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++, 2.91)
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 CXX_libstdcxx 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(CXX_libstdcxx, $CCC c++ g++ gcc CC cxx cc++, gcc)
101 test -z "$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, :)
137 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
138 # at least currently, we never actually build a program, so we never
139 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
140 # fails, because we are probably configuring with a cross compiler
141 # which cant create executables. So we include AC_EXEEXT to keep
142 # automake happy, but we dont execute it, since we dont care about
148 . [$]{glibcpp_basedir}/configure.host
150 case [$]{glibcpp_basedir} in
151 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
152 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
155 # This does for the target what configure.host does for the host. In
156 # addition to possibly modifying the same flags, it also sets up symlinks.
162 dnl Check to see if g++ can compile this library, and if so, if any version-
163 dnl specific precautions need to be taken.
165 dnl GLIBCPP_CHECK_COMPILER_VERSION
166 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
167 if test ! -f stamp-sanity-compiler; then
168 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
175 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
177 AC_MSG_RESULT($gpp_satisfactory)
178 touch stamp-sanity-compiler
184 dnl Test for newer compiler features, or features that are present in newer
185 dnl compiler version but not older compiler versions should be placed
188 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
189 dnl new inlining code or the new system_header pragma will die on -Werror.
190 dnl Leave it out by default and use maint-mode to use it.
192 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
193 dnl compiler supports it.
194 dnl GLIBCPP_CHECK_COMPILER_FEATURES
195 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
196 # All these tests are for C++; save the language and the compiler flags.
197 # The CXXFLAGS thing is suspicious, but based on similar bits
198 # found in GLIBCPP_CONFIGURE.
201 ac_test_CXXFLAGS="${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 Define HAVE_STRTOLD if "strtold" is declared and links
468 dnl Define HAVE_STRTOF if "strtof" is declared and links
470 dnl argument 1 is name of function to check
472 dnl ASSUMES argument is a math function with TWO parameters
474 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
475 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
476 AC_MSG_CHECKING([for $1 declaration])
477 if test x${glibcpp_cv_func_$1_use+set} != xset; then
478 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
481 AC_TRY_COMPILE([#include <stdlib.h>],
483 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
487 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
488 if test x$glibcpp_cv_func_$1_use = x"yes"; then
495 dnl Because the builtins are picky picky picky about the arguments they take,
496 dnl do an explict linkage tests here.
497 dnl Check to see if the (math function) argument passed is
498 dnl 1) declared when using the c++ compiler
499 dnl 2) has "C" linkage
501 dnl Define HAVE_CARGF etc if "cargf" is declared and links
503 dnl argument 1 is name of function to check
505 dnl ASSUMES argument is a math function with ONE parameter
507 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
508 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
509 AC_MSG_CHECKING([for $1 declaration])
510 if test x${glibcpp_cv_func_$1_use+set} != xset; then
511 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
514 AC_TRY_COMPILE([#include <math.h>],
516 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
520 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
521 if test x$glibcpp_cv_func_$1_use = x"yes"; then
522 AC_MSG_CHECKING([for $1 linkage])
523 if test x${glibcpp_cv_func_$1_link+set} != xset; then
524 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
525 AC_TRY_LINK([#include <math.h>],
527 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
530 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
531 if test x$glibcpp_cv_func_$1_link = x"yes"; then
532 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
533 AC_DEFINE_UNQUOTED(${ac_tr_func})
540 dnl Check to see what builtin math functions are supported
542 dnl check for __builtin_abs
543 dnl check for __builtin_fabsf
544 dnl check for __builtin_fabs
545 dnl check for __builtin_fabl
546 dnl check for __builtin_labs
547 dnl check for __builtin_sqrtf
548 dnl check for __builtin_sqrtl
549 dnl check for __builtin_fsqrt
550 dnl check for __builtin_sinf
551 dnl check for __builtin_sin
552 dnl check for __builtin_sinl
553 dnl check for __builtin_cosf
554 dnl check for __builtin_cos
555 dnl check for __builtin_cosl
557 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
558 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
559 dnl Test for builtin math functions.
560 dnl These are made in gcc/c-common.c
561 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
562 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
563 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
564 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
565 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
567 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
568 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
569 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
571 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
572 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
573 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
575 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
576 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
577 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
579 dnl There is, without a doubt, a more elegant way to have these
580 dnl names exported so that they won't be stripped out of acconfig.h by
581 dnl autoheader. I leave this as an exercise to somebody less frustrated
582 dnl than I.... please email the libstdc++ list if you can figure out a
583 dnl more elegant approach (see autoconf/acgen.m4 and specifically
584 dnl AC_CHECK_FUNC for things to steal.)
586 if test x$dummyvar = x"yes"; then
587 AC_DEFINE(HAVE___BUILTIN_ABS)
588 AC_DEFINE(HAVE___BUILTIN_LABS)
589 AC_DEFINE(HAVE___BUILTIN_COS)
590 AC_DEFINE(HAVE___BUILTIN_COSF)
591 AC_DEFINE(HAVE___BUILTIN_COSL)
592 AC_DEFINE(HAVE___BUILTIN_FABS)
593 AC_DEFINE(HAVE___BUILTIN_FABSF)
594 AC_DEFINE(HAVE___BUILTIN_FABSL)
595 AC_DEFINE(HAVE___BUILTIN_SIN)
596 AC_DEFINE(HAVE___BUILTIN_SINF)
597 AC_DEFINE(HAVE___BUILTIN_SINL)
598 AC_DEFINE(HAVE___BUILTIN_FSQRT)
599 AC_DEFINE(HAVE___BUILTIN_SQRTF)
600 AC_DEFINE(HAVE___BUILTIN_SQRTL)
606 dnl Check to see what the underlying c library
607 dnl These checks need to do two things:
608 dnl 1) make sure the name is declared when using the c++ compiler
609 dnl 2) make sure the name has "C" linkage
610 dnl This might seem like overkill but experience has shown that it's not...
612 dnl Define HAVE_STRTOF etc if "strtof" is found.
613 dnl Define HAVE_STRTOLD etc if "strtold" is found.
615 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
616 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
617 ac_test_CXXFLAGS="${CXXFLAGS+set}"
618 ac_save_CXXFLAGS="$CXXFLAGS"
619 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
621 AC_CHECK_FUNCS(strtof)
622 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
624 CXXFLAGS="$ac_save_CXXFLAGS"
629 dnl Check to see what the underlying c library or math library is like.
630 dnl These checks need to do two things:
631 dnl 1) make sure the name is declared when using the c++ compiler
632 dnl 2) make sure the name has "C" linkage
633 dnl This might seem like overkill but experience has shown that it's not...
635 dnl Define HAVE_CARGF etc if "cargf" is found.
637 dnl GLIBCPP_CHECK_MATH_SUPPORT
638 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
639 ac_test_CXXFLAGS="${CXXFLAGS+set}"
640 ac_save_CXXFLAGS="$CXXFLAGS"
641 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
644 AC_CHECK_LIB(m, sin, libm="-lm")
648 dnl Check to see if certain C math functions exist.
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
657 dnl Check to see if basic C math functions have float versions.
658 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
663 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
680 dnl Check to see if basic C math functions have long double versions.
681 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
686 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
706 dnl Some runtimes have these functions with a preceding underscore. Please
707 dnl keep this sync'd with the one above. And if you add any new symbol,
708 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
709 dnl Check to see if certain C math functions exist.
711 dnl Check to see if basic C math functions have float versions.
712 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
714 _acosf _asinf _atanf \
716 _coshf _sinhf _tanhf)
717 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
721 dnl Check to see if basic C math functions have long double versions.
722 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
724 _acosl _asinl _atanl \
726 _coshl _sinhl _tanhl)
727 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
732 CXXFLAGS="$ac_save_CXXFLAGS"
737 dnl Check to see if there is native support for complex
739 dnl Don't compile bits in math/* if native support exits.
741 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
743 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
744 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
745 dnl Check for complex versions of math functions of platform.
746 AC_CHECK_LIB(m, main)
747 AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf)
749 dnl Compile the long double complex functions only if the function
750 dnl provides the non-complex long double functions that are needed.
751 dnl Currently this includes copysignl and atan2l, which should be
752 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
753 USE_COMPLEX_LONG_DOUBLE=no
754 if test x$ac_cv_func_atan2l = x"yes" \
755 && test x$ac_cv_func_copysignl = x"yes"; then
756 USE_COMPLEX_LONG_DOUBLE=yes
757 AC_REPLACE_MATHFUNCS(hypotl signbitl)
760 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
764 dnl Check to see what architecture and operating system we are compiling
765 dnl for. Also, if architecture- or OS-specific flags are required for
766 dnl compilation, pick them up here.
768 dnl GLIBCPP_CHECK_TARGET
769 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
770 . [$]{glibcpp_basedir}/configure.target
771 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
772 AC_MSG_RESULT(OS config directory is $os_include_dir)
773 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
778 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
779 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
780 dnl must have been previously checked.)
782 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
783 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
785 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
786 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
788 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
789 dnl others even if wchar_t support is not on.
790 AC_MSG_CHECKING([for mbstate_t])
791 AC_TRY_COMPILE([#include <wchar.h>],
792 [mbstate_t teststate;],
793 have_mbstate_t=yes, have_mbstate_t=no)
794 AC_MSG_RESULT($have_mbstate_t)
795 if test x"$have_mbstate_t" = xyes; then
796 AC_DEFINE(HAVE_MBSTATE_T)
799 dnl Sanity check for existence of ISO C99 headers for extended encoding.
800 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
801 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
803 dnl Only continue checking if the ISO C99 headers exist and support is on.
804 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes \
805 && test x"$enable_c_mbchar" != xno; then
807 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
808 dnl numeric_limits can instantiate type_traits<wchar_t>
809 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
810 AC_TRY_COMPILE([#include <wchar.h>],
811 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
812 has_wchar_minmax=yes, has_wchar_minmax=no)
813 AC_MSG_RESULT($has_wchar_minmax)
815 dnl Test wchar.h for WEOF, which is what we use to determine whether
816 dnl to specialize for char_traits<wchar_t> or not.
817 AC_MSG_CHECKING([for WEOF])
820 #include <stddef.h>],
822 has_weof=yes, has_weof=no)
823 AC_MSG_RESULT($has_weof)
825 dnl Tests for wide character functions used in char_traits<wchar_t>.
826 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
827 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
829 AC_MSG_CHECKING([for ISO C99 wchar_t support])
830 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
831 && test x"$ac_wfuncs" = xyes; then
832 ac_isoC99_wchar_t=yes
836 AC_MSG_RESULT($ac_isoC99_wchar_t)
838 dnl Use iconv for wchar_t to char conversions. As such, check for
839 dnl X/Open Portability Guide, version 2 features (XPG2).
840 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
841 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
843 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
844 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
846 LIBS="$LIBS $libiconv"
848 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
849 ac_XPG2funcs=yes, ac_XPG2funcs=no)
853 AC_MSG_CHECKING([for XPG2 wchar_t support])
854 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
855 && test x"$ac_XPG2funcs" = xyes; then
860 AC_MSG_RESULT($ac_XPG2_wchar_t)
862 dnl At the moment, only enable wchar_t specializations if all the
863 dnl above support is present.
864 AC_MSG_CHECKING([for enabled wchar_t specializations])
865 if test x"$ac_isoC99_wchar_t" = xyes \
866 && test x"$ac_XPG2_wchar_t" = xyes; then
867 libinst_wstring_la="libinst-wstring.la"
868 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
871 libinst_wstring_la=""
874 AC_SUBST(libinst_wstring_la)
877 dnl Wide characters disabled by the user.
878 AC_MSG_WARN([wchar_t support disabled.])
884 dnl Check to see if this version of GNU C++ is afflicted by bugs in
885 dnl __complex__ float support.
887 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
889 dnl Check to see if this version of GNU C++ is afflicted by bugs in
890 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
891 dnl gcc-2.95.x when using the library, unless we define the default copy
892 dnl ctor in the specializations of complex<>.
894 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
895 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
896 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
897 AC_REQUIRE([AC_PROG_CXX])
899 AC_MSG_CHECKING([for GNU C++ __complex__ support])
900 AC_CACHE_VAL(glibcpp_cv_complex, [
903 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
904 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
905 [ dcomplex x; f(x); ],
906 glibcpp_cv_complex=ok,
907 glibcpp_cv_complex=buggy
911 AC_MSG_RESULT($glibcpp_cv_complex)
912 if test $glibcpp_cv_complex = buggy; then
913 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
916 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
917 AC_CACHE_VAL(glibcpp_cv_float_complex, [
921 cat > conftest.h <<EOB
923 // Check for buggy __complex__ that causes ICE in most versions of egcs
924 // and gcc-2.95.x on certain platforms (eg., x86-win32).
926 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
927 // more info on the bug itself.
932 __complex__ float m_value;
933 float_complex (float = 0.0f, float = 0.0f);
934 float_complex (__complex__ float val) : m_value (val) {}
935 float_complex foo (const float_complex &val)
936 { return float_complex (~val.m_value); }
939 AC_TRY_COMPILE([#include "conftest.h"], ,
940 glibcpp_cv_float_complex=ok,
941 glibcpp_cv_float_complex=buggy
945 AC_MSG_RESULT($glibcpp_cv_float_complex)
946 if test $glibcpp_cv_float_complex = buggy; then
947 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
953 dnl Check for special debugging mode; not for production use.
955 dnl GLIBCPP_ENABLE_DEBUG
956 dnl --enable-debug sets '-ggdb3 -O0'.
957 dnl --disable-debug sets '-g' and whatever optimization options the
958 dnl compiler can handle.
959 dnl + --enable-maintainer-mode automatically defaults this to on.
960 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
961 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
962 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
963 dnl defaults to `no'.
964 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
965 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
967 changequote(<<, >>)dnl
968 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
970 [case "${enableval}" in
971 yes) enable_debug=yes ;;
972 no) enable_debug=no ;;
973 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
975 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
977 dnl Option parsed, now set things appropriately
978 case "${enable_debug}" in
980 DEBUG_FLAGS='-O0 -ggdb3'
986 AC_SUBST(DEBUG_FLAGS)
991 dnl Check for "unusual" flags to pass to the compiler while building.
993 dnl GLIBCPP_ENABLE_CXX_FLAGS
994 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
995 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
996 dnl Somehow this same set of flags must be passed when [re]building
998 dnl --disable-cxx-flags passes nothing.
999 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1000 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1001 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1002 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1003 dnl If "default flags" is an empty string (or "none"), the effect is
1004 dnl the same as --disable or --enable=no.
1005 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1006 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1007 AC_ARG_ENABLE(cxx-flags,
1008 changequote(<<, >>)dnl
1009 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1010 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1011 changequote([, ])dnl
1012 [case "x$enableval" in
1014 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1016 enable_cxx_flags='' ;;
1018 enable_cxx_flags="$enableval" ;;
1020 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1022 dnl Thinko on my part during design. This kludge is the workaround.
1023 if test "$enable_cxx_flags" = "none"; then
1024 enable_cxx_flags='';
1027 dnl Run through flags (either default or command-line) and set anything
1028 dnl extra (e.g., #defines) that must accompany particular g++ options.
1029 if test -n "$enable_cxx_flags"; then
1030 for f in $enable_cxx_flags; do
1034 *) # and we're trying to pass /what/ exactly?
1035 AC_MSG_ERROR([compiler flags start with a -]) ;;
1039 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1040 AC_SUBST(EXTRA_CXX_FLAGS)
1045 dnl Check for which locale library to use: gnu or generic.
1047 dnl GLIBCPP_ENABLE_CLOCALE
1048 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
1049 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
1051 dnl default is generic
1053 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1054 AC_MSG_CHECKING([for clocale to use])
1055 AC_ARG_ENABLE(clocale,
1056 [ --enable-clocale enable model for target locale package.
1057 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1059 if test x$enable_clocale = xno; then
1060 enable_clocale=generic
1062 enable_clocale=generic)
1064 enable_clocale_flag=$enable_clocale
1066 dnl Check if a valid locale package
1067 case x${enable_clocale_flag} in
1069 CLOCALE_H=config/c_locale_gnu.h
1070 CLOCALE_CC=config/c_locale_gnu.cc
1074 CLOCALE_H=config/c_locale_generic.h
1075 CLOCALE_CC=config/c_locale_generic.cc
1076 AC_MSG_RESULT(generic)
1079 echo "$enable_clocale is an unknown locale package" 1>&2
1084 AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h)
1085 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1090 dnl Check for which I/O library to use: libio, or something specific.
1092 dnl GLIBCPP_ENABLE_CSTDIO
1093 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1095 dnl default is stdio
1097 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1098 AC_MSG_CHECKING([for cstdio to use])
1099 AC_ARG_ENABLE(cstdio,
1100 [ --enable-cstdio enable stdio for target io package.
1101 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1103 if test x$enable_cstdio = xno; then
1106 enable_cstdio=stdio)
1108 enable_cstdio_flag=$enable_cstdio
1110 dnl Check if a valid I/O package
1111 case x${enable_cstdio_flag} in
1113 CSTDIO_H=config/c_io_libio.h
1114 BASIC_FILE_H=config/basic_file_libio.h
1115 BASIC_FILE_CC=config/basic_file_libio.cc
1116 AC_MSG_RESULT(libio)
1118 # see if we are on a system with libio native (ie, linux)
1119 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1121 # Need to check and see what version of glibc is being used. If
1122 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1123 # compile most of libio for linux systems.
1124 if test x$has_libio = x"yes"; then
1127 AC_MSG_CHECKING([for glibc version >= 2.2])
1128 AC_EGREP_CPP([ok], [
1129 #include <features.h>
1130 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1133 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1134 AC_MSG_RESULT($glibc_satisfactory)
1138 # XXX at the moment, admit defeat and force the recompilation
1139 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1140 glibc_satisfactory=no
1142 if test x$glibc_satisfactory = x"yes"; then
1147 # bkoz XXX need to add checks to enable this
1148 # pme XXX here's a first pass at such a check
1149 if test x$enable_c_mbchar != xno; then
1157 # Using libio, but <libio.h> doesn't exist on the target system. . .
1159 # bkoz XXX need to add checks to enable this
1160 # pme XXX here's a first pass at such a check
1161 if test x$enable_c_mbchar != xno; then
1168 xstdio | x | xno | xnone | xyes)
1170 CSTDIO_H=config/c_io_stdio.h
1171 BASIC_FILE_H=config/basic_file_stdio.h
1172 BASIC_FILE_CC=config/basic_file_stdio.cc
1173 AC_MSG_RESULT(stdio)
1175 # We're not using stdio.
1180 echo "$enable_cstdio is an unknown io package" 1>&2
1184 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1185 AC_LINK_FILES($BASIC_FILE_H, include/bits/basic_file_model.h)
1186 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1188 # 2000-08-04 bkoz hack
1189 CCODECVT_C=config/c_io_libio_codecvt.c
1190 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1191 # 2000-08-04 bkoz hack
1193 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1194 test "$need_libio" = yes || test "$need_wlibio" = yes)
1195 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1196 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1197 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1198 libio_la=../libio/libio.la
1207 dnl Check for which threading library to use.
1209 dnl GLIBCPP_ENABLE_THREADS
1210 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1212 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1213 dnl libio. Any actual thread package will enable it.
1215 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1216 dnl Note this comes from the gcc/config.in and libjava/config.in
1217 dnl Efforts should be made to keep this in sync.
1218 AC_MSG_CHECKING([for threads package to use])
1219 AC_ARG_ENABLE(threads,
1220 [ --enable-threads enable thread usage for target GCC.
1221 --enable-threads=LIB use LIB thread package for target GCC. [default=no]
1223 if test x$enable_threads = xno; then
1228 enable_threads_flag=$enable_threads
1230 dnl Check if a valid thread package
1231 case x${enable_threads_flag} in
1234 target_thread_file='single'
1238 target_thread_file='posix'
1240 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1241 xsolaris | xwin32 | xdce | xvxworks)
1242 target_thread_file=$enable_threads_flag
1245 echo "$enable_threads is an unknown thread package" 1>&2
1250 dnl Check for thread package actually supported in libstdc++
1252 case "$target_thread_file" in
1254 THREADH=threads-no.h
1257 THREADH=threads-posix.h
1259 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1260 AC_MSG_ERROR(thread package $THREADS not yet supported)
1263 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1266 AC_MSG_RESULT($THREADH)
1268 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1269 if test $THREADH != threads-no.h; then
1270 AC_DEFINE(_GLIBCPP_USE_THREADS)
1276 dnl Check for template specializations for the 'long long' type extension.
1278 dnl GLIBCPP_ENABLE_LONG_LONG
1279 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1280 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1281 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1282 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1283 dnl defaults to `no'.
1284 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1286 dnl GLIBCPP_ENABLE_LONG_LONG
1287 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1288 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1290 AC_ARG_ENABLE(long-long,
1291 changequote(<<, >>)dnl
1292 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1293 changequote([, ])dnl
1294 [case "$enableval" in
1295 yes) enable_long_long=yes ;;
1296 no) enable_long_long=no ;;
1297 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1299 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1301 # Allow use of os-dependent settings, so that macros that turn on
1302 # C99 capabilities can be defined and used in a consistent way.
1303 OS_INC_PATH=${srcdir}/$os_include_dir
1304 ac_test_CFLAGS="${CFLAGS+set}"
1305 ac_save_CFLAGS="$CFLAGS"
1306 CFLAGS="-I$OS_INC_PATH"
1308 # Check for the existence of functions used if long long is enabled.
1309 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1310 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1312 # Check for lldiv_t, et. al.
1313 AC_MSG_CHECKING([for lldiv_t declaration])
1314 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1315 AC_TRY_COMPILE([#include <bits/os_defines.h>
1316 #include <stdlib.h>],
1318 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1320 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1321 if test x$glibcpp_lldiv_t_use = x"yes"; then
1322 AC_DEFINE(HAVE_LLDIV_T)
1325 AC_MSG_CHECKING([for enabled long long])
1326 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1327 enable_long_long=no;
1329 AC_MSG_RESULT($enable_long_long)
1331 # Option parsed, now set things appropriately
1332 if test x"$enable_long_long" = xyes; then
1333 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1337 CFLAGS="$ac_save_CFLAGS"
1342 dnl Check for what kind of C headers to use.
1344 dnl GLIBCPP_ENABLE_CHEADERS
1345 dnl --enable-cheaders= [does stuff].
1346 dnl --disable-cheaders [does not do anything, really].
1347 dnl + This will eventually need to be 'c_shadow' by default.
1348 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1349 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1350 dnl If ommitted, it defaults to `c_std'.
1351 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1352 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1353 AC_MSG_CHECKING([for c header strategy to use])
1354 AC_ARG_ENABLE(cheaders,
1355 changequote(<<, >>)dnl
1356 << --enable-cheaders construct "C" header files for
1357 g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1359 [case "$enableval" in
1364 enable_cheaders=c_std
1367 enable_cheaders=c_shadow
1369 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1372 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1373 AC_MSG_RESULT($enable_cheaders)
1375 dnl Option parsed, now set things appropriately
1376 case "$enable_cheaders" in
1378 CSHADOW_FLAGS="-fno-builtin"
1379 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1380 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1384 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1388 C_INCLUDE_DIR='${top_srcdir}/include/c'
1392 AC_SUBST(CSHADOW_FLAGS)
1393 AC_SUBST(C_INCLUDE_DIR)
1394 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1399 dnl Check for wide character support. Has the same effect as the option
1400 dnl in gcc's configure, but in a form that autoconf can mess with.
1402 dnl GLIBCPP_ENABLE_C_MBCHAR
1403 dnl --enable-c-mbchar requests all the wchar_t stuff.
1404 dnl --disable-c-mbchar doesn't.
1405 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1406 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1407 dnl defaults to `no'.
1408 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1409 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1410 AC_ARG_ENABLE(c-mbchar,
1411 changequote(<<, >>)dnl
1412 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1413 changequote([, ])dnl
1414 [case "$enableval" in
1415 yes) enable_c_mbchar=yes ;;
1416 no) enable_c_mbchar=no ;;
1417 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1419 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1420 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1425 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1427 dnl GLIBCPP_INCLUDE_DIR
1429 dnl TOPLEVEL_INCLUDES
1430 dnl LIBMATH_INCLUDES
1431 dnl LIBSUPCXX_INCLUDES
1433 dnl CSHADOW_INCLUDES
1435 dnl GLIBCPP_EXPORT_INCLUDE
1436 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1437 # Root level of the include sources.
1438 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1440 # Can either use include/c or include/c_std to grab "C" headers. This
1441 # variable is set to the include directory currently in use.
1442 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1444 # Passed down for canadian crosses.
1445 if test x"$CANADIAN" = xyes; then
1446 TOPLEVEL_INCLUDES='-I$(includedir)'
1449 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1451 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1453 #if GLIBCPP_NEED_LIBIO
1454 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1456 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1459 #if GLIBCPP_USE_CSHADOW
1460 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1461 # -I$(top_blddir)/cshadow'
1463 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1466 # Now, export this to all the little Makefiles....
1467 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1468 AC_SUBST(TOPLEVEL_INCLUDES)
1469 AC_SUBST(LIBMATH_INCLUDES)
1470 AC_SUBST(LIBSUPCXX_INCLUDES)
1471 AC_SUBST(LIBIO_INCLUDES)
1472 AC_SUBST(CSTD_INCLUDES)
1477 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1479 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1480 # Optimization flags that are probably a good idea for thrill-seekers. Just
1481 # uncomment the lines below and make, everything else is ready to go...
1482 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1484 AC_SUBST(OPTIMIZE_CXXFLAGS)
1486 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1487 AC_SUBST(WARN_FLAGS)
1491 dnl GLIBCPP_EXPORT_INSTALL_INFO
1492 dnl calculates gxx_install_dir
1493 dnl exports glibcpp_toolexecdir
1494 dnl exports glibcpp_toolexeclibdir
1496 dnl Assumes cross_compiling bits already done, and with_cross_host in
1499 dnl GLIBCPP_EXPORT_INSTALL_INFO
1500 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1502 glibcpp_toolexecdir=no
1503 glibcpp_toolexeclibdir=no
1505 AC_MSG_CHECKING([for interface version number])
1506 libstdcxx_interface=$INTERFACE
1507 AC_MSG_RESULT($libstdcxx_interface)
1509 # Process the option --with-gxx-include-dir=<path to include-files directory>
1510 AC_MSG_CHECKING([for --with-gxx-include-dir])
1511 AC_ARG_WITH(gxx-include-dir,
1512 [ --with-gxx-include-dir the installation directory for include files],
1513 [case "${withval}" in
1515 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1522 gxx_include_dir=${withval}
1524 esac], [gxx_include_dir=no])
1525 AC_MSG_RESULT($gxx_include_dir)
1527 # Process the option "--enable-version-specific-runtime-libs"
1528 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1529 AC_ARG_ENABLE(version-specific-runtime-libs,
1530 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1531 [ version_specific_libs=yes
1532 # Need the gcc compiler version to know where to install libraries
1533 # and header files if --enable-version-specific-runtime-libs option
1536 gcc_version_trigger=${srcdir}/../gcc/version.c
1537 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1538 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1539 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1540 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1541 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}
1543 ],version_specific_libs=no)
1544 AC_MSG_RESULT($version_specific_libs)
1546 # Default case for install directory for include files.
1547 if test x"$version_specific_libs" = x"no" \
1548 && test x"$gxx_include_dir"=x"no"; then
1549 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1552 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1553 # Install a library built with a cross compiler in tooldir, not libdir.
1554 if test x"$glibcpp_toolexecdir" = x"no"; then
1555 if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
1556 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1557 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1559 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1560 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1564 AC_MSG_CHECKING([for install location])
1565 AC_MSG_RESULT($gxx_include_dir)
1567 AC_SUBST(gxx_include_dir)
1568 AC_SUBST(glibcpp_toolexecdir)
1569 AC_SUBST(glibcpp_toolexeclibdir)
1573 # Check whether LC_MESSAGES is available in <locale.h>.
1574 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1576 # This file file be copied and used freely without restrictions. It can
1577 # be used in projects which are not available under the GNU Public License
1578 # but which still want to provide support for the GNU gettext functionality.
1579 # Please note that the actual code is *not* freely available.
1583 AC_DEFUN(AC_LC_MESSAGES, [
1584 AC_CHECK_HEADER(locale.h, [
1585 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1586 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1587 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1588 if test $ac_cv_val_LC_MESSAGES = yes; then
1589 AC_DEFINE(HAVE_LC_MESSAGES)
1595 # Check for functions in math library.
1596 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1598 # This file can be copied and used freely without restrictions. It can
1599 # be used in projects which are not available under the GNU Public License
1600 # but which still want to provide support for the GNU gettext functionality.
1601 # Please note that the actual code is *not* freely available.
1605 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1606 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1607 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1608 AC_SUBST(LIBMATHOBJS)dnl
1612 # Check for string functions.
1613 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1615 # This file can be copied and used freely without restrictions. It can
1616 # be used in projects which are not available under the GNU Public License
1617 # but which still want to provide support for the GNU gettext functionality.
1618 # Please note that the actual code is *not* freely available.
1622 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1623 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1624 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1625 AC_SUBST(LIBSTRINGOBJS)dnl
1629 dnl This macro searches for a GNU version of make. If a match is found, the
1630 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1631 dnl set to "#". This is useful for including a special features in a Makefile,
1632 dnl which cannot be handled by other versions of make. The variable
1633 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1634 dnl the empty string otherwise.
1636 dnl Here is an example of its use:
1638 dnl Makefile.in might contain:
1640 dnl # A failsafe way of putting a dependency rule into a makefile
1642 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1644 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1645 dnl @ifGNUmake@ include $(DEPEND)
1646 dnl @ifGNUmake@ endif
1648 dnl Then configure.in would normally contain:
1650 dnl CHECK_GNU_MAKE()
1651 dnl AC_OUTPUT(Makefile)
1653 dnl Then perhaps to cause gnu make to override any other make, we could do
1654 dnl something like this (note that GNU make always looks for GNUmakefile first):
1656 dnl if ! test x$_cv_gnu_make_command = x ; then
1657 dnl mv Makefile GNUmakefile
1658 dnl echo .DEFAULT: > Makefile ;
1659 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1662 dnl Then, if any (well almost any) other make is called, and GNU make also
1663 dnl exists, then the other make wraps the GNU make.
1665 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1666 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1668 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1669 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1670 dnl #### conditional's subshell (" --version" is not a command), using a
1671 dnl #### different option to grep(1).
1673 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1674 dnl #### ${MAKE:-make}).
1677 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1678 _cv_gnu_make_command='' ;
1679 dnl Search all the common names for GNU make
1680 for a in "${MAKE-make}" make gmake gnumake ; do
1681 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1683 _cv_gnu_make_command=$a ;
1688 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1689 dnl string, '#' otherwise
1690 if test "x$_cv_gnu_make_command" != "x" ; then
1698 sinclude(../libtool.m4)
1699 dnl The lines below arrange for aclocal not to bring an installed
1700 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1701 dnl add a definition of LIBTOOL to Makefile.in.
1702 ifelse(,,,[AC_SUBST(LIBTOOL)
1703 AC_DEFUN([AM_PROG_LIBTOOL])
1704 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1705 AC_DEFUN([AC_PROG_LD])
1709 # Do all the work for Automake. This macro actually does too much --
1710 # some checks are only needed if your package does certain things.
1711 # But this isn't really a big deal.
1716 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1718 AC_DEFUN(AM_INIT_AUTOMAKE,
1719 [AC_REQUIRE([AC_PROG_INSTALL])
1724 dnl test to see if srcdir already configured
1725 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1726 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1729 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1730 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1731 AC_REQUIRE([AM_SANITY_CHECK])
1732 AC_REQUIRE([AC_ARG_PROGRAM])
1733 dnl FIXME This is truly gross.
1734 missing_dir=`cd $ac_aux_dir && pwd`
1735 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1736 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1737 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1738 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1739 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1740 AC_REQUIRE([AC_PROG_MAKE_SET])])
1743 # Check to make sure that the build environment is sane.
1746 AC_DEFUN(AM_SANITY_CHECK,
1747 [AC_MSG_CHECKING([whether build environment is sane])
1750 echo timestamp > conftestfile
1751 # Do `set' in a subshell so we don't clobber the current shell's
1752 # arguments. Must try -L first in case configure is actually a
1753 # symlink; some systems play weird games with the mod time of symlinks
1754 # (eg FreeBSD returns the mod time of the symlink's containing
1757 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1758 if test "[$]*" = "X"; then
1760 set X `ls -t $srcdir/configure conftestfile`
1762 if test "[$]*" != "X $srcdir/configure conftestfile" \
1763 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1765 # If neither matched, then we have a broken ls. This can happen
1766 # if, for instance, CONFIG_SHELL is bash and it inherits a
1767 # broken ls alias from the environment. This has actually
1768 # happened. Such a system could not be considered "sane".
1769 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1770 alias in your environment])
1773 test "[$]2" = conftestfile
1779 AC_MSG_ERROR([newly created file is older than distributed files!
1780 Check your system clock])
1783 AC_MSG_RESULT(yes)])
1785 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1786 dnl The program must properly implement --version.
1787 AC_DEFUN(AM_MISSING_PROG,
1788 [AC_MSG_CHECKING(for working $2)
1789 # Run test in a subshell; some versions of sh will print an error if
1790 # an executable is not found, even if stderr is redirected.
1791 # Redirect stdin to placate older versions of autoconf. Sigh.
1792 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1794 AC_MSG_RESULT(found)
1797 AC_MSG_RESULT(missing)
1801 # Add --enable-maintainer-mode option to configure.
1806 AC_DEFUN(AM_MAINTAINER_MODE,
1807 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1808 dnl maintainer-mode is disabled by default
1809 AC_ARG_ENABLE(maintainer-mode,
1810 [ --enable-maintainer-mode enable make rules and dependencies not useful
1811 (and sometimes confusing) to the casual installer],
1812 USE_MAINTAINER_MODE=$enableval,
1813 USE_MAINTAINER_MODE=no)
1814 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1815 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1816 MAINT=$MAINTAINER_MODE_TRUE
1821 # Define a conditional.
1823 AC_DEFUN(AM_CONDITIONAL,
1834 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1836 AC_DEFUN(AM_CONFIG_HEADER,
1838 AC_CONFIG_HEADER([$1])
1839 dnl When config.status generates a header, we must update the stamp-h file.
1840 dnl This file resides in the same directory as the config header
1841 dnl that is generated. We must strip everything past the first ":",
1842 dnl and everything past the last "/".
1843 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1844 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1845 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1847 for am_file in <<$1>>; do
1848 case " <<$>>CONFIG_HEADERS " in
1849 *" <<$>>am_file "*<<)>>
1850 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1853 am_indx=`expr "<<$>>am_indx" + 1`