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 # Determine the host, build, and target systems
38 # Determine the noncanonical target name, for directory use.
39 ACX_NONCANONICAL_TARGET
41 # Determine the target- and build-specific subdirectories
44 # Set program_transform_name
47 # Check for bogus environment variables.
48 # Test if LIBRARY_PATH contains the notation for the current directory
49 # since this would lead to problems installing/building glibc.
50 # LIBRARY_PATH contains the current directory if one of the following
52 # - one of the terminals (":" and ";") is the first or last sign
53 # - two terminals occur directly after each other
54 # - the path contains an element with a dot in it
55 AC_MSG_CHECKING(LIBRARY_PATH variable)
57 case ${LIBRARY_PATH} in
58 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
59 library_path_setting="contains current directory"
62 library_path_setting="ok"
66 AC_MSG_RESULT($library_path_setting)
67 if test "$library_path_setting" != "ok"; then
69 *** LIBRARY_PATH shouldn't contain the current directory when
70 *** building gcc. Please change the environment variable
71 *** and run configure again.])
74 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
75 # since this would lead to problems installing/building glibc.
76 # GCC_EXEC_PREFIX contains the current directory if one of the following
78 # - one of the terminals (":" and ";") is the first or last sign
79 # - two terminals occur directly after each other
80 # - the path contains an element with a dot in it
81 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
83 case ${GCC_EXEC_PREFIX} in
84 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
85 gcc_exec_prefix_setting="contains current directory"
88 gcc_exec_prefix_setting="ok"
92 AC_MSG_RESULT($gcc_exec_prefix_setting)
93 if test "$gcc_exec_prefix_setting" != "ok"; then
95 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
96 *** building gcc. Please change the environment variable
97 *** and run configure again.])
104 # Specify the local prefix
106 AC_ARG_WITH(local-prefix,
107 [ --with-local-prefix=DIR specifies directory to put local include],
108 [case "${withval}" in
109 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
111 *) local_prefix=$with_local_prefix ;;
114 # Default local prefix if it is empty
115 if test x$local_prefix = x; then
116 local_prefix=/usr/local
119 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
120 # passed in by the toplevel make and thus we'd get different behavior
121 # depending on where we built the sources.
123 # Specify the g++ header file directory
124 AC_ARG_WITH(gxx-include-dir,
125 [ --with-gxx-include-dir=DIR
126 specifies directory to put g++ header files],
127 [case "${withval}" in
128 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
130 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
133 if test x${gcc_gxx_include_dir} = x; then
134 if test x${enable_version_specific_runtime_libs} = xyes; then
135 gcc_gxx_include_dir='${libsubdir}/include/c++'
137 libstdcxx_incdir='c++/$(version)'
138 changequote(<<, >>)dnl
139 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
144 AC_ARG_WITH(cpp_install_dir,
145 [ --with-cpp-install-dir=DIR
146 install the user visible C preprocessor in DIR
147 (relative to PREFIX) as well as PREFIX/bin],
148 [if test x$withval = xyes; then
149 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
150 elif test x$withval != xno; then
151 cpp_install_dir=$withval
154 # We would like to our source tree to be readonly. However when releases or
155 # pre-releases are generated, the flex/bison generated files as well as the
156 # various formats of manuals need to be included along with the rest of the
157 # sources. Therefore we have --enable-generated-files-in-srcdir to do
160 AC_MSG_CHECKING([whether to place generated files in the source directory])
161 dnl generated-files-in-srcdir is disabled by default
162 AC_ARG_ENABLE(generated-files-in-srcdir,
163 [ --enable-generated-files-in-srcdir
164 put copies of generated files in source dir
165 intended for creating source tarballs for users
166 without texinfo bison or flex.],
167 generated_files_in_srcdir=$enableval,
168 generated_files_in_srcdir=no)
170 AC_MSG_RESULT($generated_files_in_srcdir)
172 if test "$generated_files_in_srcdir" = "yes"; then
179 # -------------------
180 # Find default linker
181 # -------------------
185 [ --with-gnu-ld arrange to work with GNU ld.],
186 gnu_ld_flag="$with_gnu_ld",
189 # With pre-defined ld
191 [ --with-ld arrange to use the specified ld (full pathname)],
192 DEFAULT_LINKER="$with_ld")
193 if test x"${DEFAULT_LINKER+set}" = x"set"; then
194 if test ! -x "$DEFAULT_LINKER"; then
195 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
196 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
199 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
200 [Define to enable the use of a default linker.])
203 AC_MSG_CHECKING([whether a default linker was specified])
204 if test x"${DEFAULT_LINKER+set}" = x"set"; then
205 if test x"$gnu_ld_flag" = x"no"; then
206 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
208 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
214 # With demangler in GNU ld
215 AC_ARG_WITH(demangler-in-ld,
216 [ --with-demangler-in-ld try to use demangler in GNU ld.],
217 demangler_in_ld="$with_demangler_in_ld",
220 # ----------------------
221 # Find default assembler
222 # ----------------------
226 [ --with-gnu-as arrange to work with GNU as],
227 gas_flag="$with_gnu_as",
231 [ --with-as arrange to use the specified as (full pathname)],
232 DEFAULT_ASSEMBLER="$with_as")
233 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
234 if test ! -x "$DEFAULT_ASSEMBLER"; then
235 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
236 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
239 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
240 [Define to enable the use of a default assembler.])
243 AC_MSG_CHECKING([whether a default assembler was specified])
244 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
245 if test x"$gas_flag" = x"no"; then
246 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
248 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
258 # If a non-executable a.out is present (e.g. created by GNU as above even if
259 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
260 # file, even when creating an executable, so an execution test fails.
261 # Remove possible default executable files to avoid this.
263 # FIXME: This really belongs into AC_PROG_CC and can be removed once
264 # Autoconf includes it.
265 rm -f a.out a.exe b.out
267 # Find the native compiler
270 # autoconf is lame and doesn't give us any substitution variable for this.
271 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
272 NO_MINUS_C_MINUS_O=yes
274 OUTPUT_OPTION='-o $@'
276 AC_SUBST(NO_MINUS_C_MINUS_O)
277 AC_SUBST(OUTPUT_OPTION)
279 # -------------------------
280 # Check C compiler features
281 # -------------------------
288 # sizeof(char) is 1 by definition.
289 AC_CHECK_SIZEOF(void *)
290 AC_CHECK_SIZEOF(short)
292 AC_CHECK_SIZEOF(long)
293 if test $ac_cv_c_long_long = yes; then
294 AC_CHECK_SIZEOF(long long)
296 if test $ac_cv_c___int64 = yes; then
297 AC_CHECK_SIZEOF(__int64)
300 # ---------------------
301 # Warnings and checking
302 # ---------------------
304 # Check $CC warning features (if it's GCC).
305 # We want to use -pedantic, but we don't want warnings about
308 # So, we only use -pedantic if we can disable those warnings.
311 [whether ${CC} accepts -Wno-long-long],
312 [ac_cv_prog_cc_w_no_long_long],
313 [save_CFLAGS="$CFLAGS"
314 CFLAGS="-Wno-long-long"
315 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
316 [ac_cv_prog_cc_w_no_long_long=yes],
317 [ac_cv_prog_cc_w_no_long_long=no])
318 CFLAGS="$save_CFLAGS"
322 [whether ${CC} accepts -Wno-variadic-macros],
323 [ac_cv_prog_cc_w_no_variadic_macros],
324 [save_CFLAGS="$CFLAGS"
325 CFLAGS="-Wno-variadic-macros"
326 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
327 [ac_cv_prog_cc_w_no_variadic_macros=yes],
328 [ac_cv_prog_cc_w_no_variadic_macros=no])
329 CFLAGS="$save_CFLAGS"
333 if test $ac_cv_prog_cc_w_no_long_long = yes \
334 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
335 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
337 AC_SUBST(strict1_warn)
339 # Add -Wold-style-definition if it's accepted
341 [whether ${CC} accepts -Wold-style-definition],
342 [ac_cv_prog_cc_w_old_style_definition],
343 [save_CFLAGS="$CFLAGS"
344 CFLAGS="-Wold-style-definition"
345 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
346 [ac_cv_prog_cc_w_old_style_definition=yes],
347 [ac_cv_prog_cc_w_old_style_definition=no])
348 CFLAGS="$save_CFLAGS"
350 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
351 strict1_warn="${strict1_warn} -Wold-style-definition"
354 # Enable -Werror, period.
355 AC_ARG_ENABLE(werror_always,
356 [ --enable-werror-always enable -Werror always], [],
357 [enable_werror_always=no])
358 if test x${enable_werror_always} = xyes ; then
359 strict1_warn="${strict1_warn} -Werror"
363 # If the native compiler is GCC, we can enable warnings even in stage1.
364 # That's useful for people building cross-compilers, or just running a
367 if test "x$GCC" = "xyes"; then
368 warn_cflags='$(GCC_WARN_CFLAGS)'
370 AC_SUBST(warn_cflags)
372 # Enable -Werror in bootstrap stage2 and later.
374 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
377 AC_ARG_ENABLE(werror,
378 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
379 [if test x$is_release = x ; then
380 # Default to "yes" on development branches.
383 # Default to "no" on release branches.
386 if test x$enable_werror = xyes ; then
391 # Enable expensive internal checks
392 AC_ARG_ENABLE(checking,
393 [ --enable-checking[=LIST]
394 enable expensive run-time checks. With LIST,
395 enable only specific categories of checks.
396 Categories are: yes,no,all,none,release.
397 Flags are: assert,fold,gc,gcac,misc,
398 rtlflag,rtl,runtime,tree,valgrind.],
399 [ac_checking_flags="${enableval}"],[
400 # Determine the default checks.
401 if test x$is_release = x ; then
402 ac_checking_flags=yes
404 ac_checking_flags=release
410 ac_gc_always_collect=
413 ac_runtime_checking=1
415 ac_valgrind_checking=
416 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
417 for check in $ac_checking_flags
420 # these set all the flags to specific states
421 yes) ac_assert_checking=1 ; ac_checking=1 ;
422 ac_fold_checking= ; ac_gc_checking=1 ;
423 ac_gc_always_collect= ; ac_rtl_checking= ;
424 ac_rtlflag_checking=1 ; ac_runtime_chacking=1 ;
425 ac_tree_checking=1 ; ac_valgrind_checking= ;;
426 no|none) ac_assert_checking= ; ac_checking= ;
427 ac_fold_checking= ; ac_gc_checking= ;
428 ac_gc_always_collect= ; ac_rtl_checking= ;
429 ac_rtlflag_checking= ; ac_runtime_chacking= ;
430 ac_tree_checking= ; ac_valgrind_checking= ;;
431 all) ac_assert_checking=1 ; ac_checking=1 ;
432 ac_fold_checking=1 ; ac_gc_checking=1 ;
433 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
434 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
435 ac_tree_checking=1 ; ac_valgrind_checking= ;;
436 release) ac_assert_checking=1 ; ac_checking= ;
437 ac_fold_checking= ; ac_gc_checking= ;
438 ac_gc_always_collect= ; ac_rtl_checking= ;
439 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
440 ac_tree_checking= ; ac_valgrind_checking= ;;
441 # these enable particular checks
442 assert) ac_assert_checking=1 ;;
443 fold) ac_fold_checking=1 ;;
444 gc) ac_gc_checking=1 ;;
445 gcac) ac_gc_always_collect=1 ;;
446 misc) ac_checking=1 ;;
447 rtl) ac_rtl_checking=1 ;;
448 rtlflag) ac_rtlflag_checking=1 ;;
449 runtime) ac_runtime_checking=1 ;;
450 tree) ac_tree_checking=1 ;;
451 valgrind) ac_valgrind_checking=1 ;;
452 *) AC_MSG_ERROR(unknown check category $check) ;;
458 if test x$ac_checking != x ; then
459 AC_DEFINE(ENABLE_CHECKING, 1,
460 [Define if you want more run-time sanity checks. This one gets a grab
461 bag of miscellaneous but relatively cheap checks.])
462 nocommon_flag=-fno-common
464 AC_SUBST(nocommon_flag)
465 if test x$ac_assert_checking != x ; then
466 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
467 [Define if you want assertions enabled. This is a cheap check.])
469 if test x$ac_runtime_checking != x ; then
470 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
471 [Define if you want runtime assertions enabled. This is a cheap check.])
473 if test x$ac_tree_checking != x ; then
474 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
475 [Define if you want all operations on trees (the basic data
476 structure of the front ends) to be checked for dynamic type safety
477 at runtime. This is moderately expensive. The tree browser debugging
478 routines will also be enabled by this option.
480 TREEBROWSER=tree-browser.o
482 AC_SUBST(TREEBROWSER)
483 if test x$ac_rtl_checking != x ; then
484 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
485 [Define if you want all operations on RTL (the basic data structure
486 of the optimizer and back end) to be checked for dynamic type safety
487 at runtime. This is quite expensive.])
489 if test x$ac_rtlflag_checking != x ; then
490 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
491 [Define if you want RTL flag accesses to be checked against the RTL
492 codes that are supported for each access macro. This is relatively
495 if test x$ac_gc_checking != x ; then
496 AC_DEFINE(ENABLE_GC_CHECKING, 1,
497 [Define if you want the garbage collector to do object poisoning and
498 other memory allocation checks. This is quite expensive.])
500 if test x$ac_gc_always_collect != x ; then
501 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
502 [Define if you want the garbage collector to operate in maximally
503 paranoid mode, validating the entire heap and collecting garbage at
504 every opportunity. This is extremely expensive.])
506 if test x$ac_fold_checking != x ; then
507 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
508 [Define if you want fold checked that it never destructs its argument.
509 This is quite expensive.])
511 valgrind_path_defines=
514 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
515 dnl # an if statement. This was the source of very frustrating bugs
516 dnl # in converting to autoconf 2.5x!
517 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
519 if test x$ac_valgrind_checking != x ; then
520 # It is certainly possible that there's valgrind but no valgrind.h.
521 # GCC relies on making annotations so we must have both.
522 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
524 [#include <valgrind/memcheck.h>
525 #ifndef VALGRIND_DISCARD
526 #error VALGRIND_DISCARD not defined
528 [gcc_cv_header_valgrind_memcheck_h=yes],
529 [gcc_cv_header_valgrind_memcheck_h=no])
530 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
531 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
533 [#include <memcheck.h>
534 #ifndef VALGRIND_DISCARD
535 #error VALGRIND_DISCARD not defined
537 [gcc_cv_header_memcheck_h=yes],
538 gcc_cv_header_memcheck_h=no)
539 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
540 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
541 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
542 if test "x$valgrind_path" = "x" \
543 || (test $have_valgrind_h = no \
544 && test $gcc_cv_header_memcheck_h = no \
545 && test $gcc_cv_header_valgrind_memcheck_h = no); then
546 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
548 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
549 valgrind_command="$valgrind_path -q"
550 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
551 [Define if you want to run subprograms and generated programs
552 through valgrind (a memory checker). This is extremely expensive.])
553 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
554 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
555 [Define if valgrind's valgrind/memcheck.h header is installed.])
557 if test $gcc_cv_header_memcheck_h = yes; then
558 AC_DEFINE(HAVE_MEMCHECK_H, 1,
559 [Define if valgrind's memcheck.h header is installed.])
562 AC_SUBST(valgrind_path_defines)
563 AC_SUBST(valgrind_command)
565 AC_ARG_ENABLE(mapped-location,
566 [ --enable-mapped-location location_t is fileline integer cookie],,
567 enable_mapped_location=no)
569 if test "$enable_mapped_location" = yes ; then
570 AC_DEFINE(USE_MAPPED_LOCATION, 1,
571 [Define if location_t is fileline integer cookie.])
574 # Enable code coverage collection
575 AC_ARG_ENABLE(coverage,
576 [ --enable-coverage[=LEVEL]
577 enable compiler's code coverage collection.
578 Use to measure compiler performance and locate
579 unused parts of the compiler. With LEVEL, specify
580 optimization. Values are opt, noopt,
582 [case "${enableval}" in
584 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
587 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
590 # a.k.a. --disable-coverage
594 AC_MSG_ERROR(unknown coverage setting $enableval)
598 AC_SUBST(coverage_flags)
600 AC_ARG_ENABLE(gather-detailed-mem-stats,
601 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
602 [enable_gather_detailed_mem_stats=no])
603 if test x$enable_gather_detailed_mem_stats = xyes ; then
604 AC_DEFINE(GATHER_STATISTICS, 1,
605 [Define to enable detailed memory allocation stats gathering.])
608 # -------------------------------
609 # Miscenalleous configure options
610 # -------------------------------
614 [ --with-stabs arrange to use stabs instead of host debug format],
618 # Determine whether or not multilibs are enabled.
619 AC_ARG_ENABLE(multilib,
620 [ --enable-multilib enable library support for multiple ABIs],
621 [], [enable_multilib=yes])
622 AC_SUBST(enable_multilib)
624 # Enable __cxa_atexit for C++.
625 AC_ARG_ENABLE(__cxa_atexit,
626 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
630 # Pass with no value to take the default
631 # Pass with a value to specify a thread package
632 AC_ARG_ENABLE(threads,
633 [ --enable-threads enable thread usage for target GCC
634 --enable-threads=LIB use LIB thread package for target GCC],,
637 AC_ARG_ENABLE(objc-gc,
638 [ --enable-objc-gc enable the use of Boehm's garbage collector with
639 the GNU Objective-C runtime],
640 if test x$enable_objc_gc = xno; then
648 [ --with-dwarf2 force the default debug format to be DWARF 2],
649 dwarf2="$with_dwarf2",
652 AC_ARG_ENABLE(shared,
653 [ --disable-shared don't provide a shared libgcc],
655 case $enable_shared in
659 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
660 for pkg in $enableval; do
661 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
668 ], [enable_shared=yes])
669 AC_SUBST(enable_shared)
672 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
674 case ${with_sysroot} in
675 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
676 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
679 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
680 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
682 if test "x$exec_prefix" = xNONE; then
683 if test "x$prefix" = xNONE; then
684 test_prefix=/usr/local
689 test_prefix=$exec_prefix
691 case ${TARGET_SYSTEM_ROOT} in
692 "${test_prefix}"|"${test_prefix}/"*|\
693 '${exec_prefix}'|'${exec_prefix}/'*)
694 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
695 TARGET_SYSTEM_ROOT_DEFINE="$t"
700 TARGET_SYSTEM_ROOT_DEFINE=
701 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
703 AC_SUBST(TARGET_SYSTEM_ROOT)
704 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
705 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
707 # Build with intermodule optimisations
708 AC_ARG_ENABLE(intermodule,
709 [ --enable-intermodule build the compiler in one step],
710 [case ${enable_intermodule} in
711 yes) onestep="-onestep";;
717 # Sanity check enable_languages in case someone does not run the toplevel
718 # configure # script.
719 AC_ARG_ENABLE(languages,
720 [ --enable-languages=LIST specify which front-ends to build],
721 [case ,${enable_languages}, in
723 # go safe -- we cannot be much sure without the toplevel
725 # analysis of which target libs are present and usable
729 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
734 enable_languages=c,${enable_languages}
737 [enable_languages=c])
740 for lang in ${srcdir}/*/config-lang.in
743 # The odd quoting in the next line works around
744 # an apparent bug in bash 1.12 on linux.
746 ${srcdir}/[*]/config-lang.in) ;;
748 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
749 if test "x$lang_alias" = x
751 echo "$lang doesn't set \$language." 1>&2
754 case ",$enable_languages," in
756 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
764 # -------------------------
765 # Checks for other programs
766 # -------------------------
770 # Find some useful tools
772 # We need awk to create options.c and options.h.
773 # Bail out if it's missing.
775 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
783 # By default, the Darwin ranlib will not treat common symbols as
784 # definitions when building the archive table of contents. Other
785 # ranlibs do that; pass an option to the Darwin ranlib that makes
786 # it behave similarly.
792 AC_SUBST(ranlib_flags)
796 # See if cmp has --ignore-initial.
797 gcc_AC_PROG_CMP_IGNORE_INITIAL
799 # See if we have the mktemp command.
800 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
802 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
804 # See if makeinfo has been installed and is modern enough
805 # that we can use it.
806 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
807 [GNU texinfo.* \([0-9][0-9.]*\)],
809 if test $gcc_cv_prog_makeinfo_modern = no; then
810 MAKEINFO="$MISSING makeinfo"
812 *** Makeinfo is missing or too old.
813 *** Info documentation will not be built.])
820 # Is pod2man recent enough to regenerate manpages?
821 AC_MSG_CHECKING([for recent Pod::Man])
822 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
824 GENERATED_MANPAGES=generated-manpages
829 AC_SUBST(GENERATED_MANPAGES)
832 dnl Don't use AC_PROG_LEX; we insist on flex.
833 dnl LEXLIB is not useful in gcc.
834 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
837 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
839 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
840 # check for build == host before using them.
843 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
844 && test -d ../binutils ; then
845 NM='$(objdir)/../binutils/nm-new'
847 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
851 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
852 && test -d ../binutils ; then
853 AR='$(objdir)/../binutils/ar'
855 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
859 # --------------------
860 # Checks for C headers
861 # --------------------
863 AC_MSG_CHECKING(for GNU C library)
864 AC_CACHE_VAL(gcc_cv_glibc,
866 [#include <features.h>],[
867 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
868 #error Not a GNU C library system
872 AC_MSG_RESULT($gcc_cv_glibc)
873 if test $gcc_cv_glibc = yes; then
874 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
877 # Need to reject headers which give warnings, so that the -Werror bootstrap
878 # works later. *sigh* This needs to come before all header checks.
885 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
886 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
887 sys/resource.h sys/param.h sys/times.h sys/stat.h \
888 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
890 # Check for thread headers.
891 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
892 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
894 # These tests can't be done till we know if we have limits.h.
902 # Stage specific cflags for build.
908 stage1_cflags="-Wa,-J"
914 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
915 # sources; use -no-cpp-precomp to get to GNU cpp.
916 # Apple's GCC has bugs in designated initializer handling, so disable
918 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
921 AC_SUBST(stage1_cflags)
923 # These libraries may be used by collect2.
924 # We may need a special search path to get them linked.
925 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
927 for libs in '' -lld -lmld \
928 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
929 '-L/usr/lib/cmplrs/cc3.11 -lmld'
932 AC_TRY_LINK_FUNC(ldopen,
933 [gcc_cv_collect2_libs="$libs"; break])
936 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
937 case $gcc_cv_collect2_libs in
939 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
941 AC_SUBST(COLLECT2_LIBS)
943 # When building Ada code on Alpha, we need exc_resume which is usually in
944 # -lexc. So test for it.
947 AC_SEARCH_LIBS(exc_resume, exc)
950 AC_SUBST(GNAT_LIBEXC)
952 # Some systems put ldexp and frexp in libm instead of libc; assume
953 # they're both in the same place. jcf-dump needs them.
956 AC_SEARCH_LIBS(ldexp, m)
961 # Use <inttypes.h> only if it exists,
962 # doesn't clash with <sys/types.h>, and declares intmax_t.
963 AC_MSG_CHECKING(for inttypes.h)
964 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
966 [#include <sys/types.h>
967 #include <inttypes.h>],
969 [gcc_cv_header_inttypes_h=yes],
970 gcc_cv_header_inttypes_h=no)])
971 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
972 if test $gcc_cv_header_inttypes_h = yes; then
973 AC_DEFINE(HAVE_INTTYPES_H, 1,
974 [Define if you have a working <inttypes.h> header file.])
977 dnl Disabled until we have a complete test for buggy enum bitfields.
978 dnl gcc_AC_C_ENUM_BF_UNSIGNED
980 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
981 sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
982 fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
983 scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
986 if test x$ac_cv_func_mbstowcs = xyes; then
987 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
988 [ AC_TRY_RUN([#include <stdlib.h>
994 gcc_cv_func_mbstowcs_works=yes,
995 gcc_cv_func_mbstowcs_works=no,
996 gcc_cv_func_mbstowcs_works=yes)])
997 if test x$gcc_cv_func_mbstowcs_works = xyes; then
998 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
999 [Define this macro if mbstowcs does not crash when its
1000 first argument is NULL.])
1004 AC_CHECK_TYPE(ssize_t, int)
1006 # Try to determine the array type of the second argument of getgroups
1007 # for the target system (int or gid_t).
1009 if test "${target}" = "${build}"; then
1010 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1013 # This condition may need some tweaking. It should include all
1014 # targets where the array type of the second argument of getgroups
1015 # is int and the type of gid_t is not equivalent to int.
1016 *-*-sunos* | *-*-ultrix*)
1017 TARGET_GETGROUPS_T=int
1020 TARGET_GETGROUPS_T=gid_t
1024 AC_SUBST(TARGET_GETGROUPS_T)
1026 gcc_AC_FUNC_PRINTF_PTR
1027 gcc_AC_FUNC_MMAP_BLACKLIST
1031 # Under VMS, vfork works very differently than on Unix. The standard test
1032 # won't work, and it isn't easily adaptable. It makes more sense to
1034 ac_cv_func_vfork_works=yes
1040 # Until we have in-tree GNU iconv:
1042 AC_SUBST(LIBICONV_DEP)
1048 # We will need to find libiberty.h and ansidecl.h
1049 saved_CFLAGS="$CFLAGS"
1050 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1051 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
1052 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
1053 fprintf_unlocked strstr errno snprintf vasprintf \
1054 malloc realloc calloc free basename getopt clock getpagesize, , ,[
1055 #include "ansidecl.h"
1056 #include "system.h"])
1058 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1059 #include "ansidecl.h"
1061 #ifdef HAVE_SYS_RESOURCE_H
1062 #include <sys/resource.h>
1067 #include "ansidecl.h"
1069 #ifdef HAVE_SYS_RESOURCE_H
1070 #include <sys/resource.h>
1072 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
1073 [Define to \`long' if <sys/resource.h> doesn't define.])])
1075 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1076 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1077 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1078 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1079 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1080 #include "ansidecl.h"
1089 gcc_AC_CHECK_DECLS(times, , ,[
1090 #include "ansidecl.h"
1092 #ifdef HAVE_SYS_TIMES_H
1093 #include <sys/times.h>
1097 # More time-related stuff.
1098 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1100 #include "ansidecl.h"
1102 #ifdef HAVE_SYS_TIMES_H
1103 #include <sys/times.h>
1105 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1106 if test $ac_cv_struct_tms = yes; then
1107 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1108 [Define if <sys/times.h> defines struct tms.])
1111 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1112 # revisit after autoconf 2.50.
1113 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1115 #include "ansidecl.h"
1117 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1118 if test $gcc_cv_type_clock_t = yes; then
1119 AC_DEFINE(HAVE_CLOCK_T, 1,
1120 [Define if <time.h> defines clock_t.])
1123 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1124 CFLAGS="$saved_CFLAGS"
1126 gcc_AC_INITFINI_ARRAY
1128 # mkdir takes a single argument on some systems.
1129 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1137 # With Setjmp/Longjmp based exception handling.
1138 AC_ARG_ENABLE(sjlj-exceptions,
1139 [ --enable-sjlj-exceptions
1140 arrange to use setjmp/longjmp exception handling],
1141 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1142 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1143 [Define 0/1 to force the choice for exception handling model.])])
1145 # For platforms with the unwind ABI which includes an unwind library,
1146 # libunwind, we can choose to use the system libunwind.
1147 AC_ARG_WITH(system-libunwind,
1148 [ --with-system-libunwind use installed libunwind])
1150 # --------------------------------------------------------
1151 # Build, host, and target specific configuration fragments
1152 # --------------------------------------------------------
1154 # Collect build-machine-specific information.
1155 . ${srcdir}/config.build
1157 # Collect host-machine-specific information.
1158 . ${srcdir}/config.host
1162 # Collect target-machine-specific information.
1163 . ${srcdir}/config.gcc
1165 extra_objs="${host_extra_objs} ${extra_objs}"
1166 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1168 # Default the target-machine variables that were not explicitly set.
1169 if test x"$tm_file" = x
1170 then tm_file=$cpu_type/$cpu_type.h; fi
1172 if test x"$extra_headers" = x
1173 then extra_headers=; fi
1175 if test x$md_file = x
1176 then md_file=$cpu_type/$cpu_type.md; fi
1178 if test x$out_file = x
1179 then out_file=$cpu_type/$cpu_type.c; fi
1181 if test x"$tmake_file" = x
1182 then tmake_file=$cpu_type/t-$cpu_type
1185 if test x"$dwarf2" = xyes
1186 then tm_file="$tm_file tm-dwarf2.h"
1189 # Say what files are being used for the output code and MD file.
1190 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1191 echo "Using \`$srcdir/config/$md_file' as machine description file."
1193 # If any of the xm_file variables contain nonexistent files, warn
1194 # about them and drop them.
1197 for x in $build_xm_file; do
1198 if test -f $srcdir/config/$x
1200 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1206 for x in $host_xm_file; do
1207 if test -f $srcdir/config/$x
1209 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1215 for x in $xm_file; do
1216 if test -f $srcdir/config/$x
1218 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1224 for f in $tm_file; do
1227 if test $count = ax; then
1228 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1230 echo "Using the following target machine macro files:"
1231 for f in $tm_file; do
1232 echo " $srcdir/config/$f"
1236 if test x$need_64bit_hwint = xyes; then
1237 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1238 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1241 if test x$use_long_long_for_widest_fast_int = xyes; then
1242 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1243 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1244 efficiently supported by the host hardware.])
1248 for f in $host_xm_file; do
1251 if test $count = a; then
1253 elif test $count = ax; then
1254 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1256 echo "Using the following host machine macro files:"
1257 for f in $host_xm_file; do
1258 echo " $srcdir/config/$f"
1261 echo "Using ${out_host_hook_obj} for host machine hooks."
1263 if test "$host_xm_file" != "$build_xm_file"; then
1265 for f in $build_xm_file; do
1268 if test $count = a; then
1270 elif test $count = ax; then
1271 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1273 echo "Using the following build machine macro files:"
1274 for f in $build_xm_file; do
1275 echo " $srcdir/config/$f"
1284 # Check if a valid thread package
1285 case ${enable_threads} in
1288 target_thread_file='single'
1292 target_thread_file='single'
1294 aix | dce | gnat | irix | posix | posix95 | rtems | \
1295 single | solaris | vxworks | win32 )
1296 target_thread_file=${enable_threads}
1299 echo "${enable_threads} is an unknown thread package" 1>&2
1304 if test x${thread_file} = x; then
1305 # No thread file set by target-specific clauses in config.gcc,
1306 # so use file chosen by default logic above
1307 thread_file=${target_thread_file}
1310 # Make gthr-default.h if we have a thread file.
1312 if test $thread_file != single; then
1313 rm -f gthr-default.h
1314 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1315 gthread_flags=-DHAVE_GTHR_DEFAULT
1317 AC_SUBST(gthread_flags)
1324 if test x$enable___cxa_atexit = xyes || \
1325 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1326 if test x$host = x$target; then
1327 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1328 [echo "__cxa_atexit can't be enabled on this target"])
1330 # We can't check for __cxa_atexit when building a cross, so assume
1334 if test x$use_cxa_atexit = xyes; then
1335 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1336 [Define if you want to use __cxa_atexit, rather than atexit, to
1337 register C++ destructors for local statics and global objects.
1338 This is essential for fully standards-compliant handling of
1339 destructors, but requires __cxa_atexit in libc.])
1343 # Look for a file containing extra machine modes.
1344 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1345 extra_modes_file='$(srcdir)'/config/${extra_modes}
1346 AC_SUBST(extra_modes_file)
1347 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1348 [Define to the name of a file containing a list of extra machine modes
1349 for this architecture.])
1352 # Convert extra_options into a form suitable for Makefile use.
1354 for f in $extra_options; do
1355 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1357 AC_SUBST(extra_opt_files)
1359 # auto-host.h is the file containing items generated by autoconf and is
1360 # the first file included by config.h.
1361 # If host=build, it is correct to have bconfig include auto-host.h
1362 # as well. If host!=build, we are in error and need to do more
1363 # work to find out the build config parameters.
1364 if test x$host = x$build
1366 build_auto=auto-host.h
1368 # We create a subdir, then run autoconf in the subdir.
1369 # To prevent recursion we set host and build for the new
1370 # invocation of configure to the build for this invocation
1377 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1378 *) realsrcdir=../${srcdir};;
1380 saved_CFLAGS="${CFLAGS}"
1381 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1382 ${realsrcdir}/configure \
1383 --enable-languages=${enable_languages-all} \
1384 --target=$target_alias --host=$build_alias --build=$build_alias
1385 CFLAGS="${saved_CFLAGS}"
1387 # We just finished tests for the build machine, so rename
1388 # the file auto-build.h in the gcc directory.
1389 mv auto-host.h ../auto-build.h
1392 build_auto=auto-build.h
1394 AC_SUBST(build_subdir)
1396 tm_file="${tm_file} defaults.h"
1397 tm_p_file="${tm_p_file} tm-preds.h"
1398 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1399 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1400 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1401 # put this back in temporarily.
1402 xm_file="ansidecl.h ${xm_file}"
1409 # Compile in configure arguments.
1410 if test -f configargs.h ; then
1411 # Being re-configured.
1412 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1413 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1415 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1418 # Double all backslashes and backslash all quotes to turn
1419 # gcc_config_arguments into a C string.
1420 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1421 $gcc_config_arguments
1423 gcc_config_arguments_str=`cat conftest.out`
1426 cat > configargs.h <<EOF
1427 /* Generated automatically. */
1428 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1429 static const char thread_model[] = "$thread_file";
1431 static const struct {
1432 const char *name, *value;
1433 } configure_default_options[] = $configure_default_options;
1437 # Internationalization
1438 ZW_GNU_GETTEXT_SISTER_DIR
1440 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1441 # -liconv on the link line twice.
1442 case "$LIBINTL" in *$LIBICONV*)
1446 # Windows32 Registry support for specifying GCC installation paths.
1447 AC_ARG_ENABLE(win32-registry,
1448 [ --disable-win32-registry
1449 disable lookup of installation paths in the
1450 Registry on Windows hosts
1451 --enable-win32-registry enable registry lookup (default)
1452 --enable-win32-registry=KEY
1453 use KEY instead of GCC version as the last portion
1454 of the registry key],,)
1457 win32 | pe | cygwin* | mingw32* | uwin*)
1458 if test "x$enable_win32_registry" != xno; then
1459 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1462 if test "x$enable_win32_registry" != xno; then
1463 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1464 [Define to 1 if installation paths should be looked up in the Windows
1465 Registry. Ignored on non-Windows hosts.])
1467 if test "x$enable_win32_registry" != xyes \
1468 && test "x$enable_win32_registry" != x; then
1469 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1470 [Define to be the last component of the Windows registry key under which
1471 to look for installation paths. The full key used will be
1472 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1473 The default is the GCC version number.])
1479 # Get an absolute path to the GCC top-level source directory
1480 holddir=`${PWDCMD-pwd}`
1482 topdir=`${PWDCMD-pwd}`
1485 # Conditionalize the makefile for this host machine.
1487 for f in ${host_xmake_file}
1489 if test -f ${srcdir}/config/$f
1491 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1495 # Conditionalize the makefile for this target machine.
1497 for f in ${tmake_file}
1499 if test -f ${srcdir}/config/$f
1501 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1504 tmake_file="${tmake_file_}"
1506 # If the host doesn't support symlinks, modify CC in
1507 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1508 # Otherwise, we can use "CC=$(CC)".
1512 cc_set_by_configure="\$(CC)"
1513 quoted_cc_set_by_configure="\$(CC)"
1514 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1515 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
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 # This is a terrible hack which will go away some day.
1526 host_cc_for_libada=${CC}
1527 AC_SUBST(host_cc_for_libada)
1529 out_object_file=`basename $out_file .c`.o
1531 tm_file_list="options.h"
1532 tm_include_list="options.h"
1533 for f in $tm_file; do
1536 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1537 tm_include_list="${tm_include_list} $f"
1540 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1541 tm_include_list="${tm_include_list} config/$f"
1548 for f in $tm_p_file; do
1551 tm_p_file_list="${tm_p_file_list} $f"
1552 tm_p_include_list="${tm_p_include_list} $f"
1555 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1556 tm_p_include_list="${tm_p_include_list} config/$f"
1562 for f in $xm_file; do
1565 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1566 xm_include_list="${xm_include_list} $f"
1569 xm_file_list="${xm_file_list} $f"
1570 xm_include_list="${xm_include_list} $f"
1573 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1574 xm_include_list="${xm_include_list} config/$f"
1580 host_xm_include_list=
1581 for f in $host_xm_file; do
1584 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1585 host_xm_include_list="${host_xm_include_list} $f"
1588 host_xm_file_list="${host_xm_file_list} $f"
1589 host_xm_include_list="${host_xm_include_list} $f"
1592 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1593 host_xm_include_list="${host_xm_include_list} config/$f"
1599 for f in $build_xm_file; do
1602 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1603 build_xm_include_list="${build_xm_include_list} $f"
1605 auto-build.h | auto-host.h )
1606 build_xm_file_list="${build_xm_file_list} $f"
1607 build_xm_include_list="${build_xm_include_list} $f"
1610 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1611 build_xm_include_list="${build_xm_include_list} config/$f"
1616 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1617 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1618 CROSS= AC_SUBST(CROSS)
1619 ALL=all.internal AC_SUBST(ALL)
1620 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1621 if test x$host != x$target
1623 CROSS="-DCROSS_COMPILE"
1625 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1626 case "$host","$target" in
1627 # Darwin crosses can use the host system's libraries and headers,
1628 # because of the fat library support. Of course, it must be the
1629 # same version of Darwin on both sides. Allow the user to
1630 # just say --target=foo-darwin without a version number to mean
1631 # "the version on this system".
1632 *-*-darwin*,*-*-darwin*)
1633 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1634 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1635 if test $hostos = $targetos -o $targetos = darwin ; then
1637 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1642 i?86-*-*,x86_64-*-* \
1643 | powerpc*-*-*,powerpc64*-*-*)
1644 CROSS="$CROSS -DNATIVE_CROSS" ;;
1646 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1647 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1648 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1651 # If this is a cross-compiler that does not
1652 # have its own set of headers then define
1655 # If this is using newlib, without having the headers available now,
1656 # then define inhibit_libc in LIBGCC2_CFLAGS.
1657 # This prevents libgcc2 from containing any code which requires libc
1660 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1661 test x$with_newlib = xyes ; } &&
1662 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1663 inhibit_libc=-Dinhibit_libc
1665 AC_SUBST(inhibit_libc)
1667 # When building gcc with a cross-compiler, we need to adjust things so
1668 # that the generator programs are still built with the native compiler.
1669 # Also, we cannot run fixincludes or fix-header.
1671 # These are the normal (build=host) settings:
1672 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1673 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1674 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1676 # Possibly disable fixproto, on a per-target basis.
1677 case ${use_fixproto} in
1682 STMP_FIXPROTO=stmp-fixproto
1685 AC_SUBST(STMP_FIXPROTO)
1687 # And these apply if build != host, or we are generating coverage data
1688 if test x$build != x$host || test "x$coverage_flags" != x
1690 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1692 if test "x$TARGET_SYSTEM_ROOT" = x; then
1693 if [ "x$STMP_FIXPROTO" != x ] ; then
1694 STMP_FIXPROTO=stmp-install-fixproto
1699 # Expand extra_headers to include complete path.
1700 # This substitutes for lots of t-* files.
1702 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1703 for file in ${extra_headers} ; do
1704 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1707 # Define collect2 in Makefile.
1708 case $host_can_use_collect2 in
1710 *) collect2='collect2$(exeext)' ;;
1712 AC_SUBST([collect2])
1714 # Add a definition of USE_COLLECT2 if system wants one.
1715 case $use_collect2 in
1716 no) use_collect2= ;;
1719 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1720 xm_defines="${xm_defines} USE_COLLECT2"
1721 case $host_can_use_collect2 in
1723 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1729 # ---------------------------
1730 # Assembler & linker features
1731 # ---------------------------
1733 # Identify the assembler which will work hand-in-glove with the newly
1734 # built GCC, so that we can examine its features. This is the assembler
1735 # which will be driven by the driver program.
1737 # If build != host, and we aren't building gas in-tree, we identify a
1738 # build->target assembler and hope that it will have the same features
1739 # as the host->target assembler we'll be using.
1740 AC_MSG_CHECKING(what assembler to use)
1743 gcc_cv_gas_major_version=
1744 gcc_cv_gas_minor_version=
1745 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1746 if test -x "$DEFAULT_ASSEMBLER"; then
1747 gcc_cv_as="$DEFAULT_ASSEMBLER"
1748 elif test -x as$build_exeext; then
1749 # Build using assembler in the current directory.
1750 gcc_cv_as=./as$build_exeext
1751 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1752 && test -f ../gas/Makefile \
1753 && test x$build = x$host; then
1754 # Single tree build which includes gas. We want to prefer it
1755 # over whatever linker top-level may have detected, since
1756 # we'll use what we're building after installation anyway.
1758 _gcc_COMPUTE_GAS_VERSION
1759 rm -f as$build_exeext
1760 $LN_S ../gas/as-new$build_exeext as$build_exeext 2>/dev/null
1761 in_tree_gas_is_elf=no
1762 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1763 || (grep 'obj_format = multi' ../gas/Makefile \
1764 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1766 in_tree_gas_is_elf=yes
1768 m4_pattern_allow([AS_FOR_TARGET])dnl
1769 elif test -x "$AS_FOR_TARGET"; then
1770 gcc_cv_as="$AS_FOR_TARGET"
1771 elif test -x "$AS" && test x$host = x$target; then
1775 gcc_version=`cat $srcdir/BASE-VER`
1777 if test "x$gcc_cv_as" = x; then
1778 # Search the same directories that the installed compiler will
1779 # search. Else we may find the wrong assembler and lose. If we
1780 # do not find a suitable assembler binary, then try the user's
1783 # Also note we have to check MD_EXEC_PREFIX before checking the
1784 # user's path. Unfortunately, there is no good way to get at the
1785 # value of MD_EXEC_PREFIX here. So we do a brute force search
1786 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1787 # to be fixed as part of the make/configure rewrite too.
1789 if test "x$exec_prefix" = xNONE; then
1790 if test "x$prefix" = xNONE; then
1791 test_prefix=/usr/local
1796 test_prefix=$exec_prefix
1799 # If the loop below does not find an assembler, then use whatever
1800 # one we can find in the users's path. We are looking for a
1801 # ${build} -> ${target} assembler.
1802 if test "x$program_prefix" != xNONE; then
1803 gcc_cv_as=${program_prefix}as$build_exeext
1804 elif test x$build != x$host && test x$build != x$target; then
1805 gcc_cv_as=${target_noncanonical}-as$build_exeext
1807 gcc_cv_as=`echo as | sed "${program_transform_name}"`$build_exeext
1810 if test x$host = x$build; then
1811 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1812 $test_prefix/libexec/gcc/$target_noncanonical \
1813 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1814 /usr/lib/gcc/$target_noncanonical \
1815 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1816 $test_prefix/$target_noncanonical/bin"
1821 if test x$build = x$target; then
1822 test_dirs="$test_dirs \
1827 /bsd43/usr/lib/cmplrs/cc \
1828 /usr/cross64/usr/bin \
1829 /usr/lib/cmplrs/cc \
1830 /sysv/usr/lib/cmplrs/cc \
1831 /svr4/usr/lib/cmplrs/cc \
1835 for dir in $test_dirs; do
1836 if test -x $dir/as$build_exeext; then
1837 gcc_cv_as=$dir/as$build_exeext
1842 case $in_tree_gas in
1844 AC_MSG_RESULT("newly built gas")
1847 AC_MSG_RESULT($gcc_cv_as)
1851 # Identify the linker which will work hand-in-glove with the newly
1852 # built GCC, so that we can examine its features. This is the linker
1853 # which will be driven by the driver program.
1855 # If build != host, and we aren't building gas in-tree, we identify a
1856 # build->target linker and hope that it will have the same features
1857 # as the host->target linker we'll be using.
1858 AC_MSG_CHECKING(what linker to use)
1861 gcc_cv_gld_major_version=
1862 gcc_cv_gld_minor_version=
1863 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1864 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1865 if test -x "$DEFAULT_LINKER"; then
1866 gcc_cv_ld="$DEFAULT_LINKER"
1867 elif test -x collect-ld$build_exeext; then
1868 # Build using linker in the current directory.
1869 gcc_cv_ld=./collect-ld$build_exeext
1870 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1871 && test -f ../ld/Makefile \
1872 && test x$build = x$host; then
1873 # Single tree build which includes ld. We want to prefer it
1874 # over whatever linker top-level may have detected, since
1875 # we'll use what we're building after installation anyway.
1877 in_tree_ld_is_elf=no
1878 if (grep 'EMUL = .*elf' ../ld/Makefile \
1879 || grep 'EMUL = .*linux' ../ld/Makefile \
1880 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1881 in_tree_ld_is_elf=yes
1883 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
1886 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1888 if test x$gcc_cv_gld_version != x; then
1893 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1894 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1896 rm -f collect-ld$build_exeext
1897 $LN_S ../ld/ld-new$build_exeext collect-ld$build_exeext 2>/dev/null
1898 elif test -x "$LD_FOR_TARGET"; then
1899 gcc_cv_ld="$LD_FOR_TARGET"
1900 elif test -x "$LD" && test x$host = x$target; then
1904 if test "x$gcc_cv_ld" = x; then
1905 # Search the same directories that the installed compiler will
1906 # search. Else we may find the wrong linker and lose. If we
1907 # do not find a suitable linker binary, then try the user's
1910 # Also note we have to check MD_EXEC_PREFIX before checking the
1911 # user's path. Unfortunately, there is no good way to get at the
1912 # value of MD_EXEC_PREFIX here. So we do a brute force search
1913 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1914 # to be fixed as part of the make/configure rewrite too.
1916 if test "x$exec_prefix" = xNONE; then
1917 if test "x$prefix" = xNONE; then
1918 test_prefix=/usr/local
1923 test_prefix=$exec_prefix
1926 # If the loop below does not find a linker, then use whatever
1927 # one we can find in the users's path. We are looking for a
1928 # ${build} -> ${target} linker.
1929 if test "x$program_prefix" != xNONE; then
1930 gcc_cv_ld=${program_prefix}ld$build_exeext
1931 elif test x$build != x$host && test x$build != x$target; then
1932 gcc_cv_ld=${target_noncanonical}-ld$build_exeext
1934 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$build_exeext
1937 if test x$host = x$build; then
1938 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1939 $test_prefix/libexec/gcc/$target_noncanonical \
1940 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1941 /usr/lib/gcc/$target_noncanonical \
1942 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1943 $test_prefix/$target_noncanonical/bin"
1948 if test x$build = x$target; then
1949 test_dirs="$test_dirs \
1954 /bsd43/usr/lib/cmplrs/cc \
1955 /usr/cross64/usr/bin \
1956 /usr/lib/cmplrs/cc \
1957 /sysv/usr/lib/cmplrs/cc \
1958 /svr4/usr/lib/cmplrs/cc \
1962 for dir in $test_dirs; do
1963 if test -x $dir/ld$build_exeext; then
1964 gcc_cv_ld=$dir/ld$build_exeext
1971 AC_MSG_RESULT("newly built ld")
1974 AC_MSG_RESULT($gcc_cv_ld)
1978 # Figure out what nm we will be using.
1979 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1980 AC_MSG_CHECKING(what nm to use)
1982 if test -x nm$build_exeext; then
1983 gcc_cv_nm=./nm$build_exeext
1984 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1985 && test -f ../binutils/Makefile; then
1986 # Single tree build which includes binutils.
1988 gcc_cv_nm=./nm$build_exeext
1989 rm -f nm$build_exeext
1990 $LN_S ../binutils/nm-new$build_exeext nm$build_exeext 2>/dev/null
1991 elif test "x$program_prefix" != xNONE; then
1992 gcc_cv_nm=${program_prefix}nm$build_exeext
1993 elif test x$build != x$host && test x$build != x$target; then
1994 gcc_cv_nm=${target_noncanonical}-nm$build_exeext
1996 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$build_exeext
1999 yes) AC_MSG_RESULT("newly built nm") ;;
2000 no) AC_MSG_RESULT($gcc_cv_nm) ;;
2003 # Figure out what objdump we will be using.
2004 AC_MSG_CHECKING(what objdump to use)
2006 if test -x objdump$build_exeext; then
2007 gcc_cv_objdump=./objdump$build_exeext
2008 elif test -f $gcc_cv_binutils_srcdir/configure.in \
2009 && test -f ../binutils/Makefile; then
2010 # Single tree build which includes binutils.
2012 gcc_cv_objdump=./objdump$build_exeext
2013 rm -f objdump$build_exeext
2014 $LN_S ../binutils/objdump$build_exeext objdump$build_exeext 2>/dev/null
2015 elif test "x$program_prefix" != xNONE; then
2016 gcc_cv_objdump=${program_prefix}objdump$build_exeext
2017 elif test x$build != x$host && test x$build != x$target; then
2018 gcc_cv_objdump=${target_noncanonical}-objdump$build_exeext
2020 gcc_cv_objdump=`echo objdump | \
2021 sed "${program_transform_name}"`$build_exeext
2023 case $in_tree_objdump in
2024 yes) AC_MSG_RESULT("newly built objdump") ;;
2025 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2028 # Figure out what assembler alignment features are present.
2029 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2033 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2034 [Define if your assembler supports .balign and .p2align.])])
2036 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2039 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2040 [Define if your assembler supports specifying the maximum number
2041 of bytes to skip when using the GAS .p2align command.])])
2043 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2045 [conftest_label1: .word 0
2047 conftest_label2: .word 0
2049 [if test x$gcc_cv_nm != x; then
2050 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2051 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2052 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2054 else gcc_cv_as_subsection_m1=yes
2056 rm -f conftest.nm1 conftest.nm2
2058 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2059 [Define if your assembler supports .subsection and .subsection -1 starts
2060 emitting at the beginning of your section.])])
2062 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2065 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2067 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2070 .NSUBSPA $CODE$,COMDAT],,
2071 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2073 # .hidden needs to be supported in both the assembler and the linker,
2074 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2075 # This is irritatingly difficult to feature test for; we have to check the
2076 # date string after the version number. If we've got an in-tree
2077 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2079 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2080 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2085 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2086 [if test $in_tree_ld = yes ; then
2088 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2089 && test $in_tree_ld_is_elf = yes; then
2090 gcc_cv_ld_hidden=yes
2093 gcc_cv_ld_hidden=yes
2094 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2095 if echo "$ld_ver" | grep GNU > /dev/null; then
2097 ld_vers=`echo $ld_ver | sed -n \
2098 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2099 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2100 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2101 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2102 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2103 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2104 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2105 if test 0"$ld_date" -lt 20020404; then
2106 if test -n "$ld_date"; then
2107 # If there was date string, but was earlier than 2002-04-04, fail
2109 elif test -z "$ld_vers"; then
2110 # If there was no date string nor ld version number, something is wrong
2113 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2114 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2115 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2116 test -z "$ld_vers_patch" && ld_vers_patch=0
2117 if test "$ld_vers_major" -lt 2; then
2119 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2120 gcc_cv_ld_hidden="no"
2121 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2129 hppa64*-*-hpux* | ia64*-*-hpux*)
2130 gcc_cv_ld_hidden=yes
2138 libgcc_visibility=no
2139 AC_SUBST(libgcc_visibility)
2140 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2141 libgcc_visibility=yes
2142 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2143 [Define if your assembler and linker support .hidden.])
2146 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2147 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2155 [# GAS versions before 2.11 do not support uleb128,
2156 # despite appearing to.
2157 # ??? There exists an elf-specific test that will crash
2158 # the assembler. Perhaps it's better to figure out whether
2159 # arbitrary sections are supported and try the test.
2160 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2161 if echo "$as_ver" | grep GNU > /dev/null; then
2163 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2164 as_major=`echo $as_ver | sed 's/\..*//'`
2165 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2167 if test $as_major -eq 2 && test $as_minor -lt 11
2169 else gcc_cv_as_leb128=yes
2172 [AC_DEFINE(HAVE_AS_LEB128, 1,
2173 [Define if your assembler supports .sleb128 and .uleb128.])])
2175 # GAS versions up to and including 2.11.0 may mis-optimize
2177 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2185 .section .eh_frame,"aw",@progbits
2187 .4byte .LECIE1-.LSCIE1
2201 .4byte .LEFDE1-.LASFDE1
2203 .4byte .LASFDE1-__FRAME_BEGIN__
2211 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2212 cat > conftest.lit <<EOF
2213 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2214 0010 01000000 12000000 18000000 00000000 ................
2215 0020 08000000 04080000 0044 .........D @&t@
2217 cat > conftest.big <<EOF
2218 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2219 0010 00000001 00000012 00000018 00000000 ................
2220 0020 00000008 04000000 0844 .........D @&t@
2222 # If the assembler didn't choke, and we can objdump,
2223 # and we got the correct data, then succeed.
2224 if test x$gcc_cv_objdump != x \
2225 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2226 | tail -3 > conftest.got \
2227 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2228 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2230 gcc_cv_as_eh_frame=yes
2231 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2232 gcc_cv_as_eh_frame=buggy
2234 # Uh oh, what do we do now?
2235 gcc_cv_as_eh_frame=no
2238 if test $gcc_cv_as_eh_frame = buggy; then
2239 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2240 [Define if your assembler mis-optimizes .eh_frame data.])
2243 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2244 [elf,2,12,0], [--fatal-warnings],
2245 [.section .rodata.str, "aMS", @progbits, 1])
2246 if test $gcc_cv_as_shf_merge = no; then
2247 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2248 [elf,2,12,0], [--fatal-warnings],
2249 [.section .rodata.str, "aMS", %progbits, 1])
2251 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2252 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2253 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2255 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2256 [elf,2,15,91], [--fatal-warnings],
2257 [.section .text,"axG",@progbits,.foo,comdat])
2258 if test $gcc_cv_as_comdat_group = yes; then
2259 gcc_cv_as_comdat_group_percent=no
2261 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2262 [elf,2,15,91], [--fatal-warnings],
2263 [.section .text,"axG",%progbits,.foo,comdat])
2265 AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2266 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2267 [Define 0/1 if your assembler supports COMDAT group.])
2269 # Thread-local storage - the check is heavily parametrized.
2278 .section ".tdata","awT",@progbits
2281 ldq $27,__tls_get_addr($29) !literal!1
2282 lda $16,foo($29) !tlsgd!1
2283 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2284 ldq $27,__tls_get_addr($29) !literal!2
2285 lda $16,foo($29) !tlsldm!2
2286 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2287 ldq $1,foo($29) !gotdtprel
2288 ldah $2,foo($29) !dtprelhi
2289 lda $3,foo($2) !dtprello
2290 lda $4,foo($29) !dtprel
2291 ldq $1,foo($29) !gottprel
2292 ldah $2,foo($29) !tprelhi
2293 lda $3,foo($2) !tprello
2294 lda $4,foo($29) !tprel'
2297 tls_as_opt=--fatal-warnings
2301 .section ".tdata","awT",@progbits
2310 .section ".tdata","awT",@progbits
2314 leal foo@TLSGD(,%ebx,1), %eax
2315 leal foo@TLSLDM(%ebx), %eax
2316 leal foo@DTPOFF(%eax), %edx
2317 movl foo@GOTTPOFF(%ebx), %eax
2318 subl foo@GOTTPOFF(%ebx), %eax
2319 addl foo@GOTNTPOFF(%ebx), %eax
2320 movl foo@INDNTPOFF, %eax
2321 movl $foo@TPOFF, %eax
2322 subl $foo@TPOFF, %eax
2323 leal foo@NTPOFF(%ecx), %eax'
2326 tls_as_opt=--fatal-warnings
2330 .section ".tdata","awT",@progbits
2334 leaq foo@TLSGD(%rip), %rdi
2335 leaq foo@TLSLD(%rip), %rdi
2336 leaq foo@DTPOFF(%rax), %rdx
2337 movq foo@GOTTPOFF(%rip), %rax
2338 movq $foo@TPOFF, %rax'
2341 tls_as_opt=--fatal-warnings
2345 .section ".tdata","awT",@progbits
2348 addl r16 = @ltoff(@dtpmod(foo#)), gp
2349 addl r17 = @ltoff(@dtprel(foo#)), gp
2350 addl r18 = @ltoff(@tprel(foo#)), gp
2351 addl r19 = @dtprel(foo#), gp
2352 adds r21 = @dtprel(foo#), r13
2353 movl r23 = @dtprel(foo#)
2354 addl r20 = @tprel(foo#), gp
2355 adds r22 = @tprel(foo#), r13
2356 movl r24 = @tprel(foo#)'
2359 tls_as_opt=--fatal-warnings
2363 .section .tdata,"awT",@progbits
2367 addiu $4, $28, %tlsgd(x)
2368 addiu $4, $28, %tlsldm(x)
2369 lui $4, %dtprel_hi(x)
2370 addiu $4, $4, %dtprel_lo(x)
2371 lw $4, %gottprel(x)($28)
2372 lui $4, %tprel_hi(x)
2373 addiu $4, $4, %tprel_lo(x)'
2376 tls_as_opt='-32 --fatal-warnings'
2380 .section ".tdata","awT",@progbits
2388 addi 3,31,ld0@got@tlsgd
2390 addi 3,31,x1@got@tlsld
2393 addis 9,3,x2@dtprel@ha
2394 addi 9,9,x2@dtprel@l
2395 lwz 9,x3@got@tprel(31)
2398 addis 9,2,x2@tprel@ha
2399 addi 9,9,x2@tprel@l'
2402 tls_as_opt="-a32 --fatal-warnings"
2406 .section ".tdata","awT",@progbits
2414 addi 3,2,ld0@got@tlsgd
2420 addi 3,2,x1@got@tlsld
2426 addis 9,3,x2@dtprel@ha
2427 addi 9,9,x2@dtprel@l
2430 ld 9,x3@got@dtprel(2)
2436 tls_as_opt="-a64 --fatal-warnings"
2440 .section ".tdata","awT",@progbits
2449 l %r1,foo@GOTNTPOFF(%r12)
2450 l %r1,0(%r1):tls_load:foo
2451 bas %r14,0(%r1,%r13):tls_gdcall:foo
2452 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2455 tls_as_opt="-m31 --fatal-warnings"
2459 .section ".tdata","awT",@progbits
2467 lg %r1,foo@GOTNTPOFF(%r12)
2468 larl %r1,foo@INDNTPOFF
2469 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2470 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2473 tls_as_opt="-m64 -Aesame --fatal-warnings"
2475 sh-*-* | sh[34]-*-*)
2477 .section ".tdata","awT",@progbits
2487 tls_as_opt=--fatal-warnings
2491 sparc*-sun-solaris2.*)
2498 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2500 .section ".tdata",#alloc,#write,#tls
2503 sethi %tgd_hi22(foo), %o0
2504 add %o0, %tgd_lo10(foo), %o1
2505 add %l7, %o1, %o0, %tgd_add(foo)
2506 call __tls_get_addr, %tgd_call(foo)
2507 sethi %tldm_hi22(foo), %l1
2508 add %l1, %tldm_lo10(foo), %l2
2509 add %l7, %l2, %o0, %tldm_add(foo)
2510 call __tls_get_addr, %tldm_call(foo)
2511 sethi %tldo_hix22(foo), %l3
2512 xor %l3, %tldo_lox10(foo), %l4
2513 add %o0, %l4, %l5, %tldo_add(foo)
2514 sethi %tie_hi22(foo), %o3
2515 add %o3, %tie_lo10(foo), %o3
2516 ld [%l7 + %o3], %o2, %tie_ld(foo)
2517 add %g7, %o2, %o4, %tie_add(foo)
2518 sethi %tle_hix22(foo), %l1
2519 xor %l1, %tle_lox10(foo), %o5
2520 ld [%g7 + %o5], %o1'
2525 .section ".tdata","awT",@progbits
2528 sethi %tgd_hi22(foo), %o0
2529 add %o0, %tgd_lo10(foo), %o1
2530 add %l7, %o1, %o0, %tgd_add(foo)
2531 call __tls_get_addr, %tgd_call(foo)
2532 sethi %tldm_hi22(foo), %l1
2533 add %l1, %tldm_lo10(foo), %l2
2534 add %l7, %l2, %o0, %tldm_add(foo)
2535 call __tls_get_addr, %tldm_call(foo)
2536 sethi %tldo_hix22(foo), %l3
2537 xor %l3, %tldo_lox10(foo), %l4
2538 add %o0, %l4, %l5, %tldo_add(foo)
2539 sethi %tie_hi22(foo), %o3
2540 add %o3, %tie_lo10(foo), %o3
2541 ld [%l7 + %o3], %o2, %tie_ld(foo)
2542 add %g7, %o2, %o4, %tie_add(foo)
2543 sethi %tle_hix22(foo), %l1
2544 xor %l1, %tle_lox10(foo), %o5
2545 ld [%g7 + %o5], %o1'
2548 tls_as_opt="-32 --fatal-warnings"
2553 if test -z "$tls_first_major"; then
2554 : # If we don't have a check, assume no support.
2556 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2557 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2558 [AC_DEFINE(HAVE_AS_TLS, 1,
2559 [Define if your assembler supports thread-local storage.])])
2562 # Target-specific assembler checks.
2564 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2565 gcc_cv_ld_static_dynamic=no
2566 if test $in_tree_ld = yes ; then
2567 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2568 gcc_cv_ld_static_dynamic=yes
2570 elif test x$gcc_cv_ld != x; then
2571 # Check if linker supports -Bstatic/-Bdynamic option
2572 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2573 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2574 gcc_cv_ld_static_dynamic=yes
2577 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2578 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2579 [Define if your linker supports -Bstatic/-Bdynamic option.])
2581 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2583 if test x"$demangler_in_ld" = xyes; then
2584 AC_MSG_CHECKING(linker --demangle support)
2585 gcc_cv_ld_demangle=no
2586 if test $in_tree_ld = yes; then
2587 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2588 gcc_cv_ld_demangle=yes
2590 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2591 # Check if the GNU linker supports --demangle option
2592 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2593 gcc_cv_ld_demangle=yes
2596 if test x"$gcc_cv_ld_demangle" = xyes; then
2597 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2598 [Define if your linker supports --demangle option.])
2600 AC_MSG_RESULT($gcc_cv_ld_demangle)
2604 # All TARGET_ABI_OSF targets.
2605 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2606 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2607 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2610 extbl $3, $2, $3 !lituse_bytoff!1
2611 ldq $2, a($29) !literal!1
2612 ldq $4, b($29) !literal!2
2613 ldq_u $3, 0($2) !lituse_base!1
2614 ldq $27, f($29) !literal!5
2615 jsr $26, ($27), f !lituse_jsr!5
2616 ldah $29, 0($26) !gpdisp!3
2617 lda $0, c($29) !gprel
2618 ldah $1, d($29) !gprelhigh
2619 lda $1, d($1) !gprellow
2620 lda $29, 0($29) !gpdisp!3],,
2621 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2622 [Define if your assembler supports explicit relocations.])])
2626 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2627 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2628 [-no-mul-bug-abort], [.text],,
2629 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2630 [Define if your assembler supports the -no-mul-bug-abort option.])])
2634 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2635 [.register %g2, #scratch],,
2636 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2637 [Define if your assembler supports .register.])])
2639 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2641 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2642 [Define if your assembler supports -relax option.])])
2644 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2645 gcc_cv_as_sparc_ua_pcrel,,
2653 .uaword %r_disp32(foo)],
2654 [if test x$gcc_cv_ld != x \
2655 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2656 gcc_cv_as_sparc_ua_pcrel=yes
2659 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2660 [Define if your assembler and linker support unaligned PC relative relocs.])
2662 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2663 gcc_cv_as_sparc_ua_pcrel_hidden,,
2668 .uaword %r_disp32(foo)
2669 .byte 0x32, 0x33, 0x34
2674 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2675 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2676 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2677 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2678 if $gcc_cv_objdump -R conftest 2> /dev/null \
2679 | grep 'DISP32' > /dev/null 2>&1; then
2682 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2686 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2687 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2688 ]) # unaligned pcrel relocs
2690 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2691 gcc_cv_as_sparc_offsetable_lo10,,
2694 or %g1, %lo(ab) + 12, %g1
2695 or %g1, %lo(ab + 12), %g1],
2696 [if test x$gcc_cv_objdump != x \
2697 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2698 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2699 gcc_cv_as_sparc_offsetable_lo10=yes
2701 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2702 [Define if your assembler supports offsetable %lo().])])
2706 i[34567]86-*-* | x86_64-*-*)
2709 cygwin* | pe | mingw32*)
2710 # Used for DWARF 2 in PE
2711 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2712 gcc_cv_as_ix86_pe_secrel32,
2718 [if test x$gcc_cv_ld != x \
2719 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2720 gcc_cv_as_ix86_pe_secrel32=yes
2723 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2724 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2728 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2729 gcc_cv_as_ix86_filds_fists,
2730 [2,9,0],, [filds mem; fists mem],,
2731 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2732 [Define if your assembler uses the new HImode fild and fist notation.])])
2734 gcc_GAS_CHECK_FEATURE([cmov syntax],
2735 gcc_cv_as_ix86_cmov_sun_syntax,,,
2736 [cmovl.l %edx, %eax],,
2737 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2738 [Define if your assembler supports the Sun syntax for cmov.])])
2740 # This one is used unconditionally by i386.[ch]; it is to be defined
2741 # to 1 if the feature is present, 0 otherwise.
2742 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2743 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2749 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2750 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2751 [Define true if the assembler supports '.long foo@GOTOFF'.])
2755 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2756 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2758 addl r15 = @ltoffx(x#), gp
2760 ld8.mov r16 = [[r15]], x#],,
2761 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2762 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2768 *-*-aix*) conftest_s=' .csect .text[[PR]]
2771 gcc_GAS_CHECK_FEATURE([.machine directive support],
2772 gcc_cv_as_machine_directive,,,
2773 [ .machine ppc7400])
2774 if test x$gcc_cv_as_machine_directive != xyes; then
2775 echo "*** This target requires an assembler supporting \".machine\"" >&2
2776 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2777 test x$build = x$target && exit 1
2781 *) conftest_s=' .machine power4
2786 gcc_GAS_CHECK_FEATURE([mfcr field support],
2787 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2789 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2790 [Define if your assembler supports mfcr field.])])
2794 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2795 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2796 [ lw $4,%gp_rel(foo)($4)],,
2797 [if test x$target_cpu_default = x
2798 then target_cpu_default=MASK_EXPLICIT_RELOCS
2799 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2802 if test x$gas_flag = xyes \
2803 || test x"$host" != x"$build" \
2804 || test ! -x "$gcc_cv_as" \
2805 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2808 echo "*** This configuration requires the GNU assembler" >&2
2813 # ??? Not all targets support dwarf2 debug_line, even within a version
2814 # of gas. Moreover, we need to emit a valid instruction to trigger any
2815 # info to the output file. So, as supported targets are added to gas 2.11,
2816 # add some instruction here to (also) show we expect this might work.
2817 # ??? Once 2.11 is released, probably need to add first known working
2818 # version to the per-target configury.
2820 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2821 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2822 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2825 ia64*-*-* | s390*-*-*)
2832 if test x"$insn" != x; then
2834 .file 1 \"conftest.s\"
2837 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2838 gcc_cv_as_dwarf2_debug_line,
2839 [elf,2,11,0],, [$conftest_s],
2840 [if test x$gcc_cv_objdump != x \
2841 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2842 | grep debug_line > /dev/null 2>&1; then
2843 gcc_cv_as_dwarf2_debug_line=yes
2846 # The .debug_line file table must be in the exact order that
2847 # we specified the files, since these indices are also used
2848 # by DW_AT_decl_file. Approximate this test by testing if
2849 # the assembler bitches if the same index is assigned twice.
2850 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2851 gcc_cv_as_dwarf2_file_buggy,,,
2855 if test $gcc_cv_as_dwarf2_debug_line = yes \
2856 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2857 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2858 [Define if your assembler supports dwarf2 .file/.loc directives,
2859 and preserves file table indices exactly as given.])
2862 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2863 gcc_cv_as_gdwarf2_flag,
2864 [elf,2,11,0], [--gdwarf2], [$insn],,
2865 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2866 [Define if your assembler supports the --gdwarf2 option.])])
2868 gcc_GAS_CHECK_FEATURE([--gstabs option],
2869 gcc_cv_as_gstabs_flag,
2870 [elf,2,11,0], [--gstabs], [$insn],
2871 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2872 # and warns about it, but still exits successfully. So check for
2874 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2876 else gcc_cv_as_gstabs_flag=yes
2878 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2879 [Define if your assembler supports the --gstabs option.])])
2882 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2883 gcc_cv_ld_ro_rw_mix=unknown
2884 if test $in_tree_ld = yes ; then
2885 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2886 && test $in_tree_ld_is_elf = yes; then
2887 gcc_cv_ld_ro_rw_mix=read-write
2889 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2890 echo '.section myfoosect, "a"' > conftest1.s
2891 echo '.section myfoosect, "aw"' > conftest2.s
2892 echo '.byte 1' >> conftest2.s
2893 echo '.section myfoosect, "a"' > conftest3.s
2894 echo '.byte 0' >> conftest3.s
2895 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2896 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2897 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2898 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2899 conftest2.o conftest3.o > /dev/null 2>&1; then
2900 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2901 | sed -e '/myfoosect/!d' -e N`
2902 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2903 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2904 gcc_cv_ld_ro_rw_mix=read-only
2906 gcc_cv_ld_ro_rw_mix=read-write
2911 rm -f conftest.* conftest[123].*
2914 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2915 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2916 [Define if your linker links a mix of read-only
2917 and read-write sections into a read-write section.])
2919 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2921 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2922 gcc_cv_ld_eh_frame_hdr=no
2923 if test $in_tree_ld = yes ; then
2924 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2925 && test $in_tree_ld_is_elf = yes; then
2926 gcc_cv_ld_eh_frame_hdr=yes
2928 elif test x$gcc_cv_ld != x; then
2929 # Check if linker supports --eh-frame-hdr option
2930 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2931 gcc_cv_ld_eh_frame_hdr=yes
2934 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2935 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2936 [Define if your linker supports --eh-frame-hdr option.])
2938 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2940 AC_MSG_CHECKING(linker position independent executable support)
2942 if test $in_tree_ld = yes ; then
2943 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2944 && test $in_tree_ld_is_elf = yes; then
2947 elif test x$gcc_cv_ld != x; then
2948 # Check if linker supports -pie option
2949 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2953 if test x"$gcc_cv_ld_pie" = xyes; then
2954 AC_DEFINE(HAVE_LD_PIE, 1,
2955 [Define if your linker supports -pie option.])
2957 AC_MSG_RESULT($gcc_cv_ld_pie)
2963 AC_CACHE_CHECK(linker --as-needed support,
2964 gcc_cv_ld_as_needed,
2965 [gcc_cv_ld_as_needed=no
2966 if test $in_tree_ld = yes ; then
2967 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2968 && test $in_tree_ld_is_elf = yes; then
2969 gcc_cv_ld_as_needed=yes
2971 elif test x$gcc_cv_ld != x; then
2972 # Check if linker supports --as-needed and --no-as-needed options
2973 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2974 gcc_cv_ld_as_needed=yes
2978 if test x"$gcc_cv_ld_as_needed" = xyes; then
2979 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2980 [Define if your linker supports --as-needed and --no-as-needed options.])
2984 powerpc64*-*-linux*)
2985 AC_CACHE_CHECK(linker support for omitting dot symbols,
2986 gcc_cv_ld_no_dot_syms,
2987 [gcc_cv_ld_no_dot_syms=no
2988 if test $in_tree_ld = yes ; then
2989 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2990 gcc_cv_ld_no_dot_syms=yes
2992 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2993 cat > conftest1.s <<EOF
2997 cat > conftest2.s <<EOF
2998 .section ".opd","aw"
3003 .quad .LEfoo,.TOC.@tocbase,0
3009 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3010 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3011 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3012 gcc_cv_ld_no_dot_syms=yes
3014 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3017 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3018 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3019 [Define if your PowerPC64 linker only needs function descriptor syms.])
3024 if test x$with_sysroot = x && test x$host = x$target \
3025 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
3026 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3027 [Define to PREFIX/include if cpp should also search that directory.])
3030 # Find out what GC implementation we want, or may, use.
3032 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3040 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3043 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3048 echo "Using $GGC for garbage collection."
3050 # Use the system's zlib library.
3052 zlibinc="-I\$(srcdir)/../zlib"
3053 AC_ARG_WITH(system-zlib,
3054 [ --with-system-zlib use installed libz],
3061 dnl Very limited version of automake's enable-maintainer-mode
3063 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3064 dnl maintainer-mode is disabled by default
3065 AC_ARG_ENABLE(maintainer-mode,
3066 [ --enable-maintainer-mode
3067 enable make rules and dependencies not useful
3068 (and sometimes confusing) to the casual installer],
3069 maintainer_mode=$enableval,
3072 AC_MSG_RESULT($maintainer_mode)
3074 if test "$maintainer_mode" = "yes"; then
3085 # Make empty files to contain the specs and options for each language.
3086 # Then add #include lines to for a compiler that has specs and/or options.
3091 for subdir in . $subdirs
3093 if test -f $srcdir/$subdir/lang.opt; then
3094 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3096 if test -f $srcdir/$subdir/lang-specs.h; then
3097 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3099 if test -f $srcdir/$subdir/$subdir-tree.def; then
3100 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3104 # These (without "all_") are set in each config-lang.in.
3105 # `language' must be a single word so is spelled singularly.
3110 all_outputs='Makefile gccbug mklibgcc libada-mk'
3111 # List of language makefile fragments.
3113 # List of language subdirectory makefiles. Deprecated.
3115 # Files for gengtype
3116 all_gtfiles="$target_gtfiles"
3117 # Files for gengtype with language
3118 all_gtfiles_files_langs=
3119 all_gtfiles_files_files=
3121 # Add the language fragments.
3122 # Languages are added via two mechanisms. Some information must be
3123 # recorded in makefile variables, these are defined in config-lang.in.
3124 # We accumulate them and plug them into the main Makefile.
3125 # The other mechanism is a set of hooks for each of the main targets
3126 # like `clean', `install', etc.
3128 language_hooks="Make-hooks"
3138 . ${srcdir}/$s/config-lang.in
3139 if test "x$language" = x
3141 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3144 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3145 if test -f ${srcdir}/$s/Makefile.in
3146 then all_lang_makefiles="$s/Makefile"
3148 all_languages="$all_languages $language"
3149 if test "x$boot_language" = xyes
3151 all_boot_languages="$all_boot_languages $language"
3153 all_compilers="$all_compilers $compilers"
3154 all_stagestuff="$all_stagestuff $stagestuff"
3155 all_outputs="$all_outputs $outputs"
3156 all_gtfiles="$all_gtfiles $gtfiles"
3159 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3160 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3164 # Pick up gtfiles for c
3167 . ${srcdir}/c-config-lang.in
3168 all_gtfiles="$all_gtfiles $gtfiles"
3171 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3172 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3176 for language in $all_languages
3178 check_languages="$check_languages check-$language"
3181 # We link each language in with a set of hooks, reached indirectly via
3186 target_list="all.build all.cross start.encap rest.encap tags \
3187 install-normal install-common install-man \
3188 uninstall info man srcextra srcman srcinfo \
3189 mostlyclean clean distclean maintainer-clean \
3190 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3191 for t in $target_list
3194 for lang in $all_languages
3198 echo "lang.$t: $x" >> Make-hooks
3207 echo "dir ." > .gdbinit
3208 echo "dir ${srcdir}" >> .gdbinit
3209 if test x$gdb_needs_out_file_path = xyes
3211 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3213 if test "x$subdirs" != x; then
3216 echo "dir ${srcdir}/$s" >> .gdbinit
3219 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3221 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3222 # absolute path for gcc_tooldir based on inserting the number of up-directory
3223 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3224 # $(libsubdir)/@(unlibsubdir) based path.
3225 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3226 # make and thus we'd get different behavior depending on where we built the
3228 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3229 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3231 changequote(<<, >>)dnl
3232 # An explanation of the sed strings:
3233 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3234 # -e 's|/$||' match a trailing forward slash and eliminates it
3235 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3236 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3238 # (*) Note this pattern overwrites the first character of the string
3239 # with a forward slash if one is not already present. This is not a
3240 # problem because the exact names of the sub-directories concerned is
3241 # unimportant, just the number of them matters.
3243 # The practical upshot of these patterns is like this:
3245 # prefix exec_prefix result
3246 # ------ ----------- ------
3248 # /foo/ /foo/bar ../
3249 # /foo /foo/bar/ ../
3250 # /foo/ /foo/bar/ ../
3251 # /foo /foo/bar/ugg ../../
3254 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3255 changequote([, ])dnl
3257 AC_SUBST(gcc_tooldir)
3260 # Find a directory in which to install a shared libgcc.
3262 AC_ARG_ENABLE(version-specific-runtime-libs,
3263 [ --enable-version-specific-runtime-libs
3264 specify that runtime libraries should be
3265 installed in a compiler-specific directory])
3267 AC_ARG_WITH(slibdir,
3268 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3269 slibdir="$with_slibdir",
3270 if test "${enable_version_specific_runtime_libs+set}" = set; then
3271 slibdir='$(libsubdir)'
3272 elif test "$host" != "$target"; then
3273 slibdir='$(build_tooldir)/lib'
3279 objdir=`${PWDCMD-pwd}`
3282 # Substitute configuration variables
3285 AC_SUBST(all_boot_languages)
3286 AC_SUBST(all_compilers)
3287 AC_SUBST(all_gtfiles)
3288 AC_SUBST(all_gtfiles_files_langs)
3289 AC_SUBST(all_gtfiles_files_files)
3290 AC_SUBST(all_lang_makefrags)
3291 AC_SUBST(all_lang_makefiles)
3292 AC_SUBST(all_languages)
3293 AC_SUBST(all_stagestuff)
3294 AC_SUBST(build_exeext)
3295 AC_SUBST(build_install_headers_dir)
3296 AC_SUBST(build_xm_file_list)
3297 AC_SUBST(build_xm_include_list)
3298 AC_SUBST(build_xm_defines)
3299 AC_SUBST(check_languages)
3300 AC_SUBST(cc_set_by_configure)
3301 AC_SUBST(quoted_cc_set_by_configure)
3302 AC_SUBST(cpp_install_dir)
3303 AC_SUBST(xmake_file)
3304 AC_SUBST(tmake_file)
3305 AC_SUBST(extra_gcc_objs)
3306 AC_SUBST(extra_headers_list)
3307 AC_SUBST(extra_objs)
3308 AC_SUBST(extra_parts)
3309 AC_SUBST(extra_passes)
3310 AC_SUBST(extra_programs)
3311 AC_SUBST(float_h_file)
3312 AC_SUBST(gcc_config_arguments)
3313 AC_SUBST(gcc_gxx_include_dir)
3314 AC_SUBST(libstdcxx_incdir)
3315 AC_SUBST(host_exeext)
3316 AC_SUBST(host_xm_file_list)
3317 AC_SUBST(host_xm_include_list)
3318 AC_SUBST(host_xm_defines)
3319 AC_SUBST(out_host_hook_obj)
3321 AC_SUBST(lang_opt_files)
3322 AC_SUBST(lang_specs_files)
3323 AC_SUBST(lang_tree_files)
3324 AC_SUBST(local_prefix)
3326 AC_SUBST(objc_boehm_gc)
3328 AC_SUBST(out_object_file)
3329 AC_SUBST(stage_prefix_set_by_configure)
3330 AC_SUBST(quoted_stage_prefix_set_by_configure)
3331 AC_SUBST(thread_file)
3332 AC_SUBST(tm_file_list)
3333 AC_SUBST(tm_include_list)
3334 AC_SUBST(tm_defines)
3335 AC_SUBST(tm_p_file_list)
3336 AC_SUBST(tm_p_include_list)
3337 AC_SUBST(xm_file_list)
3338 AC_SUBST(xm_include_list)
3339 AC_SUBST(xm_defines)
3340 AC_SUBST(c_target_objs)
3341 AC_SUBST(cxx_target_objs)
3342 AC_SUBST(target_cpu_default)
3344 AC_SUBST_FILE(language_hooks)
3347 if test x${build} = x${host} ; then
3348 if test x${host} = x${target} ; then
3349 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3351 echo "Links are now set up to build a cross-compiler" 1>&2
3352 echo " from ${host} to ${target}." 1>&2
3355 if test x${host} = x${target} ; then
3356 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3357 echo " for ${target}." 1>&2
3359 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3360 echo " from ${host} to ${target}." 1>&2
3364 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3365 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3367 # Configure the subdirectories
3368 # AC_CONFIG_SUBDIRS($subdirs)
3370 # Create the Makefile
3371 # and configure language subdirectories
3372 AC_CONFIG_FILES($all_outputs)
3374 AC_CONFIG_COMMANDS([default],
3376 case ${CONFIG_HEADERS} in
3377 *auto-host.h:config.in*)
3380 # Make sure all the subdirs exist.
3381 for d in $subdirs doc build
3383 test -d $d || mkdir $d
3385 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3386 # bootstrapping and the installation procedure can still use
3387 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3388 # FLAGS_TO_PASS has been modified to solve the problem there.
3389 # This is virtually a duplicate of what happens in configure.lang; we do
3390 # an extra check to make sure this only happens if ln -s can be used.
3393 for d in ${subdirs} ; do
3394 STARTDIR=`${PWDCMD-pwd}`
3396 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3399 $LN_S ../$t $t 2>/dev/null
3406 [subdirs='$subdirs'])