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[thirdparty/gcc.git] / gcc / configure.in
1 # configure.in for GCC
2 # Process this file with autoconf to generate a configuration script.
3
4 # Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
5
6 #This file is part of GCC.
7
8 #GCC is free software; you can redistribute it and/or modify it under
9 #the terms of the GNU General Public License as published by the Free
10 #Software Foundation; either version 2, or (at your option) any later
11 #version.
12
13 #GCC is distributed in the hope that it will be useful, but WITHOUT
14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 #for more details.
17
18 #You should have received a copy of the GNU General Public License
19 #along with GCC; see the file COPYING. If not, write to the Free
20 #Software Foundation, 59 Temple Place - Suite 330, Boston, MA
21 #02111-1307, USA.
22
23 # Initialization and defaults
24 AC_PREREQ(2.13)
25 AC_INIT(tree.c)
26 AC_CONFIG_HEADER(auto-host.h:config.in)
27
28 remove=rm
29 hard_link=ln
30 symbolic_link='ln -s'
31 copy=cp
32
33 # Check for bogus environment variables.
34 # Test if LIBRARY_PATH contains the notation for the current directory
35 # since this would lead to problems installing/building glibc.
36 # LIBRARY_PATH contains the current directory if one of the following
37 # is true:
38 # - one of the terminals (":" and ";") is the first or last sign
39 # - two terminals occur directly after each other
40 # - the path contains an element with a dot in it
41 AC_MSG_CHECKING(LIBRARY_PATH variable)
42 changequote(,)dnl
43 case ${LIBRARY_PATH} in
44 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
45 library_path_setting="contains current directory"
46 ;;
47 *)
48 library_path_setting="ok"
49 ;;
50 esac
51 changequote([,])dnl
52 AC_MSG_RESULT($library_path_setting)
53 if test "$library_path_setting" != "ok"; then
54 AC_MSG_ERROR([
55 *** LIBRARY_PATH shouldn't contain the current directory when
56 *** building gcc. Please change the environment variable
57 *** and run configure again.])
58 fi
59
60 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
61 # since this would lead to problems installing/building glibc.
62 # GCC_EXEC_PREFIX contains the current directory if one of the following
63 # is true:
64 # - one of the terminals (":" and ";") is the first or last sign
65 # - two terminals occur directly after each other
66 # - the path contains an element with a dot in it
67 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
68 changequote(,)dnl
69 case ${GCC_EXEC_PREFIX} in
70 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
71 gcc_exec_prefix_setting="contains current directory"
72 ;;
73 *)
74 gcc_exec_prefix_setting="ok"
75 ;;
76 esac
77 changequote([,])dnl
78 AC_MSG_RESULT($gcc_exec_prefix_setting)
79 if test "$gcc_exec_prefix_setting" != "ok"; then
80 AC_MSG_ERROR([
81 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
82 *** building gcc. Please change the environment variable
83 *** and run configure again.])
84 fi
85
86 # Check for additional parameters
87
88 # With GNU ld
89 AC_ARG_WITH(gnu-ld,
90 [ --with-gnu-ld arrange to work with GNU ld.],
91 gnu_ld_flag="$with_gnu_ld",
92 gnu_ld_flag=no)
93
94 # With pre-defined ld
95 AC_ARG_WITH(ld,
96 [ --with-ld arrange to use the specified ld (full pathname)],
97 DEFAULT_LINKER="$with_ld")
98 if test x"${DEFAULT_LINKER+set}" = x"set"; then
99 if test ! -x "$DEFAULT_LINKER"; then
100 AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
101 elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
102 gnu_ld_flag=yes
103 fi
104 AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
105 [Define to enable the use of a default linker.])
106 fi
107
108 # With GNU as
109 AC_ARG_WITH(gnu-as,
110 [ --with-gnu-as arrange to work with GNU as],
111 gas_flag="$with_gnu_as",
112 gas_flag=no)
113
114 AC_ARG_WITH(as,
115 [ --with-as arrange to use the specified as (full pathname)],
116 DEFAULT_ASSEMBLER="$with_as")
117 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
118 if test ! -x "$DEFAULT_ASSEMBLER"; then
119 AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
120 elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
121 gas_flag=yes
122 fi
123 AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
124 [Define to enable the use of a default assembler.])
125 fi
126
127 # With stabs
128 AC_ARG_WITH(stabs,
129 [ --with-stabs arrange to use stabs instead of host debug format],
130 stabs="$with_stabs",
131 stabs=no)
132
133 # With ELF
134 AC_ARG_WITH(elf,
135 [ --with-elf arrange to use ELF instead of host debug format],
136 elf="$with_elf",
137 elf=no)
138
139 # Specify the local prefix
140 local_prefix=
141 AC_ARG_WITH(local-prefix,
142 [ --with-local-prefix=DIR specifies directory to put local include],
143 [case "${withval}" in
144 yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
145 no) ;;
146 *) local_prefix=$with_local_prefix ;;
147 esac])
148
149 # Default local prefix if it is empty
150 if test x$local_prefix = x; then
151 local_prefix=/usr/local
152 fi
153
154 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
155 # passed in by the toplevel make and thus we'd get different behavior
156 # depending on where we built the sources.
157 gcc_gxx_include_dir=
158 # Specify the g++ header file directory
159 AC_ARG_WITH(gxx-include-dir,
160 [ --with-gxx-include-dir=DIR
161 specifies directory to put g++ header files],
162 [case "${withval}" in
163 yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
164 no) ;;
165 *) gcc_gxx_include_dir=$with_gxx_include_dir ;;
166 esac])
167
168 if test x${gcc_gxx_include_dir} = x; then
169 if test x${enable_version_specific_runtime_libs} = xyes; then
170 gcc_gxx_include_dir='${libsubdir}/include/g++'
171 else
172 topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
173 changequote(<<, >>)dnl
174 gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
175 changequote([, ])dnl
176 fi
177 fi
178
179 # Determine whether or not multilibs are enabled.
180 AC_ARG_ENABLE(multilib,
181 [ --enable-multilib enable library support for multiple ABIs],
182 [], [enable_multilib=yes])
183 AC_SUBST(enable_multilib)
184
185 # Enable expensive internal checks
186 AC_ARG_ENABLE(checking,
187 [ --enable-checking[=LIST]
188 enable expensive run-time checks. With LIST,
189 enable only specific categories of checks.
190 Categories are: misc,tree,rtl,gc,gcac; default
191 is misc,tree,gc],
192 [ac_checking=
193 ac_tree_checking=
194 ac_rtl_checking=
195 ac_gc_checking=
196 ac_gc_always_collect=
197 case "${enableval}" in
198 yes) ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;;
199 no) ;;
200 *) IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
201 set fnord $enableval; shift
202 IFS="$ac_save_IFS"
203 for check
204 do
205 case $check in
206 misc) ac_checking=1 ;;
207 tree) ac_tree_checking=1 ;;
208 rtl) ac_rtl_checking=1 ;;
209 gc) ac_gc_checking=1 ;;
210 gcac) ac_gc_always_collect=1 ;;
211 *) AC_MSG_ERROR(unknown check category $check) ;;
212 esac
213 done
214 ;;
215 esac
216 ],
217 # Enable some checks by default for development versions of GCC
218 [ac_checking=1; ac_tree_checking=1; ac_gc_checking=1;])
219 if test x$ac_checking != x ; then
220 AC_DEFINE(ENABLE_CHECKING, 1,
221 [Define if you want more run-time sanity checks. This one gets a grab
222 bag of miscellaneous but relatively cheap checks.])
223 fi
224 if test x$ac_tree_checking != x ; then
225 AC_DEFINE(ENABLE_TREE_CHECKING, 1,
226 [Define if you want all operations on trees (the basic data
227 structure of the front ends) to be checked for dynamic type safety
228 at runtime. This is moderately expensive.])
229 fi
230 if test x$ac_rtl_checking != x ; then
231 AC_DEFINE(ENABLE_RTL_CHECKING, 1,
232 [Define if you want all operations on RTL (the basic data structure
233 of the optimizer and back end) to be checked for dynamic type safety
234 at runtime. This is quite expensive.])
235 fi
236 if test x$ac_gc_checking != x ; then
237 AC_DEFINE(ENABLE_GC_CHECKING, 1,
238 [Define if you want the garbage collector to do object poisoning and
239 other memory allocation checks. This is quite expensive.])
240 fi
241 if test x$ac_gc_always_collect != x ; then
242 AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
243 [Define if you want the garbage collector to operate in maximally
244 paranoid mode, validating the entire heap and collecting garbage at
245 every opportunity. This is extremely expensive.])
246 fi
247
248
249 AC_ARG_ENABLE(cpp,
250 [ --disable-cpp don't provide a user-visible C preprocessor],
251 [], [enable_cpp=yes])
252
253 AC_ARG_WITH(cpp_install_dir,
254 [ --with-cpp-install-dir=DIR
255 install the user visible C preprocessor in DIR
256 (relative to PREFIX) as well as PREFIX/bin],
257 [if test x$withval = xyes; then
258 AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
259 elif test x$withval != xno; then
260 cpp_install_dir=$withval
261 fi])
262
263 # Enable Multibyte Characters for C/C++
264 AC_ARG_ENABLE(c-mbchar,
265 [ --enable-c-mbchar enable multibyte characters for C and C++],
266 if test x$enable_c_mbchar != xno; then
267 AC_DEFINE(MULTIBYTE_CHARS, 1,
268 [Define if you want the C and C++ compilers to support multibyte
269 character sets for source code.])
270 fi)
271
272 # Enable threads
273 # Pass with no value to take the default
274 # Pass with a value to specify a thread package
275 AC_ARG_ENABLE(threads,
276 [ --enable-threads enable thread usage for target GCC
277 --enable-threads=LIB use LIB thread package for target GCC],,
278 enable_threads='')
279
280 enable_threads_flag=$enable_threads
281 # Check if a valid thread package
282 case x${enable_threads_flag} in
283 x | xno)
284 # No threads
285 target_thread_file='single'
286 ;;
287 xyes)
288 # default
289 target_thread_file=''
290 ;;
291 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
292 xsolaris | xwin32 | xdce | xrtems| xvxworks | xaix)
293 target_thread_file=$enable_threads_flag
294 ;;
295 *)
296 echo "$enable_threads is an unknown thread package" 1>&2
297 exit 1
298 ;;
299 esac
300
301 AC_ARG_ENABLE(objc-gc,
302 [ --enable-objc-gc enable the use of Boehm's garbage collector with
303 the GNU Objective-C runtime],
304 if test x$enable_objc_gc = xno; then
305 objc_boehm_gc=''
306 else
307 objc_boehm_gc=1
308 fi,
309 objc_boehm_gc='')
310
311 AC_ARG_WITH(dwarf2,
312 [ --with-dwarf2 force the default debug format to be DWARF 2],
313 dwarf2="$with_dwarf2",
314 dwarf2=no)
315
316 AC_ARG_ENABLE(shared,
317 [ --disable-shared don't provide a shared libgcc],
318 [
319 case $enable_shared in
320 yes | no) ;;
321 *)
322 enable_shared=no
323 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
324 for pkg in $enableval; do
325 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
326 enable_shared=yes
327 fi
328 done
329 IFS="$ac_save_ifs"
330 ;;
331 esac
332 ], [enable_shared=yes])
333 AC_SUBST(enable_shared)
334
335 # Determine the host, build, and target systems
336 AC_CANONICAL_SYSTEM
337
338 # Set program_transform_name
339 AC_ARG_PROGRAM
340
341 # Find the native compiler
342 AC_PROG_CC
343 AC_PROG_CC_C_O
344 # autoconf is lame and doesn't give us any substitution variable for this.
345 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
346 NO_MINUS_C_MINUS_O=yes
347 else
348 OUTPUT_OPTION='-o $@'
349 fi
350 AC_SUBST(NO_MINUS_C_MINUS_O)
351 AC_SUBST(OUTPUT_OPTION)
352
353 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
354 ac_cv_prog_cc_no_long_long,
355 [save_CFLAGS="$CFLAGS"
356 CFLAGS="-Wno-long-long"
357 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
358 ac_cv_prog_cc_no_long_long=no)
359 CFLAGS="$save_CFLAGS"])
360 strict1_warn=
361 if test $ac_cv_prog_cc_no_long_long = yes; then
362 strict1_warn="-pedantic -Wno-long-long"
363 fi
364 AC_SUBST(strict1_warn)
365
366 AC_PROG_CPP
367 AC_C_INLINE
368 gcc_AC_C_VOLATILE
369
370 gcc_AC_C_LONG_DOUBLE
371 gcc_AC_C_LONG_LONG
372 gcc_AC_C__BOOL
373
374 # sizeof(char) is 1 by definition.
375 gcc_AC_COMPILE_CHECK_SIZEOF(short)
376 gcc_AC_COMPILE_CHECK_SIZEOF(int)
377 gcc_AC_COMPILE_CHECK_SIZEOF(long)
378 if test $ac_cv_c_long_long = yes; then
379 gcc_AC_COMPILE_CHECK_SIZEOF(long long)
380 fi
381 if test $ac_cv_c___int64 = yes; then
382 gcc_AC_COMPILE_CHECK_SIZEOF(__int64)
383 fi
384
385 gcc_AC_C_CHARSET
386
387 # If the native compiler is GCC, we can enable warnings even in stage1.
388 # That's useful for people building cross-compilers, or just running a
389 # quick `make'.
390 warn_cflags=
391 if test "x$GCC" = "xyes"; then
392 warn_cflags='$(GCC_WARN_CFLAGS)'
393 fi
394 AC_SUBST(warn_cflags)
395
396 # Stage specific cflags for build.
397 stage1_cflags=
398 case $build in
399 vax-*-*)
400 if test x$GCC = xyes
401 then
402 stage1_cflags="-Wa,-J"
403 else
404 stage1_cflags="-J"
405 fi
406 ;;
407 esac
408 AC_SUBST(stage1_cflags)
409
410 AC_PROG_MAKE_SET
411
412 AC_MSG_CHECKING([whether a default assembler was specified])
413 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
414 if test x"$gas_flag" = x"no"; then
415 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
416 else
417 AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
418 fi
419 else
420 AC_MSG_RESULT(no)
421 fi
422
423 AC_MSG_CHECKING([whether a default linker was specified])
424 if test x"${DEFAULT_LINKER+set}" = x"set"; then
425 if test x"$gnu_ld_flag" = x"no"; then
426 AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
427 else
428 AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
429 fi
430 else
431 AC_MSG_RESULT(no)
432 fi
433
434 AC_MSG_CHECKING(for GNU C library)
435 AC_CACHE_VAL(gcc_cv_glibc,
436 [AC_TRY_COMPILE(
437 [#include <features.h>],[
438 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
439 #error Not a GNU C library system
440 #endif],
441 [gcc_cv_glibc=yes],
442 gcc_cv_glibc=no)])
443 AC_MSG_RESULT($gcc_cv_glibc)
444 if test $gcc_cv_glibc = yes; then
445 AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
446 fi
447
448 # Find some useful tools
449 AC_PROG_AWK
450 gcc_AC_PROG_LN
451 gcc_AC_PROG_LN_S
452 AC_PROG_RANLIB
453 gcc_AC_PROG_INSTALL
454
455 AC_HEADER_STDC
456 AC_HEADER_TIME
457 gcc_AC_HEADER_STDBOOL
458 gcc_AC_HEADER_STRING
459 AC_HEADER_SYS_WAIT
460 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
461 fcntl.h unistd.h sys/file.h sys/time.h \
462 sys/resource.h sys/param.h sys/times.h sys/stat.h \
463 direct.h malloc.h langinfo.h)
464
465 # Check for thread headers.
466 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
467 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
468
469 # These tests can't be done till we know if we have limits.h.
470 gcc_AC_C_CHAR_BIT
471 gcc_AC_C_COMPILE_ENDIAN
472 gcc_AC_C_FLOAT_FORMAT
473
474 # See if GNAT has been installed
475 gcc_AC_PROG_GNAT
476
477 # See if we have the mktemp command.
478 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
479
480 # Do we have a single-tree copy of texinfo?
481 if test -f $srcdir/../texinfo/Makefile.in; then
482 MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
483 gcc_cv_prog_makeinfo_modern=yes
484 AC_MSG_RESULT([Using makeinfo from the unified source tree.])
485 else
486 # See if makeinfo has been installed and is modern enough
487 # that we can use it.
488 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
489 [GNU texinfo.* \([0-9][0-9.]*\)],
490 [4.*])
491 fi
492
493 if test $gcc_cv_prog_makeinfo_modern = no; then
494 AC_MSG_WARN([
495 *** Makeinfo is missing or too old.
496 *** Info documentation will not be built.])
497 BUILD_INFO=
498 else
499 BUILD_INFO=info AC_SUBST(BUILD_INFO)
500 fi
501
502 # Is pod2man recent enough to regenerate manpages?
503 AC_MSG_CHECKING([for recent Pod::Man])
504 if perl -e 'use 1.10 Pod::Man' >/dev/null 2>&1; then
505 AC_MSG_RESULT(yes)
506 GENERATED_MANPAGES=generated-manpages AC_SUBST(GENERATED_MANPAGES)
507 else
508 AC_MSG_RESULT(no)
509 GENERATED_MANPAGES=
510 fi
511
512 # How about lex?
513 dnl Don't use AC_PROG_LEX; we insist on flex.
514 dnl LEXLIB is not useful in gcc.
515 if test -f $srcdir/../flex/skel.c; then
516 FLEX='$(objdir)/../flex/flex'
517 else
518 AC_CHECK_PROG(FLEX, flex, flex, false)
519 fi
520
521 # Bison?
522 # The -L switch is so bison can find its skeleton file.
523 if test -f $srcdir/../bison/bison.simple; then
524 BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
525 else
526 AC_CHECK_PROG(BISON, bison, bison, false)
527 fi
528
529 # These libraries may be used by collect2.
530 # We may need a special search path to get them linked.
531 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
532 [save_LIBS="$LIBS"
533 for libs in '' -lld -lmld \
534 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
535 '-L/usr/lib/cmplrs/cc3.11 -lmld'
536 do
537 LIBS="$libs"
538 AC_TRY_LINK_FUNC(ldopen,
539 [gcc_cv_collect2_libs="$libs"; break])
540 done
541 LIBS="$save_LIBS"
542 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
543 case $gcc_cv_collect2_libs in
544 "none required") ;;
545 *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
546 esac
547 AC_SUBST(COLLECT2_LIBS)
548
549 # When building Ada code on Alpha, we need exc_resume which is usually in
550 # -lexc. So test for it.
551 save_LIBS="$LIBS"
552 LIBS=
553 AC_SEARCH_LIBS(exc_resume, exc)
554 GNAT_LIBEXC="$LIBS"
555 LIBS="$save_LIBS"
556 AC_SUBST(GNAT_LIBEXC)
557
558 # See if the stage1 system preprocessor understands the ANSI C
559 # preprocessor stringification operator. (Used by symcat.h.)
560 AC_C_STRINGIZE
561
562 # Use <inttypes.h> only if it exists,
563 # doesn't clash with <sys/types.h>, and declares intmax_t.
564 AC_MSG_CHECKING(for inttypes.h)
565 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
566 [AC_TRY_COMPILE(
567 [#include <sys/types.h>
568 #include <inttypes.h>],
569 [intmax_t i = -1;],
570 [gcc_cv_header_inttypes_h=yes],
571 gcc_cv_header_inttypes_h=no)])
572 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
573 if test $gcc_cv_header_inttypes_h = yes; then
574 AC_DEFINE(HAVE_INTTYPES_H, 1,
575 [Define if you have a working <inttypes.h> header file.])
576 fi
577
578 dnl Disabled until we have a complete test for buggy enum bitfields.
579 dnl gcc_AC_C_ENUM_BF_UNSIGNED
580
581 AC_CHECK_FUNCS(strtoul bsearch popen times clock \
582 strchr strrchr kill getrlimit setrlimit atoll atoq \
583 sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
584 fputs_unlocked fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
585 lstat)
586
587 AC_CHECK_TYPE(ssize_t, int)
588
589 # Try to determine the array type of the second argument of getgroups
590 # for the target system (int or gid_t).
591 AC_TYPE_GETGROUPS
592 if test "${target}" = "${build}"; then
593 TARGET_GETGROUPS_T=$ac_cv_type_getgroups
594 else
595 case "${target}" in
596 # This condition may need some tweaking. It should include all
597 # targets where the array type of the second argument of getgroups
598 # is int and the type of gid_t is not equivalent to int.
599 *-*-sunos* | *-*-ultrix*)
600 TARGET_GETGROUPS_T=int
601 ;;
602 *)
603 TARGET_GETGROUPS_T=gid_t
604 ;;
605 esac
606 fi
607 AC_SUBST(TARGET_GETGROUPS_T)
608
609 gcc_AC_FUNC_VFPRINTF_DOPRNT
610 gcc_AC_FUNC_STRSTR
611 gcc_AC_FUNC_PRINTF_PTR
612
613 case "${host}" in
614 *-*-uwin*)
615 AC_MSG_ERROR([
616 *** UWIN may not be used as a host platform because
617 *** linking with posix.dll is not allowed by the GNU GPL])
618 ;;
619 esac
620 AC_FUNC_VFORK
621 AC_FUNC_MMAP_ANYWHERE
622 AC_FUNC_MMAP_FILE
623
624 AM_ICONV
625
626 # We will need to find libiberty.h and ansidecl.h
627 saved_CFLAGS="$CFLAGS"
628 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
629 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
630 strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
631 fprintf_unlocked strstr environ errno \
632 malloc realloc calloc free basename getopt clock, , ,[
633 #include "ansidecl.h"
634 #include "system.h"])
635
636 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
637 #include "ansidecl.h"
638 #include "system.h"
639 #ifdef HAVE_SYS_RESOURCE_H
640 #include <sys/resource.h>
641 #endif
642 ])
643
644 gcc_AC_CHECK_DECLS(times, , ,[
645 #include "ansidecl.h"
646 #include "system.h"
647 #ifdef HAVE_SYS_TIMES_H
648 #include <sys/times.h>
649 #endif
650 ])
651
652 # More time-related stuff.
653 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
654 AC_TRY_COMPILE([
655 #include "ansidecl.h"
656 #include "system.h"
657 #ifdef HAVE_SYS_TIMES_H
658 #include <sys/times.h>
659 #endif
660 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
661 if test $ac_cv_struct_tms = yes; then
662 AC_DEFINE(HAVE_STRUCT_TMS, 1,
663 [Define if <sys/times.h> defines struct tms.])
664 fi
665
666 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
667 # revisit after autoconf 2.50.
668 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
669 AC_TRY_COMPILE([
670 #include "ansidecl.h"
671 #include "system.h"
672 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
673 if test $gcc_cv_type_clock_t = yes; then
674 AC_DEFINE(HAVE_CLOCK_T, 1,
675 [Define if <time.h> defines clock_t.])
676 fi
677
678 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
679 CFLAGS="$saved_CFLAGS"
680
681 # mkdir takes a single argument on some systems.
682 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
683
684 # File extensions
685 manext='.1'
686 objext='.o'
687 AC_SUBST(manext)
688 AC_SUBST(objext)
689
690 build_xm_file=
691 build_xm_defines=
692 build_install_headers_dir=install-headers-tar
693 build_exeext=
694 host_xm_file=
695 host_xm_defines=
696 host_xmake_file=
697 host_truncate_target=
698 host_exeext=
699
700 # Decode the host machine, then the target machine.
701 # For the host machine, we save the xm_file variable as host_xm_file;
702 # then we decode the target machine and forget everything else
703 # that came from the host machine.
704 for machine in $build $host $target; do
705 . ${srcdir}/config.gcc
706 done
707
708 extra_objs="${host_extra_objs} ${extra_objs}"
709
710 # Default the target-machine variables that were not explicitly set.
711 if test x"$tm_file" = x
712 then tm_file=$cpu_type/$cpu_type.h; fi
713
714 if test x"$extra_headers" = x
715 then extra_headers=; fi
716
717 if test x$md_file = x
718 then md_file=$cpu_type/$cpu_type.md; fi
719
720 if test x$out_file = x
721 then out_file=$cpu_type/$cpu_type.c; fi
722
723 if test x"$tmake_file" = x
724 then tmake_file=$cpu_type/t-$cpu_type
725 fi
726
727 if test x"$dwarf2" = xyes
728 then tm_file="$tm_file tm-dwarf2.h"
729 fi
730
731 if test x$float_format = x
732 then float_format=i64
733 fi
734
735 if test $float_format = none
736 then float_h_file=Makefile.in
737 else float_h_file=float-$float_format.h
738 fi
739
740 # Handle cpp installation.
741 if test x$enable_cpp != xno
742 then
743 tmake_file="$tmake_file t-install-cpp"
744 fi
745
746 # Say what files are being used for the output code and MD file.
747 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
748 echo "Using \`$srcdir/config/$md_file' as machine description file."
749
750 # If any of the xm_file variables contain nonexistent files, warn
751 # about them and drop them.
752
753 bx=
754 for x in $build_xm_file; do
755 if test -f $srcdir/config/$x
756 then bx="$bx $x"
757 else AC_MSG_WARN($srcdir/config/$x does not exist.)
758 fi
759 done
760 build_xm_file="$bx"
761
762 hx=
763 for x in $host_xm_file; do
764 if test -f $srcdir/config/$x
765 then hx="$hx $x"
766 else AC_MSG_WARN($srcdir/config/$x does not exist.)
767 fi
768 done
769 host_xm_file="$hx"
770
771 tx=
772 for x in $xm_file; do
773 if test -f $srcdir/config/$x
774 then tx="$tx $x"
775 else AC_MSG_WARN($srcdir/config/$x does not exist.)
776 fi
777 done
778 xm_file="$tx"
779
780 count=a
781 for f in $tm_file; do
782 count=${count}x
783 done
784 if test $count = ax; then
785 echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
786 else
787 echo "Using the following target machine macro files:"
788 for f in $tm_file; do
789 echo " $srcdir/config/$f"
790 done
791 fi
792
793 count=a
794 for f in $host_xm_file; do
795 count=${count}x
796 done
797 if test $count = a; then
798 :
799 elif test $count = ax; then
800 echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
801 else
802 echo "Using the following host machine macro files:"
803 for f in $host_xm_file; do
804 echo " $srcdir/config/$f"
805 done
806 fi
807
808 if test "$host_xm_file" != "$build_xm_file"; then
809 count=a
810 for f in $build_xm_file; do
811 count=${count}x
812 done
813 if test $count = a; then
814 :
815 elif test $count = ax; then
816 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
817 else
818 echo "Using the following build machine macro files:"
819 for f in $build_xm_file; do
820 echo " $srcdir/config/$f"
821 done
822 fi
823 fi
824
825 if test x$thread_file = x; then
826 if test x$target_thread_file != x; then
827 thread_file=$target_thread_file
828 else
829 thread_file='single'
830 fi
831 fi
832
833 # auto-host.h is the file containing items generated by autoconf and is
834 # the first file included by config.h.
835 # If host=build, it is correct to have hconfig include auto-host.h
836 # as well. If host!=build, we are in error and need to do more
837 # work to find out the build config parameters.
838 if test x$host = x$build
839 then
840 build_auto=auto-host.h
841 else
842 # We create a subdir, then run autoconf in the subdir.
843 # To prevent recursion we set host and build for the new
844 # invocation of configure to the build for this invocation
845 # of configure.
846 tempdir=build.$$
847 rm -rf $tempdir
848 mkdir $tempdir
849 cd $tempdir
850 case ${srcdir} in
851 /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
852 *) realsrcdir=../${srcdir};;
853 esac
854 saved_CFLAGS="${CFLAGS}"
855 CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
856 ${realsrcdir}/configure \
857 --target=$target --host=$build --build=$build
858 CFLAGS="${saved_CFLAGS}"
859
860 # We just finished tests for the build machine, so rename
861 # the file auto-build.h in the gcc directory.
862 mv auto-host.h ../auto-build.h
863 cd ..
864 rm -rf $tempdir
865 build_auto=auto-build.h
866 fi
867
868 tm_file="${tm_file} defaults.h"
869 host_xm_file="auto-host.h ansidecl.h ${host_xm_file} ${tm_file}"
870 build_xm_file="${build_auto} ansidecl.h ${build_xm_file} ${tm_file}"
871 xm_file="ansidecl.h ${xm_file} ${tm_file}"
872
873 # Truncate the target if necessary
874 if test x$host_truncate_target != x; then
875 target=`echo $target | sed -e 's/\(..............\).*/\1/'`
876 fi
877
878 # Get the version trigger filename from the toplevel
879 if test "${with_gcc_version_trigger+set}" = set; then
880 gcc_version_trigger=$with_gcc_version_trigger
881 else
882 gcc_version_trigger=${srcdir}/version.c
883 fi
884 changequote(,)dnl
885 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
886 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
887
888 # Compile in configure arguments.
889 if test -f configargs.h ; then
890 # Being re-configured.
891 gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
892 gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
893 else
894 gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
895 fi
896 cat > configargs.h <<EOF
897 /* Generated automatically. */
898 static const char configuration_arguments[] = "$gcc_config_arguments";
899 static const char thread_model[] = "$thread_file";
900 EOF
901 changequote([,])dnl
902
903 # Internationalization
904 PACKAGE=gcc
905 VERSION="$gcc_version"
906 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
907 [Define to the name of the distribution.])
908 AC_DEFINE_UNQUOTED(VERSION, "$VERSION",
909 [Define to the version of the distribution.])
910 AC_SUBST(PACKAGE)
911 AC_SUBST(VERSION)
912
913 # Enable NLS support by default
914 AC_ARG_ENABLE(nls,
915 [ --enable-nls use Native Language Support (default)],
916 , enable_nls=yes)
917
918 # if cross compiling, disable NLS support.
919 # It's not worth the trouble, at least for now.
920
921 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
922 AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
923 enable_nls=no
924 fi
925
926 AM_GNU_GETTEXT
927
928 # Windows32 Registry support for specifying GCC installation paths.
929 AC_ARG_ENABLE(win32-registry,
930 [ --disable-win32-registry
931 disable lookup of installation paths in the
932 Registry on Windows hosts
933 --enable-win32-registry enable registry lookup (default)
934 --enable-win32-registry=KEY
935 use KEY instead of GCC version as the last portion
936 of the registry key],,)
937 case $host_os in
938 win32 | pe | cygwin* | mingw32* | uwin*)
939 AC_MSG_CHECKING(whether windows registry support is requested)
940 if test "x$enable_win32_registry" != xno; then
941 AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
942 [Define to 1 if installation paths should be looked up in Windows32
943 Registry. Ignored on non windows32 hosts.])
944 AC_MSG_RESULT(yes)
945 AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
946 else
947 AC_MSG_RESULT(no)
948 fi
949
950 # Check if user specified a different registry key.
951 case "x${enable_win32_registry}" in
952 x | xyes)
953 # default.
954 gcc_cv_win32_registry_key="$VERSION"
955 ;;
956 xno)
957 # no registry lookup.
958 gcc_cv_win32_registry_key=''
959 ;;
960 *)
961 # user-specified key.
962 gcc_cv_win32_registry_key="$enable_win32_registry"
963 ;;
964 esac
965
966 if test "x$enable_win32_registry" != xno; then
967 AC_MSG_CHECKING(registry key on windows hosts)
968 AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
969 [Define to be the last portion of registry key on windows hosts.])
970 AC_MSG_RESULT($gcc_cv_win32_registry_key)
971 fi
972 ;;
973 esac
974
975 # Get an absolute path to the GCC top-level source directory
976 holddir=`pwd`
977 cd $srcdir
978 topdir=`pwd`
979 cd $holddir
980
981 # Conditionalize the makefile for this host machine.
982 # Make-host contains the concatenation of all host makefile fragments
983 # [there can be more than one]. This file is built by configure.frag.
984 host_overrides=Make-host
985 dep_host_xmake_file=
986 for f in .. ${host_xmake_file}
987 do
988 if test -f ${srcdir}/config/$f
989 then
990 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
991 fi
992 done
993
994 # Conditionalize the makefile for this target machine.
995 # Make-target contains the concatenation of all host makefile fragments
996 # [there can be more than one]. This file is built by configure.frag.
997 target_overrides=Make-target
998 dep_tmake_file=
999 for f in .. ${tmake_file}
1000 do
1001 if test -f ${srcdir}/config/$f
1002 then
1003 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
1004 fi
1005 done
1006
1007 # If the host doesn't support symlinks, modify CC in
1008 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1009 # Otherwise, we can use "CC=$(CC)".
1010 rm -f symtest.tem
1011 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
1012 then
1013 cc_set_by_configure="\$(CC)"
1014 quoted_cc_set_by_configure="\$(CC)"
1015 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1016 else
1017 rm -f symtest.tem
1018 if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
1019 then
1020 symbolic_link="cp -p"
1021 else
1022 symbolic_link="cp"
1023 fi
1024 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1025 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1026 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1027 fi
1028 rm -f symtest.tem
1029
1030 out_object_file=`basename $out_file .c`.o
1031
1032 tm_file_list=
1033 for f in $tm_file; do
1034 case $f in
1035 ansidecl.h )
1036 tm_file_list="${tm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1037 defaults.h )
1038 tm_file_list="${tm_file_list} $f" ;;
1039 *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
1040 esac
1041 done
1042
1043 tm_p_file_list=
1044 for f in $tm_p_file; do
1045 tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1046 done
1047
1048 host_xm_file_list=
1049 for f in $host_xm_file; do
1050 case $f in
1051 ansidecl.h )
1052 host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1053 auto-host.h | defaults.h )
1054 host_xm_file_list="${host_xm_file_list} $f" ;;
1055 *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1056 esac
1057 done
1058
1059 build_xm_file_list=
1060 for f in $build_xm_file; do
1061 case $f in
1062 ansidecl.h )
1063 build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1064 auto-build.h | auto-host.h | defaults.h )
1065 build_xm_file_list="${build_xm_file_list} $f" ;;
1066 *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1067 esac
1068 done
1069
1070 # Define macro CROSS_COMPILE in compilation
1071 # if this is a cross-compiler.
1072 # Also use all.cross instead of all.internal
1073 # and add cross-make to Makefile.
1074 cross_overrides="/dev/null"
1075 if test x$host != x$target
1076 then
1077 cross_defines="CROSS=-DCROSS_COMPILE"
1078 cross_overrides="${topdir}/cross-make"
1079 fi
1080
1081 # If this is a cross-compiler that does not
1082 # have its own set of headers then define
1083 # inhibit_libc
1084
1085 # If this is using newlib, then define inhibit_libc in LIBGCC2_CFLAGS.
1086 # This prevents libgcc2 from containing any code which requires libc
1087 # support.
1088 inhibit_libc=
1089 if [test x$host != x$target] && [test x$with_headers = x]; then
1090 inhibit_libc=-Dinhibit_libc
1091 else
1092 if [test x$with_newlib = xyes]; then
1093 inhibit_libc=-Dinhibit_libc
1094 fi
1095 fi
1096 AC_SUBST(inhibit_libc)
1097
1098 # When building gcc with a cross-compiler, we need to fix a few things.
1099 # This must come after cross-make as we want all.build to override
1100 # all.cross.
1101 build_overrides="/dev/null"
1102 if test x$build != x$host
1103 then
1104 build_overrides="${topdir}/build-make"
1105 fi
1106
1107 # Expand extra_headers to include complete path.
1108 # This substitutes for lots of t-* files.
1109 extra_headers_list=
1110 if test "x$extra_headers" = x
1111 then true
1112 else
1113 # Prepend ${srcdir}/ginclude/ to every entry in extra_headers.
1114 for file in $extra_headers;
1115 do
1116 extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}"
1117 done
1118 fi
1119
1120 if test x$use_collect2 = xno; then
1121 use_collect2=
1122 fi
1123
1124 # Add a definition of USE_COLLECT2 if system wants one.
1125 if test x$use_collect2 != x
1126 then
1127 host_xm_defines="${host_xm_defines} USE_COLLECT2"
1128 xm_defines="${xm_defines} USE_COLLECT2"
1129 fi
1130
1131 # If we have gas in the build tree, make a link to it.
1132 if test -f ../gas/Makefile; then
1133 rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1134 fi
1135
1136 # If we have nm in the build tree, make a link to it.
1137 if test -f ../binutils/Makefile; then
1138 rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1139 fi
1140
1141 # If we have ld in the build tree, make a link to it.
1142 if test -f ../ld/Makefile; then
1143 rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
1144 fi
1145
1146 # Figure out what assembler we will be using.
1147 AC_MSG_CHECKING(what assembler to use)
1148 gcc_cv_as=
1149 gcc_cv_gas_major_version=
1150 gcc_cv_gas_minor_version=
1151 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1152 gcc_cv_as_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1153 if test -x "$DEFAULT_ASSEMBLER"; then
1154 gcc_cv_as="$DEFAULT_ASSEMBLER"
1155 elif test -x "$AS"; then
1156 gcc_cv_as="$AS"
1157 elif test -x as$host_exeext; then
1158 # Build using assembler in the current directory.
1159 gcc_cv_as=./as$host_exeext
1160 elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then
1161 # Single tree build which includes gas.
1162 for f in $gcc_cv_as_bfd_srcdir/configure $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in
1163 do
1164 changequote(,)dnl
1165 gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1166 changequote([,])dnl
1167 if test x$gcc_cv_gas_version != x; then
1168 break
1169 fi
1170 done
1171 changequote(,)dnl
1172 gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"`
1173 gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1174 changequote([,])dnl
1175 fi
1176
1177 if test "x$gcc_cv_as" = x -a x$host = x$target; then
1178 # Native build.
1179 # Search the same directories that the installed compiler will
1180 # search. Else we may find the wrong assembler and lose. If we
1181 # do not find a suitable assembler binary, then try the user's
1182 # path.
1183 #
1184 # Also note we have to check MD_EXEC_PREFIX before checking the
1185 # user's path. Unfortunately, there is no good way to get at the
1186 # value of MD_EXEC_PREFIX here. So we do a brute force search
1187 # through all the known MD_EXEC_PREFIX values. Ugh. This needs
1188 # to be fixed as part of the make/configure rewrite too.
1189
1190 if test "x$exec_prefix" = xNONE; then
1191 if test "x$prefix" = xNONE; then
1192 test_prefix=/usr/local
1193 else
1194 test_prefix=$prefix
1195 fi
1196 else
1197 test_prefix=$exec_prefix
1198 fi
1199
1200 # If the loop below does not find an assembler, then use whatever
1201 # one we can find in the users's path.
1202 # user's path.
1203 gcc_cv_as=as$host_exeext
1204
1205 test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \
1206 $test_prefix/lib/gcc-lib/$target \
1207 /usr/lib/gcc/$target/$gcc_version \
1208 /usr/lib/gcc/$target \
1209 $test_prefix/$target/bin/$target/$gcc_version \
1210 $test_prefix/$target/bin \
1211 /usr/libexec \
1212 /usr/ccs/gcc \
1213 /usr/ccs/bin \
1214 /udk/usr/ccs/bin \
1215 /bsd43/usr/lib/cmplrs/cc \
1216 /usr/cross64/usr/bin \
1217 /usr/lib/cmplrs/cc \
1218 /sysv/usr/lib/cmplrs/cc \
1219 /svr4/usr/lib/cmplrs/cc \
1220 /usr/bin"
1221
1222 for dir in $test_dirs; do
1223 if test -f $dir/as$host_exeext; then
1224 gcc_cv_as=$dir/as$host_exeext
1225 break;
1226 fi
1227 done
1228 fi
1229 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1230 AC_MSG_RESULT("newly built gas")
1231 else
1232 AC_MSG_RESULT($gcc_cv_as)
1233 fi
1234
1235 # Figure out what nm we will be using.
1236 AC_MSG_CHECKING(what nm to use)
1237 if test -x nm$host_exeext; then
1238 gcc_cv_nm=./nm$host_exeext
1239 elif test x$host = x$target; then
1240 # Native build.
1241 gcc_cv_nm=nm$host_exeext
1242 fi
1243 AC_MSG_RESULT($gcc_cv_nm)
1244
1245 # Figure out what assembler alignment features are present.
1246 AC_MSG_CHECKING(assembler alignment features)
1247 gcc_cv_as_alignment_features=none
1248 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1249 # Gas version 2.6 and later support for .balign and .p2align.
1250 # bytes to skip when using .p2align.
1251 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then
1252 gcc_cv_as_alignment_features=".balign and .p2align"
1253 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1254 fi
1255 # Gas version 2.8 and later support specifying the maximum
1256 # bytes to skip when using .p2align.
1257 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then
1258 gcc_cv_as_alignment_features=".p2align including maximum skip"
1259 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1260 fi
1261 elif test x$gcc_cv_as != x; then
1262 # Check if we have .balign and .p2align
1263 echo ".balign 4" > conftest.s
1264 echo ".p2align 2" >> conftest.s
1265 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1266 gcc_cv_as_alignment_features=".balign and .p2align"
1267 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1268 fi
1269 rm -f conftest.s conftest.o
1270 # Check if specifying the maximum bytes to skip when
1271 # using .p2align is supported.
1272 echo ".p2align 4,,7" > conftest.s
1273 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1274 gcc_cv_as_alignment_features=".p2align including maximum skip"
1275 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1276 fi
1277 rm -f conftest.s conftest.o
1278 fi
1279 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1280
1281 AC_MSG_CHECKING(assembler subsection support)
1282 gcc_cv_as_subsections=no
1283 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1284 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1285 gcc_cv_as_subsections="working .subsection -1"
1286 fi
1287 elif test x$gcc_cv_as != x; then
1288 # Check if we have .subsection
1289 echo ".subsection 1" > conftest.s
1290 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1291 gcc_cv_as_subsections=".subsection"
1292 if test x$gcc_cv_nm != x; then
1293 cat > conftest.s <<EOF
1294 conftest_label1: .word 0
1295 .subsection -1
1296 conftest_label2: .word 0
1297 .previous
1298 EOF
1299 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1300 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1301 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1302 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1303 :
1304 else
1305 gcc_cv_as_subsections="working .subsection -1"
1306 fi
1307 fi
1308 fi
1309 fi
1310 rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1311 fi
1312 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1313 AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1314 [Define if your assembler supports .subsection and .subsection -1 starts
1315 emitting at the beginning of your section.])
1316 fi
1317 AC_MSG_RESULT($gcc_cv_as_subsections)
1318
1319 AC_MSG_CHECKING(assembler weak support)
1320 gcc_cv_as_weak=no
1321 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1322 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
1323 gcc_cv_as_weak="yes"
1324 fi
1325 elif test x$gcc_cv_as != x; then
1326 # Check if we have .weak
1327 echo " .weak foobar" > conftest.s
1328 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1329 gcc_cv_as_weak="yes"
1330 fi
1331 rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1332 fi
1333 if test x"$gcc_cv_as_weak" = xyes; then
1334 AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1335 fi
1336 AC_MSG_RESULT($gcc_cv_as_weak)
1337
1338 AC_MSG_CHECKING(assembler hidden support)
1339 gcc_cv_as_hidden=no
1340 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1341 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 10 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1342 gcc_cv_as_hidden="yes"
1343 fi
1344 elif test x$gcc_cv_as != x; then
1345 # Check if we have .hidden
1346 echo " .hidden foobar" > conftest.s
1347 echo "foobar:" >> conftest.s
1348 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1349 gcc_cv_as_hidden="yes"
1350 fi
1351 rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1352 fi
1353 if test x"$gcc_cv_as_hidden" = xyes; then
1354 AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1355 [Define if your assembler supports .hidden.])
1356 fi
1357 AC_MSG_RESULT($gcc_cv_as_hidden)
1358
1359 AC_MSG_CHECKING(assembler leb128 support)
1360 gcc_cv_as_leb128=no
1361 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1362 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 11 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1363 gcc_cv_as_leb128="yes"
1364 fi
1365 elif test x$gcc_cv_as != x; then
1366 # Check if we have .[us]leb128, and support symbol arithmetic with it.
1367 cat > conftest.s <<EOF
1368 .data
1369 .uleb128 L2 - L1
1370 L1:
1371 .uleb128 1280
1372 .sleb128 -1010
1373 L2:
1374 EOF
1375 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1376 gcc_cv_as_leb128="yes"
1377
1378 # GAS versions before 2.11 do not support uleb128,
1379 # despite appearing to.
1380 # ??? There exists an elf-specific test that will crash
1381 # the assembler. Perhaps it's better to figure out whether
1382 # arbitrary sections are supported and try the test.
1383 as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
1384 if echo "$as_ver" | grep GNU > /dev/null; then
1385 changequote(,)dnl
1386 as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
1387 as_major=`echo $as_ver | sed 's/\..*//'`
1388 as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
1389 changequote([,])dnl
1390 if test $as_major -eq 2 -a $as_minor -lt 11; then
1391 gcc_cv_as_leb128="no"
1392 fi
1393 fi
1394 fi
1395 rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1396 fi
1397 if test x"$gcc_cv_as_leb128" = xyes; then
1398 AC_DEFINE(HAVE_AS_LEB128, 1,
1399 [Define if your assembler supports .uleb128.])
1400 fi
1401 AC_MSG_RESULT($gcc_cv_as_leb128)
1402
1403 AC_MSG_CHECKING(assembler eh_frame optimization)
1404 gcc_cv_as_eh_frame=no
1405 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1406 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1407 gcc_cv_as_eh_frame="yes"
1408 fi
1409 elif test x$gcc_cv_as != x; then
1410 # Check if this is GAS.
1411 as_ver=`$gcc_cv_as --version < /dev/null 2> /dev/null | head -1`
1412 rm -f a.out 2> /dev/null
1413 if echo "$as_ver" | grep GNU > /dev/null; then
1414 # Versions up to and including 2.11.0 may mis-optimize
1415 # .eh_frame data. Try something.
1416 cat > conftest.s <<EOF
1417 .text
1418 .LFB1:
1419 .4byte 0
1420 .L1:
1421 .4byte 0
1422 .LFE1:
1423 .section .eh_frame,"aw",@progbits
1424 __FRAME_BEGIN__:
1425 .4byte .LECIE1-.LSCIE1
1426 .LSCIE1:
1427 .4byte 0x0
1428 .byte 0x1
1429 .ascii "z\0"
1430 .byte 0x1
1431 .byte 0x78
1432 .byte 0x1a
1433 .byte 0x0
1434 .byte 0x4
1435 .4byte 1
1436 .p2align 1
1437 .LECIE1:
1438 .LSFDE1:
1439 .4byte .LEFDE1-.LASFDE1
1440 .LASFDE1:
1441 .4byte .LASFDE1-__FRAME_BEGIN__
1442 .4byte .LFB1
1443 .4byte .LFE1-.LFB1
1444 .byte 0x4
1445 .4byte .LFE1-.LFB1
1446 .byte 0x4
1447 .4byte .L1-.LFB1
1448 .LEFDE1:
1449 EOF
1450 cat > conftest.lit <<EOF
1451 0000 10000000 00000000 017a0001 781a0004 .........z..x...
1452 0010 01000000 12000000 18000000 00000000 ................
1453 0020 08000000 04080000 0044 .........D
1454 EOF
1455 cat > conftest.big <<EOF
1456 0000 00000010 00000000 017a0001 781a0004 .........z..x...
1457 0010 00000001 00000012 00000018 00000000 ................
1458 0020 00000008 04000000 0844 .........D
1459 EOF
1460 # If the assembler didn't choke, and we can objdump,
1461 # and we got the correct data, then succeed.
1462 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
1463 && objdump -s -j .eh_frame conftest.o 2>/dev/null \
1464 | tail -3 > conftest.got \
1465 && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
1466 || cmp conftest.big conftest.got > /dev/null 2>&1; }
1467 then
1468 gcc_cv_as_eh_frame="yes"
1469 else
1470 gcc_cv_as_eh_frame="bad"
1471 if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then
1472 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
1473 [Define if your assembler mis-optimizes .eh_frame data.])
1474 fi
1475 fi
1476 fi
1477 rm -f conftest.*
1478 fi
1479 AC_MSG_RESULT($gcc_cv_as_eh_frame)
1480
1481 AC_MSG_CHECKING(assembler section merging support)
1482 gcc_cv_as_shf_merge=no
1483 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1484 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 12 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1485 gcc_cv_as_shf_merge=yes
1486 fi
1487 elif test x$gcc_cv_as != x; then
1488 # Check if we support SHF_MERGE sections
1489 echo '.section .rodata.str, "aMS", @progbits, 1' > conftest.s
1490 if $gcc_cv_as --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1; then
1491 gcc_cv_as_shf_merge=yes
1492 fi
1493 rm -f conftest.s conftest.o
1494 fi
1495 if test x"$gcc_cv_as_shf_merge" = xyes; then
1496 AC_DEFINE(HAVE_GAS_SHF_MERGE, 1,
1497 [Define if your assembler supports marking sections with SHF_MERGE flag.])
1498 fi
1499 AC_MSG_RESULT($gcc_cv_as_shf_merge)
1500
1501 case "$target" in
1502 sparc*-*-*)
1503 AC_CACHE_CHECK([assembler .register pseudo-op support],
1504 gcc_cv_as_register_pseudo_op, [
1505 gcc_cv_as_register_pseudo_op=unknown
1506 if test x$gcc_cv_as != x; then
1507 # Check if we have .register
1508 echo ".register %g2, #scratch" > conftest.s
1509 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1510 gcc_cv_as_register_pseudo_op=yes
1511 else
1512 gcc_cv_as_register_pseudo_op=no
1513 fi
1514 rm -f conftest.s conftest.o
1515 fi
1516 ])
1517 if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
1518 AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
1519 [Define if your assembler supports .register.])
1520 fi
1521
1522 AC_CACHE_CHECK([assembler supports -relax],
1523 gcc_cv_as_relax_opt, [
1524 gcc_cv_as_relax_opt=unknown
1525 if test x$gcc_cv_as != x; then
1526 # Check if gas supports -relax
1527 echo ".text" > conftest.s
1528 if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
1529 gcc_cv_as_relax_opt=yes
1530 else
1531 gcc_cv_as_relax_opt=no
1532 fi
1533 rm -f conftest.s conftest.o
1534 fi
1535 ])
1536 if test "x$gcc_cv_as_relax_opt" = xyes; then
1537 AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
1538 [Define if your assembler supports -relax option.])
1539 fi
1540
1541 case "$tm_file" in
1542 *64*)
1543 AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)],
1544 gcc_cv_as_flags64, [
1545 if test -n "$gcc_cv_as"; then
1546 echo ".xword foo" > conftest.s
1547 gcc_cv_as_flags64=no
1548 for flag in "-xarch=v9" "-64 -Av9"; do
1549 if $gcc_cv_as $flag -o conftest.o conftest.s \
1550 > /dev/null 2>&1; then
1551 gcc_cv_as_flags64=$flag
1552 break
1553 fi
1554 done
1555 rm -f conftest.s conftest.o
1556 else
1557 if test "$gas" = yes; then
1558 gcc_cv_as_flags64="-64 -Av9"
1559 else
1560 gcc_cv_as_flags64="-xarch=v9"
1561 fi
1562 fi
1563 ])
1564 if test "x$gcc_cv_as_flags64" = xno; then
1565 changequote(, )
1566 tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1567 dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1568 changequote([, ])
1569 else
1570 AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64",
1571 [Define if the assembler supports 64bit sparc.])
1572 fi
1573 ;;
1574 *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no}
1575 ;;
1576 esac
1577
1578 if test "x$gcc_cv_as_flags64" != xno; then
1579 AC_CACHE_CHECK([for assembler offsetable %lo() support],
1580 gcc_cv_as_offsetable_lo10, [
1581 gcc_cv_as_offsetable_lo10=unknown
1582 if test "x$gcc_cv_as" != x; then
1583 # Check if assembler has offsetable %lo()
1584 echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
1585 echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
1586 if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \
1587 > /dev/null 2>&1 &&
1588 $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \
1589 > /dev/null 2>&1; then
1590 if cmp conftest.o conftest1.o > /dev/null 2>&1; then
1591 gcc_cv_as_offsetable_lo10=no
1592 else
1593 gcc_cv_as_offsetable_lo10=yes
1594 fi
1595 else
1596 gcc_cv_as_offsetable_lo10=no
1597 fi
1598 rm -f conftest.s conftest.o conftest1.s conftest1.o
1599 fi
1600 ])
1601 if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
1602 AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
1603 [Define if your assembler supports offsetable %lo().])
1604 fi
1605 fi
1606
1607 ;;
1608
1609 changequote(,)dnl
1610 i[34567]86-*-* | x86_64-*-*)
1611 changequote([,])dnl
1612 AC_MSG_CHECKING(assembler instructions)
1613 gcc_cv_as_instructions=
1614 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1615 if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
1616 gcc_cv_as_instructions="filds fists"
1617 fi
1618 elif test x$gcc_cv_as != x; then
1619 set "filds fists" "filds mem; fists mem"
1620 while test $# -gt 0
1621 do
1622 echo "$2" > conftest.s
1623 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1624 gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
1625 fi
1626 shift 2
1627 done
1628 rm -f conftest.s conftest.o
1629 fi
1630 if test x"$gcc_cv_as_instructions" != x; then
1631 AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
1632 fi
1633 AC_MSG_RESULT($gcc_cv_as_instructions)
1634
1635 AC_MSG_CHECKING(assembler GOTOFF in data directives)
1636 gcc_cv_as_gotoff_in_data=no
1637 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x
1638 then
1639 if test "$gcc_cv_gas_major_version" -eq 2 \
1640 -a "$gcc_cv_gas_minor_version" -ge 11 \
1641 -o "$gcc_cv_gas_major_version" -gt 2; then
1642 gcc_cv_as_gotoff_in_data=yes
1643 fi
1644 elif test x$gcc_cv_as != x; then
1645 cat > conftest.s <<EOF
1646 .text
1647 .L0:
1648 nop
1649 .data
1650 .long .L0@GOTOFF
1651 EOF
1652 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1653 gcc_cv_as_gotoff_in_data=yes
1654 fi
1655 fi
1656 AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
1657 [`if test $gcc_cv_as_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
1658 [Define true if the assembler supports '.long foo@GOTOFF'.])
1659 AC_MSG_RESULT($gcc_cv_as_gotoff_in_data)
1660 ;;
1661 esac
1662
1663 AC_MSG_CHECKING(assembler dwarf2 debug_line support)
1664 gcc_cv_as_dwarf2_debug_line=no
1665 # ??? Not all targets support dwarf2 debug_line, even within a version
1666 # of gas. Moreover, we need to emit a valid instruction to trigger any
1667 # info to the output file. So, as supported targets are added to gas 2.11,
1668 # add some instruction here to (also) show we expect this might work.
1669 # ??? Once 2.11 is released, probably need to add first known working
1670 # version to the per-target configury.
1671 case "$target" in
1672 i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* | x86_64*-*-*)
1673 insn="nop"
1674 ;;
1675 ia64*-*-*)
1676 insn="nop 0"
1677 ;;
1678 esac
1679 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
1680 then
1681 if test "$gcc_cv_gas_major_version" -eq 2 \
1682 -a "$gcc_cv_gas_minor_version" -ge 11 \
1683 -o "$gcc_cv_gas_major_version" -gt 2 \
1684 && grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1685 && test x"$insn" != x ; then
1686 gcc_cv_as_dwarf2_debug_line="yes"
1687 fi
1688 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
1689 echo ' .file 1 "conftest.s"' > conftest.s
1690 echo ' .loc 1 3 0' >> conftest.s
1691 echo " $insn" >> conftest.s
1692 # ??? This fails with non-gnu grep.
1693 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
1694 && grep debug_line conftest.o > /dev/null 2>&1 ; then
1695 # The .debug_line file table must be in the exact order that
1696 # we specified the files, since these indices are also used
1697 # by DW_AT_decl_file. Approximate this test by testing if
1698 # the assembler bitches if the same index is assigned twice.
1699 echo ' .file 1 "foo.s"' > conftest.s
1700 echo ' .file 1 "bar.s"' >> conftest.s
1701 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1
1702 then
1703 gcc_cv_as_dwarf2_debug_line="no"
1704 else
1705 gcc_cv_as_dwarf2_debug_line="yes"
1706 fi
1707 fi
1708 rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1709 fi
1710 if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
1711 AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
1712 [Define if your assembler supports dwarf2 .file/.loc directives,
1713 and preserves file table indices exactly as given.])
1714 fi
1715 AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
1716
1717 if test "$prefix" != "/usr" && test "$prefix" != "/usr/local" ; then
1718 AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include")
1719 fi
1720
1721 # Figure out what language subdirectories are present.
1722 # Look if the user specified --enable-languages="..."; if not, use
1723 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1724 # go away some day.
1725 # NB: embedded tabs in this IF block -- do not untabify
1726 if test x"${enable_languages+set}" != xset; then
1727 if test x"${LANGUAGES+set}" = xset; then
1728 enable_languages="${LANGUAGES}"
1729 AC_MSG_WARN([setting LANGUAGES is deprecated, use --enable-languages instead])
1730
1731 else
1732 enable_languages=all
1733 fi
1734 else
1735 if test x"${enable_languages}" = x ||
1736 test x"${enable_languages}" = xyes;
1737 then
1738 AC_MSG_ERROR([--enable-languages needs at least one language argument])
1739 fi
1740 fi
1741 enable_languages=`echo "${enable_languages}" | sed -e 's/[[ ,]][[ ,]]*/,/g' -e 's/,$//'`
1742
1743 # First scan to see if an enabled language requires some other language.
1744 # We assume that a given config-lang.in will list all the language
1745 # front ends it requires, even if some are required indirectly.
1746 for lang in ${srcdir}/*/config-lang.in ..
1747 do
1748 case $lang in
1749 ..)
1750 ;;
1751 # The odd quoting in the next line works around
1752 # an apparent bug in bash 1.12 on linux.
1753 changequote(,)dnl
1754 ${srcdir}/[*]/config-lang.in)
1755 ;;
1756 *)
1757 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
1758 this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^ ]*\).*$,\1,p' $lang`
1759 for other in $this_lang_requires
1760 do
1761 case ,${enable_languages}, in
1762 *,$other,*)
1763 ;;
1764 *,all,*)
1765 ;;
1766 *,$lang_alias,*)
1767 enable_languages="$enable_languages,$other"
1768 ;;
1769 esac
1770 done
1771 ;;
1772 changequote([,])dnl
1773 esac
1774 done
1775
1776 subdirs=
1777 for lang in ${srcdir}/*/config-lang.in ..
1778 do
1779 case $lang in
1780 ..) ;;
1781 # The odd quoting in the next line works around
1782 # an apparent bug in bash 1.12 on linux.
1783 changequote(,)dnl
1784 ${srcdir}/[*]/config-lang.in) ;;
1785 *)
1786 lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^ ]*\).*$,\1,p' $lang`
1787 this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^ ]*\).*$,\1,p' $lang`
1788 build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^ ]*\).*$,\1,p' $lang`
1789 if test "x$lang_alias" = x
1790 then
1791 echo "$lang doesn't set \$language." 1>&2
1792 exit 1
1793 fi
1794 case ${build_by_default},${enable_languages}, in
1795 *,$lang_alias,*) add_this_lang=yes ;;
1796 no,*) add_this_lang=no ;;
1797 *,all,*) add_this_lang=yes ;;
1798 *) add_this_lang=no ;;
1799 esac
1800 if test x"${add_this_lang}" = xyes; then
1801 case $lang in
1802 ${srcdir}/ada/config-lang.in)
1803 if test x$have_gnat = xyes ; then
1804 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1805 fi
1806 ;;
1807 *)
1808 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1809 ;;
1810 esac
1811 fi
1812 ;;
1813 changequote([,])dnl
1814 esac
1815 done
1816
1817 # Make gthr-default.h if we have a thread file.
1818 gthread_flags=
1819 if test $thread_file != single; then
1820 rm -f gthr-default.h
1821 echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1822 gthread_flags=-DHAVE_GTHR_DEFAULT
1823 fi
1824 AC_SUBST(gthread_flags)
1825
1826 # Find out what GC implementation we want, or may, use.
1827 AC_ARG_WITH(gc,
1828 [ --with-gc={simple,page} choose the garbage collection mechanism to use
1829 with the compiler],
1830 [case "$withval" in
1831 simple | page)
1832 GGC=ggc-$withval
1833 ;;
1834 *)
1835 AC_MSG_ERROR([$withval is an invalid option to --with-gc])
1836 ;;
1837 esac],
1838 [GGC=ggc-page])
1839 AC_SUBST(GGC)
1840 echo "Using $GGC for garbage collection."
1841
1842 # Use the system's zlib library.
1843 zlibdir=-L../zlib
1844 zlibinc="-I\$(srcdir)/../zlib"
1845 AC_ARG_WITH(system-zlib,
1846 [ --with-system-zlib use installed libz],
1847 zlibdir=
1848 zlibinc=
1849 )
1850 AC_SUBST(zlibdir)
1851 AC_SUBST(zlibinc)
1852
1853 dnl Very limited version of automake's enable-maintainer-mode
1854
1855 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1856 dnl maintainer-mode is disabled by default
1857 AC_ARG_ENABLE(maintainer-mode,
1858 [ --enable-maintainer-mode
1859 enable make rules and dependencies not useful
1860 (and sometimes confusing) to the casual installer],
1861 maintainer_mode=$enableval,
1862 maintainer_mode=no)
1863
1864 AC_MSG_RESULT($maintainer_mode)
1865
1866 if test "$maintainer_mode" = "yes"; then
1867 MAINT=''
1868 else
1869 MAINT='#'
1870 fi
1871 AC_SUBST(MAINT)dnl
1872
1873 # With Setjmp/Longjmp based exception handling.
1874 AC_ARG_ENABLE(sjlj-exceptions,
1875 [ --enable-sjlj-exceptions
1876 arrange to use setjmp/longjmp exception handling],
1877 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1878 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1879 [Define 0/1 to force the choice for exception handling model.])])
1880
1881 # Make empty files to contain the specs and options for each language.
1882 # Then add #include lines to for a compiler that has specs and/or options.
1883
1884 lang_specs_files=
1885 lang_options_files=
1886 lang_tree_files=
1887 rm -f specs.h options.h gencheck.h
1888 touch specs.h options.h gencheck.h
1889 for subdir in . $subdirs
1890 do
1891 if test -f $srcdir/$subdir/lang-specs.h; then
1892 echo "#include \"$subdir/lang-specs.h\"" >>specs.h
1893 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
1894 fi
1895 if test -f $srcdir/$subdir/lang-options.h; then
1896 echo "#include \"$subdir/lang-options.h\"" >>options.h
1897 lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
1898 fi
1899 if test -f $srcdir/$subdir/$subdir-tree.def; then
1900 echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h
1901 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
1902 fi
1903 done
1904
1905 # These (without "all_") are set in each config-lang.in.
1906 # `language' must be a single word so is spelled singularly.
1907 all_languages=
1908 all_boot_languages=
1909 all_compilers=
1910 all_stagestuff=
1911 all_diff_excludes=
1912 all_outputs='Makefile intl/Makefile fixinc/Makefile gccbug mklibgcc'
1913 # List of language makefile fragments.
1914 all_lang_makefiles=
1915 all_headers=
1916 all_lib2funcs=
1917
1918 # Add the language fragments.
1919 # Languages are added via two mechanisms. Some information must be
1920 # recorded in makefile variables, these are defined in config-lang.in.
1921 # We accumulate them and plug them into the main Makefile.
1922 # The other mechanism is a set of hooks for each of the main targets
1923 # like `clean', `install', etc.
1924
1925 language_fragments="Make-lang"
1926 language_hooks="Make-hooks"
1927
1928 for s in .. $subdirs
1929 do
1930 if test $s != ".."
1931 then
1932 language=
1933 boot_language=
1934 compilers=
1935 stagestuff=
1936 diff_excludes=
1937 headers=
1938 outputs=
1939 lib2funcs=
1940 . ${srcdir}/$s/config-lang.in
1941 if test "x$language" = x
1942 then
1943 echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
1944 exit 1
1945 fi
1946 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
1947 if test -f ${srcdir}/$s/Makefile.in
1948 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
1949 fi
1950 all_languages="$all_languages $language"
1951 if test "x$boot_language" = xyes
1952 then
1953 all_boot_languages="$all_boot_languages $language"
1954 fi
1955 all_compilers="$all_compilers $compilers"
1956 all_stagestuff="$all_stagestuff $stagestuff"
1957 all_diff_excludes="$all_diff_excludes $diff_excludes"
1958 all_headers="$all_headers $headers"
1959 all_outputs="$all_outputs $outputs"
1960 all_lib2funcs="$all_lib2funcs $lib2funcs"
1961 fi
1962 done
1963
1964 check_languages=
1965 for language in .. $all_languages
1966 do
1967 if test $language != ".."
1968 then
1969 check_languages="$check_languages check-$language"
1970 fi
1971 done
1972
1973 # Since we can't use `::' targets, we link each language in
1974 # with a set of hooks, reached indirectly via lang.${target}.
1975
1976 rm -f Make-hooks
1977 touch Make-hooks
1978 target_list="all.build all.cross start.encap rest.encap \
1979 info dvi \
1980 install-normal install-common install-info install-man \
1981 uninstall \
1982 mostlyclean clean distclean extraclean maintainer-clean \
1983 stage1 stage2 stage3 stage4"
1984 for t in $target_list
1985 do
1986 x=
1987 for lang in .. $all_languages
1988 do
1989 if test $lang != ".."; then
1990 x="$x $lang.$t"
1991 fi
1992 done
1993 echo "lang.$t: $x" >> Make-hooks
1994 done
1995
1996 # Create .gdbinit.
1997
1998 echo "dir ." > .gdbinit
1999 echo "dir ${srcdir}" >> .gdbinit
2000 if test x$gdb_needs_out_file_path = xyes
2001 then
2002 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
2003 fi
2004 if test "x$subdirs" != x; then
2005 for s in $subdirs
2006 do
2007 echo "dir ${srcdir}/$s" >> .gdbinit
2008 done
2009 fi
2010 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
2011
2012 # Define variables host_canonical and build_canonical
2013 # because some Cygnus local changes in the Makefile depend on them.
2014 build_canonical=${build}
2015 host_canonical=${host}
2016 target_subdir=
2017 if test "${host}" != "${target}" ; then
2018 target_subdir=${target_alias}/
2019 fi
2020 AC_SUBST(build_canonical)
2021 AC_SUBST(host_canonical)
2022 AC_SUBST(target_subdir)
2023
2024 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
2025 # absolute path for gcc_tooldir based on inserting the number of up-directory
2026 # movements required to get from $(exec_prefix) to $(prefix) into the basic
2027 # $(libsubdir)/@(unlibsubdir) based path.
2028 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
2029 # make and thus we'd get different behavior depending on where we built the
2030 # sources.
2031 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
2032 gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
2033 else
2034 changequote(<<, >>)dnl
2035 # An explanation of the sed strings:
2036 # -e 's|^\$(prefix)||' matches and eliminates 'prefix' from 'exec_prefix'
2037 # -e 's|/$||' match a trailing forward slash and eliminates it
2038 # -e 's|^[^/]|/|' forces the string to start with a forward slash (*)
2039 # -e 's|/[^/]*|../|g' replaces each occurrence of /<directory> with ../
2040 #
2041 # (*) Note this pattern overwrites the first character of the string
2042 # with a forward slash if one is not already present. This is not a
2043 # problem because the exact names of the sub-directories concerned is
2044 # unimportant, just the number of them matters.
2045 #
2046 # The practical upshot of these patterns is like this:
2047 #
2048 # prefix exec_prefix result
2049 # ------ ----------- ------
2050 # /foo /foo/bar ../
2051 # /foo/ /foo/bar ../
2052 # /foo /foo/bar/ ../
2053 # /foo/ /foo/bar/ ../
2054 # /foo /foo/bar/ugg ../../
2055 #
2056 dollar='$$'
2057 gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
2058 changequote([, ])dnl
2059 fi
2060 AC_SUBST(gcc_tooldir)
2061 AC_SUBST(dollar)
2062
2063 # Find a directory in which to install a shared libgcc.
2064
2065 AC_ARG_ENABLE(version-specific-runtime-libs,
2066 [ --enable-version-specific-runtime-libs
2067 specify that runtime libraries should be
2068 installed in a compiler-specific directory])
2069
2070 AC_ARG_WITH(slibdir,
2071 [ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
2072 slibdir="$with_slibdir",
2073 if test "${enable_version_specific_runtime_libs+set}" = set; then
2074 slibdir='$(libsubdir)'
2075 elif test "$host" != "$target"; then
2076 slibdir='$(build_tooldir)/lib'
2077 else
2078 slibdir='$(libdir)'
2079 fi)
2080 AC_SUBST(slibdir)
2081
2082 # Nothing to do for FLOAT_H, float_format already handled.
2083 objdir=`pwd`
2084 AC_SUBST(objdir)
2085
2086 # Process the language and host/target makefile fragments.
2087 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
2088
2089 # Substitute configuration variables
2090 AC_SUBST(subdirs)
2091 AC_SUBST(all_boot_languages)
2092 AC_SUBST(all_compilers)
2093 AC_SUBST(all_diff_excludes)
2094 AC_SUBST(all_headers)
2095 AC_SUBST(all_lang_makefiles)
2096 AC_SUBST(all_languages)
2097 AC_SUBST(all_lib2funcs)
2098 AC_SUBST(all_stagestuff)
2099 AC_SUBST(build_exeext)
2100 AC_SUBST(build_install_headers_dir)
2101 AC_SUBST(build_xm_file_list)
2102 AC_SUBST(build_xm_file)
2103 AC_SUBST(build_xm_defines)
2104 AC_SUBST(check_languages)
2105 AC_SUBST(cc_set_by_configure)
2106 AC_SUBST(quoted_cc_set_by_configure)
2107 AC_SUBST(cpp_install_dir)
2108 AC_SUBST(dep_host_xmake_file)
2109 AC_SUBST(dep_tmake_file)
2110 AC_SUBST(extra_c_flags)
2111 AC_SUBST(extra_headers_list)
2112 AC_SUBST(extra_objs)
2113 AC_SUBST(extra_parts)
2114 AC_SUBST(extra_passes)
2115 AC_SUBST(extra_programs)
2116 AC_SUBST(float_h_file)
2117 AC_SUBST(gcc_config_arguments)
2118 AC_SUBST(gcc_gxx_include_dir)
2119 AC_SUBST(libstdcxx_incdir)
2120 AC_SUBST(gcc_version)
2121 AC_SUBST(gcc_version_full)
2122 AC_SUBST(gcc_version_trigger)
2123 AC_SUBST(host_exeext)
2124 AC_SUBST(host_extra_gcc_objs)
2125 AC_SUBST(host_xm_file_list)
2126 AC_SUBST(host_xm_file)
2127 AC_SUBST(host_xm_defines)
2128 AC_SUBST(install)
2129 AC_SUBST(lang_options_files)
2130 AC_SUBST(lang_specs_files)
2131 AC_SUBST(lang_tree_files)
2132 AC_SUBST(local_prefix)
2133 AC_SUBST(md_file)
2134 AC_SUBST(objc_boehm_gc)
2135 AC_SUBST(out_file)
2136 AC_SUBST(out_object_file)
2137 AC_SUBST(stage_prefix_set_by_configure)
2138 AC_SUBST(symbolic_link)
2139 AC_SUBST(thread_file)
2140 AC_SUBST(tm_file_list)
2141 AC_SUBST(tm_file)
2142 AC_SUBST(tm_p_file_list)
2143 AC_SUBST(tm_p_file)
2144 AC_SUBST(xm_file)
2145 AC_SUBST(xm_defines)
2146 AC_SUBST(c_target_objs)
2147 AC_SUBST(cxx_target_objs)
2148 AC_SUBST(target_cpu_default)
2149
2150 AC_SUBST_FILE(target_overrides)
2151 AC_SUBST_FILE(host_overrides)
2152 AC_SUBST(cross_defines)
2153 AC_SUBST_FILE(cross_overrides)
2154 AC_SUBST_FILE(build_overrides)
2155 AC_SUBST_FILE(language_fragments)
2156 AC_SUBST_FILE(language_hooks)
2157
2158 # Echo that links are built
2159 if test x$host = x$target
2160 then
2161 str1="native "
2162 else
2163 str1="cross-"
2164 str2=" from $host"
2165 fi
2166
2167 if test x$host != x$build
2168 then
2169 str3=" on a $build system"
2170 fi
2171
2172 if test "x$str2" != x || test "x$str3" != x
2173 then
2174 str4=
2175 fi
2176
2177 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
2178
2179 if test "x$str2" != x || test "x$str3" != x
2180 then
2181 echo " ${str2}${str3}." 1>&2
2182 fi
2183
2184 # Truncate the target if necessary
2185 if test x$host_truncate_target != x; then
2186 target=`echo $target | sed -e 's/\(..............\).*/\1/'`
2187 fi
2188
2189 # Configure the subdirectories
2190 # AC_CONFIG_SUBDIRS($subdirs)
2191
2192 # Create the Makefile
2193 # and configure language subdirectories
2194 AC_OUTPUT($all_outputs,
2195 [
2196 case x$CONFIG_HEADERS in
2197 xauto-host.h:config.in)
2198 echo > cstamp-h ;;
2199 esac
2200 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
2201 # bootstrapping and the installation procedure can still use
2202 # CC="stage1/xgcc -Bstage1/". If the host doesn't support symlinks,
2203 # FLAGS_TO_PASS has been modified to solve the problem there.
2204 # This is virtually a duplicate of what happens in configure.lang; we do
2205 # an extra check to make sure this only happens if ln -s can be used.
2206 if test "$symbolic_link" = "ln -s"; then
2207 for d in .. ${subdirs} ; do
2208 if test $d != ..; then
2209 STARTDIR=`pwd`
2210 cd $d
2211 for t in stage1 stage2 stage3 stage4 include
2212 do
2213 rm -f $t
2214 $symbolic_link ../$t $t 2>/dev/null
2215 done
2216 cd $STARTDIR
2217 fi
2218 done
2219 else true ; fi
2220 # Avoid having to add intl to our include paths.
2221 if test -f intl/libintl.h; then
2222 echo creating libintl.h
2223 echo '#include "intl/libintl.h"' >libintl.h
2224 fi
2225 ],
2226 [
2227 host='${host}'
2228 build='${build}'
2229 target='${target}'
2230 target_alias='${target_alias}'
2231 srcdir='${srcdir}'
2232 subdirs='${subdirs}'
2233 symbolic_link='${symbolic_link}'
2234 program_transform_set='${program_transform_set}'
2235 program_transform_name='${program_transform_name}'
2236 dep_host_xmake_file='${dep_host_xmake_file}'
2237 host_xmake_file='${host_xmake_file}'
2238 dep_tmake_file='${dep_tmake_file}'
2239 tmake_file='${tmake_file}'
2240 thread_file='${thread_file}'
2241 gcc_config_arguments='${gcc_config_arguments}'
2242 gcc_version='${gcc_version}'
2243 gcc_version_full='${gcc_version_full}'
2244 gcc_version_trigger='${gcc_version_trigger}'
2245 local_prefix='${local_prefix}'
2246 build_install_headers_dir='${build_install_headers_dir}'
2247 build_exeext='${build_exeext}'
2248 host_exeext='${host_exeext}'
2249 out_file='${out_file}'
2250 gdb_needs_out_file_path='${gdb_needs_out_file_path}'
2251 SET_MAKE='${SET_MAKE}'
2252 target_list='${target_list}'
2253 target_overrides='${target_overrides}'
2254 host_overrides='${host_overrides}'
2255 cross_defines='${cross_defines}'
2256 cross_overrides='${cross_overrides}'
2257 build_overrides='${build_overrides}'
2258 cpp_install_dir='${cpp_install_dir}'
2259 ])