2 # Process this file with autoconf to generate a configuration script.
4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
5 # Free Software Foundation, Inc.
7 #This file is part of GCC.
9 #GCC is free software; you can redistribute it and/or modify it under
10 #the terms of the GNU General Public License as published by the Free
11 #Software Foundation; either version 2, or (at your option) any later
14 #GCC is distributed in the hope that it will be useful, but WITHOUT
15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 #You should have received a copy of the GNU General Public License
20 #along with GCC; see the file COPYING. If not, write to the Free
21 #Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 #Set to 1 on a release branch
36 # Determine the host, build, and target systems
41 # Determine the noncanonical target name, for directory use.
42 ACX_NONCANONICAL_TARGET
44 # Determine the target- and build-specific subdirectories
47 # Set program_transform_name
50 # Check for bogus environment variables.
51 # Test if LIBRARY_PATH contains the notation for the current directory
52 # since this would lead to problems installing/building glibc.
53 # LIBRARY_PATH contains the current directory if one of the following
55 # - one of the terminals (":" and ";") is the first or last sign
56 # - two terminals occur directly after each other
57 # - the path contains an element with a dot in it
58 AC_MSG_CHECKING(LIBRARY_PATH variable)
60 case ${LIBRARY_PATH} in
61 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
62 library_path_setting="contains current directory"
65 library_path_setting="ok"
69 AC_MSG_RESULT($library_path_setting)
70 if test "$library_path_setting" != "ok"; then
72 *** LIBRARY_PATH shouldn't contain the current directory when
73 *** building gcc. Please change the environment variable
74 *** and run configure again.])
77 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
78 # since this would lead to problems installing/building glibc.
79 # GCC_EXEC_PREFIX contains the current directory if one of the following
81 # - one of the terminals (":" and ";") is the first or last sign
82 # - two terminals occur directly after each other
83 # - the path contains an element with a dot in it
84 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
86 case ${GCC_EXEC_PREFIX} in
87 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
88 gcc_exec_prefix_setting="contains current directory"
91 gcc_exec_prefix_setting="ok"
95 AC_MSG_RESULT($gcc_exec_prefix_setting)
96 if test "$gcc_exec_prefix_setting" != "ok"; then
98 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
99 *** building gcc. Please change the environment variable
100 *** and run configure again.])
107 # Specify the local prefix
109 AC_ARG_WITH(local-prefix,
110 [ --with-local-prefix=DIR specifies directory to put local include],
111 [case "${withval}" in
112 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
114 *) local_prefix=$with_local_prefix ;;
117 # Default local prefix if it is empty
118 if test x$local_prefix = x; then
119 local_prefix=/usr/local
122 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
123 # passed in by the toplevel make and thus we'd get different behavior
124 # depending on where we built the sources.
126 # Specify the g++ header file directory
127 AC_ARG_WITH(gxx-include-dir,
128 [ --with-gxx-include-dir=DIR
129 specifies directory to put g++ header files],
130 [case "${withval}" in
131 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
133 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
136 if test x${gcc_gxx_include_dir} = x; then
137 if test x${enable_version_specific_runtime_libs} = xyes; then
138 gcc_gxx_include_dir='${libsubdir}/include/c++'
140 topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
141 changequote(<<, >>)dnl
142 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
147 AC_ARG_WITH(cpp_install_dir,
148 [ --with-cpp-install-dir=DIR
149 install the user visible C preprocessor in DIR
150 (relative to PREFIX) as well as PREFIX/bin],
151 [if test x$withval = xyes; then
152 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
153 elif test x$withval != xno; then
154 cpp_install_dir=$withval
157 # We would like to our source tree to be readonly. However when releases or
158 # pre-releases are generated, the flex/bison generated files as well as the
159 # various formats of manuals need to be included along with the rest of the
160 # sources. Therefore we have --enable-generated-files-in-srcdir to do
163 AC_MSG_CHECKING([whether to place generated files in the source directory])
164 dnl generated-files-in-srcdir is disabled by default
165 AC_ARG_ENABLE(generated-files-in-srcdir,
166 [ --enable-generated-files-in-srcdir
167 put copies of generated files in source dir
168 intended for creating source tarballs for users
169 without texinfo bison or flex.],
170 generated_files_in_srcdir=$enableval,
171 generated_files_in_srcdir=no)
173 AC_MSG_RESULT($generated_files_in_srcdir)
175 if test "$generated_files_in_srcdir" = "yes"; then
182 # -------------------
183 # Find default linker
184 # -------------------
188 [ --with-gnu-ld arrange to work with GNU ld.],
189 gnu_ld_flag="$with_gnu_ld",
192 # With pre-defined ld
194 [ --with-ld arrange to use the specified ld (full pathname)],
195 DEFAULT_LINKER="$with_ld")
196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
197 if test ! -x "$DEFAULT_LINKER"; then
198 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
199 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
202 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
203 [Define to enable the use of a default linker.])
206 AC_MSG_CHECKING([whether a default linker was specified])
207 if test x"${DEFAULT_LINKER+set}" = x"set"; then
208 if test x"$gnu_ld_flag" = x"no"; then
209 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
211 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
217 # With demangler in GNU ld
218 AC_ARG_WITH(demangler-in-ld,
219 [ --with-demangler-in-ld try to use demangler in GNU ld.],
220 demangler_in_ld="$with_demangler_in_ld",
223 # ----------------------
224 # Find default assembler
225 # ----------------------
229 [ --with-gnu-as arrange to work with GNU as],
230 gas_flag="$with_gnu_as",
234 [ --with-as arrange to use the specified as (full pathname)],
235 DEFAULT_ASSEMBLER="$with_as")
236 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
237 if test ! -x "$DEFAULT_ASSEMBLER"; then
238 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
239 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
242 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
243 [Define to enable the use of a default assembler.])
246 AC_MSG_CHECKING([whether a default assembler was specified])
247 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
248 if test x"$gas_flag" = x"no"; then
249 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
251 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
261 # If a non-executable a.out is present (e.g. created by GNU as above even if
262 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
263 # file, even when creating an executable, so an execution test fails.
264 # Remove possible default executable files to avoid this.
266 # FIXME: This really belongs into AC_PROG_CC and can be removed once
267 # Autoconf includes it.
268 rm -f a.out a.exe b.out
270 # Find the native compiler
273 # autoconf is lame and doesn't give us any substitution variable for this.
274 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
275 NO_MINUS_C_MINUS_O=yes
277 OUTPUT_OPTION='-o $@'
279 AC_SUBST(NO_MINUS_C_MINUS_O)
280 AC_SUBST(OUTPUT_OPTION)
282 # -------------------------
283 # Check C compiler features
284 # -------------------------
291 # sizeof(char) is 1 by definition.
292 AC_COMPILE_CHECK_SIZEOF(void *)
293 AC_COMPILE_CHECK_SIZEOF(short)
294 AC_COMPILE_CHECK_SIZEOF(int)
295 AC_COMPILE_CHECK_SIZEOF(long)
296 if test $ac_cv_c_long_long = yes; then
297 AC_COMPILE_CHECK_SIZEOF(long long)
299 if test $ac_cv_c___int64 = yes; then
300 AC_COMPILE_CHECK_SIZEOF(__int64)
303 # ---------------------
304 # Warnings and checking
305 # ---------------------
307 # Check $CC warning features (if it's GCC).
308 # We want to use -pedantic, but we don't want warnings about
311 # So, we only use -pedantic if we can disable those warnings.
314 [whether ${CC} accepts -Wno-long-long],
315 [ac_cv_prog_cc_w_no_long_long],
316 [save_CFLAGS="$CFLAGS"
317 CFLAGS="-Wno-long-long"
318 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
319 [ac_cv_prog_cc_w_no_long_long=yes],
320 [ac_cv_prog_cc_w_no_long_long=no])
321 CFLAGS="$save_CFLAGS"
325 [whether ${CC} accepts -Wno-variadic-macros],
326 [ac_cv_prog_cc_w_no_variadic_macros],
327 [save_CFLAGS="$CFLAGS"
328 CFLAGS="-Wno-variadic-macros"
329 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
330 [ac_cv_prog_cc_w_no_variadic_macros=yes],
331 [ac_cv_prog_cc_w_no_variadic_macros=no])
332 CFLAGS="$save_CFLAGS"
336 if test $ac_cv_prog_cc_w_no_long_long = yes \
337 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
338 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
340 AC_SUBST(strict1_warn)
342 # Add -Wold-style-definition if it's accepted
344 [whether ${CC} accepts -Wold-style-definition],
345 [ac_cv_prog_cc_w_old_style_definition],
346 [save_CFLAGS="$CFLAGS"
347 CFLAGS="-Wold-style-definition"
348 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
349 [ac_cv_prog_cc_w_old_style_definition=yes],
350 [ac_cv_prog_cc_w_old_style_definition=no])
351 CFLAGS="$save_CFLAGS"
353 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
354 strict1_warn="${strict1_warn} -Wold-style-definition"
357 # Enable -Werror, period.
358 AC_ARG_ENABLE(werror_always,
359 [ --enable-werror-always enable -Werror always], [],
360 [enable_werror_always=no])
361 if test x${enable_werror_always} = xyes ; then
362 strict1_warn="${strict1_warn} -Werror"
366 # If the native compiler is GCC, we can enable warnings even in stage1.
367 # That's useful for people building cross-compilers, or just running a
370 if test "x$GCC" = "xyes"; then
371 warn_cflags='$(GCC_WARN_CFLAGS)'
373 AC_SUBST(warn_cflags)
375 # Enable -Werror in bootstrap stage2 and later.
376 AC_ARG_ENABLE(werror,
377 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
378 [if test x$is_release = x ; then
379 # Default to "yes" on development branches.
382 # Default to "no" on release branches.
385 if test x$enable_werror = xyes ; then
390 # Enable expensive internal checks
391 AC_ARG_ENABLE(checking,
392 [ --enable-checking[=LIST]
393 enable expensive run-time checks. With LIST,
394 enable only specific categories of checks.
395 Categories are: assert,fold,gc,gcac,misc,
396 rtlflag,rtl,tree,valgrind,release,yes,all;],
397 [ac_checking_flags="${enableval}"],[
398 # Determine the default checks.
399 if test x$is_release = x ; then
400 ac_checking_flags=yes
402 ac_checking_flags=release
410 ac_gc_always_collect=
412 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
413 for check in $ac_checking_flags
416 yes) ac_assert_checking=1 ; ac_checking=1 ;
417 ac_tree_checking=1 ; ac_gc_checking=1 ;
418 ac_rtlflag_checking=1 ;;
419 no) ac_assert_checking= ; ac_checking= ;
420 ac_tree_checking= ; ac_rtl_checking= ;
421 ac_rtlflag_checking= ; ac_gc_checking= ;
422 ac_gc_always_collect= ; ac_fold_checking= ;;
423 all) ac_assert_checking=1 ; ac_checking=1 ;
424 ac_tree_checking=1 ; ac_rtl_checking=1 ;
425 ac_rtlflag_checking=1 ; ac_gc_checking=1 ;
426 ac_gc_always_collect=1 ; ac_fold_checking=1 ;;
427 release) ac_assert_checking=1 ;;
428 assert) ac_assert_checking=1 ;;
429 fold) ac_fold_checking=1 ;;
430 gc) ac_gc_checking=1 ;;
431 gcac) ac_gc_always_collect=1 ;;
432 misc) ac_checking=1 ;;
433 rtlflag) ac_rtlflag_checking=1 ;;
434 rtl) ac_rtl_checking=1 ;;
435 tree) ac_tree_checking=1 ;;
436 valgrind) ac_checking_valgrind=1 ;;
437 *) AC_MSG_ERROR(unknown check category $check) ;;
443 if test x$ac_checking != x ; then
444 AC_DEFINE(ENABLE_CHECKING, 1,
445 [Define if you want more run-time sanity checks. This one gets a grab
446 bag of miscellaneous but relatively cheap checks.])
447 nocommon_flag=-fno-common
449 AC_SUBST(nocommon_flag)
450 if test x$ac_assert_checking != x ; then
451 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
452 [Define if you want assertions enabled. This is a cheap check.])
454 if test x$ac_tree_checking != x ; then
455 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
456 [Define if you want all operations on trees (the basic data
457 structure of the front ends) to be checked for dynamic type safety
458 at runtime. This is moderately expensive. The tree browser debugging
459 routines will also be enabled by this option.
461 TREEBROWSER=tree-browser.o
463 AC_SUBST(TREEBROWSER)
464 if test x$ac_rtl_checking != x ; then
465 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
466 [Define if you want all operations on RTL (the basic data structure
467 of the optimizer and back end) to be checked for dynamic type safety
468 at runtime. This is quite expensive.])
470 if test x$ac_rtlflag_checking != x ; then
471 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
472 [Define if you want RTL flag accesses to be checked against the RTL
473 codes that are supported for each access macro. This is relatively
476 if test x$ac_gc_checking != x ; then
477 AC_DEFINE(ENABLE_GC_CHECKING, 1,
478 [Define if you want the garbage collector to do object poisoning and
479 other memory allocation checks. This is quite expensive.])
481 if test x$ac_gc_always_collect != x ; then
482 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
483 [Define if you want the garbage collector to operate in maximally
484 paranoid mode, validating the entire heap and collecting garbage at
485 every opportunity. This is extremely expensive.])
487 if test x$ac_fold_checking != x ; then
488 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
489 [Define if you want fold checked that it never destructs its argument.
490 This is quite expensive.])
492 valgrind_path_defines=
495 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
496 dnl # an if statement. This was the source of very frustrating bugs
497 dnl # in converting to autoconf 2.5x!
498 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
500 if test x$ac_checking_valgrind != x ; then
501 # It is certainly possible that there's valgrind but no valgrind.h.
502 # GCC relies on making annotations so we must have both.
503 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
505 [#include <valgrind/memcheck.h>
506 #ifndef VALGRIND_DISCARD
507 #error VALGRIND_DISCARD not defined
509 [gcc_cv_header_valgrind_memcheck_h=yes],
510 [gcc_cv_header_valgrind_memcheck_h=no])
511 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
512 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
514 [#include <memcheck.h>
515 #ifndef VALGRIND_DISCARD
516 #error VALGRIND_DISCARD not defined
518 [gcc_cv_header_memcheck_h=yes],
519 gcc_cv_header_memcheck_h=no)
520 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
521 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
522 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
523 if test "x$valgrind_path" = "x" \
524 || (test $have_valgrind_h = no \
525 && test $gcc_cv_header_memcheck_h = no \
526 && test $gcc_cv_header_valgrind_memcheck_h = no); then
527 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
529 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
530 valgrind_command="$valgrind_path -q"
531 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
532 [Define if you want to run subprograms and generated programs
533 through valgrind (a memory checker). This is extremely expensive.])
534 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
535 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
536 [Define if valgrind's valgrind/memcheck.h header is installed.])
538 if test $gcc_cv_header_memcheck_h = yes; then
539 AC_DEFINE(HAVE_MEMCHECK_H, 1,
540 [Define if valgrind's memcheck.h header is installed.])
543 AC_SUBST(valgrind_path_defines)
544 AC_SUBST(valgrind_command)
546 AC_ARG_ENABLE(mapped-location,
547 [ --enable-mapped-location location_t is fileline integer cookie],,
548 enable_mapped_location=no)
550 if test "$enable_mapped_location" = yes ; then
551 AC_DEFINE(USE_MAPPED_LOCATION, 1,
552 [Define if location_t is fileline integer cookie.])
555 # Enable code coverage collection
556 AC_ARG_ENABLE(coverage,
557 [ --enable-coverage[=LEVEL]
558 enable compiler's code coverage collection.
559 Use to measure compiler performance and locate
560 unused parts of the compiler. With LEVEL, specify
561 optimization. Values are opt, noopt,
563 [case "${enableval}" in
565 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
568 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
571 # a.k.a. --disable-coverage
575 AC_MSG_ERROR(unknown coverage setting $enableval)
579 AC_SUBST(coverage_flags)
581 AC_ARG_ENABLE(gather-detailed-mem-stats,
582 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
583 [enable_gather_detailed_mem_stats=no])
584 if test x$enable_gather_detailed_mem_stats = xyes ; then
585 AC_DEFINE(GATHER_STATISTICS, 1,
586 [Define to enable detailed memory allocation stats gathering.])
589 # -------------------------------
590 # Miscenalleous configure options
591 # -------------------------------
595 [ --with-stabs arrange to use stabs instead of host debug format],
599 # Determine whether or not multilibs are enabled.
600 AC_ARG_ENABLE(multilib,
601 [ --enable-multilib enable library support for multiple ABIs],
602 [], [enable_multilib=yes])
603 AC_SUBST(enable_multilib)
605 # Enable __cxa_atexit for C++.
606 AC_ARG_ENABLE(__cxa_atexit,
607 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
611 # Pass with no value to take the default
612 # Pass with a value to specify a thread package
613 AC_ARG_ENABLE(threads,
614 [ --enable-threads enable thread usage for target GCC
615 --enable-threads=LIB use LIB thread package for target GCC],,
618 AC_ARG_ENABLE(objc-gc,
619 [ --enable-objc-gc enable the use of Boehm's garbage collector with
620 the GNU Objective-C runtime],
621 if test x$enable_objc_gc = xno; then
629 [ --with-dwarf2 force the default debug format to be DWARF 2],
630 dwarf2="$with_dwarf2",
633 AC_ARG_ENABLE(shared,
634 [ --disable-shared don't provide a shared libgcc],
636 case $enable_shared in
640 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
641 for pkg in $enableval; do
642 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
649 ], [enable_shared=yes])
650 AC_SUBST(enable_shared)
653 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
655 case ${with_sysroot} in
656 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
657 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
660 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
661 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
663 if test "x$exec_prefix" = xNONE; then
664 if test "x$prefix" = xNONE; then
665 test_prefix=/usr/local
670 test_prefix=$exec_prefix
672 case ${TARGET_SYSTEM_ROOT} in
673 "${test_prefix}"|"${test_prefix}/"*|\
674 '${exec_prefix}'|'${exec_prefix}/'*)
675 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
676 TARGET_SYSTEM_ROOT_DEFINE="$t"
681 TARGET_SYSTEM_ROOT_DEFINE=
682 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
684 AC_SUBST(TARGET_SYSTEM_ROOT)
685 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
686 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
688 # Build with intermodule optimisations
689 AC_ARG_ENABLE(intermodule,
690 [ --enable-intermodule build the compiler in one step],
691 [case ${enable_intermodule} in
692 yes) onestep="-onestep";;
698 # Sanity check enable_languages in case someone does not run the toplevel
699 # configure # script.
700 AC_ARG_ENABLE(languages,
701 [ --enable-languages=LIST specify which front-ends to build],
702 [case ,${enable_languages}, in
704 # go safe -- we cannot be much sure without the toplevel
706 # analysis of which target libs are present and usable
710 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
715 enable_languages=c,${enable_languages}
718 [enable_languages=c])
721 for lang in ${srcdir}/*/config-lang.in
724 # The odd quoting in the next line works around
725 # an apparent bug in bash 1.12 on linux.
727 ${srcdir}/[*]/config-lang.in) ;;
729 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
730 if test "x$lang_alias" = x
732 echo "$lang doesn't set \$language." 1>&2
735 case ",$enable_languages," in
737 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
745 # -------------------------
746 # Checks for other programs
747 # -------------------------
751 # Find some useful tools
753 # We need awk to create options.c and options.h.
754 # Bail out if it's missing.
756 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
764 # By default, the Darwin ranlib will not treat common symbols as
765 # definitions when building the archive table of contents. Other
766 # ranlibs do that; pass an option to the Darwin ranlib that makes
767 # it behave similarly.
773 AC_SUBST(ranlib_flags)
777 # See if cmp has --ignore-initial.
778 gcc_AC_PROG_CMP_IGNORE_INITIAL
780 # See if we have the mktemp command.
781 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
783 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
785 # See if makeinfo has been installed and is modern enough
786 # that we can use it.
787 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
788 [GNU texinfo.* \([0-9][0-9.]*\)],
790 if test $gcc_cv_prog_makeinfo_modern = no; then
791 MAKEINFO="$MISSING makeinfo"
793 *** Makeinfo is missing or too old.
794 *** Info documentation will not be built.])
801 # Is pod2man recent enough to regenerate manpages?
802 AC_MSG_CHECKING([for recent Pod::Man])
803 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
805 GENERATED_MANPAGES=generated-manpages
810 AC_SUBST(GENERATED_MANPAGES)
813 dnl Don't use AC_PROG_LEX; we insist on flex.
814 dnl LEXLIB is not useful in gcc.
815 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
818 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
820 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
821 # check for build == host before using them.
824 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
825 && test -d ../binutils ; then
826 NM='$(objdir)/../binutils/nm-new'
828 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
832 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
833 && test -d ../binutils ; then
834 AR='$(objdir)/../binutils/ar'
836 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
840 # --------------------
841 # Checks for C headers
842 # --------------------
844 AC_MSG_CHECKING(for GNU C library)
845 AC_CACHE_VAL(gcc_cv_glibc,
847 [#include <features.h>],[
848 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
849 #error Not a GNU C library system
853 AC_MSG_RESULT($gcc_cv_glibc)
854 if test $gcc_cv_glibc = yes; then
855 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
858 # Need to reject headers which give warnings, so that the -Werror bootstrap
859 # works later. *sigh* This needs to come before all header checks.
866 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
867 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
868 sys/resource.h sys/param.h sys/times.h sys/stat.h \
869 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
871 # Check for thread headers.
872 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
873 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
875 # These tests can't be done till we know if we have limits.h.
883 # Stage specific cflags for build.
889 stage1_cflags="-Wa,-J"
895 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
896 # sources; use -no-cpp-precomp to get to GNU cpp.
897 # Apple's GCC has bugs in designated initializer handling, so disable
899 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
902 AC_SUBST(stage1_cflags)
904 # These libraries may be used by collect2.
905 # We may need a special search path to get them linked.
906 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
908 for libs in '' -lld -lmld \
909 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
910 '-L/usr/lib/cmplrs/cc3.11 -lmld'
913 AC_TRY_LINK_FUNC(ldopen,
914 [gcc_cv_collect2_libs="$libs"; break])
917 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
918 case $gcc_cv_collect2_libs in
920 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
922 AC_SUBST(COLLECT2_LIBS)
924 # When building Ada code on Alpha, we need exc_resume which is usually in
925 # -lexc. So test for it.
928 AC_SEARCH_LIBS(exc_resume, exc)
931 AC_SUBST(GNAT_LIBEXC)
933 # Some systems put ldexp and frexp in libm instead of libc; assume
934 # they're both in the same place. jcf-dump needs them.
937 AC_SEARCH_LIBS(ldexp, m)
942 # Use <inttypes.h> only if it exists,
943 # doesn't clash with <sys/types.h>, and declares intmax_t.
944 AC_MSG_CHECKING(for inttypes.h)
945 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
947 [#include <sys/types.h>
948 #include <inttypes.h>],
950 [gcc_cv_header_inttypes_h=yes],
951 gcc_cv_header_inttypes_h=no)])
952 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
953 if test $gcc_cv_header_inttypes_h = yes; then
954 AC_DEFINE(HAVE_INTTYPES_H, 1,
955 [Define if you have a working <inttypes.h> header file.])
958 dnl Disabled until we have a complete test for buggy enum bitfields.
959 dnl gcc_AC_C_ENUM_BF_UNSIGNED
961 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
962 sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
963 fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
964 scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
967 if test x$ac_cv_func_mbstowcs = xyes; then
968 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
969 [ AC_TRY_RUN([#include <stdlib.h>
975 gcc_cv_func_mbstowcs_works=yes,
976 gcc_cv_func_mbstowcs_works=no,
977 gcc_cv_func_mbstowcs_works=yes)])
978 if test x$gcc_cv_func_mbstowcs_works = xyes; then
979 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
980 [Define this macro if mbstowcs does not crash when its
981 first argument is NULL.])
985 AC_CHECK_TYPE(ssize_t, int)
987 # Try to determine the array type of the second argument of getgroups
988 # for the target system (int or gid_t).
990 if test "${target}" = "${build}"; then
991 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
994 # This condition may need some tweaking. It should include all
995 # targets where the array type of the second argument of getgroups
996 # is int and the type of gid_t is not equivalent to int.
997 *-*-sunos* | *-*-ultrix*)
998 TARGET_GETGROUPS_T=int
1001 TARGET_GETGROUPS_T=gid_t
1005 AC_SUBST(TARGET_GETGROUPS_T)
1007 gcc_AC_FUNC_PRINTF_PTR
1008 gcc_AC_FUNC_MMAP_BLACKLIST
1012 # Under VMS, vfork works very differently than on Unix. The standard test
1013 # won't work, and it isn't easily adaptable. It makes more sense to
1015 ac_cv_func_vfork_works=yes
1021 # Until we have in-tree GNU iconv:
1023 AC_SUBST(LIBICONV_DEP)
1027 # We will need to find libiberty.h and ansidecl.h
1028 saved_CFLAGS="$CFLAGS"
1029 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1030 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
1031 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
1032 fprintf_unlocked strstr errno snprintf vasprintf \
1033 malloc realloc calloc free basename getopt clock getpagesize, , ,[
1034 #include "ansidecl.h"
1035 #include "system.h"])
1037 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1038 #include "ansidecl.h"
1040 #ifdef HAVE_SYS_RESOURCE_H
1041 #include <sys/resource.h>
1046 #include "ansidecl.h"
1048 #ifdef HAVE_SYS_RESOURCE_H
1049 #include <sys/resource.h>
1051 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
1052 [Define to \`long' if <sys/resource.h> doesn't define.])])
1054 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1055 #include "ansidecl.h"
1062 gcc_AC_CHECK_DECLS(times, , ,[
1063 #include "ansidecl.h"
1065 #ifdef HAVE_SYS_TIMES_H
1066 #include <sys/times.h>
1070 # More time-related stuff.
1071 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1073 #include "ansidecl.h"
1075 #ifdef HAVE_SYS_TIMES_H
1076 #include <sys/times.h>
1078 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1079 if test $ac_cv_struct_tms = yes; then
1080 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1081 [Define if <sys/times.h> defines struct tms.])
1084 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1085 # revisit after autoconf 2.50.
1086 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1088 #include "ansidecl.h"
1090 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1091 if test $gcc_cv_type_clock_t = yes; then
1092 AC_DEFINE(HAVE_CLOCK_T, 1,
1093 [Define if <time.h> defines clock_t.])
1096 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1097 CFLAGS="$saved_CFLAGS"
1099 gcc_AC_INITFINI_ARRAY
1101 # mkdir takes a single argument on some systems.
1102 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1110 # With Setjmp/Longjmp based exception handling.
1111 AC_ARG_ENABLE(sjlj-exceptions,
1112 [ --enable-sjlj-exceptions
1113 arrange to use setjmp/longjmp exception handling],
1114 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1115 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1116 [Define 0/1 to force the choice for exception handling model.])])
1118 # For platforms with the unwind ABI which includes an unwind library,
1119 # libunwind, we can choose to use the system libunwind.
1120 AC_ARG_WITH(system-libunwind,
1121 [ --with-system-libunwind use installed libunwind])
1123 # --------------------------------------------------------
1124 # Build, host, and target specific configuration fragments
1125 # --------------------------------------------------------
1127 # Collect build-machine-specific information.
1128 . ${srcdir}/config.build
1130 # Collect host-machine-specific information.
1131 . ${srcdir}/config.host
1135 # Collect target-machine-specific information.
1136 . ${srcdir}/config.gcc
1138 extra_objs="${host_extra_objs} ${extra_objs}"
1139 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1141 # Default the target-machine variables that were not explicitly set.
1142 if test x"$tm_file" = x
1143 then tm_file=$cpu_type/$cpu_type.h; fi
1145 if test x"$extra_headers" = x
1146 then extra_headers=; fi
1148 if test x$md_file = x
1149 then md_file=$cpu_type/$cpu_type.md; fi
1151 if test x$out_file = x
1152 then out_file=$cpu_type/$cpu_type.c; fi
1154 if test x"$tmake_file" = x
1155 then tmake_file=$cpu_type/t-$cpu_type
1158 if test x"$dwarf2" = xyes
1159 then tm_file="$tm_file tm-dwarf2.h"
1162 # Say what files are being used for the output code and MD file.
1163 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1164 echo "Using \`$srcdir/config/$md_file' as machine description file."
1166 # If any of the xm_file variables contain nonexistent files, warn
1167 # about them and drop them.
1170 for x in $build_xm_file; do
1171 if test -f $srcdir/config/$x
1173 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1179 for x in $host_xm_file; do
1180 if test -f $srcdir/config/$x
1182 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1188 for x in $xm_file; do
1189 if test -f $srcdir/config/$x
1191 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1197 for f in $tm_file; do
1200 if test $count = ax; then
1201 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1203 echo "Using the following target machine macro files:"
1204 for f in $tm_file; do
1205 echo " $srcdir/config/$f"
1209 if test x$need_64bit_hwint = xyes; then
1210 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1211 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1214 if test x$use_long_long_for_widest_fast_int = xyes; then
1215 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1216 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1217 efficiently supported by the host hardware.])
1221 for f in $host_xm_file; do
1224 if test $count = a; then
1226 elif test $count = ax; then
1227 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1229 echo "Using the following host machine macro files:"
1230 for f in $host_xm_file; do
1231 echo " $srcdir/config/$f"
1234 echo "Using ${out_host_hook_obj} for host machine hooks."
1236 if test "$host_xm_file" != "$build_xm_file"; then
1238 for f in $build_xm_file; do
1241 if test $count = a; then
1243 elif test $count = ax; then
1244 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1246 echo "Using the following build machine macro files:"
1247 for f in $build_xm_file; do
1248 echo " $srcdir/config/$f"
1257 # Check if a valid thread package
1258 case ${enable_threads} in
1261 target_thread_file='single'
1265 target_thread_file='single'
1267 aix | dce | gnat | irix | posix | rtems | \
1268 single | solaris | vxworks | win32 )
1269 target_thread_file=${enable_threads}
1272 echo "${enable_threads} is an unknown thread package" 1>&2
1277 if test x${thread_file} = x; then
1278 # No thread file set by target-specific clauses in config.gcc,
1279 # so use file chosen by default logic above
1280 thread_file=${target_thread_file}
1283 # Make gthr-default.h if we have a thread file.
1285 if test $thread_file != single; then
1286 rm -f gthr-default.h
1287 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1288 gthread_flags=-DHAVE_GTHR_DEFAULT
1290 AC_SUBST(gthread_flags)
1296 if test x$enable___cxa_atexit = xyes || \
1297 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1298 AC_CHECK_FUNC(__cxa_atexit,
1299 [AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1300 [Define if you want to use __cxa_atexit, rather than atexit, to
1301 register C++ destructors for local statics and global objects.
1302 This is essential for fully standards-compliant handling of
1303 destructors, but requires __cxa_atexit in libc.])],
1304 echo "__cxa_atexit can't be enabled on this target")
1307 # Look for a file containing extra machine modes.
1308 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1309 extra_modes_file='$(srcdir)'/config/${extra_modes}
1310 AC_SUBST(extra_modes_file)
1311 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1312 [Define to the name of a file containing a list of extra machine modes
1313 for this architecture.])
1316 # auto-host.h is the file containing items generated by autoconf and is
1317 # the first file included by config.h.
1318 # If host=build, it is correct to have bconfig include auto-host.h
1319 # as well. If host!=build, we are in error and need to do more
1320 # work to find out the build config parameters.
1321 if test x$host = x$build
1323 build_auto=auto-host.h
1325 # We create a subdir, then run autoconf in the subdir.
1326 # To prevent recursion we set host and build for the new
1327 # invocation of configure to the build for this invocation
1334 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1335 *) realsrcdir=../${srcdir};;
1337 saved_CFLAGS="${CFLAGS}"
1338 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1339 ${realsrcdir}/configure \
1340 --enable-languages=${enable_languages-all} \
1341 --target=$target_alias --host=$build_alias --build=$build_alias
1342 CFLAGS="${saved_CFLAGS}"
1344 # We just finished tests for the build machine, so rename
1345 # the file auto-build.h in the gcc directory.
1346 mv auto-host.h ../auto-build.h
1349 build_auto=auto-build.h
1351 AC_SUBST(build_subdir)
1353 tm_file="${tm_file} defaults.h"
1354 tm_p_file="${tm_p_file} tm-preds.h"
1355 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1356 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1357 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1358 # put this back in temporarily.
1359 xm_file="ansidecl.h ${xm_file}"
1365 # Get the version trigger filename from the toplevel
1366 if test "${with_gcc_version_trigger+set}" = set; then
1367 gcc_version_trigger=$with_gcc_version_trigger
1369 gcc_version_trigger=${srcdir}/version.c
1372 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
1373 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1375 # Compile in configure arguments.
1376 if test -f configargs.h ; then
1377 # Being re-configured.
1378 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1379 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1381 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1384 # Double all backslashes and backslash all quotes to turn
1385 # gcc_config_arguments into a C string.
1386 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1387 $gcc_config_arguments
1389 gcc_config_arguments_str=`cat conftest.out`
1392 cat > configargs.h <<EOF
1393 /* Generated automatically. */
1394 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1395 static const char thread_model[] = "$thread_file";
1397 static const struct {
1398 const char *name, *value;
1399 } configure_default_options[] = $configure_default_options;
1403 # Internationalization
1405 VERSION="$gcc_version"
1406 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
1407 [The name of this program for internationalization purposes.])
1411 ZW_GNU_GETTEXT_SISTER_DIR
1413 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1414 # -liconv on the link line twice.
1415 case "$LIBINTL" in *$LIBICONV*)
1419 # Windows32 Registry support for specifying GCC installation paths.
1420 AC_ARG_ENABLE(win32-registry,
1421 [ --disable-win32-registry
1422 disable lookup of installation paths in the
1423 Registry on Windows hosts
1424 --enable-win32-registry enable registry lookup (default)
1425 --enable-win32-registry=KEY
1426 use KEY instead of GCC version as the last portion
1427 of the registry key],,)
1429 win32 | pe | cygwin* | mingw32* | uwin*)
1430 AC_MSG_CHECKING(whether windows registry support is requested)
1431 if test "x$enable_win32_registry" != xno; then
1432 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1433 [Define to 1 if installation paths should be looked up in Windows32
1434 Registry. Ignored on non windows32 hosts.])
1436 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1441 # Check if user specified a different registry key.
1442 case "x${enable_win32_registry}" in
1445 gcc_cv_win32_registry_key="$VERSION"
1448 # no registry lookup.
1449 gcc_cv_win32_registry_key=''
1452 # user-specified key.
1453 gcc_cv_win32_registry_key="$enable_win32_registry"
1457 if test "x$enable_win32_registry" != xno; then
1458 AC_MSG_CHECKING(registry key on windows hosts)
1459 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1460 [Define to be the last portion of registry key on windows hosts.])
1461 AC_MSG_RESULT($gcc_cv_win32_registry_key)
1466 # Get an absolute path to the GCC top-level source directory
1467 holddir=`${PWDCMD-pwd}`
1469 topdir=`${PWDCMD-pwd}`
1472 # Conditionalize the makefile for this host machine.
1474 for f in ${host_xmake_file}
1476 if test -f ${srcdir}/config/$f
1478 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1482 # Conditionalize the makefile for this target machine.
1484 for f in ${tmake_file}
1486 if test -f ${srcdir}/config/$f
1488 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1491 tmake_file="${tmake_file_}"
1493 symbolic_link='ln -s'
1495 # If the host doesn't support symlinks, modify CC in
1496 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1497 # Otherwise, we can use "CC=$(CC)".
1499 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
1501 cc_set_by_configure="\$(CC)"
1502 quoted_cc_set_by_configure="\$(CC)"
1503 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1504 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1507 if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
1509 symbolic_link="cp -p"
1513 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1514 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1515 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1516 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1520 out_object_file=`basename $out_file .c`.o
1524 for f in $tm_file; do
1527 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1528 tm_include_list="${tm_include_list} $f"
1531 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1532 tm_include_list="${tm_include_list} config/$f"
1539 for f in $tm_p_file; do
1542 tm_p_file_list="${tm_p_file_list} $f"
1543 tm_p_include_list="${tm_p_include_list} $f"
1546 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1547 tm_p_include_list="${tm_p_include_list} config/$f"
1553 for f in $xm_file; do
1556 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1557 xm_include_list="${xm_include_list} $f"
1560 xm_file_list="${xm_file_list} $f"
1561 xm_include_list="${xm_include_list} $f"
1564 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1565 xm_include_list="${xm_include_list} config/$f"
1571 host_xm_include_list=
1572 for f in $host_xm_file; do
1575 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1576 host_xm_include_list="${host_xm_include_list} $f"
1579 host_xm_file_list="${host_xm_file_list} $f"
1580 host_xm_include_list="${host_xm_include_list} $f"
1583 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1584 host_xm_include_list="${host_xm_include_list} config/$f"
1590 for f in $build_xm_file; do
1593 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1594 build_xm_include_list="${build_xm_include_list} $f"
1596 auto-build.h | auto-host.h )
1597 build_xm_file_list="${build_xm_file_list} $f"
1598 build_xm_include_list="${build_xm_include_list} $f"
1601 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1602 build_xm_include_list="${build_xm_include_list} config/$f"
1607 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1608 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1609 CROSS= AC_SUBST(CROSS)
1610 ALL=all.internal AC_SUBST(ALL)
1611 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1612 if test x$host != x$target
1614 CROSS="-DCROSS_COMPILE"
1616 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1617 case "$host","$target" in
1618 # Darwin crosses can use the host system's libraries and headers,
1619 # because of the fat library support. Of course, it must be the
1620 # same version of Darwin on both sides. Allow the user to
1621 # just say --target=foo-darwin without a version number to mean
1622 # "the version on this system".
1623 *-*-darwin*,*-*-darwin*)
1624 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1625 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1626 if test $hostos = $targetos -o $targetos = darwin ; then
1628 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1633 i?86-*-*,x86_64-*-* \
1634 | powerpc*-*-*,powerpc64*-*-*)
1635 CROSS="$CROSS -DNATIVE_CROSS" ;;
1637 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1638 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1639 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1642 # If this is a cross-compiler that does not
1643 # have its own set of headers then define
1646 # If this is using newlib, without having the headers available now,
1647 # then define inhibit_libc in LIBGCC2_CFLAGS.
1648 # This prevents libgcc2 from containing any code which requires libc
1651 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1652 test x$with_newlib = xyes ; } &&
1653 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1654 inhibit_libc=-Dinhibit_libc
1656 AC_SUBST(inhibit_libc)
1658 # When building gcc with a cross-compiler, we need to adjust things so
1659 # that the generator programs are still built with the native compiler.
1660 # Also, we cannot run fixincludes or fix-header.
1662 # These are the normal (build=host) settings:
1663 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1664 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1665 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1667 # Possibly disable fixproto, on a per-target basis.
1668 case ${use_fixproto} in
1673 STMP_FIXPROTO=stmp-fixproto
1676 AC_SUBST(STMP_FIXPROTO)
1678 # And these apply if build != host, or we are generating coverage data
1679 if test x$build != x$host || test "x$coverage_flags" != x
1681 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1683 if test "x$TARGET_SYSTEM_ROOT" = x; then
1689 # When bootstrapping from the toplevel, only run fixincludes during stage1
1690 if test -d ../prev-gcc
1693 cp -R ../prev-gcc/include include
1696 # Expand extra_headers to include complete path.
1697 # This substitutes for lots of t-* files.
1699 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1700 for file in ${extra_headers} ; do
1701 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1704 # Define collect2 in Makefile.
1705 case $host_can_use_collect2 in
1707 *) collect2='collect2$(exeext)' ;;
1709 AC_SUBST([collect2])
1711 # Add a definition of USE_COLLECT2 if system wants one.
1712 case $use_collect2 in
1713 no) use_collect2= ;;
1716 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1717 xm_defines="${xm_defines} USE_COLLECT2"
1718 case $host_can_use_collect2 in
1720 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1726 # ---------------------------
1727 # Assembler & linker features
1728 # ---------------------------
1730 # Identify the assembler which will work hand-in-glove with the newly
1731 # built GCC, so that we can examine its features. This is the assembler
1732 # which will be driven by the driver program.
1734 # If build != host, and we aren't building gas in-tree, we identify a
1735 # build->target assembler and hope that it will have the same features
1736 # as the host->target assembler we'll be using.
1737 AC_MSG_CHECKING(what assembler to use)
1740 gcc_cv_gas_major_version=
1741 gcc_cv_gas_minor_version=
1742 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1743 if test -x "$DEFAULT_ASSEMBLER"; then
1744 gcc_cv_as="$DEFAULT_ASSEMBLER"
1745 elif test -x as$host_exeext; then
1746 # Build using assembler in the current directory.
1747 gcc_cv_as=./as$host_exeext
1748 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1749 && test -f ../gas/Makefile \
1750 && test x$build = x$host; then
1751 # Single tree build which includes gas. We want to prefer it
1752 # over whatever linker top-level may have detected, since
1753 # we'll use what we're building after installation anyway.
1755 _gcc_COMPUTE_GAS_VERSION
1756 rm -f as$host_exeext
1757 $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1758 in_tree_gas_is_elf=no
1759 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1760 || (grep 'obj_format = multi' ../gas/Makefile \
1761 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1763 in_tree_gas_is_elf=yes
1765 m4_pattern_allow([AS_FOR_TARGET])dnl
1766 elif test -x "$AS_FOR_TARGET"; then
1767 gcc_cv_as="$AS_FOR_TARGET"
1768 elif test -x "$AS" && test x$host = x$target; then
1772 if test "x$gcc_cv_as" = x; then
1773 # Search the same directories that the installed compiler will
1774 # search. Else we may find the wrong assembler and lose. If we
1775 # do not find a suitable assembler binary, then try the user's
1778 # Also note we have to check MD_EXEC_PREFIX before checking the
1779 # user's path. Unfortunately, there is no good way to get at the
1780 # value of MD_EXEC_PREFIX here. So we do a brute force search
1781 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1782 # to be fixed as part of the make/configure rewrite too.
1784 if test "x$exec_prefix" = xNONE; then
1785 if test "x$prefix" = xNONE; then
1786 test_prefix=/usr/local
1791 test_prefix=$exec_prefix
1794 # If the loop below does not find an assembler, then use whatever
1795 # one we can find in the users's path.
1797 if test "x$program_prefix" != xNONE; then
1798 gcc_cv_as=${program_prefix}as$host_exeext
1800 gcc_cv_as=`echo as | sed "${program_transform_name}"`$host_exeext
1803 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1804 $test_prefix/libexec/gcc/$target_noncanonical \
1805 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1806 /usr/lib/gcc/$target_noncanonical \
1807 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1808 $test_prefix/$target_noncanonical/bin"
1810 if test x$host = x$target; then
1811 test_dirs="$test_dirs \
1816 /bsd43/usr/lib/cmplrs/cc \
1817 /usr/cross64/usr/bin \
1818 /usr/lib/cmplrs/cc \
1819 /sysv/usr/lib/cmplrs/cc \
1820 /svr4/usr/lib/cmplrs/cc \
1824 for dir in $test_dirs; do
1825 if test -x $dir/as$host_exeext; then
1826 gcc_cv_as=$dir/as$host_exeext
1831 case $in_tree_gas in
1833 AC_MSG_RESULT("newly built gas")
1836 AC_MSG_RESULT($gcc_cv_as)
1840 # Identify the linker which will work hand-in-glove with the newly
1841 # built GCC, so that we can examine its features. This is the linker
1842 # which will be driven by the driver program.
1844 # If build != host, and we aren't building gas in-tree, we identify a
1845 # build->target linker and hope that it will have the same features
1846 # as the host->target linker we'll be using.
1847 AC_MSG_CHECKING(what linker to use)
1850 gcc_cv_gld_major_version=
1851 gcc_cv_gld_minor_version=
1852 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1853 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1854 if test -x "$DEFAULT_LINKER"; then
1855 gcc_cv_ld="$DEFAULT_LINKER"
1856 elif test -x collect-ld$host_exeext; then
1857 # Build using linker in the current directory.
1858 gcc_cv_ld=./collect-ld$host_exeext
1859 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1860 && test -f ../ld/Makefile \
1861 && test x$build = x$host; then
1862 # Single tree build which includes ld. We want to prefer it
1863 # over whatever linker top-level may have detected, since
1864 # we'll use what we're building after installation anyway.
1866 in_tree_ld_is_elf=no
1867 if (grep 'EMUL = .*elf' ../ld/Makefile \
1868 || grep 'EMUL = .*linux' ../ld/Makefile \
1869 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1870 in_tree_ld_is_elf=yes
1872 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
1875 gcc_cv_gld_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1877 if test x$gcc_cv_gld_version != x; then
1882 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1883 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1885 rm -f collect-ld$host_exeext
1886 $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext \
1888 elif test -x "$LD_FOR_TARGET"; then
1889 gcc_cv_ld="$LD_FOR_TARGET"
1890 elif test -x "$LD" && test x$host = x$target; then
1894 if test "x$gcc_cv_ld" = x; then
1895 # Search the same directories that the installed compiler will
1896 # search. Else we may find the wrong linker and lose. If we
1897 # do not find a suitable linker binary, then try the user's
1900 # Also note we have to check MD_EXEC_PREFIX before checking the
1901 # user's path. Unfortunately, there is no good way to get at the
1902 # value of MD_EXEC_PREFIX here. So we do a brute force search
1903 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1904 # to be fixed as part of the make/configure rewrite too.
1906 if test "x$exec_prefix" = xNONE; then
1907 if test "x$prefix" = xNONE; then
1908 test_prefix=/usr/local
1913 test_prefix=$exec_prefix
1916 # If the loop below does not find an linker, then use whatever
1917 # one we can find in the users's path.
1919 if test "x$program_prefix" != xNONE; then
1920 gcc_cv_ld=${program_prefix}ld$host_exeext
1922 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$host_exeext
1925 test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1926 $test_prefix/libexec/gcc/$target_noncanonical \
1927 /usr/lib/gcc/$target_noncanonical/$gcc_version \
1928 /usr/lib/gcc/$target_noncanonical \
1929 $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1930 $test_prefix/$target_noncanonical/bin"
1932 if test x$host = x$target; then
1933 test_dirs="$test_dirs \
1938 /bsd43/usr/lib/cmplrs/cc \
1939 /usr/cross64/usr/bin \
1940 /usr/lib/cmplrs/cc \
1941 /sysv/usr/lib/cmplrs/cc \
1942 /svr4/usr/lib/cmplrs/cc \
1946 for dir in $test_dirs; do
1947 if test -x $dir/ld$host_exeext; then
1948 gcc_cv_ld=$dir/ld$host_exeext
1955 AC_MSG_RESULT("newly built ld")
1958 AC_MSG_RESULT($gcc_cv_ld)
1962 # Figure out what nm we will be using.
1963 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1964 AC_MSG_CHECKING(what nm to use)
1966 if test -x nm$host_exeext; then
1967 gcc_cv_nm=./nm$host_exeext
1968 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1969 && test -f ../binutils/Makefile; then
1970 # Single tree build which includes binutils.
1972 gcc_cv_nm=./nm$host_exeext
1973 rm -f nm$host_exeext
1974 $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1975 elif test "x$program_prefix" != xNONE; then
1976 gcc_cv_nm=${program_prefix}nm$host_exeext
1978 gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$host_exeext
1981 yes) AC_MSG_RESULT("newly built nm") ;;
1982 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1985 # Figure out what objdump we will be using.
1986 AC_MSG_CHECKING(what objdump to use)
1988 if test -x objdump$host_exeext; then
1989 gcc_cv_objdump=./objdump$host_exeext
1990 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1991 && test -f ../binutils/Makefile; then
1992 # Single tree build which includes binutils.
1994 gcc_cv_objdump=./objdump$host_exeext
1995 rm -f objdump$host_exeext
1996 $symbolic_link ../binutils/objdump$host_exeext \
1997 objdump$host_exeext 2>/dev/null
1998 elif test "x$program_prefix" != xNONE; then
1999 gcc_cv_objdump=${program_prefix}objdump$host_exeext
2001 gcc_cv_objdump=`echo objdump | \
2002 sed "${program_transform_name}"`$host_exeext
2004 case $in_tree_objdump in
2005 yes) AC_MSG_RESULT("newly built objdump") ;;
2006 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
2009 # Figure out what assembler alignment features are present.
2010 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2014 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2015 [Define if your assembler supports .balign and .p2align.])])
2017 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2020 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2021 [Define if your assembler supports specifying the maximum number
2022 of bytes to skip when using the GAS .p2align command.])])
2024 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2026 [conftest_label1: .word 0
2028 conftest_label2: .word 0
2030 [if test x$gcc_cv_nm != x; then
2031 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2032 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2033 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2035 else gcc_cv_as_subsection_m1=yes
2037 rm -f conftest.nm1 conftest.nm2
2039 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2040 [Define if your assembler supports .subsection and .subsection -1 starts
2041 emitting at the beginning of your section.])])
2043 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2046 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2048 # .hidden needs to be supported in both the assembler and the linker,
2049 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2050 # This is irritatingly difficult to feature test for; we have to check the
2051 # date string after the version number. If we've got an in-tree
2052 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2054 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2055 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2060 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2061 [if test $in_tree_ld = yes ; then
2063 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2064 && test $in_tree_ld_is_elf = yes; then
2065 gcc_cv_ld_hidden=yes
2068 gcc_cv_ld_hidden=yes
2069 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2070 if echo "$ld_ver" | grep GNU > /dev/null; then
2072 ld_vers=`echo $ld_ver | sed -n \
2073 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2074 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2075 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2076 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2077 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
2078 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
2079 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2080 if test 0"$ld_date" -lt 20020404; then
2081 if test -n "$ld_date"; then
2082 # If there was date string, but was earlier than 2002-04-04, fail
2084 elif test -z "$ld_vers"; then
2085 # If there was no date string nor ld version number, something is wrong
2088 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2089 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2090 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2091 test -z "$ld_vers_patch" && ld_vers_patch=0
2092 if test "$ld_vers_major" -lt 2; then
2094 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2095 gcc_cv_ld_hidden="no"
2096 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2104 hppa64*-*-hpux* | ia64*-*-hpux*)
2105 gcc_cv_ld_hidden=yes
2113 libgcc_visibility=no
2114 AC_SUBST(libgcc_visibility)
2115 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2116 libgcc_visibility=yes
2117 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2118 [Define if your assembler and linker support .hidden.])
2121 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2122 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2130 [# GAS versions before 2.11 do not support uleb128,
2131 # despite appearing to.
2132 # ??? There exists an elf-specific test that will crash
2133 # the assembler. Perhaps it's better to figure out whether
2134 # arbitrary sections are supported and try the test.
2135 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2136 if echo "$as_ver" | grep GNU > /dev/null; then
2138 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2139 as_major=`echo $as_ver | sed 's/\..*//'`
2140 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2142 if test $as_major -eq 2 && test $as_minor -lt 11
2144 else gcc_cv_as_leb128=yes
2147 [AC_DEFINE(HAVE_AS_LEB128, 1,
2148 [Define if your assembler supports .sleb128 and .uleb128.])])
2150 # GAS versions up to and including 2.11.0 may mis-optimize
2152 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2160 .section .eh_frame,"aw",@progbits
2162 .4byte .LECIE1-.LSCIE1
2176 .4byte .LEFDE1-.LASFDE1
2178 .4byte .LASFDE1-__FRAME_BEGIN__
2186 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2187 cat > conftest.lit <<EOF
2188 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2189 0010 01000000 12000000 18000000 00000000 ................
2190 0020 08000000 04080000 0044 .........D @&t@
2192 cat > conftest.big <<EOF
2193 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2194 0010 00000001 00000012 00000018 00000000 ................
2195 0020 00000008 04000000 0844 .........D @&t@
2197 # If the assembler didn't choke, and we can objdump,
2198 # and we got the correct data, then succeed.
2199 if test x$gcc_cv_objdump != x \
2200 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2201 | tail -3 > conftest.got \
2202 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2203 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2205 gcc_cv_as_eh_frame=yes
2206 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2207 gcc_cv_as_eh_frame=buggy
2209 # Uh oh, what do we do now?
2210 gcc_cv_as_eh_frame=no
2213 if test $gcc_cv_as_eh_frame = buggy; then
2214 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2215 [Define if your assembler mis-optimizes .eh_frame data.])
2218 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2219 [elf,2,12,0], [--fatal-warnings],
2220 [.section .rodata.str, "aMS", @progbits, 1])
2221 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2222 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2223 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2225 # Thread-local storage - the check is heavily parametrized.
2234 .section ".tdata","awT",@progbits
2237 ldq $27,__tls_get_addr($29) !literal!1
2238 lda $16,foo($29) !tlsgd!1
2239 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2240 ldq $27,__tls_get_addr($29) !literal!2
2241 lda $16,foo($29) !tlsldm!2
2242 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2243 ldq $1,foo($29) !gotdtprel
2244 ldah $2,foo($29) !dtprelhi
2245 lda $3,foo($2) !dtprello
2246 lda $4,foo($29) !dtprel
2247 ldq $1,foo($29) !gottprel
2248 ldah $2,foo($29) !tprelhi
2249 lda $3,foo($2) !tprello
2250 lda $4,foo($29) !tprel'
2253 tls_as_opt=--fatal-warnings
2257 .section ".tdata","awT",@progbits
2261 leal foo@TLSGD(,%ebx,1), %eax
2262 leal foo@TLSLDM(%ebx), %eax
2263 leal foo@DTPOFF(%eax), %edx
2264 movl foo@GOTTPOFF(%ebx), %eax
2265 subl foo@GOTTPOFF(%ebx), %eax
2266 addl foo@GOTNTPOFF(%ebx), %eax
2267 movl foo@INDNTPOFF, %eax
2268 movl $foo@TPOFF, %eax
2269 subl $foo@TPOFF, %eax
2270 leal foo@NTPOFF(%ecx), %eax'
2273 tls_as_opt=--fatal-warnings
2277 .section ".tdata","awT",@progbits
2281 leaq foo@TLSGD(%rip), %rdi
2282 leaq foo@TLSLD(%rip), %rdi
2283 leaq foo@DTPOFF(%rax), %rdx
2284 movq foo@GOTTPOFF(%rip), %rax
2285 movq $foo@TPOFF, %rax'
2288 tls_as_opt=--fatal-warnings
2292 .section ".tdata","awT",@progbits
2295 addl r16 = @ltoff(@dtpmod(foo#)), gp
2296 addl r17 = @ltoff(@dtprel(foo#)), gp
2297 addl r18 = @ltoff(@tprel(foo#)), gp
2298 addl r19 = @dtprel(foo#), gp
2299 adds r21 = @dtprel(foo#), r13
2300 movl r23 = @dtprel(foo#)
2301 addl r20 = @tprel(foo#), gp
2302 adds r22 = @tprel(foo#), r13
2303 movl r24 = @tprel(foo#)'
2306 tls_as_opt=--fatal-warnings
2310 .section ".tdata","awT",@progbits
2318 addi 3,31,ld0@got@tlsgd
2320 addi 3,31,x1@got@tlsld
2323 addis 9,3,x2@dtprel@ha
2324 addi 9,9,x2@dtprel@l
2325 lwz 9,x3@got@tprel(31)
2328 addis 9,2,x2@tprel@ha
2329 addi 9,9,x2@tprel@l'
2332 tls_as_opt="-a32 --fatal-warnings"
2336 .section ".tdata","awT",@progbits
2344 addi 3,2,ld0@got@tlsgd
2350 addi 3,2,x1@got@tlsld
2356 addis 9,3,x2@dtprel@ha
2357 addi 9,9,x2@dtprel@l
2360 ld 9,x3@got@dtprel(2)
2366 tls_as_opt="-a64 --fatal-warnings"
2370 .section ".tdata","awT",@progbits
2379 l %r1,foo@GOTNTPOFF(%r12)
2380 l %r1,0(%r1):tls_load:foo
2381 bas %r14,0(%r1,%r13):tls_gdcall:foo
2382 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2385 tls_as_opt="-m31 --fatal-warnings"
2389 .section ".tdata","awT",@progbits
2397 lg %r1,foo@GOTNTPOFF(%r12)
2398 larl %r1,foo@INDNTPOFF
2399 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2400 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2403 tls_as_opt="-m64 -Aesame --fatal-warnings"
2405 sh-*-* | sh[34]-*-*)
2407 .section ".tdata","awT",@progbits
2417 tls_as_opt=--fatal-warnings
2421 sparc*-sun-solaris2.*)
2428 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2430 .section ".tdata",#alloc,#write,#tls
2433 sethi %tgd_hi22(foo), %o0
2434 add %o0, %tgd_lo10(foo), %o1
2435 add %l7, %o1, %o0, %tgd_add(foo)
2436 call __tls_get_addr, %tgd_call(foo)
2437 sethi %tldm_hi22(foo), %l1
2438 add %l1, %tldm_lo10(foo), %l2
2439 add %l7, %l2, %o0, %tldm_add(foo)
2440 call __tls_get_addr, %tldm_call(foo)
2441 sethi %tldo_hix22(foo), %l3
2442 xor %l3, %tldo_lox10(foo), %l4
2443 add %o0, %l4, %l5, %tldo_add(foo)
2444 sethi %tie_hi22(foo), %o3
2445 add %o3, %tie_lo10(foo), %o3
2446 ld [%l7 + %o3], %o2, %tie_ld(foo)
2447 add %g7, %o2, %o4, %tie_add(foo)
2448 sethi %tle_hix22(foo), %l1
2449 xor %l1, %tle_lox10(foo), %o5
2450 ld [%g7 + %o5], %o1'
2455 .section ".tdata","awT",@progbits
2458 sethi %tgd_hi22(foo), %o0
2459 add %o0, %tgd_lo10(foo), %o1
2460 add %l7, %o1, %o0, %tgd_add(foo)
2461 call __tls_get_addr, %tgd_call(foo)
2462 sethi %tldm_hi22(foo), %l1
2463 add %l1, %tldm_lo10(foo), %l2
2464 add %l7, %l2, %o0, %tldm_add(foo)
2465 call __tls_get_addr, %tldm_call(foo)
2466 sethi %tldo_hix22(foo), %l3
2467 xor %l3, %tldo_lox10(foo), %l4
2468 add %o0, %l4, %l5, %tldo_add(foo)
2469 sethi %tie_hi22(foo), %o3
2470 add %o3, %tie_lo10(foo), %o3
2471 ld [%l7 + %o3], %o2, %tie_ld(foo)
2472 add %g7, %o2, %o4, %tie_add(foo)
2473 sethi %tle_hix22(foo), %l1
2474 xor %l1, %tle_lox10(foo), %o5
2475 ld [%g7 + %o5], %o1'
2478 tls_as_opt="-32 --fatal-warnings"
2483 if test -z "$tls_first_major"; then
2484 : # If we don't have a check, assume no support.
2486 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2487 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2488 [AC_DEFINE(HAVE_AS_TLS, 1,
2489 [Define if your assembler supports thread-local storage.])])
2492 # Target-specific assembler checks.
2494 if test x"$demangler_in_ld" = xyes; then
2495 AC_MSG_CHECKING(linker --demangle support)
2496 gcc_cv_ld_demangle=no
2497 if test $in_tree_ld = yes; then
2498 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2499 gcc_cv_ld_demangle=yes
2501 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2502 # Check if the GNU linker supports --demangle option
2503 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2504 gcc_cv_ld_demangle=yes
2507 if test x"$gcc_cv_ld_demangle" = xyes; then
2508 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2509 [Define if your linker supports --demangle option.])
2511 AC_MSG_RESULT($gcc_cv_ld_demangle)
2515 # All TARGET_ABI_OSF targets.
2516 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2517 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2518 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2521 extbl $3, $2, $3 !lituse_bytoff!1
2522 ldq $2, a($29) !literal!1
2523 ldq $4, b($29) !literal!2
2524 ldq_u $3, 0($2) !lituse_base!1
2525 ldq $27, f($29) !literal!5
2526 jsr $26, ($27), f !lituse_jsr!5
2527 ldah $29, 0($26) !gpdisp!3
2528 lda $0, c($29) !gprel
2529 ldah $1, d($29) !gprelhigh
2530 lda $1, d($1) !gprellow
2531 lda $29, 0($29) !gpdisp!3],,
2532 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2533 [Define if your assembler supports explicit relocations.])])
2537 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2538 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2539 [-no-mul-bug-abort], [.text],,
2540 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2541 [Define if your assembler supports the -no-mul-bug-abort option.])])
2545 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2546 [.register %g2, #scratch],,
2547 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2548 [Define if your assembler supports .register.])])
2550 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2552 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2553 [Define if your assembler supports -relax option.])])
2555 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2556 gcc_cv_as_sparc_ua_pcrel,,
2564 .uaword %r_disp32(foo)],
2565 [if test x$gcc_cv_ld != x \
2566 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2567 gcc_cv_as_sparc_ua_pcrel=yes
2570 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2571 [Define if your assembler and linker support unaligned PC relative relocs.])
2573 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2574 gcc_cv_as_sparc_ua_pcrel_hidden,,
2579 .uaword %r_disp32(foo)
2580 .byte 0x32, 0x33, 0x34
2585 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2586 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2587 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2588 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2589 if $gcc_cv_objdump -R conftest 2> /dev/null \
2590 | grep 'DISP32' > /dev/null 2>&1; then
2593 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2597 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2598 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2599 ]) # unaligned pcrel relocs
2601 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2602 gcc_cv_as_sparc_offsetable_lo10,,
2605 or %g1, %lo(ab) + 12, %g1
2606 or %g1, %lo(ab + 12), %g1],
2607 [if test x$gcc_cv_objdump != x \
2608 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2609 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2610 gcc_cv_as_offsetable_lo10=yes
2612 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2613 [Define if your assembler supports offsetable %lo().])])
2617 i[34567]86-*-* | x86_64-*-*)
2620 cygwin* | pe | mingw32*)
2621 # Used for DWARF 2 in PE
2622 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2623 gcc_cv_as_ix86_pe_secrel32,
2629 [if test x$gcc_cv_ld != x \
2630 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2631 gcc_cv_as_ix86_pe_secrel32=yes
2634 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2635 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2639 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2640 gcc_cv_as_ix86_filds_fists,
2641 [2,9,0],, [filds mem; fists mem],,
2642 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2643 [Define if your assembler uses the new HImode fild and fist notation.])])
2645 gcc_GAS_CHECK_FEATURE([cmov syntax],
2646 gcc_cv_as_ix86_cmov_sun_syntax,,,
2647 [cmovl.l %edx, %eax],,
2648 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2649 [Define if your assembler supports the Sun syntax for cmov.])])
2651 # This one is used unconditionally by i386.[ch]; it is to be defined
2652 # to 1 if the feature is present, 0 otherwise.
2653 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2654 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2660 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2661 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2662 [Define true if the assembler supports '.long foo@GOTOFF'.])
2666 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2667 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2669 addl r15 = @ltoffx(x#), gp
2671 ld8.mov r16 = [[r15]], x#],,
2672 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2673 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2679 *-*-aix*) conftest_s=' .csect .text[[PR]]
2681 *-*-darwin*) conftest_s=' .text
2683 *) conftest_s=' .text
2687 gcc_GAS_CHECK_FEATURE([mfcr field support],
2688 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2690 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2691 [Define if your assembler supports mfcr field.])])
2695 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2696 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2697 [ lw $4,%gp_rel(foo)($4)],,
2698 [if test x$target_cpu_default = x
2699 then target_cpu_default=MASK_EXPLICIT_RELOCS
2700 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2703 if test x$gas_flag = xyes \
2704 || test x"$host" != x"$build" \
2705 || test ! -x "$gcc_cv_as" \
2706 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2709 echo "*** This configuration requires the GNU assembler" >&2
2714 # ??? Not all targets support dwarf2 debug_line, even within a version
2715 # of gas. Moreover, we need to emit a valid instruction to trigger any
2716 # info to the output file. So, as supported targets are added to gas 2.11,
2717 # add some instruction here to (also) show we expect this might work.
2718 # ??? Once 2.11 is released, probably need to add first known working
2719 # version to the per-target configury.
2721 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2722 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2723 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2726 ia64*-*-* | s390*-*-*)
2733 if test x"$insn" != x; then
2735 .file 1 \"conftest.s\"
2738 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2739 gcc_cv_as_dwarf2_debug_line,
2740 [elf,2,11,0],, [$conftest_s],
2741 [# ??? This fails with non-gnu grep. Maybe use objdump?
2742 if grep debug_line conftest.o > /dev/null 2>&1; then
2743 gcc_cv_as_dwarf2_debug_line=yes
2746 # The .debug_line file table must be in the exact order that
2747 # we specified the files, since these indices are also used
2748 # by DW_AT_decl_file. Approximate this test by testing if
2749 # the assembler bitches if the same index is assigned twice.
2750 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2751 gcc_cv_as_dwarf2_file_buggy,,,
2755 if test $gcc_cv_as_dwarf2_debug_line = yes \
2756 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2757 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2758 [Define if your assembler supports dwarf2 .file/.loc directives,
2759 and preserves file table indices exactly as given.])
2762 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2763 gcc_cv_as_gdwarf2_flag,
2764 [elf,2,11,0], [--gdwarf2], [$insn],,
2765 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2766 [Define if your assembler supports the --gdwarf2 option.])])
2768 gcc_GAS_CHECK_FEATURE([--gstabs option],
2769 gcc_cv_as_gstabs_flag,
2770 [elf,2,11,0], [--gstabs], [$insn],
2771 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2772 # and warns about it, but still exits successfully. So check for
2774 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2776 else gcc_cv_as_gstabs_flag=yes
2778 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2779 [Define if your assembler supports the --gstabs option.])])
2782 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2783 gcc_cv_ld_ro_rw_mix=unknown
2784 if test $in_tree_ld = yes ; then
2785 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2786 && test $in_tree_ld_is_elf = yes; then
2787 gcc_cv_ld_ro_rw_mix=read-write
2789 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2790 echo '.section myfoosect, "a"' > conftest1.s
2791 echo '.section myfoosect, "aw"' > conftest2.s
2792 echo '.byte 1' >> conftest2.s
2793 echo '.section myfoosect, "a"' > conftest3.s
2794 echo '.byte 0' >> conftest3.s
2795 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2796 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2797 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2798 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2799 conftest2.o conftest3.o > /dev/null 2>&1; then
2800 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2801 | sed -e '/myfoosect/!d' -e N`
2802 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2803 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2804 gcc_cv_ld_ro_rw_mix=read-only
2806 gcc_cv_ld_ro_rw_mix=read-write
2811 rm -f conftest.* conftest[123].*
2814 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2815 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2816 [Define if your linker links a mix of read-only
2817 and read-write sections into a read-write section.])
2819 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2821 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2822 gcc_cv_ld_eh_frame_hdr=no
2823 if test $in_tree_ld = yes ; then
2824 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2825 && test $in_tree_ld_is_elf = yes; then
2826 gcc_cv_ld_eh_frame_hdr=yes
2828 elif test x$gcc_cv_ld != x; then
2829 # Check if linker supports --eh-frame-hdr option
2830 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2831 gcc_cv_ld_eh_frame_hdr=yes
2834 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2835 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2836 [Define if your linker supports --eh-frame-hdr option.])
2838 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2840 AC_MSG_CHECKING(linker position independent executable support)
2842 if test $in_tree_ld = yes ; then
2843 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2844 && test $in_tree_ld_is_elf = yes; then
2847 elif test x$gcc_cv_ld != x; then
2848 # Check if linker supports -pie option
2849 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2853 if test x"$gcc_cv_ld_pie" = xyes; then
2854 AC_DEFINE(HAVE_LD_PIE, 1,
2855 [Define if your linker supports -pie option.])
2857 AC_MSG_RESULT($gcc_cv_ld_pie)
2863 AC_CACHE_CHECK(linker --as-needed support,
2864 gcc_cv_ld_as_needed,
2865 [gcc_cv_ld_as_needed=no
2866 if test $in_tree_ld = yes ; then
2867 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2868 && test $in_tree_ld_is_elf = yes; then
2869 gcc_cv_ld_as_needed=yes
2871 elif test x$gcc_cv_ld != x; then
2872 # Check if linker supports --as-needed and --no-as-needed options
2873 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2874 gcc_cv_ld_as_needed=yes
2878 if test x"$gcc_cv_ld_as_needed" = xyes; then
2879 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2880 [Define if your linker supports --as-needed and --no-as-needed options.])
2884 powerpc64*-*-linux*)
2885 AC_CACHE_CHECK(linker support for omitting dot symbols,
2886 gcc_cv_ld_no_dot_syms,
2887 [gcc_cv_ld_no_dot_syms=no
2888 if test $in_tree_ld = yes ; then
2889 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2890 gcc_cv_ld_no_dot_syms=yes
2892 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2893 cat > conftest1.s <<EOF
2897 cat > conftest2.s <<EOF
2898 .section ".opd","aw"
2903 .quad .LEfoo,.TOC.@tocbase,0
2909 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2910 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2911 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2912 gcc_cv_ld_no_dot_syms=yes
2914 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2917 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2918 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2919 [Define if your PowerPC64 linker only needs function descriptor syms.])
2924 if test x$with_sysroot = x && test x$host = x$target \
2925 && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2926 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2927 [Define to PREFIX/include if cpp should also search that directory.])
2930 # Find out what GC implementation we want, or may, use.
2932 [ --with-gc={page,zone} choose the garbage collection mechanism to use
2939 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
2944 echo "Using $GGC for garbage collection."
2946 # Use the system's zlib library.
2948 zlibinc="-I\$(srcdir)/../zlib"
2949 AC_ARG_WITH(system-zlib,
2950 [ --with-system-zlib use installed libz],
2957 dnl Very limited version of automake's enable-maintainer-mode
2959 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2960 dnl maintainer-mode is disabled by default
2961 AC_ARG_ENABLE(maintainer-mode,
2962 [ --enable-maintainer-mode
2963 enable make rules and dependencies not useful
2964 (and sometimes confusing) to the casual installer],
2965 maintainer_mode=$enableval,
2968 AC_MSG_RESULT($maintainer_mode)
2970 if test "$maintainer_mode" = "yes"; then
2981 # Make empty files to contain the specs and options for each language.
2982 # Then add #include lines to for a compiler that has specs and/or options.
2987 for subdir in . $subdirs
2989 if test -f $srcdir/$subdir/lang.opt; then
2990 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
2992 if test -f $srcdir/$subdir/lang-specs.h; then
2993 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
2995 if test -f $srcdir/$subdir/$subdir-tree.def; then
2996 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3000 # These (without "all_") are set in each config-lang.in.
3001 # `language' must be a single word so is spelled singularly.
3006 all_outputs='Makefile gccbug mklibgcc mkheaders libada-mk'
3007 # List of language makefile fragments.
3009 # List of language subdirectory makefiles. Deprecated.
3011 # Files for gengtype
3012 all_gtfiles="$target_gtfiles"
3013 # Files for gengtype with language
3014 all_gtfiles_files_langs=
3015 all_gtfiles_files_files=
3017 # Add the language fragments.
3018 # Languages are added via two mechanisms. Some information must be
3019 # recorded in makefile variables, these are defined in config-lang.in.
3020 # We accumulate them and plug them into the main Makefile.
3021 # The other mechanism is a set of hooks for each of the main targets
3022 # like `clean', `install', etc.
3024 language_hooks="Make-hooks"
3034 . ${srcdir}/$s/config-lang.in
3035 if test "x$language" = x
3037 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3040 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3041 if test -f ${srcdir}/$s/Makefile.in
3042 then all_lang_makefiles="$s/Makefile"
3044 all_languages="$all_languages $language"
3045 if test "x$boot_language" = xyes
3047 all_boot_languages="$all_boot_languages $language"
3049 all_compilers="$all_compilers $compilers"
3050 all_stagestuff="$all_stagestuff $stagestuff"
3051 all_outputs="$all_outputs $outputs"
3052 all_gtfiles="$all_gtfiles $gtfiles"
3055 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3056 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3060 # Pick up gtfiles for c
3063 . ${srcdir}/c-config-lang.in
3064 all_gtfiles="$all_gtfiles $gtfiles"
3067 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3068 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3072 for language in $all_languages
3074 check_languages="$check_languages check-$language"
3077 # We link each language in with a set of hooks, reached indirectly via
3082 target_list="all.build all.cross start.encap rest.encap tags \
3083 install-normal install-common install-man \
3084 uninstall info man srcextra srcman srcinfo \
3085 mostlyclean clean distclean maintainer-clean \
3086 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3087 for t in $target_list
3090 for lang in $all_languages
3094 echo "lang.$t: $x" >> Make-hooks
3103 echo "dir ." > .gdbinit
3104 echo "dir ${srcdir}" >> .gdbinit
3105 if test x$gdb_needs_out_file_path = xyes
3107 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3109 if test "x$subdirs" != x; then
3112 echo "dir ${srcdir}/$s" >> .gdbinit
3115 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3117 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3118 # absolute path for gcc_tooldir based on inserting the number of up-directory
3119 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3120 # $(libsubdir)/@(unlibsubdir) based path.
3121 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3122 # make and thus we'd get different behavior depending on where we built the
3124 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3125 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3127 changequote(<<, >>)dnl
3128 # An explanation of the sed strings:
3129 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3130 # -e 's|/$||' match a trailing forward slash and eliminates it
3131 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3132 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3134 # (*) Note this pattern overwrites the first character of the string
3135 # with a forward slash if one is not already present. This is not a
3136 # problem because the exact names of the sub-directories concerned is
3137 # unimportant, just the number of them matters.
3139 # The practical upshot of these patterns is like this:
3141 # prefix exec_prefix result
3142 # ------ ----------- ------
3144 # /foo/ /foo/bar ../
3145 # /foo /foo/bar/ ../
3146 # /foo/ /foo/bar/ ../
3147 # /foo /foo/bar/ugg ../../
3150 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3151 changequote([, ])dnl
3153 AC_SUBST(gcc_tooldir)
3156 # Find a directory in which to install a shared libgcc.
3158 AC_ARG_ENABLE(version-specific-runtime-libs,
3159 [ --enable-version-specific-runtime-libs
3160 specify that runtime libraries should be
3161 installed in a compiler-specific directory])
3163 AC_ARG_WITH(slibdir,
3164 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3165 slibdir="$with_slibdir",
3166 if test "${enable_version_specific_runtime_libs+set}" = set; then
3167 slibdir='$(libsubdir)'
3168 elif test "$host" != "$target"; then
3169 slibdir='$(build_tooldir)/lib'
3175 objdir=`${PWDCMD-pwd}`
3178 # Substitute configuration variables
3181 AC_SUBST(all_boot_languages)
3182 AC_SUBST(all_compilers)
3183 AC_SUBST(all_gtfiles)
3184 AC_SUBST(all_gtfiles_files_langs)
3185 AC_SUBST(all_gtfiles_files_files)
3186 AC_SUBST(all_lang_makefrags)
3187 AC_SUBST(all_lang_makefiles)
3188 AC_SUBST(all_languages)
3189 AC_SUBST(all_stagestuff)
3190 AC_SUBST(build_exeext)
3191 AC_SUBST(build_install_headers_dir)
3192 AC_SUBST(build_xm_file_list)
3193 AC_SUBST(build_xm_include_list)
3194 AC_SUBST(build_xm_defines)
3195 AC_SUBST(check_languages)
3196 AC_SUBST(cc_set_by_configure)
3197 AC_SUBST(quoted_cc_set_by_configure)
3198 AC_SUBST(cpp_install_dir)
3199 AC_SUBST(xmake_file)
3200 AC_SUBST(tmake_file)
3201 AC_SUBST(extra_gcc_objs)
3202 AC_SUBST(extra_headers_list)
3203 AC_SUBST(extra_objs)
3204 AC_SUBST(extra_parts)
3205 AC_SUBST(extra_passes)
3206 AC_SUBST(extra_programs)
3207 AC_SUBST(float_h_file)
3208 AC_SUBST(gcc_config_arguments)
3209 AC_SUBST(gcc_gxx_include_dir)
3210 AC_SUBST(libstdcxx_incdir)
3211 AC_SUBST(gcc_version)
3212 AC_SUBST(gcc_version_full)
3213 AC_SUBST(gcc_version_trigger)
3214 AC_SUBST(host_exeext)
3215 AC_SUBST(host_xm_file_list)
3216 AC_SUBST(host_xm_include_list)
3217 AC_SUBST(host_xm_defines)
3218 AC_SUBST(out_host_hook_obj)
3220 AC_SUBST(lang_opt_files)
3221 AC_SUBST(lang_specs_files)
3222 AC_SUBST(lang_tree_files)
3223 AC_SUBST(local_prefix)
3225 AC_SUBST(objc_boehm_gc)
3227 AC_SUBST(out_object_file)
3228 AC_SUBST(stage_prefix_set_by_configure)
3229 AC_SUBST(quoted_stage_prefix_set_by_configure)
3230 AC_SUBST(symbolic_link)
3231 AC_SUBST(thread_file)
3232 AC_SUBST(tm_file_list)
3233 AC_SUBST(tm_include_list)
3234 AC_SUBST(tm_defines)
3235 AC_SUBST(tm_p_file_list)
3236 AC_SUBST(tm_p_include_list)
3237 AC_SUBST(xm_file_list)
3238 AC_SUBST(xm_include_list)
3239 AC_SUBST(xm_defines)
3240 AC_SUBST(c_target_objs)
3241 AC_SUBST(cxx_target_objs)
3242 AC_SUBST(target_cpu_default)
3244 AC_SUBST_FILE(language_hooks)
3246 # If it doesn't already exist, create document directory
3247 echo "checking for the document directory." 1>&2
3248 if test -d doc ; then
3255 if test x${build} = x${host} ; then
3256 if test x${host} = x${target} ; then
3257 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3259 echo "Links are now set up to build a cross-compiler" 1>&2
3260 echo " from ${host} to ${target}." 1>&2
3263 if test x${host} = x${target} ; then
3264 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3265 echo " for ${target}." 1>&2
3267 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3268 echo " from ${host} to ${target}." 1>&2
3272 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3273 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3275 # Configure the subdirectories
3276 # AC_CONFIG_SUBDIRS($subdirs)
3278 # Create the Makefile
3279 # and configure language subdirectories
3280 AC_CONFIG_FILES($all_outputs)
3282 AC_CONFIG_COMMANDS([default],
3284 case ${CONFIG_HEADERS} in
3285 *auto-host.h:config.in*)
3288 # Make sure all the subdirs exist.
3291 test -d $d || mkdir $d
3293 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3294 # bootstrapping and the installation procedure can still use
3295 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3296 # FLAGS_TO_PASS has been modified to solve the problem there.
3297 # This is virtually a duplicate of what happens in configure.lang; we do
3298 # an extra check to make sure this only happens if ln -s can be used.
3299 if test "$symbolic_link" = "ln -s"; then
3300 for d in ${subdirs} ; do
3301 STARTDIR=`${PWDCMD-pwd}`
3303 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3306 $symbolic_link ../$t $t 2>/dev/null
3313 symbolic_link='$symbolic_link'