1 dnl aclocal.m4 generated automatically by aclocal 1.4
3 dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 dnl This program is distributed in the hope that it will be useful,
9 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
10 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
11 dnl PARTICULAR PURPOSE.
14 dnl Initialize configure bits.
16 dnl Define OPTLEVEL='-O2' if new inlining code present.
19 AC_DEFUN(GLIBCPP_CONFIGURE, [
20 dnl Default to --enable-multilib
21 AC_ARG_ENABLE(multilib,
22 [ --enable-multilib build hella library versions (default)],
23 [case "${enableval}" in
26 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
27 esac], [multilib=yes])dnl
29 glibcpp_basedir=$auxdir/$1/libstdc++-v3
30 AC_SUBST(glibcpp_basedir)
32 AM_INIT_AUTOMAKE(libstdc++, 2.92)
34 # Never versions of autoconf add an underscore to these functions.
35 # Prevent future problems ...
36 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
37 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
38 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
39 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
43 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
44 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
45 # are probably using a cross compiler, which will not be able to fully
46 # link an executable. This should really be fixed in autoconf
49 AC_DEFUN(LIB_AC_PROG_CC,
50 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
51 dnl Fool anybody using AC_PROG_CC.
52 AC_PROVIDE([AC_PROG_CC])
53 AC_CHECK_PROG(CC, gcc, gcc)
54 if test -z "$CC"; then
55 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
56 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
61 if test $ac_cv_prog_gcc = yes; then
63 dnl Check whether -g works, even if CFLAGS is set, in case the package
64 dnl plays around with CFLAGS (such as to build both debugging and
65 dnl normal versions of a library), tasteless as that idea is.
66 ac_test_CFLAGS="${CFLAGS+set}"
67 ac_save_CFLAGS="$CFLAGS"
70 if test "$ac_test_CFLAGS" = set; then
71 CFLAGS="$ac_save_CFLAGS"
72 elif test $ac_cv_prog_cc_g = yes; then
79 test "${CFLAGS+set}" = set || CFLAGS="-g"
85 # Can't just call these here as g++ requires libstc++ to be built....
88 # Likewise for AC_PROG_CXX.
89 AC_DEFUN(LIB_AC_PROG_CXX,
90 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
91 dnl Fool anybody using AC_PROG_CXX.
92 AC_PROVIDE([AC_PROG_CXX])
93 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
94 # flags that come in CXX while configuring libstdc++. They're different
95 # from those used for all other target libraries. If CXX is set in
96 # the environment, respect that here.
98 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
101 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
105 if test $ac_cv_prog_gxx = yes; then
107 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
108 dnl plays around with CXXFLAGS (such as to build both debugging and
109 dnl normal versions of a library), tasteless as that idea is.
110 ac_test_CXXFLAGS="${CXXFLAGS+set}"
111 ac_save_CXXFLAGS="$CXXFLAGS"
114 if test "$ac_test_CXXFLAGS" = set; then
115 CXXFLAGS="$ac_save_CXXFLAGS"
116 elif test $ac_cv_prog_cxx_g = yes; then
123 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
129 AC_CHECK_TOOL(AS, as)
130 AC_CHECK_TOOL(AR, ar)
131 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
136 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
137 # at least currently, we never actually build a program, so we never
138 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
139 # fails, because we are probably configuring with a cross compiler
140 # which cant create executables. So we include AC_EXEEXT to keep
141 # automake happy, but we dont execute it, since we dont care about
147 . [$]{glibcpp_basedir}/configure.host
149 case [$]{glibcpp_basedir} in
150 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
151 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
154 # This does for the target what configure.host does for the host. In
155 # addition to possibly modifying the same flags, it also sets up symlinks.
161 dnl Check to see if g++ can compile this library, and if so, if any version-
162 dnl specific precautions need to be taken.
164 dnl GLIBCPP_CHECK_COMPILER_VERSION
165 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
166 if test ! -f stamp-sanity-compiler; then
167 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
174 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
176 AC_MSG_RESULT($gpp_satisfactory)
177 touch stamp-sanity-compiler
183 dnl Test for newer compiler features, or features that are present in newer
184 dnl compiler version but not older compiler versions should be placed
187 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
188 dnl new inlining code or the new system_header pragma will die on -Werror.
189 dnl Leave it out by default and use maint-mode to use it.
191 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
192 dnl compiler supports it and the user has not requested debug mode.
194 dnl GLIBCPP_CHECK_COMPILER_FEATURES
195 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
196 # All these tests are for C++; save the language and the compiler flags.
197 # The CXXFLAGS thing is suspicious, but based on similar bits
198 # found in GLIBCPP_CONFIGURE.
201 ac_test_CXXFLAGS="${CXXFLAGS+set}"
202 ac_save_CXXFLAGS="$CXXFLAGS"
204 # Check for maintainer-mode bits.
205 if test x"$USE_MAINTAINER_MODE" = xno; then
211 # Check for -ffunction-sections -fdata-sections
212 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
213 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
214 AC_TRY_COMPILE(, [int foo;
215 ], [ac_fdsections=yes], [ac_fdsections=no])
216 if test "$ac_test_CXXFLAGS" = set; then
217 CXXFLAGS="$ac_save_CXXFLAGS"
219 # this is the suspicious part
222 if test x"$ac_fdsections" = x"yes" && test x"$enable_debug" = x"no"; then
223 SECTION_FLAGS='-ffunction-sections -fdata-sections'
225 AC_MSG_RESULT($ac_fdsections)
229 AC_SUBST(SECTION_FLAGS)
234 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
235 dnl the native linker is in use, all variables will be defined to something
236 dnl safe (like an empty string).
238 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
239 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
241 dnl GLIBCPP_CHECK_LINKER_FEATURES
242 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
243 # If we're not using GNU ld, then there's no point in even trying these
244 # tests. Check for that first. We should have already tested for gld
245 # by now (in libtool), but require it now just to be safe...
248 AC_REQUIRE([AC_PROG_LD])
251 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
252 # GNU ld it is! Joy and bunny rabbits!
254 # All these tests are for C++; save the language and the compiler flags.
255 # Need to do this so that g++ won't try to link in libstdc++
256 ac_test_CFLAGS="${CFLAGS+set}"
257 ac_save_CFLAGS="$CFLAGS"
258 CFLAGS='-x c++ -Wl,--gc-sections'
260 # Check for -Wl,--gc-sections
261 # XXX This test is broken at the moment, as symbols required for
262 # linking are now in libsupc++ (not built yet.....). In addition,
263 # this test has cored on solaris in the past. In addition,
264 # --gc-sections doesn't really work at the moment (keeps on discarding
265 # used sections, first .eh_frame and now some of the glibc sections for
266 # iconv). Bzzzzt. Thanks for playing, maybe next time.
267 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
275 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
276 if test "$ac_test_CFLAGS" = set; then
277 CFLAGS="$ac_save_CFLAGS"
279 # this is the suspicious part
282 if test "$ac_sectionLDflags" = "yes"; then
283 SECTION_LDFLAGS='-Wl,--gc-sections'
285 AC_MSG_RESULT($ac_sectionLDflags)
288 # Set linker optimization flags.
289 if test x"$ac_cv_prog_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
290 OPT_LDFLAGS='-Wl,-O1'
293 AC_SUBST(SECTION_LDFLAGS)
294 AC_SUBST(OPT_LDFLAGS)
299 dnl Check to see if the (math function) argument passed is
300 dnl declared when using the c++ compiler
301 dnl ASSUMES argument is a math function with ONE parameter
303 dnl GLIBCPP_CHECK_MATH_DECL_1
304 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
305 AC_MSG_CHECKING([for $1 declaration])
306 if test x${glibcpp_cv_func_$1_use+set} != xset; then
307 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
310 AC_TRY_COMPILE([#include <math.h>
316 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
320 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
324 dnl Check to see if the (math function) argument passed is
325 dnl 1) declared when using the c++ compiler
326 dnl 2) has "C" linkage
327 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
329 dnl Define HAVE_CARGF etc if "cargf" is declared and links
331 dnl argument 1 is name of function to check
333 dnl ASSUMES argument is a math function with ONE parameter
335 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
336 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
337 GLIBCPP_CHECK_MATH_DECL_1($1)
338 if test x$glibcpp_cv_func_$1_use = x"yes"; then
341 GLIBCPP_CHECK_MATH_DECL_1(_$1)
342 if test x$glibcpp_cv_func__$1_use = x"yes"; then
350 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
351 dnl of functions at once. It's an all-or-nothing check -- either
352 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
353 dnl Doing it this way saves significant configure time.
354 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
355 AC_MSG_CHECKING([for $1 functions])
356 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
359 AC_TRY_COMPILE([#include <math.h>],
360 [ `for x in $3; do echo "$x (0);"; done` ],
361 [glibcpp_cv_func_$2_use=yes],
362 [glibcpp_cv_func_$2_use=no])
364 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
365 if test x$glibcpp_cv_func_$2_use = x"yes"; then
371 dnl Check to see if the (math function) argument passed is
372 dnl declared when using the c++ compiler
373 dnl ASSUMES argument is a math function with ONE parameter
375 dnl GLIBCPP_CHECK_MATH_DECL_2
376 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
377 AC_MSG_CHECKING([for $1 declaration])
378 if test x${glibcpp_cv_func_$1_use+set} != xset; then
379 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
382 AC_TRY_COMPILE([#include <math.h>],
384 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
388 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
392 dnl Check to see if the (math function) argument passed is
393 dnl 1) declared when using the c++ compiler
394 dnl 2) has "C" linkage
396 dnl Define HAVE_CARGF etc if "cargf" is declared and links
398 dnl argument 1 is name of function to check
400 dnl ASSUMES argument is a math function with TWO parameters
402 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
403 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
404 GLIBCPP_CHECK_MATH_DECL_2($1)
405 if test x$glibcpp_cv_func_$1_use = x"yes"; then
408 GLIBCPP_CHECK_MATH_DECL_2(_$1)
409 if test x$glibcpp_cv_func__$1_use = x"yes"; then
417 dnl Check to see if the (math function) argument passed is
418 dnl declared when using the c++ compiler
419 dnl ASSUMES argument is a math function with ONE parameter
421 dnl GLIBCPP_CHECK_MATH_DECL_3
422 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
423 AC_MSG_CHECKING([for $1 declaration])
424 if test x${glibcpp_cv_func_$1_use+set} != xset; then
425 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
428 AC_TRY_COMPILE([#include <math.h>],
430 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
434 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
438 dnl Check to see if the (math function) argument passed is
439 dnl 1) declared when using the c++ compiler
440 dnl 2) has "C" linkage
442 dnl Define HAVE_CARGF etc if "cargf" is declared and links
444 dnl argument 1 is name of function to check
446 dnl ASSUMES argument is a math function with THREE parameters
448 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
449 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
450 GLIBCPP_CHECK_MATH_DECL_3($1)
451 if test x$glibcpp_cv_func_$1_use = x"yes"; then
454 GLIBCPP_CHECK_MATH_DECL_3(_$1)
455 if test x$glibcpp_cv_func__$1_use = x"yes"; then
463 dnl Check to see if the (stdlib function) argument passed is
464 dnl 1) declared when using the c++ compiler
465 dnl 2) has "C" linkage
467 dnl argument 1 is name of function to check
469 dnl ASSUMES argument is a math function with TWO parameters
471 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
472 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
473 AC_MSG_CHECKING([for $1 declaration])
474 if test x${glibcpp_cv_func_$1_use+set} != xset; then
475 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
478 AC_TRY_COMPILE([#include <stdlib.h>],
480 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
484 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
485 if test x$glibcpp_cv_func_$1_use = x"yes"; then
492 dnl Because the builtins are picky picky picky about the arguments they take,
493 dnl do an explict linkage tests here.
494 dnl Check to see if the (math function) argument passed is
495 dnl 1) declared when using the c++ compiler
496 dnl 2) has "C" linkage
498 dnl Define HAVE_CARGF etc if "cargf" is declared and links
500 dnl argument 1 is name of function to check
502 dnl ASSUMES argument is a math function with ONE parameter
504 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
505 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
506 AC_MSG_CHECKING([for $1 declaration])
507 if test x${glibcpp_cv_func_$1_use+set} != xset; then
508 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
511 AC_TRY_COMPILE([#include <math.h>],
513 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
517 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
518 if test x$glibcpp_cv_func_$1_use = x"yes"; then
519 AC_MSG_CHECKING([for $1 linkage])
520 if test x${glibcpp_cv_func_$1_link+set} != xset; then
521 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
522 AC_TRY_LINK([#include <math.h>],
524 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
527 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
528 if test x$glibcpp_cv_func_$1_link = x"yes"; then
529 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
530 AC_DEFINE_UNQUOTED(${ac_tr_func})
537 dnl Check to see what builtin math functions are supported
539 dnl check for __builtin_abs
540 dnl check for __builtin_fabsf
541 dnl check for __builtin_fabs
542 dnl check for __builtin_fabl
543 dnl check for __builtin_labs
544 dnl check for __builtin_sqrtf
545 dnl check for __builtin_sqrtl
546 dnl check for __builtin_fsqrt
547 dnl check for __builtin_sinf
548 dnl check for __builtin_sin
549 dnl check for __builtin_sinl
550 dnl check for __builtin_cosf
551 dnl check for __builtin_cos
552 dnl check for __builtin_cosl
554 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
555 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
556 dnl Test for builtin math functions.
557 dnl These are made in gcc/c-common.c
558 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
559 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
560 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
561 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
562 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
564 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
565 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
566 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
568 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
569 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
570 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
572 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
573 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
574 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
576 dnl There is, without a doubt, a more elegant way to have these
577 dnl names exported so that they won't be stripped out of acconfig.h by
578 dnl autoheader. I leave this as an exercise to somebody less frustrated
579 dnl than I.... please email the libstdc++ list if you can figure out a
580 dnl more elegant approach (see autoconf/acgen.m4 and specifically
581 dnl AC_CHECK_FUNC for things to steal.)
583 if test x$dummyvar = x"yes"; then
584 AC_DEFINE(HAVE___BUILTIN_ABS)
585 AC_DEFINE(HAVE___BUILTIN_LABS)
586 AC_DEFINE(HAVE___BUILTIN_COS)
587 AC_DEFINE(HAVE___BUILTIN_COSF)
588 AC_DEFINE(HAVE___BUILTIN_COSL)
589 AC_DEFINE(HAVE___BUILTIN_FABS)
590 AC_DEFINE(HAVE___BUILTIN_FABSF)
591 AC_DEFINE(HAVE___BUILTIN_FABSL)
592 AC_DEFINE(HAVE___BUILTIN_SIN)
593 AC_DEFINE(HAVE___BUILTIN_SINF)
594 AC_DEFINE(HAVE___BUILTIN_SINL)
595 AC_DEFINE(HAVE___BUILTIN_FSQRT)
596 AC_DEFINE(HAVE___BUILTIN_SQRTF)
597 AC_DEFINE(HAVE___BUILTIN_SQRTL)
603 dnl Check to see what the underlying c library
604 dnl These checks need to do two things:
605 dnl 1) make sure the name is declared when using the c++ compiler
606 dnl 2) make sure the name has "C" linkage
607 dnl This might seem like overkill but experience has shown that it's not...
609 dnl Define HAVE_STRTOLD if "strtold" is declared and links
610 dnl Define HAVE_STRTOF if "strtof" is declared and links
611 dnl Define HAVE_DRAND48 if "drand48" is declared and links
613 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
614 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
615 ac_test_CXXFLAGS="${CXXFLAGS+set}"
616 ac_save_CXXFLAGS="$CXXFLAGS"
617 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
619 AC_CHECK_FUNCS(strtof)
620 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
621 AC_CHECK_FUNCS(drand48)
623 CXXFLAGS="$ac_save_CXXFLAGS"
628 dnl Check to see what the underlying c library or math library is like.
629 dnl These checks need to do two things:
630 dnl 1) make sure the name is declared when using the c++ compiler
631 dnl 2) make sure the name has "C" linkage
632 dnl This might seem like overkill but experience has shown that it's not...
634 dnl Define HAVE_CARGF etc if "cargf" is found.
636 dnl GLIBCPP_CHECK_MATH_SUPPORT
637 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
638 ac_test_CXXFLAGS="${CXXFLAGS+set}"
639 ac_save_CXXFLAGS="$CXXFLAGS"
640 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
643 AC_CHECK_LIB(m, sin, libm="-lm")
647 dnl Check to see if certain C math functions exist.
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
656 dnl Check to see if basic C math functions have float versions.
657 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
662 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
679 dnl Check to see if basic C math functions have long double versions.
680 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
685 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
705 dnl Some runtimes have these functions with a preceding underscore. Please
706 dnl keep this sync'd with the one above. And if you add any new symbol,
707 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
708 dnl Check to see if certain C math functions exist.
710 dnl Check to see if basic C math functions have float versions.
711 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
713 _acosf _asinf _atanf \
715 _coshf _sinhf _tanhf)
716 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
720 dnl Check to see if basic C math functions have long double versions.
721 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
723 _acosl _asinl _atanl \
725 _coshl _sinhl _tanhl)
726 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
731 CXXFLAGS="$ac_save_CXXFLAGS"
736 dnl Check to see if there is native support for complex
738 dnl Don't compile bits in math/* if native support exits.
740 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
742 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
743 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
744 dnl Check for complex versions of math functions of platform.
745 AC_CHECK_LIB(m, main)
746 AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf)
748 dnl Compile the long double complex functions only if the function
749 dnl provides the non-complex long double functions that are needed.
750 dnl Currently this includes copysignl and atan2l, which should be
751 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
752 USE_COMPLEX_LONG_DOUBLE=no
753 if test x$ac_cv_func_atan2l = x"yes" \
754 && test x$ac_cv_func_copysignl = x"yes"; then
755 USE_COMPLEX_LONG_DOUBLE=yes
756 AC_REPLACE_MATHFUNCS(hypotl signbitl)
759 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
763 dnl Check to see what architecture and operating system we are compiling
764 dnl for. Also, if architecture- or OS-specific flags are required for
765 dnl compilation, pick them up here.
767 dnl GLIBCPP_CHECK_TARGET
768 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
769 . [$]{glibcpp_basedir}/configure.target
770 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
771 AC_MSG_RESULT(OS config directory is $os_include_dir)
772 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
777 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
778 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
779 dnl must have been previously checked.)
781 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
782 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
784 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
785 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
787 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
788 dnl others even if wchar_t support is not on.
789 AC_MSG_CHECKING([for mbstate_t])
790 AC_TRY_COMPILE([#include <wchar.h>],
791 [mbstate_t teststate;],
792 have_mbstate_t=yes, have_mbstate_t=no)
793 AC_MSG_RESULT($have_mbstate_t)
794 if test x"$have_mbstate_t" = xyes; then
795 AC_DEFINE(HAVE_MBSTATE_T)
798 dnl Sanity check for existence of ISO C99 headers for extended encoding.
799 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
800 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
802 dnl Only continue checking if the ISO C99 headers exist and support is on.
803 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes \
804 && test x"$enable_c_mbchar" != xno; then
806 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
807 dnl numeric_limits can instantiate type_traits<wchar_t>
808 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
809 AC_TRY_COMPILE([#include <wchar.h>],
810 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
811 has_wchar_minmax=yes, has_wchar_minmax=no)
812 AC_MSG_RESULT($has_wchar_minmax)
814 dnl Test wchar.h for WEOF, which is what we use to determine whether
815 dnl to specialize for char_traits<wchar_t> or not.
816 AC_MSG_CHECKING([for WEOF])
819 #include <stddef.h>],
821 has_weof=yes, has_weof=no)
822 AC_MSG_RESULT($has_weof)
824 dnl Tests for wide character functions used in char_traits<wchar_t>.
825 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
826 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
828 AC_MSG_CHECKING([for ISO C99 wchar_t support])
829 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
830 && test x"$ac_wfuncs" = xyes; then
831 ac_isoC99_wchar_t=yes
835 AC_MSG_RESULT($ac_isoC99_wchar_t)
837 dnl Use iconv for wchar_t to char conversions. As such, check for
838 dnl X/Open Portability Guide, version 2 features (XPG2).
839 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
840 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
842 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
843 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
845 LIBS="$LIBS $libiconv"
847 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
848 ac_XPG2funcs=yes, ac_XPG2funcs=no)
852 AC_MSG_CHECKING([for XPG2 wchar_t support])
853 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
854 && test x"$ac_XPG2funcs" = xyes; then
859 AC_MSG_RESULT($ac_XPG2_wchar_t)
861 dnl At the moment, only enable wchar_t specializations if all the
862 dnl above support is present.
863 AC_MSG_CHECKING([for enabled wchar_t specializations])
864 if test x"$ac_isoC99_wchar_t" = xyes \
865 && test x"$ac_XPG2_wchar_t" = xyes; then
866 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
872 dnl Wide characters disabled by the user.
873 AC_MSG_WARN([wchar_t support disabled.])
879 dnl Check for special debugging mode; not for production use.
881 dnl GLIBCPP_ENABLE_DEBUG
882 dnl --enable-debug sets '-ggdb3 -O0'.
883 dnl --disable-debug sets '-g' and whatever optimization options the
884 dnl compiler can handle.
885 dnl + --enable-maintainer-mode automatically defaults this to on.
886 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
887 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
888 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
889 dnl defaults to `no'.
890 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
891 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
893 changequote(<<, >>)dnl
894 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
896 [case "${enableval}" in
897 yes) enable_debug=yes ;;
898 no) enable_debug=no ;;
899 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
901 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
903 dnl Option parsed, now set things appropriately
904 case "${enable_debug}" in
906 DEBUG_FLAGS='-O0 -ggdb3'
912 AC_SUBST(DEBUG_FLAGS)
917 dnl Check for "unusual" flags to pass to the compiler while building.
919 dnl GLIBCPP_ENABLE_CXX_FLAGS
920 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
921 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
922 dnl Somehow this same set of flags must be passed when [re]building
924 dnl --disable-cxx-flags passes nothing.
925 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
926 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
927 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
928 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
929 dnl If "default flags" is an empty string (or "none"), the effect is
930 dnl the same as --disable or --enable=no.
931 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
932 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
933 AC_ARG_ENABLE(cxx-flags,
934 changequote(<<, >>)dnl
935 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
936 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
938 [case "x$enableval" in
940 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
942 enable_cxx_flags='' ;;
944 enable_cxx_flags="$enableval" ;;
946 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
948 dnl Thinko on my part during design. This kludge is the workaround.
949 if test "$enable_cxx_flags" = "none"; then
953 dnl Run through flags (either default or command-line) and set anything
954 dnl extra (e.g., #defines) that must accompany particular g++ options.
955 if test -n "$enable_cxx_flags"; then
956 for f in $enable_cxx_flags; do
960 *) # and we're trying to pass /what/ exactly?
961 AC_MSG_ERROR([compiler flags start with a -]) ;;
965 EXTRA_CXX_FLAGS="$enable_cxx_flags"
966 AC_SUBST(EXTRA_CXX_FLAGS)
971 dnl Check for which locale library to use: gnu or generic.
973 dnl GLIBCPP_ENABLE_CLOCALE
974 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
975 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
977 dnl default is generic
979 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
980 AC_MSG_CHECKING([for clocale to use])
981 AC_ARG_ENABLE(clocale,
982 [ --enable-clocale enable model for target locale package.
983 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
985 if test x$enable_clocale = xno; then
986 enable_clocale=generic
988 enable_clocale=generic)
990 enable_clocale_flag=$enable_clocale
992 dnl Check if a valid locale package
993 case x${enable_clocale_flag} in
995 CLOCALE_H=config/c_locale_gnu.h
996 CLOCALE_CC=config/c_locale_gnu.cc
1000 CLOCALE_H=config/c_locale_generic.h
1001 CLOCALE_CC=config/c_locale_generic.cc
1002 AC_MSG_RESULT(generic)
1005 echo "$enable_clocale is an unknown locale package" 1>&2
1010 AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h)
1011 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1016 dnl Check for which I/O library to use: libio, or something specific.
1018 dnl GLIBCPP_ENABLE_CSTDIO
1019 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1021 dnl default is stdio
1023 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1024 AC_MSG_CHECKING([for cstdio to use])
1025 AC_ARG_ENABLE(cstdio,
1026 [ --enable-cstdio enable stdio for target io package.
1027 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1029 if test x$enable_cstdio = xno; then
1032 enable_cstdio=stdio)
1034 enable_cstdio_flag=$enable_cstdio
1036 dnl Check if a valid I/O package
1037 case x${enable_cstdio_flag} in
1039 CSTDIO_H=config/c_io_libio.h
1040 BASIC_FILE_H=config/basic_file_libio.h
1041 BASIC_FILE_CC=config/basic_file_libio.cc
1042 AC_MSG_RESULT(libio)
1044 # see if we are on a system with libio native (ie, linux)
1045 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1047 # Need to check and see what version of glibc is being used. If
1048 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1049 # compile most of libio for linux systems.
1050 if test x$has_libio = x"yes"; then
1053 AC_MSG_CHECKING([for glibc version >= 2.2])
1054 AC_EGREP_CPP([ok], [
1055 #include <features.h>
1056 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1059 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1060 AC_MSG_RESULT($glibc_satisfactory)
1064 # XXX at the moment, admit defeat and force the recompilation
1065 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1066 glibc_satisfactory=no
1068 if test x$glibc_satisfactory = x"yes"; then
1073 # bkoz XXX need to add checks to enable this
1074 # pme XXX here's a first pass at such a check
1075 if test x$enable_c_mbchar != xno; then
1083 # Using libio, but <libio.h> doesn't exist on the target system. . .
1085 # bkoz XXX need to add checks to enable this
1086 # pme XXX here's a first pass at such a check
1087 if test x$enable_c_mbchar != xno; then
1094 xstdio | x | xno | xnone | xyes)
1096 CSTDIO_H=config/c_io_stdio.h
1097 BASIC_FILE_H=config/basic_file_stdio.h
1098 BASIC_FILE_CC=config/basic_file_stdio.cc
1099 AC_MSG_RESULT(stdio)
1101 # We're not using stdio.
1106 echo "$enable_cstdio is an unknown io package" 1>&2
1110 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1111 AC_LINK_FILES($BASIC_FILE_H, include/bits/basic_file_model.h)
1112 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1114 # 2000-08-04 bkoz hack
1115 CCODECVT_C=config/c_io_libio_codecvt.c
1116 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1117 # 2000-08-04 bkoz hack
1119 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1120 test "$need_libio" = yes || test "$need_wlibio" = yes)
1121 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1122 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1123 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1124 libio_la=../libio/libio.la
1133 dnl Check for which threading library to use.
1135 dnl GLIBCPP_ENABLE_THREADS
1136 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1138 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1139 dnl libio. Any actual thread package will enable it.
1141 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1142 AC_MSG_CHECKING([for thread model used by GCC])
1143 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1144 AC_MSG_RESULT([$target_thread_file])
1146 dnl Check for thread package actually supported in libstdc++
1148 case "$target_thread_file" in
1150 THREADH=threads-no.h
1153 THREADH=threads-posix.h
1155 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1156 AC_MSG_WARN(disabling unsupported thread package $target_thread_file)
1157 THREADH=threads-no.h
1160 AC_MSG_ERROR($target_thread_file: unsupported/unknown thread package)
1164 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1165 if test $THREADH != threads-no.h; then
1166 AC_DEFINE(_GLIBCPP_USE_THREADS)
1172 dnl Check for exception handling support. If an explicit enable/disable
1173 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1174 dnl target may or may not support call frame exceptions.
1176 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1177 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1178 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1180 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1182 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1183 AC_MSG_CHECKING([for exception model to use])
1186 AC_ARG_ENABLE(sjlj-exceptions,
1187 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1189 [dnl Botheration. Now we've got to detect the exception model.
1190 dnl Link tests against libgcc.a are problematic since -- at least
1191 dnl as of this writing -- we've not been given proper -L bits for
1192 dnl single-tree newlib and libgloss.
1194 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1195 dnl conftest files before we got a change to grep them first.
1196 cat > conftest.$ac_ext << EOF
1197 [#]line __oline__ "configure"
1206 old_CXXFLAGS="$CXXFLAGS"
1208 if AC_TRY_EVAL(ac_compile); then
1209 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1210 enable_sjlj_exceptions=yes
1211 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1212 enable_sjlj_exceptions=no
1215 CXXFLAGS="$old_CXXFLAGS"
1217 if test x$enable_sjlj_exceptions = xyes; then
1218 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1219 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1220 ac_exception_model_name=sjlj
1221 elif test x$enable_sjlj_exceptions = xno; then
1222 ac_exception_model_name="call frame"
1224 AC_MSG_ERROR([unable to detect exception model])
1227 AC_MSG_RESULT($ac_exception_model_name)
1232 dnl Check for ISO/IEC 9899:1999 "C99" support.
1234 dnl GLIBCPP_ENABLE_C99
1235 dnl --enable-c99 defines _GLIBCPP_USE_C99
1236 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1237 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1238 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1239 dnl defaults to `no'.
1240 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1242 dnl GLIBCPP_ENABLE_C99
1243 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1244 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1247 changequote(<<, >>)dnl
1248 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1249 changequote([, ])dnl
1250 [case "$enableval" in
1251 yes) enable_c99=yes ;;
1252 no) enable_c99=no ;;
1253 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1255 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1260 # Check for the existence of <math.h> functions used if C99 is enabled.
1262 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1263 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1264 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1265 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1266 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1267 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1268 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1269 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1270 AC_TRY_COMPILE([#include <math.h>],
1271 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1272 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1273 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1274 AC_TRY_COMPILE([#include <math.h>],
1275 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1276 AC_TRY_COMPILE([#include <math.h>],
1277 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1278 AC_MSG_RESULT($ac_c99_math)
1280 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1282 AC_MSG_CHECKING([for lldiv_t declaration])
1283 AC_CACHE_VAL(ac_c99_lldiv_t, [
1284 AC_TRY_COMPILE([#include <stdlib.h>],
1286 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1288 AC_MSG_RESULT($ac_c99_lldiv_t)
1290 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1291 AC_TRY_COMPILE([#include <stdlib.h>],
1292 [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1293 AC_TRY_COMPILE([#include <stdlib.h>],
1294 [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1295 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1296 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1297 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1298 if test x"$ac_c99_lldiv_t" = x"no"; then
1301 AC_MSG_RESULT($ac_c99_stdlib)
1303 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1305 AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
1306 AC_TRY_COMPILE([#include <wchar.h>],
1307 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1308 AC_TRY_COMPILE([#include <wchar.h>],
1309 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1310 AC_TRY_COMPILE([#include <wchar.h>],
1311 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1312 AC_MSG_RESULT($ac_c99_wchar)
1314 AC_MSG_CHECKING([for enabled ISO C99 support])
1315 if test x"$ac_c99_math" = x"no" || test x"$ac_c99_wchar" = x"no" \
1316 || test x"$ac_c99_stdlib" = x"no"; then
1319 AC_MSG_RESULT($enable_c99)
1321 # Option parsed, now set things appropriately
1322 if test x"$enable_c99" = x"yes"; then
1323 AC_DEFINE(_GLIBCPP_USE_C99)
1331 dnl Check for template specializations for the 'long long' type extension.
1332 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1334 dnl GLIBCPP_ENABLE_LONG_LONG
1335 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1336 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1337 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1338 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1339 dnl defaults to `no'.
1340 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1342 dnl GLIBCPP_ENABLE_LONG_LONG
1343 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1344 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1346 AC_ARG_ENABLE(long-long,
1347 changequote(<<, >>)dnl
1348 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1349 changequote([, ])dnl
1350 [case "$enableval" in
1351 yes) enable_long_long=yes ;;
1352 no) enable_long_long=no ;;
1353 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1355 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1357 # iostreams require strtoll, strtoull to compile. If the
1358 # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1359 # go ahead and allow long long to be used.
1360 if test x"$enable_c99" = x"no"; then
1361 enable_long_long=no;
1364 # Option parsed, now set things appropriately
1365 AC_MSG_CHECKING([for enabled long long support])
1366 if test x"$enable_long_long" = xyes; then
1367 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1369 AC_MSG_RESULT($enable_long_long)
1374 dnl Check for what kind of C headers to use.
1376 dnl GLIBCPP_ENABLE_CHEADERS
1377 dnl --enable-cheaders= [does stuff].
1378 dnl --disable-cheaders [does not do anything, really].
1379 dnl + This will eventually need to be 'c_shadow' by default.
1380 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1381 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1382 dnl If ommitted, it defaults to `c_std'.
1383 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1384 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1385 AC_MSG_CHECKING([for c header strategy to use])
1386 AC_ARG_ENABLE(cheaders,
1387 changequote(<<, >>)dnl
1388 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1390 [case "$enableval" in
1395 enable_cheaders=c_std
1398 enable_cheaders=c_shadow
1400 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1403 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1404 AC_MSG_RESULT($enable_cheaders)
1406 dnl Option parsed, now set things appropriately
1407 case "$enable_cheaders" in
1409 CSHADOW_FLAGS="-fno-builtin"
1410 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1411 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1415 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1419 C_INCLUDE_DIR='${top_srcdir}/include/c'
1423 AC_SUBST(CSHADOW_FLAGS)
1424 AC_SUBST(C_INCLUDE_DIR)
1425 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1430 dnl Check for wide character support. Has the same effect as the option
1431 dnl in gcc's configure, but in a form that autoconf can mess with.
1433 dnl GLIBCPP_ENABLE_C_MBCHAR
1434 dnl --enable-c-mbchar requests all the wchar_t stuff.
1435 dnl --disable-c-mbchar doesn't.
1436 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1437 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1438 dnl defaults to `no'.
1439 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1440 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1441 AC_ARG_ENABLE(c-mbchar,
1442 changequote(<<, >>)dnl
1443 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1444 changequote([, ])dnl
1445 [case "$enableval" in
1446 yes) enable_c_mbchar=yes ;;
1447 no) enable_c_mbchar=no ;;
1448 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1450 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1451 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1456 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1458 dnl GLIBCPP_INCLUDE_DIR
1460 dnl TOPLEVEL_INCLUDES
1461 dnl LIBMATH_INCLUDES
1462 dnl LIBSUPCXX_INCLUDES
1464 dnl CSHADOW_INCLUDES
1466 dnl GLIBCPP_EXPORT_INCLUDE
1467 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1468 # Root level of the include sources.
1469 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1471 # Can either use include/c or include/c_std to grab "C" headers. This
1472 # variable is set to the include directory currently in use.
1473 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1475 # Passed down for canadian crosses.
1476 if test x"$CANADIAN" = xyes; then
1477 TOPLEVEL_INCLUDES='-I$(includedir)'
1480 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1482 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1484 #if GLIBCPP_NEED_LIBIO
1485 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1487 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1490 #if GLIBCPP_USE_CSHADOW
1491 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1492 # -I$(top_blddir)/cshadow'
1494 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1497 # Now, export this to all the little Makefiles....
1498 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1499 AC_SUBST(TOPLEVEL_INCLUDES)
1500 AC_SUBST(LIBMATH_INCLUDES)
1501 AC_SUBST(LIBSUPCXX_INCLUDES)
1502 AC_SUBST(LIBIO_INCLUDES)
1503 AC_SUBST(CSTD_INCLUDES)
1508 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1510 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1511 # Optimization flags that are probably a good idea for thrill-seekers. Just
1512 # uncomment the lines below and make, everything else is ready to go...
1513 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1515 AC_SUBST(OPTIMIZE_CXXFLAGS)
1517 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1518 AC_SUBST(WARN_FLAGS)
1522 dnl GLIBCPP_EXPORT_INSTALL_INFO
1523 dnl calculates gxx_install_dir
1524 dnl exports glibcpp_toolexecdir
1525 dnl exports glibcpp_toolexeclibdir
1526 dnl exports glibcpp_builddir
1527 dnl exports glibcpp_srcdir
1528 dnl exports glibcpp_prefixdir
1530 dnl Assumes cross_compiling bits already done, and with_cross_host in
1533 dnl GLIBCPP_EXPORT_INSTALL_INFO
1534 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1536 glibcpp_toolexecdir=no
1537 glibcpp_toolexeclibdir=no
1539 # Export build and source directories.
1540 # These need to be absolute paths, yet at the same time need to
1541 # canonicalize only relative paths, because then amd will not unmount
1542 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
1543 glibcpp_builddir=`pwd`
1545 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
1546 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
1548 glibcpp_prefixdir=${prefix}
1550 AC_MSG_CHECKING([for interface version number])
1551 libstdcxx_interface=$INTERFACE
1552 AC_MSG_RESULT($libstdcxx_interface)
1554 # Process the option --with-gxx-include-dir=<path to include-files directory>
1555 AC_MSG_CHECKING([for --with-gxx-include-dir])
1556 AC_ARG_WITH(gxx-include-dir,
1557 [ --with-gxx-include-dir the installation directory for include files],
1558 [case "${withval}" in
1560 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1567 gxx_include_dir=${withval}
1569 esac], [gxx_include_dir=no])
1570 AC_MSG_RESULT($gxx_include_dir)
1572 # Process the option "--enable-version-specific-runtime-libs"
1573 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1574 AC_ARG_ENABLE(version-specific-runtime-libs,
1575 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1576 [ version_specific_libs=yes
1577 # Need the gcc compiler version to know where to install libraries
1578 # and header files if --enable-version-specific-runtime-libs option
1581 gcc_version_trigger=${srcdir}/../gcc/version.c
1582 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1583 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1584 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1585 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1586 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}
1588 ],version_specific_libs=no)
1589 AC_MSG_RESULT($version_specific_libs)
1591 # Default case for install directory for include files.
1592 if test x"$version_specific_libs" = x"no" \
1593 && test x"$gxx_include_dir" = x"no"; then
1594 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1597 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1598 # Install a library built with a cross compiler in tooldir, not libdir.
1599 if test x"$glibcpp_toolexecdir" = x"no"; then
1600 if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
1601 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1602 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1604 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1605 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1609 AC_MSG_CHECKING([for install location])
1610 AC_MSG_RESULT($gxx_include_dir)
1612 AC_SUBST(glibcpp_builddir)
1613 AC_SUBST(glibcpp_srcdir)
1614 AC_SUBST(glibcpp_prefixdir)
1615 AC_SUBST(gxx_include_dir)
1616 AC_SUBST(glibcpp_toolexecdir)
1617 AC_SUBST(glibcpp_toolexeclibdir)
1621 # Check whether LC_MESSAGES is available in <locale.h>.
1622 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1624 # This file file be copied and used freely without restrictions. It can
1625 # be used in projects which are not available under the GNU Public License
1626 # but which still want to provide support for the GNU gettext functionality.
1627 # Please note that the actual code is *not* freely available.
1631 AC_DEFUN(AC_LC_MESSAGES, [
1632 AC_CHECK_HEADER(locale.h, [
1633 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1634 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1635 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1636 if test $ac_cv_val_LC_MESSAGES = yes; then
1637 AC_DEFINE(HAVE_LC_MESSAGES)
1643 # Check for functions in math library.
1644 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1646 # This file can be copied and used freely without restrictions. It can
1647 # be used in projects which are not available under the GNU Public License
1648 # but which still want to provide support for the GNU gettext functionality.
1649 # Please note that the actual code is *not* freely available.
1653 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1654 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1655 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1656 AC_SUBST(LIBMATHOBJS)dnl
1660 # Check for string functions.
1661 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1663 # This file can be copied and used freely without restrictions. It can
1664 # be used in projects which are not available under the GNU Public License
1665 # but which still want to provide support for the GNU gettext functionality.
1666 # Please note that the actual code is *not* freely available.
1670 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1671 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1672 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1673 AC_SUBST(LIBSTRINGOBJS)dnl
1677 dnl This macro searches for a GNU version of make. If a match is found, the
1678 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1679 dnl set to "#". This is useful for including a special features in a Makefile,
1680 dnl which cannot be handled by other versions of make. The variable
1681 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1682 dnl the empty string otherwise.
1684 dnl Here is an example of its use:
1686 dnl Makefile.in might contain:
1688 dnl # A failsafe way of putting a dependency rule into a makefile
1690 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1692 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1693 dnl @ifGNUmake@ include $(DEPEND)
1694 dnl @ifGNUmake@ endif
1696 dnl Then configure.in would normally contain:
1698 dnl CHECK_GNU_MAKE()
1699 dnl AC_OUTPUT(Makefile)
1701 dnl Then perhaps to cause gnu make to override any other make, we could do
1702 dnl something like this (note that GNU make always looks for GNUmakefile first):
1704 dnl if ! test x$_cv_gnu_make_command = x ; then
1705 dnl mv Makefile GNUmakefile
1706 dnl echo .DEFAULT: > Makefile ;
1707 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1710 dnl Then, if any (well almost any) other make is called, and GNU make also
1711 dnl exists, then the other make wraps the GNU make.
1713 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1714 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1716 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1717 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1718 dnl #### conditional's subshell (" --version" is not a command), using a
1719 dnl #### different option to grep(1).
1721 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1722 dnl #### ${MAKE:-make}).
1725 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1726 _cv_gnu_make_command='' ;
1727 dnl Search all the common names for GNU make
1728 for a in "${MAKE-make}" make gmake gnumake ; do
1729 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1731 _cv_gnu_make_command=$a ;
1736 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1737 dnl string, '#' otherwise
1738 if test "x$_cv_gnu_make_command" != "x" ; then
1746 sinclude(../libtool.m4)
1747 dnl The lines below arrange for aclocal not to bring an installed
1748 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1749 dnl add a definition of LIBTOOL to Makefile.in.
1750 ifelse(,,,[AC_SUBST(LIBTOOL)
1751 AC_DEFUN([AM_PROG_LIBTOOL])
1752 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1753 AC_DEFUN([AC_PROG_LD])
1758 # Do all the work for Automake. This macro actually does too much --
1759 # some checks are only needed if your package does certain things.
1760 # But this isn't really a big deal.
1765 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1767 AC_DEFUN(AM_INIT_AUTOMAKE,
1768 [AC_REQUIRE([AC_PROG_INSTALL])
1773 dnl test to see if srcdir already configured
1774 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1775 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1778 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1779 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1780 AC_REQUIRE([AM_SANITY_CHECK])
1781 AC_REQUIRE([AC_ARG_PROGRAM])
1782 dnl FIXME This is truly gross.
1783 missing_dir=`cd $ac_aux_dir && pwd`
1784 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1785 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1786 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1787 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1788 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1789 AC_REQUIRE([AC_PROG_MAKE_SET])])
1792 # Check to make sure that the build environment is sane.
1795 AC_DEFUN(AM_SANITY_CHECK,
1796 [AC_MSG_CHECKING([whether build environment is sane])
1799 echo timestamp > conftestfile
1800 # Do `set' in a subshell so we don't clobber the current shell's
1801 # arguments. Must try -L first in case configure is actually a
1802 # symlink; some systems play weird games with the mod time of symlinks
1803 # (eg FreeBSD returns the mod time of the symlink's containing
1806 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1807 if test "[$]*" = "X"; then
1809 set X `ls -t $srcdir/configure conftestfile`
1811 if test "[$]*" != "X $srcdir/configure conftestfile" \
1812 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1814 # If neither matched, then we have a broken ls. This can happen
1815 # if, for instance, CONFIG_SHELL is bash and it inherits a
1816 # broken ls alias from the environment. This has actually
1817 # happened. Such a system could not be considered "sane".
1818 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1819 alias in your environment])
1822 test "[$]2" = conftestfile
1828 AC_MSG_ERROR([newly created file is older than distributed files!
1829 Check your system clock])
1832 AC_MSG_RESULT(yes)])
1834 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1835 dnl The program must properly implement --version.
1836 AC_DEFUN(AM_MISSING_PROG,
1837 [AC_MSG_CHECKING(for working $2)
1838 # Run test in a subshell; some versions of sh will print an error if
1839 # an executable is not found, even if stderr is redirected.
1840 # Redirect stdin to placate older versions of autoconf. Sigh.
1841 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1843 AC_MSG_RESULT(found)
1846 AC_MSG_RESULT(missing)
1850 # Add --enable-maintainer-mode option to configure.
1855 AC_DEFUN(AM_MAINTAINER_MODE,
1856 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1857 dnl maintainer-mode is disabled by default
1858 AC_ARG_ENABLE(maintainer-mode,
1859 [ --enable-maintainer-mode enable make rules and dependencies not useful
1860 (and sometimes confusing) to the casual installer],
1861 USE_MAINTAINER_MODE=$enableval,
1862 USE_MAINTAINER_MODE=no)
1863 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1864 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1865 MAINT=$MAINTAINER_MODE_TRUE
1870 # Define a conditional.
1872 AC_DEFUN(AM_CONDITIONAL,
1883 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1885 AC_DEFUN(AM_CONFIG_HEADER,
1887 AC_CONFIG_HEADER([$1])
1888 dnl When config.status generates a header, we must update the stamp-h file.
1889 dnl This file resides in the same directory as the config header
1890 dnl that is generated. We must strip everything past the first ":",
1891 dnl and everything past the last "/".
1892 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1893 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1894 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1896 for am_file in <<$1>>; do
1897 case " <<$>>CONFIG_HEADERS " in
1898 *" <<$>>am_file "*<<)>>
1899 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1902 am_indx=`expr "<<$>>am_indx" + 1`