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1361 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1362 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1363 # put this back in temporarily.
1364 xm_file="ansidecl.h ${xm_file}"
1370 # Get the version trigger filename from the toplevel
1371 if test "${with_gcc_version_trigger+set}" = set; then
1372 gcc_version_trigger=$with_gcc_version_trigger
1374 gcc_version_trigger=${srcdir}/version.c
1377 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
1378 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1380 # Compile in configure arguments.
1381 if test -f configargs.h ; then
1382 # Being re-configured.
1383 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1384 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1386 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1389 # Double all backslashes and backslash all quotes to turn
1390 # gcc_config_arguments into a C string.
1391 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1392 $gcc_config_arguments
1394 gcc_config_arguments_str=`cat conftest.out`
1397 cat > configargs.h <<EOF
1398 /* Generated automatically. */
1399 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1400 static const char thread_model[] = "$thread_file";
1402 static const struct {
1403 const char *name, *value;
1404 } configure_default_options[] = $configure_default_options;
1408 # Internationalization
1410 VERSION="$gcc_version"
1411 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
1412 [The name of this program for internationalization purposes.])
1416 ZW_GNU_GETTEXT_SISTER_DIR
1418 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1419 # -liconv on the link line twice.
1420 case "$LIBINTL" in *$LIBICONV*)
1424 # Windows32 Registry support for specifying GCC installation paths.
1425 AC_ARG_ENABLE(win32-registry,
1426 [ --disable-win32-registry
1427 disable lookup of installation paths in the
1428 Registry on Windows hosts
1429 --enable-win32-registry enable registry lookup (default)
1430 --enable-win32-registry=KEY
1431 use KEY instead of GCC version as the last portion
1432 of the registry key],,)
1434 win32 | pe | cygwin* | mingw32* | uwin*)
1435 AC_MSG_CHECKING(whether windows registry support is requested)
1436 if test "x$enable_win32_registry" != xno; then
1437 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1438 [Define to 1 if installation paths should be looked up in Windows32
1439 Registry. Ignored on non windows32 hosts.])
1441 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1446 # Check if user specified a different registry key.
1447 case "x${enable_win32_registry}" in
1450 gcc_cv_win32_registry_key="$VERSION"
1453 # no registry lookup.
1454 gcc_cv_win32_registry_key=''
1457 # user-specified key.
1458 gcc_cv_win32_registry_key="$enable_win32_registry"
1462 if test "x$enable_win32_registry" != xno; then
1463 AC_MSG_CHECKING(registry key on windows hosts)
1464 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1465 [Define to be the last portion of registry key on windows hosts.])
1466 AC_MSG_RESULT($gcc_cv_win32_registry_key)
1471 # Get an absolute path to the GCC top-level source directory
1472 holddir=`${PWDCMD-pwd}`
1474 topdir=`${PWDCMD-pwd}`
1477 # Conditionalize the makefile for this host machine.
1479 for f in ${host_xmake_file}
1481 if test -f ${srcdir}/config/$f
1483 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1487 # Conditionalize the makefile for this target machine.
1489 for f in ${tmake_file}
1491 if test -f ${srcdir}/config/$f
1493 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1496 tmake_file="${tmake_file_}"
1498 symbolic_link='ln -s'
1500 # If the host doesn't support symlinks, modify CC in
1501 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1502 # Otherwise, we can use "CC=$(CC)".
1504 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
1506 cc_set_by_configure="\$(CC)"
1507 quoted_cc_set_by_configure="\$(CC)"
1508 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1509 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1512 if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
1514 symbolic_link="cp -p"
1518 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1519 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1520 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1521 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1525 out_object_file=`basename $out_file .c`.o
1529 for f in $tm_file; do
1532 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1533 tm_include_list="${tm_include_list} $f"
1536 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1537 tm_include_list="${tm_include_list} config/$f"
1544 for f in $tm_p_file; do
1547 tm_p_file_list="${tm_p_file_list} $f"
1548 tm_p_include_list="${tm_p_include_list} $f"
1551 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1552 tm_p_include_list="${tm_p_include_list} config/$f"
1558 for f in $xm_file; do
1561 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1562 xm_include_list="${xm_include_list} $f"
1565 xm_file_list="${xm_file_list} $f"
1566 xm_include_list="${xm_include_list} $f"
1569 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1570 xm_include_list="${xm_include_list} config/$f"
1576 host_xm_include_list=
1577 for f in $host_xm_file; do
1580 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1581 host_xm_include_list="${host_xm_include_list} $f"
1584 host_xm_file_list="${host_xm_file_list} $f"
1585 host_xm_include_list="${host_xm_include_list} $f"
1588 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1589 host_xm_include_list="${host_xm_include_list} config/$f"
1595 for f in $build_xm_file; do
1598 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1599 build_xm_include_list="${build_xm_include_list} $f"
1601 auto-build.h | auto-host.h )
1602 build_xm_file_list="${build_xm_file_list} $f"
1603 build_xm_include_list="${build_xm_include_list} $f"
1606 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1607 build_xm_include_list="${build_xm_include_list} config/$f"
1612 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1613 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1614 CROSS= AC_SUBST(CROSS)
1615 ALL=all.internal AC_SUBST(ALL)
1616 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1617 if test x$host != x$target
1619 CROSS="-DCROSS_COMPILE"
1621 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1622 case "$host","$target" in
1623 # Darwin crosses can use the host system's libraries and headers,
1624 # because of the fat library support. Of course, it must be the
1625 # same version of Darwin on both sides. Allow the user to
1626 # just say --target=foo-darwin without a version number to mean
1627 # "the version on this system".
1628 *-*-darwin*,*-*-darwin*)
1629 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1630 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1631 if test $hostos = $targetos -o $targetos = darwin ; then
1633 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1638 i?86-*-*,x86_64-*-* \
1639 | powerpc*-*-*,powerpc64*-*-*)
1640 CROSS="$CROSS -DNATIVE_CROSS" ;;
1642 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1643 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1644 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1647 # If this is a cross-compiler that does not
1648 # have its own set of headers then define
1651 # If this is using newlib, without having the headers available now,
1652 # then define inhibit_libc in LIBGCC2_CFLAGS.
1653 # This prevents libgcc2 from containing any code which requires libc
1656 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1657 test x$with_newlib = xyes ; } &&
1658 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1659 inhibit_libc=-Dinhibit_libc
1661 AC_SUBST(inhibit_libc)
1663 # When building gcc with a cross-compiler, we need to adjust things so
1664 # that the generator programs are still built with the native compiler.
1665 # Also, we cannot run fixincludes or fix-header.
1667 # These are the normal (build=host) settings:
1668 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1669 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1670 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1672 # Possibly disable fixproto, on a per-target basis.
1673 case ${use_fixproto} in
1678 STMP_FIXPROTO=stmp-fixproto
1681 AC_SUBST(STMP_FIXPROTO)
1683 # And these apply if build != host, or we are generating coverage data
1684 if test x$build != x$host || test "x$coverage_flags" != x
1686 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1688 if test "x$TARGET_SYSTEM_ROOT" = x; then
1694 # Expand extra_headers to include complete path.
1695 # This substitutes for lots of t-* files.
1697 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1698 for file in ${extra_headers} ; do
1699 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1702 # Define collect2 in Makefile.
1703 case $host_can_use_collect2 in
1705 *) collect2='collect2$(exeext)' ;;
1707 AC_SUBST([collect2])
1709 # Add a definition of USE_COLLECT2 if system wants one.
1710 case $use_collect2 in
1711 no) use_collect2= ;;
1714 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1715 xm_defines="${xm_defines} USE_COLLECT2"
1716 case $host_can_use_collect2 in
1718 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1724 # ---------------------------
1725 # Assembler & linker features
1726 # ---------------------------
1728 # Identify the assembler which will work hand-in-glove with the newly
1729 # built GCC, so that we can examine its features. This is the assembler
1730 # which will be driven by the driver program.
1732 # If build != host, and we aren't building gas in-tree, we identify a
1733 # build->target assembler and hope that it will have the same features
1734 # as the host->target assembler we'll be using.
1735 AC_MSG_CHECKING(what assembler to use)
1738 gcc_cv_gas_major_version=
1739 gcc_cv_gas_minor_version=
1740 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1741 if test -x "$DEFAULT_ASSEMBLER"; then
1742 gcc_cv_as="$DEFAULT_ASSEMBLER"
1743 elif test -x as$host_exeext; then
1744 # Build using assembler in the current directory.
1745 gcc_cv_as=./as$host_exeext
1746 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1747 && test -f ../gas/Makefile \
1748 && test x$build = x$host; then
1749 # Single tree build which includes gas. We want to prefer it
1750 # over whatever linker top-level may have detected, since
1751 # we'll use what we're building after installation anyway.
1753 _gcc_COMPUTE_GAS_VERSION
1754 rm -f as$host_exeext
1755 $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1756 in_tree_gas_is_elf=no
1757 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1758 || (grep 'obj_format = multi' ../gas/Makefile \
1759 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1761 in_tree_gas_is_elf=yes
1763 m4_pattern_allow([AS_FOR_TARGET])dnl
1764 elif test -x "$AS_FOR_TARGET"; then
1765 gcc_cv_as="$AS_FOR_TARGET"
1766 elif test -x "$AS" && test x$host = x$target; then
1770 if test "x$gcc_cv_as" = x; then
1771 # Search the same directories that the installed compiler will
1772 # search. Else we may find the wrong assembler and lose. If we
1773 # do not find a suitable assembler binary, then try the user's
1776 # Also note we have to check MD_EXEC_PREFIX before checking the
1777 # user's path. Unfortunately, there is no good way to get at the
1778 # value of MD_EXEC_PREFIX here. So we do a brute force search
1779 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1780 # to be fixed as part of the make/configure rewrite too.
1782 if test "x$exec_prefix" = xNONE; then
1783 if test "x$prefix" = xNONE; then
1784 test_prefix=/usr/local
1789 test_prefix=$exec_prefix
1792 # If the loop below does not find an assembler, then use whatever
1793 # one we can find in the users's path.
1795 if test "x$program_prefix" != xNONE; then
1796 gcc_cv_as=${program_prefix}as$host_exeext
1798 gcc_cv_as=`echo as | sed "${program_transform_name}"`$host_exeext
1801 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1802 $test_prefix/libexec/gcc/$target_noncanonical \
1803 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1804 /usr/lib/gcc/$target_noncanonical \
1805 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1806 $test_prefix/$target_noncanonical/bin"
1808 if test x$host = x$target; then
1809 test_dirs="$test_dirs \
1814 /bsd43/usr/lib/cmplrs/cc \
1815 /usr/cross64/usr/bin \
1816 /usr/lib/cmplrs/cc \
1817 /sysv/usr/lib/cmplrs/cc \
1818 /svr4/usr/lib/cmplrs/cc \
1822 for dir in $test_dirs; do
1823 if test -x $dir/as$host_exeext; then
1824 gcc_cv_as=$dir/as$host_exeext
1829 case $in_tree_gas in
1831 AC_MSG_RESULT("newly built gas")
1834 AC_MSG_RESULT($gcc_cv_as)
1838 # Identify the linker which will work hand-in-glove with the newly
1839 # built GCC, so that we can examine its features. This is the linker
1840 # which will be driven by the driver program.
1842 # If build != host, and we aren't building gas in-tree, we identify a
1843 # build->target linker and hope that it will have the same features
1844 # as the host->target linker we'll be using.
1845 AC_MSG_CHECKING(what linker to use)
1848 gcc_cv_gld_major_version=
1849 gcc_cv_gld_minor_version=
1850 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1851 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1852 if test -x "$DEFAULT_LINKER"; then
1853 gcc_cv_ld="$DEFAULT_LINKER"
1854 elif test -x collect-ld$host_exeext; then
1855 # Build using linker in the current directory.
1856 gcc_cv_ld=./collect-ld$host_exeext
1857 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1858 && test -f ../ld/Makefile \
1859 && test x$build = x$host; then
1860 # Single tree build which includes ld. We want to prefer it
1861 # over whatever linker top-level may have detected, since
1862 # we'll use what we're building after installation anyway.
1864 in_tree_ld_is_elf=no
1865 if (grep 'EMUL = .*elf' ../ld/Makefile \
1866 || grep 'EMUL = .*linux' ../ld/Makefile) > /dev/null; then
1867 in_tree_ld_is_elf=yes
1869 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
1872 gcc_cv_gld_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1874 if test x$gcc_cv_gld_version != x; then
1879 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1880 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1882 rm -f collect-ld$host_exeext
1883 $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext \
1885 elif test -x "$LD_FOR_TARGET"; then
1886 gcc_cv_ld="$LD_FOR_TARGET"
1887 elif test -x "$LD" && test x$host = x$target; then
1891 if test "x$gcc_cv_ld" = x; then
1892 # Search the same directories that the installed compiler will
1893 # search. Else we may find the wrong linker and lose. If we
1894 # do not find a suitable linker binary, then try the user's
1897 # Also note we have to check MD_EXEC_PREFIX before checking the
1898 # user's path. Unfortunately, there is no good way to get at the
1899 # value of MD_EXEC_PREFIX here. So we do a brute force search
1900 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1901 # to be fixed as part of the make/configure rewrite too.
1903 if test "x$exec_prefix" = xNONE; then
1904 if test "x$prefix" = xNONE; then
1905 test_prefix=/usr/local
1910 test_prefix=$exec_prefix
1913 # If the loop below does not find an linker, then use whatever
1914 # one we can find in the users's path.
1916 if test "x$program_prefix" != xNONE; then
1917 gcc_cv_ld=${program_prefix}ld$host_exeext
1919 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$host_exeext
1922 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1923 $test_prefix/libexec/gcc/$target_noncanonical \
1924 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1925 /usr/lib/gcc/$target_noncanonical \
1926 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1927 $test_prefix/$target_noncanonical/bin"
1929 if test x$host = x$target; then
1930 test_dirs="$test_dirs \
1935 /bsd43/usr/lib/cmplrs/cc \
1936 /usr/cross64/usr/bin \
1937 /usr/lib/cmplrs/cc \
1938 /sysv/usr/lib/cmplrs/cc \
1939 /svr4/usr/lib/cmplrs/cc \
1943 for dir in $test_dirs; do
1944 if test -x $dir/ld$host_exeext; then
1945 gcc_cv_ld=$dir/ld$host_exeext
1952 AC_MSG_RESULT("newly built ld")
1955 AC_MSG_RESULT($gcc_cv_ld)
1959 # Figure out what nm we will be using.
1960 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1961 AC_MSG_CHECKING(what nm to use)
1963 if test -x nm$host_exeext; then
1964 gcc_cv_nm=./nm$host_exeext
1965 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1966 && test -f ../binutils/Makefile; then
1967 # Single tree build which includes binutils.
1969 gcc_cv_nm=./nm$host_exeext
1970 rm -f nm$host_exeext
1971 $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1972 elif test "x$program_prefix" != xNONE; then
1973 gcc_cv_nm=${program_prefix}nm$host_exeext
1975 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$host_exeext
1978 yes) AC_MSG_RESULT("newly built nm") ;;
1979 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1982 # Figure out what objdump we will be using.
1983 AC_MSG_CHECKING(what objdump to use)
1985 if test -x objdump$host_exeext; then
1986 gcc_cv_objdump=./objdump$host_exeext
1987 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1988 && test -f ../binutils/Makefile; then
1989 # Single tree build which includes binutils.
1991 gcc_cv_objdump=./objdump$host_exeext
1992 rm -f objdump$host_exeext
1993 $symbolic_link ../binutils/objdump$host_exeext \
1994 objdump$host_exeext 2>/dev/null
1995 elif test "x$program_prefix" != xNONE; then
1996 gcc_cv_objdump=${program_prefix}objdump$host_exeext
1998 gcc_cv_objdump=`echo objdump | \
1999 sed "${program_transform_name}"`$host_exeext
2001 case $in_tree_objdump in
2002 yes) AC_MSG_RESULT("newly built objdump") ;;
2003 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2006 # Figure out what assembler alignment features are present.
2007 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2011 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2012 [Define if your assembler supports .balign and .p2align.])])
2014 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2017 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2018 [Define if your assembler supports specifying the maximum number
2019 of bytes to skip when using the GAS .p2align command.])])
2021 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2023 [conftest_label1: .word 0
2025 conftest_label2: .word 0
2027 [if test x$gcc_cv_nm != x; then
2028 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2029 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2030 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2032 else gcc_cv_as_subsection_m1=yes
2034 rm -f conftest.nm1 conftest.nm2
2036 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2037 [Define if your assembler supports .subsection and .subsection -1 starts
2038 emitting at the beginning of your section.])])
2040 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2043 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2045 # .hidden needs to be supported in both the assembler and the linker,
2046 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2047 # This is irritatingly difficult to feature test for; we have to check the
2048 # date string after the version number. If we've got an in-tree
2049 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2051 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2052 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2057 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2058 [if test $in_tree_ld = yes ; then
2060 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2061 && test $in_tree_ld_is_elf = yes; then
2062 gcc_cv_ld_hidden=yes
2065 gcc_cv_ld_hidden=yes
2066 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2067 if echo "$ld_ver" | grep GNU > /dev/null; then
2069 ld_vers=`echo $ld_ver | sed -n \
2070 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2071 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2072 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2073 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2074 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2075 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2076 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2077 if test 0"$ld_date" -lt 20020404; then
2078 if test -n "$ld_date"; then
2079 # If there was date string, but was earlier than 2002-04-04, fail
2081 elif test -z "$ld_vers"; then
2082 # If there was no date string nor ld version number, something is wrong
2085 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2086 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2087 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2088 test -z "$ld_vers_patch" && ld_vers_patch=0
2089 if test "$ld_vers_major" -lt 2; then
2091 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2092 gcc_cv_ld_hidden="no"
2093 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2101 hppa64*-*-hpux* | ia64*-*-hpux*)
2102 gcc_cv_ld_hidden=yes
2110 libgcc_visibility=no
2111 AC_SUBST(libgcc_visibility)
2112 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2113 libgcc_visibility=yes
2114 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2115 [Define if your assembler and linker support .hidden.])
2118 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2119 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2127 [# GAS versions before 2.11 do not support uleb128,
2128 # despite appearing to.
2129 # ??? There exists an elf-specific test that will crash
2130 # the assembler. Perhaps it's better to figure out whether
2131 # arbitrary sections are supported and try the test.
2132 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2133 if echo "$as_ver" | grep GNU > /dev/null; then
2135 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2136 as_major=`echo $as_ver | sed 's/\..*//'`
2137 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2139 if test $as_major -eq 2 && test $as_minor -lt 11
2141 else gcc_cv_as_leb128=yes
2144 [AC_DEFINE(HAVE_AS_LEB128, 1,
2145 [Define if your assembler supports .sleb128 and .uleb128.])])
2147 # GAS versions up to and including 2.11.0 may mis-optimize
2149 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2157 .section .eh_frame,"aw",@progbits
2159 .4byte .LECIE1-.LSCIE1
2173 .4byte .LEFDE1-.LASFDE1
2175 .4byte .LASFDE1-__FRAME_BEGIN__
2183 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2184 cat > conftest.lit <<EOF
2185 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2186 0010 01000000 12000000 18000000 00000000 ................
2187 0020 08000000 04080000 0044 .........D @&t@
2189 cat > conftest.big <<EOF
2190 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2191 0010 00000001 00000012 00000018 00000000 ................
2192 0020 00000008 04000000 0844 .........D @&t@
2194 # If the assembler didn't choke, and we can objdump,
2195 # and we got the correct data, then succeed.
2196 if test x$gcc_cv_objdump != x \
2197 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2198 | tail -3 > conftest.got \
2199 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2200 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2202 gcc_cv_as_eh_frame=yes
2203 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2204 gcc_cv_as_eh_frame=buggy
2206 # Uh oh, what do we do now?
2207 gcc_cv_as_eh_frame=no
2210 if test $gcc_cv_as_eh_frame = buggy; then
2211 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2212 [Define if your assembler mis-optimizes .eh_frame data.])
2215 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2216 [elf,2,12,0], [--fatal-warnings],
2217 [.section .rodata.str, "aMS", @progbits, 1])
2218 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2219 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2220 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2222 # Thread-local storage - the check is heavily parametrized.
2231 .section ".tdata","awT",@progbits
2234 ldq $27,__tls_get_addr($29) !literal!1
2235 lda $16,foo($29) !tlsgd!1
2236 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2237 ldq $27,__tls_get_addr($29) !literal!2
2238 lda $16,foo($29) !tlsldm!2
2239 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2240 ldq $1,foo($29) !gotdtprel
2241 ldah $2,foo($29) !dtprelhi
2242 lda $3,foo($2) !dtprello
2243 lda $4,foo($29) !dtprel
2244 ldq $1,foo($29) !gottprel
2245 ldah $2,foo($29) !tprelhi
2246 lda $3,foo($2) !tprello
2247 lda $4,foo($29) !tprel'
2250 tls_as_opt=--fatal-warnings
2254 .section ".tdata","awT",@progbits
2258 leal foo@TLSGD(,%ebx,1), %eax
2259 leal foo@TLSLDM(%ebx), %eax
2260 leal foo@DTPOFF(%eax), %edx
2261 movl foo@GOTTPOFF(%ebx), %eax
2262 subl foo@GOTTPOFF(%ebx), %eax
2263 addl foo@GOTNTPOFF(%ebx), %eax
2264 movl foo@INDNTPOFF, %eax
2265 movl $foo@TPOFF, %eax
2266 subl $foo@TPOFF, %eax
2267 leal foo@NTPOFF(%ecx), %eax'
2270 tls_as_opt=--fatal-warnings
2274 .section ".tdata","awT",@progbits
2278 leaq foo@TLSGD(%rip), %rdi
2279 leaq foo@TLSLD(%rip), %rdi
2280 leaq foo@DTPOFF(%rax), %rdx
2281 movq foo@GOTTPOFF(%rip), %rax
2282 movq $foo@TPOFF, %rax'
2285 tls_as_opt=--fatal-warnings
2289 .section ".tdata","awT",@progbits
2292 addl r16 = @ltoff(@dtpmod(foo#)), gp
2293 addl r17 = @ltoff(@dtprel(foo#)), gp
2294 addl r18 = @ltoff(@tprel(foo#)), gp
2295 addl r19 = @dtprel(foo#), gp
2296 adds r21 = @dtprel(foo#), r13
2297 movl r23 = @dtprel(foo#)
2298 addl r20 = @tprel(foo#), gp
2299 adds r22 = @tprel(foo#), r13
2300 movl r24 = @tprel(foo#)'
2303 tls_as_opt=--fatal-warnings
2307 .section ".tdata","awT",@progbits
2315 addi 3,31,ld0@got@tlsgd
2317 addi 3,31,x1@got@tlsld
2320 addis 9,3,x2@dtprel@ha
2321 addi 9,9,x2@dtprel@l
2322 lwz 9,x3@got@tprel(31)
2325 addis 9,2,x2@tprel@ha
2326 addi 9,9,x2@tprel@l'
2329 tls_as_opt="-a32 --fatal-warnings"
2333 .section ".tdata","awT",@progbits
2341 addi 3,2,ld0@got@tlsgd
2347 addi 3,2,x1@got@tlsld
2353 addis 9,3,x2@dtprel@ha
2354 addi 9,9,x2@dtprel@l
2357 ld 9,x3@got@dtprel(2)
2363 tls_as_opt="-a64 --fatal-warnings"
2367 .section ".tdata","awT",@progbits
2376 l %r1,foo@GOTNTPOFF(%r12)
2377 l %r1,0(%r1):tls_load:foo
2378 bas %r14,0(%r1,%r13):tls_gdcall:foo
2379 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2382 tls_as_opt="-m31 --fatal-warnings"
2386 .section ".tdata","awT",@progbits
2394 lg %r1,foo@GOTNTPOFF(%r12)
2395 larl %r1,foo@INDNTPOFF
2396 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2397 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2400 tls_as_opt="-m64 -Aesame --fatal-warnings"
2402 sh-*-* | sh[34]-*-*)
2404 .section ".tdata","awT",@progbits
2414 tls_as_opt=--fatal-warnings
2418 sparc*-sun-solaris2.*)
2425 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2427 .section ".tdata",#alloc,#write,#tls
2430 sethi %tgd_hi22(foo), %o0
2431 add %o0, %tgd_lo10(foo), %o1
2432 add %l7, %o1, %o0, %tgd_add(foo)
2433 call __tls_get_addr, %tgd_call(foo)
2434 sethi %tldm_hi22(foo), %l1
2435 add %l1, %tldm_lo10(foo), %l2
2436 add %l7, %l2, %o0, %tldm_add(foo)
2437 call __tls_get_addr, %tldm_call(foo)
2438 sethi %tldo_hix22(foo), %l3
2439 xor %l3, %tldo_lox10(foo), %l4
2440 add %o0, %l4, %l5, %tldo_add(foo)
2441 sethi %tie_hi22(foo), %o3
2442 add %o3, %tie_lo10(foo), %o3
2443 ld [%l7 + %o3], %o2, %tie_ld(foo)
2444 add %g7, %o2, %o4, %tie_add(foo)
2445 sethi %tle_hix22(foo), %l1
2446 xor %l1, %tle_lox10(foo), %o5
2447 ld [%g7 + %o5], %o1'
2452 .section ".tdata","awT",@progbits
2455 sethi %tgd_hi22(foo), %o0
2456 add %o0, %tgd_lo10(foo), %o1
2457 add %l7, %o1, %o0, %tgd_add(foo)
2458 call __tls_get_addr, %tgd_call(foo)
2459 sethi %tldm_hi22(foo), %l1
2460 add %l1, %tldm_lo10(foo), %l2
2461 add %l7, %l2, %o0, %tldm_add(foo)
2462 call __tls_get_addr, %tldm_call(foo)
2463 sethi %tldo_hix22(foo), %l3
2464 xor %l3, %tldo_lox10(foo), %l4
2465 add %o0, %l4, %l5, %tldo_add(foo)
2466 sethi %tie_hi22(foo), %o3
2467 add %o3, %tie_lo10(foo), %o3
2468 ld [%l7 + %o3], %o2, %tie_ld(foo)
2469 add %g7, %o2, %o4, %tie_add(foo)
2470 sethi %tle_hix22(foo), %l1
2471 xor %l1, %tle_lox10(foo), %o5
2472 ld [%g7 + %o5], %o1'
2475 tls_as_opt="-32 --fatal-warnings"
2480 if test -z "$tls_first_major"; then
2481 : # If we don't have a check, assume no support.
2483 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2484 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2485 [AC_DEFINE(HAVE_AS_TLS, 1,
2486 [Define if your assembler supports thread-local storage.])])
2489 # Target-specific assembler checks.
2491 if test x"$demangler_in_ld" = xyes; then
2492 AC_MSG_CHECKING(linker --demangle support)
2493 gcc_cv_ld_demangle=no
2494 if test $in_tree_ld = yes; then
2495 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2496 gcc_cv_ld_demangle=yes
2498 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2499 # Check if the GNU linker supports --demangle option
2500 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2501 gcc_cv_ld_demangle=yes
2504 if test x"$gcc_cv_ld_demangle" = xyes; then
2505 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2506 [Define if your linker supports --demangle option.])
2508 AC_MSG_RESULT($gcc_cv_ld_demangle)
2512 # All TARGET_ABI_OSF targets.
2513 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2514 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2515 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2518 extbl $3, $2, $3 !lituse_bytoff!1
2519 ldq $2, a($29) !literal!1
2520 ldq $4, b($29) !literal!2
2521 ldq_u $3, 0($2) !lituse_base!1
2522 ldq $27, f($29) !literal!5
2523 jsr $26, ($27), f !lituse_jsr!5
2524 ldah $29, 0($26) !gpdisp!3
2525 lda $0, c($29) !gprel
2526 ldah $1, d($29) !gprelhigh
2527 lda $1, d($1) !gprellow
2528 lda $29, 0($29) !gpdisp!3],,
2529 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2530 [Define if your assembler supports explicit relocations.])])
2534 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2535 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2536 [-no-mul-bug-abort], [.text],,
2537 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2538 [Define if your assembler supports the -no-mul-bug-abort option.])])
2542 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2543 [.register %g2, #scratch],,
2544 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2545 [Define if your assembler supports .register.])])
2547 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2549 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2550 [Define if your assembler supports -relax option.])])
2552 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2553 gcc_cv_as_sparc_ua_pcrel,,
2561 .uaword %r_disp32(foo)],
2562 [if test x$gcc_cv_ld != x \
2563 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2564 gcc_cv_as_sparc_ua_pcrel=yes
2567 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2568 [Define if your assembler and linker support unaligned PC relative relocs.])
2570 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2571 gcc_cv_as_sparc_ua_pcrel_hidden,,
2576 .uaword %r_disp32(foo)
2577 .byte 0x32, 0x33, 0x34
2582 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2583 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2584 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2585 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2586 if $gcc_cv_objdump -R conftest 2> /dev/null \
2587 | grep 'DISP32' > /dev/null 2>&1; then
2590 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2594 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2595 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2596 ]) # unaligned pcrel relocs
2598 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2599 gcc_cv_as_sparc_offsetable_lo10,,
2602 or %g1, %lo(ab) + 12, %g1
2603 or %g1, %lo(ab + 12), %g1],
2604 [if test x$gcc_cv_objdump != x \
2605 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2606 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2607 gcc_cv_as_offsetable_lo10=yes
2609 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2610 [Define if your assembler supports offsetable %lo().])])
2614 i[34567]86-*-* | x86_64-*-*)
2617 cygwin* | pe | mingw32*)
2618 # Used for DWARF 2 in PE
2619 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2620 gcc_cv_as_ix86_pe_secrel32,
2626 [if test x$gcc_cv_ld != x \
2627 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2628 gcc_cv_as_ix86_pe_secrel32=yes
2631 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2632 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2636 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2637 gcc_cv_as_ix86_filds_fists,
2638 [2,9,0],, [filds mem; fists mem],,
2639 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2640 [Define if your assembler uses the new HImode fild and fist notation.])])
2642 gcc_GAS_CHECK_FEATURE([cmov syntax],
2643 gcc_cv_as_ix86_cmov_sun_syntax,,,
2644 [cmovl.l %edx, %eax],,
2645 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2646 [Define if your assembler supports the Sun syntax for cmov.])])
2648 # This one is used unconditionally by i386.[ch]; it is to be defined
2649 # to 1 if the feature is present, 0 otherwise.
2650 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2651 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2657 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2658 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2659 [Define true if the assembler supports '.long foo@GOTOFF'.])
2663 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2664 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2666 addl r15 = @ltoffx(x#), gp
2668 ld8.mov r16 = [[r15]], x#],,
2669 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2670 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2676 *-*-aix*) conftest_s=' .csect .text[[PR]]
2678 *-*-darwin*) conftest_s=' .text
2680 *) conftest_s=' .text
2684 gcc_GAS_CHECK_FEATURE([mfcr field support],
2685 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2687 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2688 [Define if your assembler supports mfcr field.])])
2692 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2693 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2694 [ lw $4,%gp_rel(foo)($4)],,
2695 [if test x$target_cpu_default = x
2696 then target_cpu_default=MASK_EXPLICIT_RELOCS
2697 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2700 if test x$gas_flag = xyes \
2701 || test x"$host" != x"$build" \
2702 || test ! -x "$gcc_cv_as" \
2703 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2706 echo "*** This configuration requires the GNU assembler" >&2
2711 # ??? Not all targets support dwarf2 debug_line, even within a version
2712 # of gas. Moreover, we need to emit a valid instruction to trigger any
2713 # info to the output file. So, as supported targets are added to gas 2.11,
2714 # add some instruction here to (also) show we expect this might work.
2715 # ??? Once 2.11 is released, probably need to add first known working
2716 # version to the per-target configury.
2718 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2719 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2720 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2723 ia64*-*-* | s390*-*-*)
2730 if test x"$insn" != x; then
2732 .file 1 \"conftest.s\"
2735 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2736 gcc_cv_as_dwarf2_debug_line,
2737 [elf,2,11,0],, [$conftest_s],
2738 [# ??? This fails with non-gnu grep. Maybe use objdump?
2739 if grep debug_line conftest.o > /dev/null 2>&1; then
2740 gcc_cv_as_dwarf2_debug_line=yes
2743 # The .debug_line file table must be in the exact order that
2744 # we specified the files, since these indices are also used
2745 # by DW_AT_decl_file. Approximate this test by testing if
2746 # the assembler bitches if the same index is assigned twice.
2747 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2748 gcc_cv_as_dwarf2_file_buggy,,,
2752 if test $gcc_cv_as_dwarf2_debug_line = yes \
2753 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2754 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2755 [Define if your assembler supports dwarf2 .file/.loc directives,
2756 and preserves file table indices exactly as given.])
2759 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2760 gcc_cv_as_gdwarf2_flag,
2761 [elf,2,11,0], [--gdwarf2], [$insn],,
2762 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2763 [Define if your assembler supports the --gdwarf2 option.])])
2765 gcc_GAS_CHECK_FEATURE([--gstabs option],
2766 gcc_cv_as_gstabs_flag,
2767 [elf,2,11,0], [--gstabs], [$insn],
2768 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2769 # and warns about it, but still exits successfully. So check for
2771 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2773 else gcc_cv_as_gstabs_flag=yes
2775 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2776 [Define if your assembler supports the --gstabs option.])])
2779 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2780 gcc_cv_ld_ro_rw_mix=unknown
2781 if test $in_tree_ld = yes ; then
2782 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2783 && test $in_tree_ld_is_elf = yes; then
2784 gcc_cv_ld_ro_rw_mix=read-write
2786 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2787 echo '.section myfoosect, "a"' > conftest1.s
2788 echo '.section myfoosect, "aw"' > conftest2.s
2789 echo '.byte 1' >> conftest2.s
2790 echo '.section myfoosect, "a"' > conftest3.s
2791 echo '.byte 0' >> conftest3.s
2792 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2793 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2794 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2795 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2796 conftest2.o conftest3.o > /dev/null 2>&1; then
2797 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2798 | sed -e '/myfoosect/!d' -e N`
2799 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2800 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2801 gcc_cv_ld_ro_rw_mix=read-only
2803 gcc_cv_ld_ro_rw_mix=read-write
2808 rm -f conftest.* conftest[123].*
2811 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2812 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2813 [Define if your linker links a mix of read-only
2814 and read-write sections into a read-write section.])
2816 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2818 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2819 gcc_cv_ld_eh_frame_hdr=no
2820 if test $in_tree_ld = yes ; then
2821 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2822 && test $in_tree_ld_is_elf = yes; then
2823 gcc_cv_ld_eh_frame_hdr=yes
2825 elif test x$gcc_cv_ld != x; then
2826 # Check if linker supports --eh-frame-hdr option
2827 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2828 gcc_cv_ld_eh_frame_hdr=yes
2831 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2832 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2833 [Define if your linker supports --eh-frame-hdr option.])
2835 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2837 AC_MSG_CHECKING(linker position independent executable support)
2839 if test $in_tree_ld = yes ; then
2840 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2841 && test $in_tree_ld_is_elf = yes; then
2844 elif test x$gcc_cv_ld != x; then
2845 # Check if linker supports -pie option
2846 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2850 if test x"$gcc_cv_ld_pie" = xyes; then
2851 AC_DEFINE(HAVE_LD_PIE, 1,
2852 [Define if your linker supports -pie option.])
2854 AC_MSG_RESULT($gcc_cv_ld_pie)
2860 AC_CACHE_CHECK(linker --as-needed support,
2861 gcc_cv_ld_as_needed,
2862 [gcc_cv_ld_as_needed=no
2863 if test $in_tree_ld = yes ; then
2864 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2865 && test $in_tree_ld_is_elf = yes; then
2866 gcc_cv_ld_as_needed=yes
2868 elif test x$gcc_cv_ld != x; then
2869 # Check if linker supports --as-needed and --no-as-needed options
2870 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2871 gcc_cv_ld_as_needed=yes
2875 if test x"$gcc_cv_ld_as_needed" = xyes; then
2876 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2877 [Define if your linker supports --as-needed and --no-as-needed options.])
2881 powerpc64*-*-linux*)
2882 AC_CACHE_CHECK(linker support for omitting dot symbols,
2883 gcc_cv_ld_no_dot_syms,
2884 [gcc_cv_ld_no_dot_syms=no
2885 if test $in_tree_ld = yes ; then
2886 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2887 gcc_cv_ld_no_dot_syms=yes
2889 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2890 cat > conftest1.s <<EOF
2894 cat > conftest2.s <<EOF
2895 .section ".opd","aw"
2900 .quad .LEfoo,.TOC.@tocbase,0
2906 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2907 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2908 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2909 gcc_cv_ld_no_dot_syms=yes
2911 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2914 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2915 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2916 [Define if your PowerPC64 linker only needs function descriptor syms.])
2921 if test x$with_sysroot = x && test x$host = x$target \
2922 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2923 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2924 [Define to PREFIX/include if cpp should also search that directory.])
2927 # Find out what GC implementation we want, or may, use.
2929 [ --with-gc={page,zone} choose the garbage collection mechanism to use
2936 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
2941 echo "Using $GGC for garbage collection."
2943 # Use the system's zlib library.
2945 zlibinc="-I\$(srcdir)/../zlib"
2946 AC_ARG_WITH(system-zlib,
2947 [ --with-system-zlib use installed libz],
2954 dnl Very limited version of automake's enable-maintainer-mode
2956 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2957 dnl maintainer-mode is disabled by default
2958 AC_ARG_ENABLE(maintainer-mode,
2959 [ --enable-maintainer-mode
2960 enable make rules and dependencies not useful
2961 (and sometimes confusing) to the casual installer],
2962 maintainer_mode=$enableval,
2965 AC_MSG_RESULT($maintainer_mode)
2967 if test "$maintainer_mode" = "yes"; then
2974 AC_MSG_CHECKING([whether to use libbanshee for points-to alias analysis])
2975 AC_ARG_WITH(libbanshee,
2976 [ --with-libbanshee enable libbanshee],
2977 libbanshee="$with_libbanshee",
2980 if test x"$libbanshee" = xyes; then
2981 BANSHEELIB="../libbanshee/points-to/libandersen.a ../libbanshee/engine/libbansheeengine.a ../libbanshee/libcompat/libbansheecompat.a "
2982 BANSHEEINC="-I\$(srcdir)/../libbanshee/libcompat -I\$(srcdir)/../libbanshee -I\$(srcdir)/../libbanshee/points-to"
2983 ANDER="tree-alias-ander.o"
2984 AC_DEFINE(HAVE_BANSHEE, 1, [Define if BANSHEE is available])
2990 AC_MSG_RESULT($with_libbanshee)
2993 AC_SUBST(BANSHEEINC)
2994 AC_SUBST(BANSHEELIB)
3000 # Make empty files to contain the specs and options for each language.
3001 # Then add #include lines to for a compiler that has specs and/or options.
3006 for subdir in . $subdirs
3008 if test -f $srcdir/$subdir/lang.opt; then
3009 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3011 if test -f $srcdir/$subdir/lang-specs.h; then
3012 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3014 if test -f $srcdir/$subdir/$subdir-tree.def; then
3015 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3019 # These (without "all_") are set in each config-lang.in.
3020 # `language' must be a single word so is spelled singularly.
3025 all_outputs='Makefile fixinc/Makefile gccbug mklibgcc mkheaders libada-mk'
3026 # List of language makefile fragments.
3028 # List of language subdirectory makefiles. Deprecated.
3030 # Files for gengtype
3031 all_gtfiles="$target_gtfiles"
3032 # Files for gengtype with language
3033 all_gtfiles_files_langs=
3034 all_gtfiles_files_files=
3036 # Add the language fragments.
3037 # Languages are added via two mechanisms. Some information must be
3038 # recorded in makefile variables, these are defined in config-lang.in.
3039 # We accumulate them and plug them into the main Makefile.
3040 # The other mechanism is a set of hooks for each of the main targets
3041 # like `clean', `install', etc.
3043 language_hooks="Make-hooks"
3053 . ${srcdir}/$s/config-lang.in
3054 if test "x$language" = x
3056 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3059 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3060 if test -f ${srcdir}/$s/Makefile.in
3061 then all_lang_makefiles="$s/Makefile"
3063 all_languages="$all_languages $language"
3064 if test "x$boot_language" = xyes
3066 all_boot_languages="$all_boot_languages $language"
3068 all_compilers="$all_compilers $compilers"
3069 all_stagestuff="$all_stagestuff $stagestuff"
3070 all_outputs="$all_outputs $outputs"
3071 all_gtfiles="$all_gtfiles $gtfiles"
3074 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3075 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3079 # Pick up gtfiles for c
3082 . ${srcdir}/c-config-lang.in
3083 all_gtfiles="$all_gtfiles $gtfiles"
3086 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3087 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3091 for language in $all_languages
3093 check_languages="$check_languages check-$language"
3096 # We link each language in with a set of hooks, reached indirectly via
3101 target_list="all.build all.cross start.encap rest.encap tags \
3102 install-normal install-common install-man \
3103 uninstall info man srcextra srcman srcinfo \
3104 mostlyclean clean distclean maintainer-clean \
3105 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3106 for t in $target_list
3109 for lang in $all_languages
3113 echo "lang.$t: $x" >> Make-hooks
3122 echo "dir ." > .gdbinit
3123 echo "dir ${srcdir}" >> .gdbinit
3124 if test x$gdb_needs_out_file_path = xyes
3126 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3128 if test "x$subdirs" != x; then
3131 echo "dir ${srcdir}/$s" >> .gdbinit
3134 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3136 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3137 # absolute path for gcc_tooldir based on inserting the number of up-directory
3138 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3139 # $(libsubdir)/@(unlibsubdir) based path.
3140 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3141 # make and thus we'd get different behavior depending on where we built the
3143 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3144 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3146 changequote(<<, >>)dnl
3147 # An explanation of the sed strings:
3148 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3149 # -e 's|/$||' match a trailing forward slash and eliminates it
3150 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3151 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3153 # (*) Note this pattern overwrites the first character of the string
3154 # with a forward slash if one is not already present. This is not a
3155 # problem because the exact names of the sub-directories concerned is
3156 # unimportant, just the number of them matters.
3158 # The practical upshot of these patterns is like this:
3160 # prefix exec_prefix result
3161 # ------ ----------- ------
3163 # /foo/ /foo/bar ../
3164 # /foo /foo/bar/ ../
3165 # /foo/ /foo/bar/ ../
3166 # /foo /foo/bar/ugg ../../
3169 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3170 changequote([, ])dnl
3172 AC_SUBST(gcc_tooldir)
3175 # Find a directory in which to install a shared libgcc.
3177 AC_ARG_ENABLE(version-specific-runtime-libs,
3178 [ --enable-version-specific-runtime-libs
3179 specify that runtime libraries should be
3180 installed in a compiler-specific directory])
3182 AC_ARG_WITH(slibdir,
3183 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3184 slibdir="$with_slibdir",
3185 if test "${enable_version_specific_runtime_libs+set}" = set; then
3186 slibdir='$(libsubdir)'
3187 elif test "$host" != "$target"; then
3188 slibdir='$(build_tooldir)/lib'
3194 objdir=`${PWDCMD-pwd}`
3197 # Substitute configuration variables
3200 AC_SUBST(all_boot_languages)
3201 AC_SUBST(all_compilers)
3202 AC_SUBST(all_gtfiles)
3203 AC_SUBST(all_gtfiles_files_langs)
3204 AC_SUBST(all_gtfiles_files_files)
3205 AC_SUBST(all_lang_makefrags)
3206 AC_SUBST(all_lang_makefiles)
3207 AC_SUBST(all_languages)
3208 AC_SUBST(all_stagestuff)
3209 AC_SUBST(build_exeext)
3210 AC_SUBST(build_install_headers_dir)
3211 AC_SUBST(build_xm_file_list)
3212 AC_SUBST(build_xm_include_list)
3213 AC_SUBST(build_xm_defines)
3214 AC_SUBST(check_languages)
3215 AC_SUBST(cc_set_by_configure)
3216 AC_SUBST(quoted_cc_set_by_configure)
3217 AC_SUBST(cpp_install_dir)
3218 AC_SUBST(xmake_file)
3219 AC_SUBST(tmake_file)
3220 AC_SUBST(extra_gcc_objs)
3221 AC_SUBST(extra_headers_list)
3222 AC_SUBST(extra_objs)
3223 AC_SUBST(extra_parts)
3224 AC_SUBST(extra_passes)
3225 AC_SUBST(extra_programs)
3226 AC_SUBST(float_h_file)
3227 AC_SUBST(gcc_config_arguments)
3228 AC_SUBST(gcc_gxx_include_dir)
3229 AC_SUBST(libstdcxx_incdir)
3230 AC_SUBST(gcc_version)
3231 AC_SUBST(gcc_version_full)
3232 AC_SUBST(gcc_version_trigger)
3233 AC_SUBST(host_exeext)
3234 AC_SUBST(host_xm_file_list)
3235 AC_SUBST(host_xm_include_list)
3236 AC_SUBST(host_xm_defines)
3237 AC_SUBST(out_host_hook_obj)
3239 AC_SUBST(lang_opt_files)
3240 AC_SUBST(lang_specs_files)
3241 AC_SUBST(lang_tree_files)
3242 AC_SUBST(local_prefix)
3244 AC_SUBST(objc_boehm_gc)
3246 AC_SUBST(out_object_file)
3247 AC_SUBST(stage_prefix_set_by_configure)
3248 AC_SUBST(quoted_stage_prefix_set_by_configure)
3249 AC_SUBST(symbolic_link)
3250 AC_SUBST(thread_file)
3251 AC_SUBST(tm_file_list)
3252 AC_SUBST(tm_include_list)
3253 AC_SUBST(tm_defines)
3254 AC_SUBST(tm_p_file_list)
3255 AC_SUBST(tm_p_include_list)
3256 AC_SUBST(xm_file_list)
3257 AC_SUBST(xm_include_list)
3258 AC_SUBST(xm_defines)
3259 AC_SUBST(c_target_objs)
3260 AC_SUBST(cxx_target_objs)
3261 AC_SUBST(target_cpu_default)
3263 AC_SUBST_FILE(language_hooks)
3265 # If it doesn't already exist, create document directory
3266 echo "checking for the document directory." 1>&2
3267 if test -d doc ; then
3274 if test x${build} = x${host} ; then
3275 if test x${host} = x${target} ; then
3276 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3278 echo "Links are now set up to build a cross-compiler" 1>&2
3279 echo " from ${host} to ${target}." 1>&2
3282 if test x${host} = x${target} ; then
3283 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3284 echo " for ${target}." 1>&2
3286 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3287 echo " from ${host} to ${target}." 1>&2
3291 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3292 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3294 # Configure the subdirectories
3295 # AC_CONFIG_SUBDIRS($subdirs)
3297 # Create the Makefile
3298 # and configure language subdirectories
3299 AC_CONFIG_FILES($all_outputs)
3301 AC_CONFIG_COMMANDS([default],
3303 case ${CONFIG_HEADERS} in
3304 *auto-host.h:config.in*)
3307 # Make sure all the subdirs exist.
3310 test -d $d || mkdir $d
3312 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3313 # bootstrapping and the installation procedure can still use
3314 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3315 # FLAGS_TO_PASS has been modified to solve the problem there.
3316 # This is virtually a duplicate of what happens in configure.lang; we do
3317 # an extra check to make sure this only happens if ln -s can be used.
3318 if test "$symbolic_link" = "ln -s"; then
3319 for d in ${subdirs} fixinc ; do
3320 STARTDIR=`${PWDCMD-pwd}`
3322 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3325 $symbolic_link ../$t $t 2>/dev/null
3332 symbolic_link='$symbolic_link'