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, 51 Franklin Street, Fifth Floor, Boston, MA
24 # --------------------------------
25 # Initialization and sanity checks
26 # --------------------------------
30 AC_CONFIG_SRCDIR(tree.c)
31 AC_CONFIG_HEADER(auto-host.h:config.in)
33 gcc_version=`cat $srcdir/BASE-VER`
35 # Determine the host, build, and target systems
40 # Determine the noncanonical target name, for directory use.
41 ACX_NONCANONICAL_TARGET
43 # Determine the target- and build-specific subdirectories
46 # Set program_transform_name
49 # Check for bogus environment variables.
50 # Test if LIBRARY_PATH contains the notation for the current directory
51 # since this would lead to problems installing/building glibc.
52 # LIBRARY_PATH contains the current directory if one of the following
54 # - one of the terminals (":" and ";") is the first or last sign
55 # - two terminals occur directly after each other
56 # - the path contains an element with a dot in it
57 AC_MSG_CHECKING(LIBRARY_PATH variable)
59 case ${LIBRARY_PATH} in
60 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
61 library_path_setting="contains current directory"
64 library_path_setting="ok"
68 AC_MSG_RESULT($library_path_setting)
69 if test "$library_path_setting" != "ok"; then
71 *** LIBRARY_PATH shouldn't contain the current directory when
72 *** building gcc. Please change the environment variable
73 *** and run configure again.])
76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
77 # since this would lead to problems installing/building glibc.
78 # GCC_EXEC_PREFIX contains the current directory if one of the following
80 # - one of the terminals (":" and ";") is the first or last sign
81 # - two terminals occur directly after each other
82 # - the path contains an element with a dot in it
83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
85 case ${GCC_EXEC_PREFIX} in
86 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
87 gcc_exec_prefix_setting="contains current directory"
90 gcc_exec_prefix_setting="ok"
94 AC_MSG_RESULT($gcc_exec_prefix_setting)
95 if test "$gcc_exec_prefix_setting" != "ok"; then
97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
98 *** building gcc. Please change the environment variable
99 *** and run configure again.])
106 # Specify the local prefix
108 AC_ARG_WITH(local-prefix,
109 [ --with-local-prefix=DIR specifies directory to put local include],
110 [case "${withval}" in
111 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
113 *) local_prefix=$with_local_prefix ;;
116 # Default local prefix if it is empty
117 if test x$local_prefix = x; then
118 local_prefix=/usr/local
121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
122 # passed in by the toplevel make and thus we'd get different behavior
123 # depending on where we built the sources.
125 # Specify the g++ header file directory
126 AC_ARG_WITH(gxx-include-dir,
127 [ --with-gxx-include-dir=DIR
128 specifies directory to put g++ header files],
129 [case "${withval}" in
130 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
132 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
135 if test x${gcc_gxx_include_dir} = x; then
136 if test x${enable_version_specific_runtime_libs} = xyes; then
137 gcc_gxx_include_dir='${libsubdir}/include/c++'
139 libstdcxx_incdir='c++/$(version)'
140 changequote(<<, >>)dnl
141 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
146 AC_ARG_WITH(cpp_install_dir,
147 [ --with-cpp-install-dir=DIR
148 install the user visible C preprocessor in DIR
149 (relative to PREFIX) as well as PREFIX/bin],
150 [if test x$withval = xyes; then
151 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
152 elif test x$withval != xno; then
153 cpp_install_dir=$withval
156 # We would like to our source tree to be readonly. However when releases or
157 # pre-releases are generated, the flex/bison generated files as well as the
158 # various formats of manuals need to be included along with the rest of the
159 # sources. Therefore we have --enable-generated-files-in-srcdir to do
162 AC_MSG_CHECKING([whether to place generated files in the source directory])
163 dnl generated-files-in-srcdir is disabled by default
164 AC_ARG_ENABLE(generated-files-in-srcdir,
165 [ --enable-generated-files-in-srcdir
166 put copies of generated files in source dir
167 intended for creating source tarballs for users
168 without texinfo bison or flex.],
169 generated_files_in_srcdir=$enableval,
170 generated_files_in_srcdir=no)
172 AC_MSG_RESULT($generated_files_in_srcdir)
174 if test "$generated_files_in_srcdir" = "yes"; then
181 # -------------------
182 # Find default linker
183 # -------------------
187 [ --with-gnu-ld arrange to work with GNU ld.],
188 gnu_ld_flag="$with_gnu_ld",
191 # With pre-defined ld
193 [ --with-ld arrange to use the specified ld (full pathname)],
194 DEFAULT_LINKER="$with_ld")
195 if test x"${DEFAULT_LINKER+set}" = x"set"; then
196 if test ! -x "$DEFAULT_LINKER"; then
197 AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
198 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
201 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
202 [Define to enable the use of a default linker.])
205 AC_MSG_CHECKING([whether a default linker was specified])
206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
207 if test x"$gnu_ld_flag" = x"no"; then
208 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
210 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
216 # With demangler in GNU ld
217 AC_ARG_WITH(demangler-in-ld,
218 [ --with-demangler-in-ld try to use demangler in GNU ld.],
219 demangler_in_ld="$with_demangler_in_ld",
222 # ----------------------
223 # Find default assembler
224 # ----------------------
228 [ --with-gnu-as arrange to work with GNU as],
229 gas_flag="$with_gnu_as",
233 [ --with-as arrange to use the specified as (full pathname)],
234 DEFAULT_ASSEMBLER="$with_as")
235 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
236 if test ! -x "$DEFAULT_ASSEMBLER"; then
237 AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
238 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
241 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
242 [Define to enable the use of a default assembler.])
245 AC_MSG_CHECKING([whether a default assembler was specified])
246 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
247 if test x"$gas_flag" = x"no"; then
248 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
250 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
260 # If a non-executable a.out is present (e.g. created by GNU as above even if
261 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
262 # file, even when creating an executable, so an execution test fails.
263 # Remove possible default executable files to avoid this.
265 # FIXME: This really belongs into AC_PROG_CC and can be removed once
266 # Autoconf includes it.
267 rm -f a.out a.exe b.out
269 # Find the native compiler
272 # autoconf is lame and doesn't give us any substitution variable for this.
273 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
274 NO_MINUS_C_MINUS_O=yes
276 OUTPUT_OPTION='-o $@'
278 AC_SUBST(NO_MINUS_C_MINUS_O)
279 AC_SUBST(OUTPUT_OPTION)
281 # -------------------------
282 # Check C compiler features
283 # -------------------------
288 # sizeof(char) is 1 by definition.
289 AC_CHECK_SIZEOF(void *)
290 AC_CHECK_SIZEOF(short)
292 AC_CHECK_SIZEOF(long)
293 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
294 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
296 # ---------------------
297 # Warnings and checking
298 # ---------------------
300 # Check $CC warning features (if it's GCC).
301 # We want to use -pedantic, but we don't want warnings about
304 # So, we only use -pedantic if we can disable those warnings.
307 [whether ${CC} accepts -Wno-long-long],
308 [ac_cv_prog_cc_w_no_long_long],
309 [save_CFLAGS="$CFLAGS"
310 CFLAGS="-Wno-long-long"
311 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
312 [ac_cv_prog_cc_w_no_long_long=yes],
313 [ac_cv_prog_cc_w_no_long_long=no])
314 CFLAGS="$save_CFLAGS"
318 [whether ${CC} accepts -Wno-variadic-macros],
319 [ac_cv_prog_cc_w_no_variadic_macros],
320 [save_CFLAGS="$CFLAGS"
321 CFLAGS="-Wno-variadic-macros"
322 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
323 [ac_cv_prog_cc_w_no_variadic_macros=yes],
324 [ac_cv_prog_cc_w_no_variadic_macros=no])
325 CFLAGS="$save_CFLAGS"
329 if test $ac_cv_prog_cc_w_no_long_long = yes \
330 && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
331 strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
334 # Add -Wold-style-definition if it's accepted
336 [whether ${CC} accepts -Wold-style-definition],
337 [ac_cv_prog_cc_w_old_style_definition],
338 [save_CFLAGS="$CFLAGS"
339 CFLAGS="-Wold-style-definition"
340 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
341 [ac_cv_prog_cc_w_old_style_definition=yes],
342 [ac_cv_prog_cc_w_old_style_definition=no])
343 CFLAGS="$save_CFLAGS"
345 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
346 strict1_warn="${strict1_warn} -Wold-style-definition"
349 # Add -Wmissing-format-attribute if it's accepted
351 [whether ${CC} accepts -Wmissing-format-attribute],
352 [ac_cv_prog_cc_w_missing_format_attribute],
353 [save_CFLAGS="$CFLAGS"
354 CFLAGS="-Wmissing-format-attribute"
355 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
356 [ac_cv_prog_cc_w_missing_format_attribute=yes],
357 [ac_cv_prog_cc_w_missing_format_attribute=no])
358 CFLAGS="$save_CFLAGS"
360 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
361 strict1_warn="${strict1_warn} -Wmissing-format-attribute"
364 # Enable -Werror, period.
365 AC_ARG_ENABLE(werror_always,
366 [ --enable-werror-always enable -Werror always], [],
367 [enable_werror_always=no])
368 if test x${enable_werror_always} = xyes ; then
369 strict1_warn="${strict1_warn} -Werror"
373 AC_SUBST(strict1_warn)
375 # If the native compiler is GCC, we can enable warnings even in stage1.
376 # That's useful for people building cross-compilers, or just running a
379 if test "x$GCC" = "xyes"; then
380 warn_cflags='$(GCC_WARN_CFLAGS)'
382 AC_SUBST(warn_cflags)
384 # Enable -Werror in bootstrap stage2 and later.
386 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
389 AC_ARG_ENABLE(werror,
390 [ --enable-werror enable -Werror in bootstrap stage2 and later], [],
391 [if test x$is_release = x ; then
392 # Default to "yes" on development branches.
395 # Default to "no" on release branches.
398 if test x$enable_werror = xyes ; then
403 # Enable expensive internal checks
404 AC_ARG_ENABLE(checking,
405 [ --enable-checking[=LIST]
406 enable expensive run-time checks. With LIST,
407 enable only specific categories of checks.
408 Categories are: yes,no,all,none,release.
409 Flags are: assert,fold,gc,gcac,misc,
410 rtlflag,rtl,runtime,tree,valgrind.],
411 [ac_checking_flags="${enableval}"],[
412 # Determine the default checks.
413 if test x$is_release = x ; then
414 ac_checking_flags=yes
416 ac_checking_flags=release
422 ac_gc_always_collect=
425 ac_runtime_checking=1
427 ac_valgrind_checking=
428 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
429 for check in $ac_checking_flags
432 # these set all the flags to specific states
433 yes) ac_assert_checking=1 ; ac_checking=1 ;
434 ac_fold_checking= ; ac_gc_checking=1 ;
435 ac_gc_always_collect= ; ac_rtl_checking= ;
436 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
437 ac_tree_checking=1 ; ac_valgrind_checking= ;;
438 no|none) ac_assert_checking= ; ac_checking= ;
439 ac_fold_checking= ; ac_gc_checking= ;
440 ac_gc_always_collect= ; ac_rtl_checking= ;
441 ac_rtlflag_checking= ; ac_runtime_checking= ;
442 ac_tree_checking= ; ac_valgrind_checking= ;;
443 all) ac_assert_checking=1 ; ac_checking=1 ;
444 ac_fold_checking=1 ; ac_gc_checking=1 ;
445 ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
446 ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
447 ac_tree_checking=1 ; ac_valgrind_checking= ;;
448 release) ac_assert_checking=1 ; ac_checking= ;
449 ac_fold_checking= ; ac_gc_checking= ;
450 ac_gc_always_collect= ; ac_rtl_checking= ;
451 ac_rtlflag_checking= ; ac_runtime_checking=1 ;
452 ac_tree_checking= ; ac_valgrind_checking= ;;
453 # these enable particular checks
454 assert) ac_assert_checking=1 ;;
455 fold) ac_fold_checking=1 ;;
456 gc) ac_gc_checking=1 ;;
457 gcac) ac_gc_always_collect=1 ;;
458 misc) ac_checking=1 ;;
459 rtl) ac_rtl_checking=1 ;;
460 rtlflag) ac_rtlflag_checking=1 ;;
461 runtime) ac_runtime_checking=1 ;;
462 tree) ac_tree_checking=1 ;;
463 valgrind) ac_valgrind_checking=1 ;;
464 *) AC_MSG_ERROR(unknown check category $check) ;;
470 if test x$ac_checking != x ; then
471 AC_DEFINE(ENABLE_CHECKING, 1,
472 [Define if you want more run-time sanity checks. This one gets a grab
473 bag of miscellaneous but relatively cheap checks.])
474 nocommon_flag=-fno-common
476 AC_SUBST(nocommon_flag)
477 if test x$ac_assert_checking != x ; then
478 AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
479 [Define if you want assertions enabled. This is a cheap check.])
481 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
482 if test x$ac_runtime_checking != x ; then
483 AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
484 [Define if you want runtime assertions enabled. This is a cheap check.])
486 if test x$ac_tree_checking != x ; then
487 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
488 [Define if you want all operations on trees (the basic data
489 structure of the front ends) to be checked for dynamic type safety
490 at runtime. This is moderately expensive. The tree browser debugging
491 routines will also be enabled by this option.
493 TREEBROWSER=tree-browser.o
495 AC_SUBST(TREEBROWSER)
496 if test x$ac_rtl_checking != x ; then
497 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
498 [Define if you want all operations on RTL (the basic data structure
499 of the optimizer and back end) to be checked for dynamic type safety
500 at runtime. This is quite expensive.])
502 if test x$ac_rtlflag_checking != x ; then
503 AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
504 [Define if you want RTL flag accesses to be checked against the RTL
505 codes that are supported for each access macro. This is relatively
508 if test x$ac_gc_checking != x ; then
509 AC_DEFINE(ENABLE_GC_CHECKING, 1,
510 [Define if you want the garbage collector to do object poisoning and
511 other memory allocation checks. This is quite expensive.])
513 if test x$ac_gc_always_collect != x ; then
514 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
515 [Define if you want the garbage collector to operate in maximally
516 paranoid mode, validating the entire heap and collecting garbage at
517 every opportunity. This is extremely expensive.])
519 if test x$ac_fold_checking != x ; then
520 AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
521 [Define if you want fold checked that it never destructs its argument.
522 This is quite expensive.])
524 valgrind_path_defines=
527 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
528 dnl # an if statement. This was the source of very frustrating bugs
529 dnl # in converting to autoconf 2.5x!
530 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
532 if test x$ac_valgrind_checking != x ; then
533 # It is certainly possible that there's valgrind but no valgrind.h.
534 # GCC relies on making annotations so we must have both.
535 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
536 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
537 [[#include <valgrind/memcheck.h>
538 #ifndef VALGRIND_DISCARD
539 #error VALGRIND_DISCARD not defined
541 [gcc_cv_header_valgrind_memcheck_h=yes],
542 [gcc_cv_header_valgrind_memcheck_h=no])
543 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
544 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
545 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
546 [[#include <memcheck.h>
547 #ifndef VALGRIND_DISCARD
548 #error VALGRIND_DISCARD not defined
550 [gcc_cv_header_memcheck_h=yes],
551 [gcc_cv_header_memcheck_h=no])
552 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
553 AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
554 [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
555 if test "x$valgrind_path" = "x" \
556 || (test $have_valgrind_h = no \
557 && test $gcc_cv_header_memcheck_h = no \
558 && test $gcc_cv_header_valgrind_memcheck_h = no); then
559 AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
561 valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
562 valgrind_command="$valgrind_path -q"
563 AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
564 [Define if you want to run subprograms and generated programs
565 through valgrind (a memory checker). This is extremely expensive.])
566 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
567 AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
568 [Define if valgrind's valgrind/memcheck.h header is installed.])
570 if test $gcc_cv_header_memcheck_h = yes; then
571 AC_DEFINE(HAVE_MEMCHECK_H, 1,
572 [Define if valgrind's memcheck.h header is installed.])
575 AC_SUBST(valgrind_path_defines)
576 AC_SUBST(valgrind_command)
578 AC_ARG_ENABLE(mapped-location,
579 [ --enable-mapped-location location_t is fileline integer cookie],,
580 enable_mapped_location=no)
582 if test "$enable_mapped_location" = yes ; then
583 AC_DEFINE(USE_MAPPED_LOCATION, 1,
584 [Define if location_t is fileline integer cookie.])
587 # Enable code coverage collection
588 AC_ARG_ENABLE(coverage,
589 [ --enable-coverage[=LEVEL]
590 enable compiler's code coverage collection.
591 Use to measure compiler performance and locate
592 unused parts of the compiler. With LEVEL, specify
593 optimization. Values are opt, noopt,
595 [case "${enableval}" in
597 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
600 coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
603 # a.k.a. --disable-coverage
607 AC_MSG_ERROR(unknown coverage setting $enableval)
611 AC_SUBST(coverage_flags)
613 AC_ARG_ENABLE(gather-detailed-mem-stats,
614 [ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
615 [enable_gather_detailed_mem_stats=no])
616 if test x$enable_gather_detailed_mem_stats = xyes ; then
617 AC_DEFINE(GATHER_STATISTICS, 1,
618 [Define to enable detailed memory allocation stats gathering.])
621 # -------------------------------
622 # Miscenalleous configure options
623 # -------------------------------
627 [ --with-stabs arrange to use stabs instead of host debug format],
631 # Determine whether or not multilibs are enabled.
632 AC_ARG_ENABLE(multilib,
633 [ --enable-multilib enable library support for multiple ABIs],
634 [], [enable_multilib=yes])
635 AC_SUBST(enable_multilib)
637 # Enable __cxa_atexit for C++.
638 AC_ARG_ENABLE(__cxa_atexit,
639 [ --enable-__cxa_atexit enable __cxa_atexit for C++],
643 # Pass with no value to take the default
644 # Pass with a value to specify a thread package
645 AC_ARG_ENABLE(threads,
646 [ --enable-threads enable thread usage for target GCC
647 --enable-threads=LIB use LIB thread package for target GCC],,
650 AC_ARG_ENABLE(objc-gc,
651 [ --enable-objc-gc enable the use of Boehm's garbage collector with
652 the GNU Objective-C runtime],
653 if test x$enable_objc_gc = xno; then
661 [ --with-dwarf2 force the default debug format to be DWARF 2],
662 dwarf2="$with_dwarf2",
665 AC_ARG_ENABLE(shared,
666 [ --disable-shared don't provide a shared libgcc],
668 case $enable_shared in
672 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
673 for pkg in $enableval; do
674 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
681 ], [enable_shared=yes])
682 AC_SUBST(enable_shared)
684 AC_ARG_WITH(build-sysroot,
685 [ --with-build-sysroot=sysroot
686 use sysroot as the system root during the build])
689 [ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
691 case ${with_sysroot} in
692 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
693 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
696 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
697 CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
698 if test "x$with_build_sysroot" != x; then
699 build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
701 build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
704 if test "x$exec_prefix" = xNONE; then
705 if test "x$prefix" = xNONE; then
706 test_prefix=/usr/local
711 test_prefix=$exec_prefix
713 case ${TARGET_SYSTEM_ROOT} in
714 "${test_prefix}"|"${test_prefix}/"*|\
715 '${exec_prefix}'|'${exec_prefix}/'*)
716 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
717 TARGET_SYSTEM_ROOT_DEFINE="$t"
722 TARGET_SYSTEM_ROOT_DEFINE=
723 CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
725 AC_SUBST(TARGET_SYSTEM_ROOT)
726 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
727 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
729 # Build with intermodule optimisations
730 AC_ARG_ENABLE(intermodule,
731 [ --enable-intermodule build the compiler in one step],
732 [case ${enable_intermodule} in
733 yes) onestep="-onestep";;
739 # Sanity check enable_languages in case someone does not run the toplevel
740 # configure # script.
741 AC_ARG_ENABLE(languages,
742 [ --enable-languages=LIST specify which front-ends to build],
743 [case ,${enable_languages}, in
745 # go safe -- we cannot be much sure without the toplevel
747 # analysis of which target libs are present and usable
751 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
756 enable_languages=c,${enable_languages}
759 [enable_languages=c])
762 for lang in ${srcdir}/*/config-lang.in
765 # The odd quoting in the next line works around
766 # an apparent bug in bash 1.12 on linux.
768 ${srcdir}/[*]/config-lang.in) ;;
770 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
771 if test "x$lang_alias" = x
773 echo "$lang doesn't set \$language." 1>&2
776 case ",$enable_languages," in
778 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
786 # -------------------------
787 # Checks for other programs
788 # -------------------------
792 # Find some useful tools
794 # We need awk to create options.c and options.h.
795 # Bail out if it's missing.
797 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
805 # By default, the Darwin ranlib will not treat common symbols as
806 # definitions when building the archive table of contents. Other
807 # ranlibs do that; pass an option to the Darwin ranlib that makes
808 # it behave similarly.
814 AC_SUBST(ranlib_flags)
818 # See if cmp has --ignore-initial.
819 gcc_AC_PROG_CMP_IGNORE_INITIAL
821 # See if we have the mktemp command.
822 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
824 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
826 # See if makeinfo has been installed and is modern enough
827 # that we can use it.
828 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
829 [GNU texinfo.* \([0-9][0-9.]*\)],
831 if test $gcc_cv_prog_makeinfo_modern = no; then
832 MAKEINFO="$MISSING makeinfo"
834 *** Makeinfo is missing or too old.
835 *** Info documentation will not be built.])
842 # Is pod2man recent enough to regenerate manpages?
843 AC_MSG_CHECKING([for recent Pod::Man])
844 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
846 GENERATED_MANPAGES=generated-manpages
851 AC_SUBST(GENERATED_MANPAGES)
854 dnl Don't use AC_PROG_LEX; we insist on flex.
855 dnl LEXLIB is not useful in gcc.
856 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
859 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
861 # Binutils are not build modules, unlike bison/flex/makeinfo. So we
862 # check for build == host before using them.
865 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
866 && test -d ../binutils ; then
867 NM='$(objdir)/../binutils/nm-new'
869 AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
873 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
874 && test -d ../binutils ; then
875 AR='$(objdir)/../binutils/ar'
877 AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
881 # --------------------
882 # Checks for C headers
883 # --------------------
885 AC_MSG_CHECKING(for GNU C library)
886 AC_CACHE_VAL(gcc_cv_glibc,
887 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
888 [[#include <features.h>]], [[
889 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
890 #error Not a GNU C library system
894 AC_MSG_RESULT($gcc_cv_glibc)
895 if test $gcc_cv_glibc = yes; then
896 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
899 # Need to reject headers which give warnings, so that the -Werror bootstrap
900 # works later. *sigh* This needs to come before all header checks.
907 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
908 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
909 sys/resource.h sys/param.h sys/times.h sys/stat.h \
910 direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
912 # Check for thread headers.
913 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
914 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
916 # These tests can't be done till we know if we have limits.h.
924 # Stage specific cflags for build.
930 stage1_cflags="-Wa,-J"
936 # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
937 # sources; use -no-cpp-precomp to get to GNU cpp.
938 # Apple's GCC has bugs in designated initializer handling, so disable
940 stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
943 AC_SUBST(stage1_cflags)
945 # These libraries may be used by collect2.
946 # We may need a special search path to get them linked.
947 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
949 for libs in '' -lld -lmld \
950 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
951 '-L/usr/lib/cmplrs/cc3.11 -lmld'
954 AC_TRY_LINK_FUNC(ldopen,
955 [gcc_cv_collect2_libs="$libs"; break])
958 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
959 case $gcc_cv_collect2_libs in
961 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
963 AC_SUBST(COLLECT2_LIBS)
965 # When building Ada code on Alpha, we need exc_resume which is usually in
966 # -lexc. So test for it.
969 AC_SEARCH_LIBS(exc_resume, exc)
972 AC_SUBST(GNAT_LIBEXC)
974 # Some systems put ldexp and frexp in libm instead of libc; assume
975 # they're both in the same place. jcf-dump needs them.
978 AC_SEARCH_LIBS(ldexp, m)
983 # Use <inttypes.h> only if it exists,
984 # doesn't clash with <sys/types.h>, and declares intmax_t.
985 AC_MSG_CHECKING(for inttypes.h)
986 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
987 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
988 [[#include <sys/types.h>
989 #include <inttypes.h>]],
990 [[intmax_t i = -1;]])],
991 [gcc_cv_header_inttypes_h=yes],
992 [gcc_cv_header_inttypes_h=no])])
993 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
994 if test $gcc_cv_header_inttypes_h = yes; then
995 AC_DEFINE(HAVE_INTTYPES_H, 1,
996 [Define if you have a working <inttypes.h> header file.])
999 dnl Disabled until we have a complete test for buggy enum bitfields.
1000 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1002 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1003 ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1004 fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1005 fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1006 putchar_unlocked putc_unlocked)
1007 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
1008 sysconf strsignal getrusage nl_langinfo scandir alphasort \
1009 gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1012 if test x$ac_cv_func_mbstowcs = xyes; then
1013 AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1014 [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1020 [gcc_cv_func_mbstowcs_works=yes],
1021 [gcc_cv_func_mbstowcs_works=no],
1022 [gcc_cv_func_mbstowcs_works=yes])])
1023 if test x$gcc_cv_func_mbstowcs_works = xyes; then
1024 AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1025 [Define this macro if mbstowcs does not crash when its
1026 first argument is NULL.])
1030 AC_CHECK_TYPE(ssize_t, int)
1032 # Try to determine the array type of the second argument of getgroups
1033 # for the target system (int or gid_t).
1035 if test "${target}" = "${build}"; then
1036 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1039 # This condition may need some tweaking. It should include all
1040 # targets where the array type of the second argument of getgroups
1041 # is int and the type of gid_t is not equivalent to int.
1042 *-*-sunos* | *-*-ultrix*)
1043 TARGET_GETGROUPS_T=int
1046 TARGET_GETGROUPS_T=gid_t
1050 AC_SUBST(TARGET_GETGROUPS_T)
1052 gcc_AC_FUNC_PRINTF_PTR
1053 gcc_AC_FUNC_MMAP_BLACKLIST
1057 # Under VMS, vfork works very differently than on Unix. The standard test
1058 # won't work, and it isn't easily adaptable. It makes more sense to
1060 ac_cv_func_vfork_works=yes
1066 # Until we have in-tree GNU iconv:
1068 AC_SUBST(LIBICONV_DEP)
1074 # We will need to find libiberty.h and ansidecl.h
1075 saved_CFLAGS="$CFLAGS"
1076 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1077 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1078 strsignal strstr strverscmp \
1079 errno snprintf vsnprintf vasprintf malloc realloc calloc \
1080 free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1081 #include "ansidecl.h"
1082 #include "system.h"])
1084 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1085 #include "ansidecl.h"
1087 #ifdef HAVE_SYS_RESOURCE_H
1088 #include <sys/resource.h>
1092 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1093 #include "ansidecl.h"
1095 #ifdef HAVE_SYS_RESOURCE_H
1096 #include <sys/resource.h>
1098 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1099 [Define to \`long' if <sys/resource.h> doesn't define.])])
1101 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1102 # FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
1103 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1104 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1105 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1106 #include "ansidecl.h"
1115 gcc_AC_CHECK_DECLS(times, , ,[
1116 #include "ansidecl.h"
1118 #ifdef HAVE_SYS_TIMES_H
1119 #include <sys/times.h>
1123 # More time-related stuff.
1124 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1125 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1126 #include "ansidecl.h"
1128 #ifdef HAVE_SYS_TIMES_H
1129 #include <sys/times.h>
1131 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1132 if test $ac_cv_struct_tms = yes; then
1133 AC_DEFINE(HAVE_STRUCT_TMS, 1,
1134 [Define if <sys/times.h> defines struct tms.])
1137 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1138 # revisit after autoconf 2.50.
1139 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1140 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1141 #include "ansidecl.h"
1143 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1144 if test $gcc_cv_type_clock_t = yes; then
1145 AC_DEFINE(HAVE_CLOCK_T, 1,
1146 [Define if <time.h> defines clock_t.])
1149 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1150 CFLAGS="$saved_CFLAGS"
1152 gcc_AC_INITFINI_ARRAY
1154 # mkdir takes a single argument on some systems.
1155 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1163 # With Setjmp/Longjmp based exception handling.
1164 AC_ARG_ENABLE(sjlj-exceptions,
1165 [ --enable-sjlj-exceptions
1166 arrange to use setjmp/longjmp exception handling],
1167 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1168 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1169 [Define 0/1 to force the choice for exception handling model.])])
1171 # For platforms with the unwind ABI which includes an unwind library,
1172 # libunwind, we can choose to use the system libunwind.
1173 AC_ARG_WITH(system-libunwind,
1174 [ --with-system-libunwind use installed libunwind])
1176 # --------------------------------------------------------
1177 # Build, host, and target specific configuration fragments
1178 # --------------------------------------------------------
1180 # Collect build-machine-specific information.
1181 . ${srcdir}/config.build
1183 # Collect host-machine-specific information.
1184 . ${srcdir}/config.host
1188 # Collect target-machine-specific information.
1189 . ${srcdir}/config.gcc
1191 extra_objs="${host_extra_objs} ${extra_objs}"
1192 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1194 # Default the target-machine variables that were not explicitly set.
1195 if test x"$tm_file" = x
1196 then tm_file=$cpu_type/$cpu_type.h; fi
1198 if test x"$extra_headers" = x
1199 then extra_headers=; fi
1201 if test x$md_file = x
1202 then md_file=$cpu_type/$cpu_type.md; fi
1204 if test x$out_file = x
1205 then out_file=$cpu_type/$cpu_type.c; fi
1207 if test x"$tmake_file" = x
1208 then tmake_file=$cpu_type/t-$cpu_type
1211 if test x"$dwarf2" = xyes
1212 then tm_file="$tm_file tm-dwarf2.h"
1215 # Say what files are being used for the output code and MD file.
1216 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1217 echo "Using \`$srcdir/config/$md_file' as machine description file."
1219 # If any of the xm_file variables contain nonexistent files, warn
1220 # about them and drop them.
1223 for x in $build_xm_file; do
1224 if test -f $srcdir/config/$x
1226 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1232 for x in $host_xm_file; do
1233 if test -f $srcdir/config/$x
1235 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1241 for x in $xm_file; do
1242 if test -f $srcdir/config/$x
1244 else AC_MSG_WARN($srcdir/config/$x does not exist.)
1250 for f in $tm_file; do
1253 if test $count = ax; then
1254 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1256 echo "Using the following target machine macro files:"
1257 for f in $tm_file; do
1258 echo " $srcdir/config/$f"
1262 if test x$need_64bit_hwint = xyes; then
1263 AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1264 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1267 if test x$use_long_long_for_widest_fast_int = xyes; then
1268 AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1269 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1270 efficiently supported by the host hardware.])
1274 for f in $host_xm_file; do
1277 if test $count = a; then
1279 elif test $count = ax; then
1280 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1282 echo "Using the following host machine macro files:"
1283 for f in $host_xm_file; do
1284 echo " $srcdir/config/$f"
1287 echo "Using ${out_host_hook_obj} for host machine hooks."
1289 if test "$host_xm_file" != "$build_xm_file"; then
1291 for f in $build_xm_file; do
1294 if test $count = a; then
1296 elif test $count = ax; then
1297 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1299 echo "Using the following build machine macro files:"
1300 for f in $build_xm_file; do
1301 echo " $srcdir/config/$f"
1310 # Check if a valid thread package
1311 case ${enable_threads} in
1314 target_thread_file='single'
1318 target_thread_file='single'
1320 aix | dce | gnat | irix | posix | posix95 | rtems | \
1321 single | solaris | vxworks | win32 )
1322 target_thread_file=${enable_threads}
1325 echo "${enable_threads} is an unknown thread package" 1>&2
1330 if test x${thread_file} = x; then
1331 # No thread file set by target-specific clauses in config.gcc,
1332 # so use file chosen by default logic above
1333 thread_file=${target_thread_file}
1336 # Make gthr-default.h if we have a thread file.
1338 if test $thread_file != single; then
1339 rm -f gthr-default.h
1340 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1341 gthread_flags=-DHAVE_GTHR_DEFAULT
1343 AC_SUBST(gthread_flags)
1350 if test x$enable___cxa_atexit = xyes || \
1351 test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1352 if test x$host = x$target; then
1353 AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1354 [echo "__cxa_atexit can't be enabled on this target"])
1356 # We can't check for __cxa_atexit when building a cross, so assume
1360 if test x$use_cxa_atexit = xyes; then
1361 AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1362 [Define if you want to use __cxa_atexit, rather than atexit, to
1363 register C++ destructors for local statics and global objects.
1364 This is essential for fully standards-compliant handling of
1365 destructors, but requires __cxa_atexit in libc.])
1369 # Look for a file containing extra machine modes.
1370 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1371 extra_modes_file='$(srcdir)'/config/${extra_modes}
1372 AC_SUBST(extra_modes_file)
1373 AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1374 [Define to the name of a file containing a list of extra machine modes
1375 for this architecture.])
1378 # Convert extra_options into a form suitable for Makefile use.
1380 for f in $extra_options; do
1381 extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1383 AC_SUBST(extra_opt_files)
1385 # auto-host.h is the file containing items generated by autoconf and is
1386 # the first file included by config.h.
1387 # If host=build, it is correct to have bconfig include auto-host.h
1388 # as well. If host!=build, we are in error and need to do more
1389 # work to find out the build config parameters.
1390 if test x$host = x$build
1392 build_auto=auto-host.h
1394 # We create a subdir, then run autoconf in the subdir.
1395 # To prevent recursion we set host and build for the new
1396 # invocation of configure to the build for this invocation
1403 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1404 *) realsrcdir=../${srcdir};;
1406 saved_CFLAGS="${CFLAGS}"
1407 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1408 ${realsrcdir}/configure \
1409 --enable-languages=${enable_languages-all} \
1410 --target=$target_alias --host=$build_alias --build=$build_alias
1411 CFLAGS="${saved_CFLAGS}"
1413 # We just finished tests for the build machine, so rename
1414 # the file auto-build.h in the gcc directory.
1415 mv auto-host.h ../auto-build.h
1418 build_auto=auto-build.h
1420 AC_SUBST(build_subdir)
1422 tm_file="${tm_file} defaults.h"
1423 tm_p_file="${tm_p_file} tm-preds.h"
1424 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1425 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1426 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1427 # put this back in temporarily.
1428 xm_file="auto-host.h ansidecl.h ${xm_file}"
1435 # Compile in configure arguments.
1436 if test -f configargs.h ; then
1437 # Being re-configured.
1438 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1439 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1441 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1444 # Double all backslashes and backslash all quotes to turn
1445 # gcc_config_arguments into a C string.
1446 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1447 $gcc_config_arguments
1449 gcc_config_arguments_str=`cat conftest.out`
1452 cat > configargs.h <<EOF
1453 /* Generated automatically. */
1454 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1455 static const char thread_model[] = "$thread_file";
1457 static const struct {
1458 const char *name, *value;
1459 } configure_default_options[] = $configure_default_options;
1463 # Internationalization
1464 ZW_GNU_GETTEXT_SISTER_DIR
1466 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1467 # -liconv on the link line twice.
1468 case "$LIBINTL" in *$LIBICONV*)
1472 AC_ARG_ENABLE(secureplt,
1473 [ --enable-secureplt enable -msecure-plt by default for PowerPC],
1476 # Windows32 Registry support for specifying GCC installation paths.
1477 AC_ARG_ENABLE(win32-registry,
1478 [ --disable-win32-registry
1479 disable lookup of installation paths in the
1480 Registry on Windows hosts
1481 --enable-win32-registry enable registry lookup (default)
1482 --enable-win32-registry=KEY
1483 use KEY instead of GCC version as the last portion
1484 of the registry key],,)
1487 win32 | pe | cygwin* | mingw32* | uwin*)
1488 if test "x$enable_win32_registry" != xno; then
1489 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1492 if test "x$enable_win32_registry" != xno; then
1493 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1494 [Define to 1 if installation paths should be looked up in the Windows
1495 Registry. Ignored on non-Windows hosts.])
1497 if test "x$enable_win32_registry" != xyes \
1498 && test "x$enable_win32_registry" != x; then
1499 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1500 [Define to be the last component of the Windows registry key under which
1501 to look for installation paths. The full key used will be
1502 HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1503 The default is the GCC version number.])
1509 # Get an absolute path to the GCC top-level source directory
1510 holddir=`${PWDCMD-pwd}`
1512 topdir=`${PWDCMD-pwd}`
1515 # Conditionalize the makefile for this host machine.
1517 for f in ${host_xmake_file}
1519 if test -f ${srcdir}/config/$f
1521 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1525 # Conditionalize the makefile for this target machine.
1527 for f in ${tmake_file}
1529 if test -f ${srcdir}/config/$f
1531 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1534 tmake_file="${tmake_file_}"
1536 # If the host doesn't support symlinks, modify CC in
1537 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1538 # Otherwise, we can use "CC=$(CC)".
1542 cc_set_by_configure="\$(CC)"
1543 quoted_cc_set_by_configure="\$(CC)"
1544 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1545 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1548 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1549 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1550 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1551 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1555 # This is a terrible hack which will go away some day.
1556 host_cc_for_libada=${CC}
1557 AC_SUBST(host_cc_for_libada)
1559 out_object_file=`basename $out_file .c`.o
1561 tm_file_list="options.h"
1562 tm_include_list="options.h"
1563 for f in $tm_file; do
1566 tm_file_list="${tm_file_list} \$(srcdir)/$f"
1567 tm_include_list="${tm_include_list} $f"
1570 tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1571 tm_include_list="${tm_include_list} config/$f"
1578 for f in $tm_p_file; do
1581 tm_p_file_list="${tm_p_file_list} $f"
1582 tm_p_include_list="${tm_p_include_list} $f"
1585 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1586 tm_p_include_list="${tm_p_include_list} config/$f"
1592 for f in $xm_file; do
1595 xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1596 xm_include_list="${xm_include_list} $f"
1599 xm_file_list="${xm_file_list} $f"
1600 xm_include_list="${xm_include_list} $f"
1603 xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1604 xm_include_list="${xm_include_list} config/$f"
1610 host_xm_include_list=
1611 for f in $host_xm_file; do
1614 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1615 host_xm_include_list="${host_xm_include_list} $f"
1618 host_xm_file_list="${host_xm_file_list} $f"
1619 host_xm_include_list="${host_xm_include_list} $f"
1622 host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1623 host_xm_include_list="${host_xm_include_list} config/$f"
1629 for f in $build_xm_file; do
1632 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1633 build_xm_include_list="${build_xm_include_list} $f"
1635 auto-build.h | auto-host.h )
1636 build_xm_file_list="${build_xm_file_list} $f"
1637 build_xm_include_list="${build_xm_include_list} $f"
1640 build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1641 build_xm_include_list="${build_xm_include_list} config/$f"
1646 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1647 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1648 CROSS= AC_SUBST(CROSS)
1649 ALL=all.internal AC_SUBST(ALL)
1650 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1651 if test x$host != x$target
1653 CROSS="-DCROSS_COMPILE"
1655 SYSTEM_HEADER_DIR=$build_system_header_dir
1656 case "$host","$target" in
1657 # Darwin crosses can use the host system's libraries and headers,
1658 # because of the fat library support. Of course, it must be the
1659 # same version of Darwin on both sides. Allow the user to
1660 # just say --target=foo-darwin without a version number to mean
1661 # "the version on this system".
1662 *-*-darwin*,*-*-darwin*)
1663 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1664 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1665 if test $hostos = $targetos -o $targetos = darwin ; then
1667 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1672 i?86-*-*,x86_64-*-* \
1673 | powerpc*-*-*,powerpc64*-*-*)
1674 CROSS="$CROSS -DNATIVE_CROSS" ;;
1676 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1677 # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1678 SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1681 # If this is a cross-compiler that does not
1682 # have its own set of headers then define
1685 # If this is using newlib, without having the headers available now,
1686 # then define inhibit_libc in LIBGCC2_CFLAGS.
1687 # This prevents libgcc2 from containing any code which requires libc
1690 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1691 test x$with_newlib = xyes ; } &&
1692 { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1695 AC_SUBST(inhibit_libc)
1697 # When building gcc with a cross-compiler, we need to adjust things so
1698 # that the generator programs are still built with the native compiler.
1699 # Also, we cannot run fixincludes or fix-header.
1701 # These are the normal (build=host) settings:
1702 CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
1703 BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
1704 STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
1706 # Possibly disable fixproto, on a per-target basis.
1707 case ${use_fixproto} in
1712 STMP_FIXPROTO=stmp-fixproto
1715 AC_SUBST(STMP_FIXPROTO)
1717 # And these apply if build != host, or we are generating coverage data
1718 if test x$build != x$host || test "x$coverage_flags" != x
1720 BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1722 if test "x$TARGET_SYSTEM_ROOT" = x; then
1723 if test "x$STMP_FIXPROTO" != x; then
1724 STMP_FIXPROTO=stmp-install-fixproto
1729 # Expand extra_headers to include complete path.
1730 # This substitutes for lots of t-* files.
1732 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1733 for file in ${extra_headers} ; do
1734 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1737 # Define collect2 in Makefile.
1738 case $host_can_use_collect2 in
1740 *) collect2='collect2$(exeext)' ;;
1742 AC_SUBST([collect2])
1744 # Add a definition of USE_COLLECT2 if system wants one.
1745 case $use_collect2 in
1746 no) use_collect2= ;;
1749 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1750 xm_defines="${xm_defines} USE_COLLECT2"
1751 case $host_can_use_collect2 in
1753 AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1759 # ---------------------------
1760 # Assembler & linker features
1761 # ---------------------------
1763 # Identify the assembler which will work hand-in-glove with the newly
1764 # built GCC, so that we can examine its features. This is the assembler
1765 # which will be driven by the driver program.
1767 # If build != host, and we aren't building gas in-tree, we identify a
1768 # build->target assembler and hope that it will have the same features
1769 # as the host->target assembler we'll be using.
1772 gcc_cv_gas_major_version=
1773 gcc_cv_gas_minor_version=
1774 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1775 if test -x "$DEFAULT_ASSEMBLER"; then
1776 gcc_cv_as="$DEFAULT_ASSEMBLER"
1777 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1778 && test -f ../gas/Makefile \
1779 && test x$build = x$host; then
1780 # Single tree build which includes gas. We want to prefer it
1781 # over whatever linker top-level may have detected, since
1782 # we'll use what we're building after installation anyway.
1784 _gcc_COMPUTE_GAS_VERSION
1785 gcc_cv_as=../gas/as-new$build_exeext
1786 in_tree_gas_is_elf=no
1787 if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1788 || (grep 'obj_format = multi' ../gas/Makefile \
1789 && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1791 in_tree_gas_is_elf=yes
1793 m4_pattern_allow([AS_FOR_TARGET])dnl
1794 elif test -x as$build_exeext; then
1795 # Build using assembler in the current directory.
1796 gcc_cv_as=./as$build_exeext
1797 elif test -x "$AS_FOR_TARGET"; then
1798 gcc_cv_as="$AS_FOR_TARGET"
1799 elif test -x "$AS" && test x$host = x$target; then
1803 gcc_AC_CHECK_TOOL(gcc_cv_as, as, ORIGINAL_AS_FOR_TARGET)
1804 AC_MSG_CHECKING(what assembler to use)
1805 case $in_tree_gas in
1807 AC_MSG_RESULT("newly built gas")
1810 AC_MSG_RESULT($gcc_cv_as)
1814 # Identify the linker which will work hand-in-glove with the newly
1815 # built GCC, so that we can examine its features. This is the linker
1816 # which will be driven by the driver program.
1818 # If build != host, and we aren't building gas in-tree, we identify a
1819 # build->target linker and hope that it will have the same features
1820 # as the host->target linker we'll be using.
1823 gcc_cv_gld_major_version=
1824 gcc_cv_gld_minor_version=
1825 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1826 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1827 if test -x "$DEFAULT_LINKER"; then
1828 gcc_cv_ld="$DEFAULT_LINKER"
1829 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1830 && test -f ../ld/Makefile \
1831 && test x$build = x$host; then
1832 # Single tree build which includes ld. We want to prefer it
1833 # over whatever linker top-level may have detected, since
1834 # we'll use what we're building after installation anyway.
1836 in_tree_ld_is_elf=no
1837 if (grep 'EMUL = .*elf' ../ld/Makefile \
1838 || grep 'EMUL = .*linux' ../ld/Makefile \
1839 || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1840 in_tree_ld_is_elf=yes
1842 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
1845 gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1847 if test x$gcc_cv_gld_version != x; then
1852 gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1853 gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1855 gcc_cv_ld=../ld/ld-new$build_exeext
1856 elif test -x collect-ld$build_exeext; then
1857 # Build using linker in the current directory.
1858 gcc_cv_ld=./collect-ld$build_exeext
1859 elif test -x "$LD_FOR_TARGET"; then
1860 gcc_cv_ld="$LD_FOR_TARGET"
1861 elif test -x "$LD" && test x$host = x$target; then
1865 gcc_AC_CHECK_TOOL(gcc_cv_ld, ld, ORIGINAL_LD_FOR_TARGET)
1866 AC_MSG_CHECKING(what linker to use)
1869 AC_MSG_RESULT("newly built ld")
1872 AC_MSG_RESULT($gcc_cv_ld)
1876 # Figure out what nm we will be using.
1877 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1880 if test -f $gcc_cv_binutils_srcdir/configure.in \
1881 && test -f ../binutils/Makefile; then
1882 # Single tree build which includes binutils.
1884 gcc_cv_nm=../binutils/nm-new$build_exeext
1885 elif test -x nm$build_exeext; then
1886 gcc_cv_nm=./nm$build_exeext
1889 gcc_AC_CHECK_TOOL(gcc_cv_nm, nm, ORIGINAL_NM_FOR_TARGET)
1890 AC_MSG_CHECKING(what nm to use)
1892 yes) AC_MSG_RESULT("newly built nm") ;;
1893 no) AC_MSG_RESULT($gcc_cv_nm) ;;
1896 # Figure out what objdump we will be using.
1897 AC_MSG_CHECKING(what objdump to use)
1899 if test -x objdump$build_exeext; then
1900 gcc_cv_objdump=./objdump$build_exeext
1901 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1902 && test -f ../binutils/Makefile; then
1903 # Single tree build which includes binutils.
1905 gcc_cv_objdump=../binutils/objdump$build_exeext
1906 elif test "x$program_prefix" != xNONE; then
1907 gcc_cv_objdump=${program_prefix}objdump$build_exeext
1908 elif test x$build != x$host && test x$build != x$target; then
1909 gcc_cv_objdump=${target_noncanonical}-objdump$build_exeext
1911 gcc_cv_objdump=`echo objdump | \
1912 sed "${program_transform_name}"`$build_exeext
1914 case $in_tree_objdump in
1915 yes) AC_MSG_RESULT("newly built objdump") ;;
1916 no) AC_MSG_RESULT($gcc_cv_objdump) ;;
1919 # Figure out what assembler alignment features are present.
1920 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1924 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1925 [Define if your assembler supports .balign and .p2align.])])
1927 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1930 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1931 [Define if your assembler supports specifying the maximum number
1932 of bytes to skip when using the GAS .p2align command.])])
1934 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
1936 [conftest_label1: .word 0
1938 conftest_label2: .word 0
1940 [if test x$gcc_cv_nm != x; then
1941 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1942 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1943 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
1945 else gcc_cv_as_subsection_m1=yes
1947 rm -f conftest.nm1 conftest.nm2
1949 [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1950 [Define if your assembler supports .subsection and .subsection -1 starts
1951 emitting at the beginning of your section.])])
1953 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
1956 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
1958 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
1961 .NSUBSPA $CODE$,COMDAT],,
1962 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
1964 # .hidden needs to be supported in both the assembler and the linker,
1965 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
1966 # This is irritatingly difficult to feature test for; we have to check the
1967 # date string after the version number. If we've got an in-tree
1968 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
1970 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
1971 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
1976 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
1977 [if test $in_tree_ld = yes ; then
1979 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
1980 && test $in_tree_ld_is_elf = yes; then
1981 gcc_cv_ld_hidden=yes
1984 gcc_cv_ld_hidden=yes
1985 ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
1986 if echo "$ld_ver" | grep GNU > /dev/null; then
1988 ld_vers=`echo $ld_ver | sed -n \
1989 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1990 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1991 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1992 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1993 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1994 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p' \
1995 -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ ].*$,\1,p'`
1996 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
1997 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
1998 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
1999 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2000 if test 0"$ld_date" -lt 20020404; then
2001 if test -n "$ld_date"; then
2002 # If there was date string, but was earlier than 2002-04-04, fail
2004 elif test -z "$ld_vers"; then
2005 # If there was no date string nor ld version number, something is wrong
2008 test -z "$ld_vers_patch" && ld_vers_patch=0
2009 if test "$ld_vers_major" -lt 2; then
2011 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2012 gcc_cv_ld_hidden="no"
2013 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2021 hppa64*-*-hpux* | ia64*-*-hpux*)
2022 gcc_cv_ld_hidden=yes
2030 libgcc_visibility=no
2031 AC_SUBST(libgcc_visibility)
2032 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2033 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2034 libgcc_visibility=yes
2035 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2036 [Define if your assembler and linker support .hidden.])
2039 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2040 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2048 [# GAS versions before 2.11 do not support uleb128,
2049 # despite appearing to.
2050 # ??? There exists an elf-specific test that will crash
2051 # the assembler. Perhaps it's better to figure out whether
2052 # arbitrary sections are supported and try the test.
2053 as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2054 if echo "$as_ver" | grep GNU > /dev/null; then
2056 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2057 as_major=`echo $as_ver | sed 's/\..*//'`
2058 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2060 if test $as_major -eq 2 && test $as_minor -lt 11
2062 else gcc_cv_as_leb128=yes
2065 [AC_DEFINE(HAVE_AS_LEB128, 1,
2066 [Define if your assembler supports .sleb128 and .uleb128.])])
2068 # GAS versions up to and including 2.11.0 may mis-optimize
2070 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2078 .section .eh_frame,"aw",@progbits
2080 .4byte .LECIE1-.LSCIE1
2094 .4byte .LEFDE1-.LASFDE1
2096 .4byte .LASFDE1-__FRAME_BEGIN__
2104 [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2105 cat > conftest.lit <<EOF
2106 0000 10000000 00000000 017a0001 781a0004 .........z..x...
2107 0010 01000000 12000000 18000000 00000000 ................
2108 0020 08000000 04080000 0044 .........D @&t@
2110 cat > conftest.big <<EOF
2111 0000 00000010 00000000 017a0001 781a0004 .........z..x...
2112 0010 00000001 00000012 00000018 00000000 ................
2113 0020 00000008 04000000 0844 .........D @&t@
2115 # If the assembler didn't choke, and we can objdump,
2116 # and we got the correct data, then succeed.
2117 if test x$gcc_cv_objdump != x \
2118 && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2119 | tail -3 > conftest.got \
2120 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2121 || cmp conftest.big conftest.got > /dev/null 2>&1; }
2123 gcc_cv_as_eh_frame=yes
2124 elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2125 gcc_cv_as_eh_frame=buggy
2127 # Uh oh, what do we do now?
2128 gcc_cv_as_eh_frame=no
2131 if test $gcc_cv_as_eh_frame = buggy; then
2132 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2133 [Define if your assembler mis-optimizes .eh_frame data.])
2136 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2137 [elf,2,12,0], [--fatal-warnings],
2138 [.section .rodata.str, "aMS", @progbits, 1])
2139 if test $gcc_cv_as_shf_merge = no; then
2140 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2141 [elf,2,12,0], [--fatal-warnings],
2142 [.section .rodata.str, "aMS", %progbits, 1])
2144 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2145 [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2146 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2148 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2149 [elf,2,16,0], [--fatal-warnings],
2150 [.section .text,"axG",@progbits,.foo,comdat])
2151 if test $gcc_cv_as_comdat_group = yes; then
2152 gcc_cv_as_comdat_group_percent=no
2154 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2155 [elf,2,16,0], [--fatal-warnings],
2156 [.section .text,"axG",%progbits,.foo,comdat])
2158 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2160 if test 0"$ld_date" -lt 20050308; then
2161 if test -n "$ld_date"; then
2162 # If there was date string, but was earlier than 2005-03-08, fail
2164 elif test "$ld_vers_major" -lt 2; then
2166 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2170 if test $comdat_group = no; then
2171 gcc_cv_as_comdat_group=no
2172 gcc_cv_as_comdat_group_percent=no
2175 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2176 [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2177 [Define 0/1 if your assembler and linker support COMDAT groups.])
2179 # Thread-local storage - the check is heavily parametrized.
2188 .section ".tdata","awT",@progbits
2191 ldq $27,__tls_get_addr($29) !literal!1
2192 lda $16,foo($29) !tlsgd!1
2193 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
2194 ldq $27,__tls_get_addr($29) !literal!2
2195 lda $16,foo($29) !tlsldm!2
2196 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
2197 ldq $1,foo($29) !gotdtprel
2198 ldah $2,foo($29) !dtprelhi
2199 lda $3,foo($2) !dtprello
2200 lda $4,foo($29) !dtprel
2201 ldq $1,foo($29) !gottprel
2202 ldah $2,foo($29) !tprelhi
2203 lda $3,foo($2) !tprello
2204 lda $4,foo($29) !tprel'
2207 tls_as_opt=--fatal-warnings
2211 .section ".tdata","awT",@progbits
2223 .section ".tdata","awT",@progbits
2227 addil LT%foo-$tls_gdidx$,gp
2228 ldo RT%foo-$tls_gdidx$(%r1),%arg0
2231 addil LT%foo-$tls_ldidx$,gp
2233 ldo RT%foo-$tls_ldidx$(%r1),%arg0
2234 addil LR%foo-$tls_dtpoff$,%ret0
2235 ldo RR%foo-$tls_dtpoff$(%r1),%t1
2237 addil LT%foo-$tls_ieoff$,gp
2238 ldw RT%foo-$tls_ieoff$(%r1),%t2
2241 addil LR%foo-$tls_leoff$,%t1
2242 ldo RR%foo-$tls_leoff$(%r1),%t2'
2245 tls_as_opt=--fatal-warnings
2249 .section ".tdata","awT",@progbits
2253 leal foo@TLSGD(,%ebx,1), %eax
2254 leal foo@TLSLDM(%ebx), %eax
2255 leal foo@DTPOFF(%eax), %edx
2256 movl foo@GOTTPOFF(%ebx), %eax
2257 subl foo@GOTTPOFF(%ebx), %eax
2258 addl foo@GOTNTPOFF(%ebx), %eax
2259 movl foo@INDNTPOFF, %eax
2260 movl $foo@TPOFF, %eax
2261 subl $foo@TPOFF, %eax
2262 leal foo@NTPOFF(%ecx), %eax'
2265 tls_as_opt=--fatal-warnings
2269 .section ".tdata","awT",@progbits
2273 leaq foo@TLSGD(%rip), %rdi
2274 leaq foo@TLSLD(%rip), %rdi
2275 leaq foo@DTPOFF(%rax), %rdx
2276 movq foo@GOTTPOFF(%rip), %rax
2277 movq $foo@TPOFF, %rax'
2280 tls_as_opt=--fatal-warnings
2284 .section ".tdata","awT",@progbits
2287 addl r16 = @ltoff(@dtpmod(foo#)), gp
2288 addl r17 = @ltoff(@dtprel(foo#)), gp
2289 addl r18 = @ltoff(@tprel(foo#)), gp
2290 addl r19 = @dtprel(foo#), gp
2291 adds r21 = @dtprel(foo#), r13
2292 movl r23 = @dtprel(foo#)
2293 addl r20 = @tprel(foo#), gp
2294 adds r22 = @tprel(foo#), r13
2295 movl r24 = @tprel(foo#)'
2298 tls_as_opt=--fatal-warnings
2302 .section .tdata,"awT",@progbits
2306 addiu $4, $28, %tlsgd(x)
2307 addiu $4, $28, %tlsldm(x)
2308 lui $4, %dtprel_hi(x)
2309 addiu $4, $4, %dtprel_lo(x)
2310 lw $4, %gottprel(x)($28)
2311 lui $4, %tprel_hi(x)
2312 addiu $4, $4, %tprel_lo(x)'
2315 tls_as_opt='-32 --fatal-warnings'
2319 .section ".tdata","awT",@progbits
2327 addi 3,31,ld0@got@tlsgd
2329 addi 3,31,x1@got@tlsld
2332 addis 9,3,x2@dtprel@ha
2333 addi 9,9,x2@dtprel@l
2334 lwz 9,x3@got@tprel(31)
2337 addis 9,2,x2@tprel@ha
2338 addi 9,9,x2@tprel@l'
2341 tls_as_opt="-a32 --fatal-warnings"
2345 .section ".tdata","awT",@progbits
2353 addi 3,2,ld0@got@tlsgd
2359 addi 3,2,x1@got@tlsld
2365 addis 9,3,x2@dtprel@ha
2366 addi 9,9,x2@dtprel@l
2369 ld 9,x3@got@dtprel(2)
2375 tls_as_opt="-a64 --fatal-warnings"
2379 .section ".tdata","awT",@progbits
2388 l %r1,foo@GOTNTPOFF(%r12)
2389 l %r1,0(%r1):tls_load:foo
2390 bas %r14,0(%r1,%r13):tls_gdcall:foo
2391 bas %r14,0(%r1,%r13):tls_ldcall:foo'
2394 tls_as_opt="-m31 --fatal-warnings"
2398 .section ".tdata","awT",@progbits
2406 lg %r1,foo@GOTNTPOFF(%r12)
2407 larl %r1,foo@INDNTPOFF
2408 brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
2409 brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2412 tls_as_opt="-m64 -Aesame --fatal-warnings"
2414 sh-*-* | sh[34]-*-*)
2416 .section ".tdata","awT",@progbits
2426 tls_as_opt=--fatal-warnings
2430 sparc*-sun-solaris2.*)
2437 if test x$on_solaris = xyes && test x$gas_flag = xno; then
2439 .section ".tdata",#alloc,#write,#tls
2442 sethi %tgd_hi22(foo), %o0
2443 add %o0, %tgd_lo10(foo), %o1
2444 add %l7, %o1, %o0, %tgd_add(foo)
2445 call __tls_get_addr, %tgd_call(foo)
2446 sethi %tldm_hi22(foo), %l1
2447 add %l1, %tldm_lo10(foo), %l2
2448 add %l7, %l2, %o0, %tldm_add(foo)
2449 call __tls_get_addr, %tldm_call(foo)
2450 sethi %tldo_hix22(foo), %l3
2451 xor %l3, %tldo_lox10(foo), %l4
2452 add %o0, %l4, %l5, %tldo_add(foo)
2453 sethi %tie_hi22(foo), %o3
2454 add %o3, %tie_lo10(foo), %o3
2455 ld [%l7 + %o3], %o2, %tie_ld(foo)
2456 add %g7, %o2, %o4, %tie_add(foo)
2457 sethi %tle_hix22(foo), %l1
2458 xor %l1, %tle_lox10(foo), %o5
2459 ld [%g7 + %o5], %o1'
2464 .section ".tdata","awT",@progbits
2467 sethi %tgd_hi22(foo), %o0
2468 add %o0, %tgd_lo10(foo), %o1
2469 add %l7, %o1, %o0, %tgd_add(foo)
2470 call __tls_get_addr, %tgd_call(foo)
2471 sethi %tldm_hi22(foo), %l1
2472 add %l1, %tldm_lo10(foo), %l2
2473 add %l7, %l2, %o0, %tldm_add(foo)
2474 call __tls_get_addr, %tldm_call(foo)
2475 sethi %tldo_hix22(foo), %l3
2476 xor %l3, %tldo_lox10(foo), %l4
2477 add %o0, %l4, %l5, %tldo_add(foo)
2478 sethi %tie_hi22(foo), %o3
2479 add %o3, %tie_lo10(foo), %o3
2480 ld [%l7 + %o3], %o2, %tie_ld(foo)
2481 add %g7, %o2, %o4, %tie_add(foo)
2482 sethi %tle_hix22(foo), %l1
2483 xor %l1, %tle_lox10(foo), %o5
2484 ld [%g7 + %o5], %o1'
2487 tls_as_opt="-32 --fatal-warnings"
2492 if test -z "$tls_first_major"; then
2493 : # If we don't have a check, assume no support.
2495 gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2496 [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2497 [AC_DEFINE(HAVE_AS_TLS, 1,
2498 [Define if your assembler supports thread-local storage.])])
2501 # Target-specific assembler checks.
2503 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2504 gcc_cv_ld_static_dynamic=no
2505 if test $in_tree_ld = yes ; then
2506 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2507 gcc_cv_ld_static_dynamic=yes
2509 elif test x$gcc_cv_ld != x; then
2510 # Check if linker supports -Bstatic/-Bdynamic option
2511 if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2512 && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2513 gcc_cv_ld_static_dynamic=yes
2516 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2517 AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2518 [Define if your linker supports -Bstatic/-Bdynamic option.])
2520 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2522 if test x"$demangler_in_ld" = xyes; then
2523 AC_MSG_CHECKING(linker --demangle support)
2524 gcc_cv_ld_demangle=no
2525 if test $in_tree_ld = yes; then
2526 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2527 gcc_cv_ld_demangle=yes
2529 elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2530 # Check if the GNU linker supports --demangle option
2531 if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2532 gcc_cv_ld_demangle=yes
2535 if test x"$gcc_cv_ld_demangle" = xyes; then
2536 AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2537 [Define if your linker supports --demangle option.])
2539 AC_MSG_RESULT($gcc_cv_ld_demangle)
2543 # All TARGET_ABI_OSF targets.
2544 alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2545 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2546 gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2549 extbl $3, $2, $3 !lituse_bytoff!1
2550 ldq $2, a($29) !literal!1
2551 ldq $4, b($29) !literal!2
2552 ldq_u $3, 0($2) !lituse_base!1
2553 ldq $27, f($29) !literal!5
2554 jsr $26, ($27), f !lituse_jsr!5
2555 ldah $29, 0($26) !gpdisp!3
2556 lda $0, c($29) !gprel
2557 ldah $1, d($29) !gprelhigh
2558 lda $1, d($1) !gprellow
2559 lda $29, 0($29) !gpdisp!3],,
2560 [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2561 [Define if your assembler supports explicit relocations.])])
2562 gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2563 gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2566 ldq $27, a($29) !literal!1
2567 jsr $26, ($27), a !lituse_jsrdirect!1],,
2568 [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2569 [Define if your assembler supports the lituse_jsrdirect relocation.])])
2573 gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2574 gcc_cv_as_cris_no_mul_bug,[2,15,91],
2575 [-no-mul-bug-abort], [.text],,
2576 [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2577 [Define if your assembler supports the -no-mul-bug-abort option.])])
2581 gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2582 [.register %g2, #scratch],,
2583 [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2584 [Define if your assembler supports .register.])])
2586 gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2588 [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2589 [Define if your assembler supports -relax option.])])
2591 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2592 gcc_cv_as_sparc_ua_pcrel,,
2600 .uaword %r_disp32(foo)],
2601 [if test x$gcc_cv_ld != x \
2602 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2603 gcc_cv_as_sparc_ua_pcrel=yes
2606 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2607 [Define if your assembler and linker support unaligned PC relative relocs.])
2609 gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2610 gcc_cv_as_sparc_ua_pcrel_hidden,,
2615 .uaword %r_disp32(foo)
2616 .byte 0x32, 0x33, 0x34
2621 [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2622 && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2623 && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2624 | grep ' 31000000 07323334' > /dev/null 2>&1; then
2625 if $gcc_cv_objdump -R conftest 2> /dev/null \
2626 | grep 'DISP32' > /dev/null 2>&1; then
2629 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2633 [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2634 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2635 ]) # unaligned pcrel relocs
2637 gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2638 gcc_cv_as_sparc_offsetable_lo10,,
2641 or %g1, %lo(ab) + 12, %g1
2642 or %g1, %lo(ab + 12), %g1],
2643 [if test x$gcc_cv_objdump != x \
2644 && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2645 | grep ' 82106000 82106000' > /dev/null 2>&1; then
2646 gcc_cv_as_sparc_offsetable_lo10=yes
2648 [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2649 [Define if your assembler supports offsetable %lo().])])
2653 i[34567]86-*-* | x86_64-*-*)
2656 cygwin* | pe | mingw32*)
2657 # Used for DWARF 2 in PE
2658 gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2659 gcc_cv_as_ix86_pe_secrel32,
2665 [if test x$gcc_cv_ld != x \
2666 && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2667 gcc_cv_as_ix86_pe_secrel32=yes
2670 [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2671 [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2675 gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2676 gcc_cv_as_ix86_filds_fists,
2677 [2,9,0],, [filds mem; fists mem],,
2678 [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2679 [Define if your assembler uses the new HImode fild and fist notation.])])
2681 gcc_GAS_CHECK_FEATURE([cmov syntax],
2682 gcc_cv_as_ix86_cmov_sun_syntax,,,
2683 [cmovl.l %edx, %eax],,
2684 [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2685 [Define if your assembler supports the Sun syntax for cmov.])])
2687 # This one is used unconditionally by i386.[ch]; it is to be defined
2688 # to 1 if the feature is present, 0 otherwise.
2689 gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2690 gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2696 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2697 [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2698 [Define true if the assembler supports '.long foo@GOTOFF'.])
2702 gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2703 gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2705 addl r15 = @ltoffx(x#), gp
2707 ld8.mov r16 = [[r15]], x#],,
2708 [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2709 [Define if your assembler supports ltoffx and ldxmov relocations.])])
2715 *-*-aix*) conftest_s=' .machine "pwr5"
2719 gcc_GAS_CHECK_FEATURE([.machine directive support],
2720 gcc_cv_as_machine_directive,,,
2721 [ .machine ppc7400])
2722 if test x$gcc_cv_as_machine_directive != xyes; then
2723 echo "*** This target requires an assembler supporting \".machine\"" >&2
2724 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2725 test x$build = x$target && exit 1
2729 *) conftest_s=' .machine power4
2734 gcc_GAS_CHECK_FEATURE([mfcr field support],
2735 gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2737 [AC_DEFINE(HAVE_AS_MFCRF, 1,
2738 [Define if your assembler supports mfcr field.])])
2741 *-*-aix*) conftest_s=' .machine "pwr5"
2744 *) conftest_s=' .machine power5
2749 gcc_GAS_CHECK_FEATURE([popcntb support],
2750 gcc_cv_as_powerpc_popcntb, [2,17,0],,
2752 [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2753 [Define if your assembler supports popcntb field.])])
2756 *-*-aix*) conftest_s=' .csect .text[[PR]]
2758 addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2762 addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2763 *) conftest_s=' .text
2765 addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2768 gcc_GAS_CHECK_FEATURE([rel16 relocs],
2769 gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2771 [AC_DEFINE(HAVE_AS_REL16, 1,
2772 [Define if your assembler supports R_PPC_REL16 relocs.])])
2776 gcc_GAS_CHECK_FEATURE([explicit relocation support],
2777 gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2778 [ lw $4,%gp_rel(foo)($4)],,
2779 [if test x$target_cpu_default = x
2780 then target_cpu_default=MASK_EXPLICIT_RELOCS
2781 else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2784 if test x$gas_flag = xyes \
2785 || test x"$host" != x"$build" \
2786 || test ! -x "$gcc_cv_as" \
2787 || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2790 echo "*** This configuration requires the GNU assembler" >&2
2795 # ??? Not all targets support dwarf2 debug_line, even within a version
2796 # of gas. Moreover, we need to emit a valid instruction to trigger any
2797 # info to the output file. So, as supported targets are added to gas 2.11,
2798 # add some instruction here to (also) show we expect this might work.
2799 # ??? Once 2.11 is released, probably need to add first known working
2800 # version to the per-target configury.
2802 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2803 | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2804 | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2807 ia64*-*-* | s390*-*-*)
2814 if test x"$insn" != x; then
2816 .file 1 \"conftest.s\"
2819 gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2820 gcc_cv_as_dwarf2_debug_line,
2821 [elf,2,11,0],, [$conftest_s],
2822 [if test x$gcc_cv_objdump != x \
2823 && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2824 | grep debug_line > /dev/null 2>&1; then
2825 gcc_cv_as_dwarf2_debug_line=yes
2828 # The .debug_line file table must be in the exact order that
2829 # we specified the files, since these indices are also used
2830 # by DW_AT_decl_file. Approximate this test by testing if
2831 # the assembler bitches if the same index is assigned twice.
2832 gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2833 gcc_cv_as_dwarf2_file_buggy,,,
2837 if test $gcc_cv_as_dwarf2_debug_line = yes \
2838 && test $gcc_cv_as_dwarf2_file_buggy = no; then
2839 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2840 [Define if your assembler supports dwarf2 .file/.loc directives,
2841 and preserves file table indices exactly as given.])
2844 gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2845 gcc_cv_as_gdwarf2_flag,
2846 [elf,2,11,0], [--gdwarf2], [$insn],,
2847 [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2848 [Define if your assembler supports the --gdwarf2 option.])])
2850 gcc_GAS_CHECK_FEATURE([--gstabs option],
2851 gcc_cv_as_gstabs_flag,
2852 [elf,2,11,0], [--gstabs], [$insn],
2853 [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2854 # and warns about it, but still exits successfully. So check for
2856 if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2858 else gcc_cv_as_gstabs_flag=yes
2860 [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2861 [Define if your assembler supports the --gstabs option.])])
2864 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2865 gcc_cv_ld_ro_rw_mix=unknown
2866 if test $in_tree_ld = yes ; then
2867 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2868 && test $in_tree_ld_is_elf = yes; then
2869 gcc_cv_ld_ro_rw_mix=read-write
2871 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2872 echo '.section myfoosect, "a"' > conftest1.s
2873 echo '.section myfoosect, "aw"' > conftest2.s
2874 echo '.byte 1' >> conftest2.s
2875 echo '.section myfoosect, "a"' > conftest3.s
2876 echo '.byte 0' >> conftest3.s
2877 if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2878 && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2879 && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2880 && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2881 conftest2.o conftest3.o > /dev/null 2>&1; then
2882 gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2883 | sed -e '/myfoosect/!d' -e N`
2884 if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2885 if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2886 gcc_cv_ld_ro_rw_mix=read-only
2888 gcc_cv_ld_ro_rw_mix=read-write
2893 rm -f conftest.* conftest[123].*
2896 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2897 AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2898 [Define if your linker links a mix of read-only
2899 and read-write sections into a read-write section.])
2901 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2903 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2904 gcc_cv_ld_eh_frame_hdr=no
2905 if test $in_tree_ld = yes ; then
2906 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2907 && test $in_tree_ld_is_elf = yes; then
2908 gcc_cv_ld_eh_frame_hdr=yes
2910 elif test x$gcc_cv_ld != x; then
2911 # Check if linker supports --eh-frame-hdr option
2912 if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2913 gcc_cv_ld_eh_frame_hdr=yes
2916 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
2917 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2918 AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2919 [Define if your linker supports --eh-frame-hdr option.])
2921 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2923 AC_MSG_CHECKING(linker position independent executable support)
2925 if test $in_tree_ld = yes ; then
2926 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2927 && test $in_tree_ld_is_elf = yes; then
2930 elif test x$gcc_cv_ld != x; then
2931 # Check if linker supports -pie option
2932 if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2936 if test x"$gcc_cv_ld_pie" = xyes; then
2937 AC_DEFINE(HAVE_LD_PIE, 1,
2938 [Define if your linker supports -pie option.])
2940 AC_MSG_RESULT($gcc_cv_ld_pie)
2946 AC_CACHE_CHECK(linker --as-needed support,
2947 gcc_cv_ld_as_needed,
2948 [gcc_cv_ld_as_needed=no
2949 if test $in_tree_ld = yes ; then
2950 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2951 && test $in_tree_ld_is_elf = yes; then
2952 gcc_cv_ld_as_needed=yes
2954 elif test x$gcc_cv_ld != x; then
2955 # Check if linker supports --as-needed and --no-as-needed options
2956 if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2957 gcc_cv_ld_as_needed=yes
2961 if test x"$gcc_cv_ld_as_needed" = xyes; then
2962 AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2963 [Define if your linker supports --as-needed and --no-as-needed options.])
2967 powerpc64*-*-linux*)
2968 AC_CACHE_CHECK(linker support for omitting dot symbols,
2969 gcc_cv_ld_no_dot_syms,
2970 [gcc_cv_ld_no_dot_syms=no
2971 if test $in_tree_ld = yes ; then
2972 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2973 gcc_cv_ld_no_dot_syms=yes
2975 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2976 cat > conftest1.s <<EOF
2980 cat > conftest2.s <<EOF
2981 .section ".opd","aw"
2986 .quad .LEfoo,.TOC.@tocbase,0
2992 if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2993 && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2994 && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2995 gcc_cv_ld_no_dot_syms=yes
2997 rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3000 if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3001 AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3002 [Define if your PowerPC64 linker only needs function descriptor syms.])
3007 AC_CACHE_CHECK(linker --sysroot support,
3009 [gcc_cv_ld_sysroot=no
3010 if test $in_tree_ld = yes ; then
3011 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3012 gcc_cv_ld_sysroot=yes
3014 elif test x$gcc_cv_ld != x; then
3015 if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3016 gcc_cv_ld_sysroot=yes
3019 if test x"$gcc_cv_ld_sysroot" = xyes; then
3020 AC_DEFINE(HAVE_LD_SYSROOT, 1,
3021 [Define if your linker supports --sysroot.])
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, "$prefix/include",
3027 [Define to PREFIX/include if cpp should also search that directory.])
3030 # Test for stack protector support in target C library.
3033 AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3034 gcc_cv_libc_provides_ssp,
3035 [gcc_cv_libc_provides_ssp=no
3036 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3037 if test "x$with_sysroot" = x; then
3038 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3039 elif test "x$with_sysroot" = xyes; then
3040 glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3042 glibc_header_dir="${with_sysroot}/usr/include"
3045 glibc_header_dir=/usr/include
3047 # glibc 2.4 and later provides __stack_chk_fail and
3048 # either __stack_chk_guard, or TLS access to stack guard canary.
3049 if test -f $glibc_header_dir/features.h \
3050 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
3051 $glibc_header_dir/features.h > /dev/null; then
3052 if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
3053 $glibc_header_dir/features.h > /dev/null; then
3054 gcc_cv_libc_provides_ssp=yes
3055 elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
3056 $glibc_header_dir/features.h > /dev/null \
3057 && $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
3058 $glibc_header_dir/features.h > /dev/null; then
3059 gcc_cv_libc_provides_ssp=yes
3062 *) gcc_cv_libc_provides_ssp=no ;;
3064 if test x$gcc_cv_libc_provides_ssp = xyes; then
3065 AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3066 [Define if your target C library provides stack protector support])
3069 # Find out what GC implementation we want, or may, use.
3071 [ --with-gc={page,zone} choose the garbage collection mechanism to use
3079 AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3082 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3087 echo "Using $GGC for garbage collection."
3089 # Use the system's zlib library.
3091 zlibinc="-I\$(srcdir)/../zlib"
3092 AC_ARG_WITH(system-zlib,
3093 [ --with-system-zlib use installed libz],
3100 dnl Very limited version of automake's enable-maintainer-mode
3102 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3103 dnl maintainer-mode is disabled by default
3104 AC_ARG_ENABLE(maintainer-mode,
3105 [ --enable-maintainer-mode
3106 enable make rules and dependencies not useful
3107 (and sometimes confusing) to the casual installer],
3108 maintainer_mode=$enableval,
3111 AC_MSG_RESULT($maintainer_mode)
3113 if test "$maintainer_mode" = "yes"; then
3124 # Make empty files to contain the specs and options for each language.
3125 # Then add #include lines to for a compiler that has specs and/or options.
3130 for subdir in . $subdirs
3132 if test -f $srcdir/$subdir/lang.opt; then
3133 lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3135 if test -f $srcdir/$subdir/lang-specs.h; then
3136 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3138 if test -f $srcdir/$subdir/$subdir-tree.def; then
3139 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3143 # These (without "all_") are set in each config-lang.in.
3144 # `language' must be a single word so is spelled singularly.
3149 all_outputs='Makefile gccbug mklibgcc libada-mk'
3150 # List of language makefile fragments.
3152 # List of language subdirectory makefiles. Deprecated.
3154 # Files for gengtype
3155 all_gtfiles="$target_gtfiles"
3156 # Files for gengtype with language
3157 all_gtfiles_files_langs=
3158 all_gtfiles_files_files=
3160 # Add the language fragments.
3161 # Languages are added via two mechanisms. Some information must be
3162 # recorded in makefile variables, these are defined in config-lang.in.
3163 # We accumulate them and plug them into the main Makefile.
3164 # The other mechanism is a set of hooks for each of the main targets
3165 # like `clean', `install', etc.
3167 language_hooks="Make-hooks"
3177 . ${srcdir}/$s/config-lang.in
3178 if test "x$language" = x
3180 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3183 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3184 if test -f ${srcdir}/$s/Makefile.in
3185 then all_lang_makefiles="$s/Makefile"
3187 all_languages="$all_languages $language"
3188 if test "x$boot_language" = xyes
3190 all_boot_languages="$all_boot_languages $language"
3192 all_compilers="$all_compilers $compilers"
3193 all_stagestuff="$all_stagestuff $stagestuff"
3194 all_outputs="$all_outputs $outputs"
3195 all_gtfiles="$all_gtfiles $gtfiles"
3198 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3199 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3203 # Pick up gtfiles for c
3206 . ${srcdir}/c-config-lang.in
3207 all_gtfiles="$all_gtfiles $gtfiles"
3210 all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3211 all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3215 for language in $all_languages
3217 check_languages="$check_languages check-$language"
3220 # We link each language in with a set of hooks, reached indirectly via
3225 target_list="all.build all.cross start.encap rest.encap tags \
3226 install-normal install-common install-man \
3227 uninstall info man srcextra srcman srcinfo \
3228 mostlyclean clean distclean maintainer-clean \
3229 stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3230 for t in $target_list
3233 for lang in $all_languages
3237 echo "lang.$t: $x" >> Make-hooks
3246 echo "dir ." > .gdbinit
3247 echo "dir ${srcdir}" >> .gdbinit
3248 if test x$gdb_needs_out_file_path = xyes
3250 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3252 if test "x$subdirs" != x; then
3255 echo "dir ${srcdir}/$s" >> .gdbinit
3258 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3260 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3261 # absolute path for gcc_tooldir based on inserting the number of up-directory
3262 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3263 # $(libsubdir)/@(unlibsubdir) based path.
3264 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3265 # make and thus we'd get different behavior depending on where we built the
3267 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3268 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3270 changequote(<<, >>)dnl
3271 # An explanation of the sed strings:
3272 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
3273 # -e 's|/$||' match a trailing forward slash and eliminates it
3274 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
3275 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
3277 # (*) Note this pattern overwrites the first character of the string
3278 # with a forward slash if one is not already present. This is not a
3279 # problem because the exact names of the sub-directories concerned is
3280 # unimportant, just the number of them matters.
3282 # The practical upshot of these patterns is like this:
3284 # prefix exec_prefix result
3285 # ------ ----------- ------
3287 # /foo/ /foo/bar ../
3288 # /foo /foo/bar/ ../
3289 # /foo/ /foo/bar/ ../
3290 # /foo /foo/bar/ugg ../../
3293 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3294 changequote([, ])dnl
3296 AC_SUBST(gcc_tooldir)
3299 # Find a directory in which to install a shared libgcc.
3301 AC_ARG_ENABLE(version-specific-runtime-libs,
3302 [ --enable-version-specific-runtime-libs
3303 specify that runtime libraries should be
3304 installed in a compiler-specific directory])
3306 AC_ARG_WITH(slibdir,
3307 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
3308 slibdir="$with_slibdir",
3309 if test "${enable_version_specific_runtime_libs+set}" = set; then
3310 slibdir='$(libsubdir)'
3311 elif test "$host" != "$target"; then
3312 slibdir='$(build_tooldir)/lib'
3318 objdir=`${PWDCMD-pwd}`
3321 # Substitute configuration variables
3324 AC_SUBST(all_boot_languages)
3325 AC_SUBST(all_compilers)
3326 AC_SUBST(all_gtfiles)
3327 AC_SUBST(all_gtfiles_files_langs)
3328 AC_SUBST(all_gtfiles_files_files)
3329 AC_SUBST(all_lang_makefrags)
3330 AC_SUBST(all_lang_makefiles)
3331 AC_SUBST(all_languages)
3332 AC_SUBST(all_stagestuff)
3333 AC_SUBST(build_exeext)
3334 AC_SUBST(build_install_headers_dir)
3335 AC_SUBST(build_xm_file_list)
3336 AC_SUBST(build_xm_include_list)
3337 AC_SUBST(build_xm_defines)
3338 AC_SUBST(check_languages)
3339 AC_SUBST(cc_set_by_configure)
3340 AC_SUBST(quoted_cc_set_by_configure)
3341 AC_SUBST(cpp_install_dir)
3342 AC_SUBST(xmake_file)
3343 AC_SUBST(tmake_file)
3344 AC_SUBST(extra_gcc_objs)
3345 AC_SUBST(extra_headers_list)
3346 AC_SUBST(extra_objs)
3347 AC_SUBST(extra_parts)
3348 AC_SUBST(extra_passes)
3349 AC_SUBST(extra_programs)
3350 AC_SUBST(float_h_file)
3351 AC_SUBST(gcc_config_arguments)
3352 AC_SUBST(gcc_gxx_include_dir)
3353 AC_SUBST(libstdcxx_incdir)
3354 AC_SUBST(host_exeext)
3355 AC_SUBST(host_xm_file_list)
3356 AC_SUBST(host_xm_include_list)
3357 AC_SUBST(host_xm_defines)
3358 AC_SUBST(out_host_hook_obj)
3360 AC_SUBST(lang_opt_files)
3361 AC_SUBST(lang_specs_files)
3362 AC_SUBST(lang_tree_files)
3363 AC_SUBST(local_prefix)
3365 AC_SUBST(objc_boehm_gc)
3367 AC_SUBST(out_object_file)
3368 AC_SUBST(stage_prefix_set_by_configure)
3369 AC_SUBST(quoted_stage_prefix_set_by_configure)
3370 AC_SUBST(thread_file)
3371 AC_SUBST(tm_file_list)
3372 AC_SUBST(tm_include_list)
3373 AC_SUBST(tm_defines)
3374 AC_SUBST(tm_p_file_list)
3375 AC_SUBST(tm_p_include_list)
3376 AC_SUBST(xm_file_list)
3377 AC_SUBST(xm_include_list)
3378 AC_SUBST(xm_defines)
3379 AC_SUBST(c_target_objs)
3380 AC_SUBST(cxx_target_objs)
3381 AC_SUBST(target_cpu_default)
3383 AC_SUBST_FILE(language_hooks)
3386 if test x${build} = x${host} ; then
3387 if test x${host} = x${target} ; then
3388 echo "Links are now set up to build a native compiler for ${target}." 1>&2
3390 echo "Links are now set up to build a cross-compiler" 1>&2
3391 echo " from ${host} to ${target}." 1>&2
3394 if test x${host} = x${target} ; then
3395 echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3396 echo " for ${target}." 1>&2
3398 echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3399 echo " from ${host} to ${target}." 1>&2
3403 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3404 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3406 # Configure the subdirectories
3407 # AC_CONFIG_SUBDIRS($subdirs)
3409 # Create the Makefile
3410 # and configure language subdirectories
3411 AC_CONFIG_FILES($all_outputs)
3413 AC_CONFIG_COMMANDS([default],
3415 case ${CONFIG_HEADERS} in
3416 *auto-host.h:config.in*)
3419 # Make sure all the subdirs exist.
3420 for d in $subdirs doc build
3422 test -d $d || mkdir $d
3424 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3425 # bootstrapping and the installation procedure can still use
3426 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
3427 # FLAGS_TO_PASS has been modified to solve the problem there.
3428 # This is virtually a duplicate of what happens in configure.lang; we do
3429 # an extra check to make sure this only happens if ln -s can be used.
3432 for d in ${subdirs} ; do
3433 STARTDIR=`${PWDCMD-pwd}`
3435 for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3438 $LN_S ../$t $t 2>/dev/null
3445 [subdirs='$subdirs'])