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"$ac_XPG2_wchar_t" = xyes; then
867 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
873 dnl Wide characters disabled by the user.
874 AC_MSG_WARN([wchar_t support disabled.])
880 dnl Check to see if this version of GNU C++ is afflicted by bugs in
881 dnl __complex__ float support.
883 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
885 dnl Check to see if this version of GNU C++ is afflicted by bugs in
886 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
887 dnl gcc-2.95.x when using the library, unless we define the default copy
888 dnl ctor in the specializations of complex<>.
890 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
891 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
892 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
893 AC_REQUIRE([AC_PROG_CXX])
895 AC_MSG_CHECKING([for GNU C++ __complex__ support])
896 AC_CACHE_VAL(glibcpp_cv_complex, [
899 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
900 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
901 [ dcomplex x; f(x); ],
902 glibcpp_cv_complex=ok,
903 glibcpp_cv_complex=buggy
907 AC_MSG_RESULT($glibcpp_cv_complex)
908 if test $glibcpp_cv_complex = buggy; then
909 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
912 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
913 AC_CACHE_VAL(glibcpp_cv_float_complex, [
917 cat > conftest.h <<EOB
919 // Check for buggy __complex__ that causes ICE in most versions of egcs
920 // and gcc-2.95.x on certain platforms (eg., x86-win32).
922 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
923 // more info on the bug itself.
928 __complex__ float m_value;
929 float_complex (float = 0.0f, float = 0.0f);
930 float_complex (__complex__ float val) : m_value (val) {}
931 float_complex foo (const float_complex &val)
932 { return float_complex (~val.m_value); }
935 AC_TRY_COMPILE([#include "conftest.h"], ,
936 glibcpp_cv_float_complex=ok,
937 glibcpp_cv_float_complex=buggy
941 AC_MSG_RESULT($glibcpp_cv_float_complex)
942 if test $glibcpp_cv_float_complex = buggy; then
943 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
949 dnl Check for special debugging mode; not for production use.
951 dnl GLIBCPP_ENABLE_DEBUG
952 dnl --enable-debug sets '-ggdb3 -O0'.
953 dnl --disable-debug sets '-g' and whatever optimization options the
954 dnl compiler can handle.
955 dnl + --enable-maintainer-mode automatically defaults this to on.
956 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
957 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
958 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
959 dnl defaults to `no'.
960 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
961 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
963 changequote(<<, >>)dnl
964 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
966 [case "${enableval}" in
967 yes) enable_debug=yes ;;
968 no) enable_debug=no ;;
969 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
971 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
973 dnl Option parsed, now set things appropriately
974 case "${enable_debug}" in
976 DEBUG_FLAGS='-O0 -ggdb3'
982 AC_SUBST(DEBUG_FLAGS)
987 dnl Check for "unusual" flags to pass to the compiler while building.
989 dnl GLIBCPP_ENABLE_CXX_FLAGS
990 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
991 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
992 dnl Somehow this same set of flags must be passed when [re]building
994 dnl --disable-cxx-flags passes nothing.
995 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
996 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
997 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
998 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
999 dnl If "default flags" is an empty string (or "none"), the effect is
1000 dnl the same as --disable or --enable=no.
1001 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1002 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1003 AC_ARG_ENABLE(cxx-flags,
1004 changequote(<<, >>)dnl
1005 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1006 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1007 changequote([, ])dnl
1008 [case "x$enableval" in
1010 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1012 enable_cxx_flags='' ;;
1014 enable_cxx_flags="$enableval" ;;
1016 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1018 dnl Thinko on my part during design. This kludge is the workaround.
1019 if test "$enable_cxx_flags" = "none"; then
1020 enable_cxx_flags='';
1023 dnl Run through flags (either default or command-line) and set anything
1024 dnl extra (e.g., #defines) that must accompany particular g++ options.
1025 if test -n "$enable_cxx_flags"; then
1026 for f in $enable_cxx_flags; do
1030 *) # and we're trying to pass /what/ exactly?
1031 AC_MSG_ERROR([compiler flags start with a -]) ;;
1035 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1036 AC_SUBST(EXTRA_CXX_FLAGS)
1041 dnl Check for which locale library to use: gnu or generic.
1043 dnl GLIBCPP_ENABLE_CLOCALE
1044 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
1045 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
1047 dnl default is generic
1049 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1050 AC_MSG_CHECKING([for clocale to use])
1051 AC_ARG_ENABLE(clocale,
1052 [ --enable-clocale enable model for target locale package.
1053 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1055 if test x$enable_clocale = xno; then
1056 enable_clocale=generic
1058 enable_clocale=generic)
1060 enable_clocale_flag=$enable_clocale
1062 dnl Check if a valid locale package
1063 case x${enable_clocale_flag} in
1065 CLOCALE_H=config/c_locale_gnu.h
1066 CLOCALE_CC=config/c_locale_gnu.cc
1070 CLOCALE_H=config/c_locale_generic.h
1071 CLOCALE_CC=config/c_locale_generic.cc
1072 AC_MSG_RESULT(generic)
1075 echo "$enable_clocale is an unknown locale package" 1>&2
1080 AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h)
1081 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1086 dnl Check for which I/O library to use: libio, or something specific.
1088 dnl GLIBCPP_ENABLE_CSTDIO
1089 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1091 dnl default is stdio
1093 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1094 AC_MSG_CHECKING([for cstdio to use])
1095 AC_ARG_ENABLE(cstdio,
1096 [ --enable-cstdio enable stdio for target io package.
1097 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1099 if test x$enable_cstdio = xno; then
1102 enable_cstdio=stdio)
1104 enable_cstdio_flag=$enable_cstdio
1106 dnl Check if a valid I/O package
1107 case x${enable_cstdio_flag} in
1109 CSTDIO_H=config/c_io_libio.h
1110 BASIC_FILE_H=config/basic_file_libio.h
1111 BASIC_FILE_CC=config/basic_file_libio.cc
1112 AC_MSG_RESULT(libio)
1114 # see if we are on a system with libio native (ie, linux)
1115 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1117 # Need to check and see what version of glibc is being used. If
1118 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1119 # compile most of libio for linux systems.
1120 if test x$has_libio = x"yes"; then
1123 AC_MSG_CHECKING([for glibc version >= 2.2])
1124 AC_EGREP_CPP([ok], [
1125 #include <features.h>
1126 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1129 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1130 AC_MSG_RESULT($glibc_satisfactory)
1134 # XXX at the moment, admit defeat and force the recompilation
1135 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1136 glibc_satisfactory=no
1138 if test x$glibc_satisfactory = x"yes"; then
1143 # bkoz XXX need to add checks to enable this
1144 # pme XXX here's a first pass at such a check
1145 if test x$enable_c_mbchar != xno; then
1153 # Using libio, but <libio.h> doesn't exist on the target system. . .
1155 # bkoz XXX need to add checks to enable this
1156 # pme XXX here's a first pass at such a check
1157 if test x$enable_c_mbchar != xno; then
1164 xstdio | x | xno | xnone | xyes)
1166 CSTDIO_H=config/c_io_stdio.h
1167 BASIC_FILE_H=config/basic_file_stdio.h
1168 BASIC_FILE_CC=config/basic_file_stdio.cc
1169 AC_MSG_RESULT(stdio)
1171 # We're not using stdio.
1176 echo "$enable_cstdio is an unknown io package" 1>&2
1180 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1181 AC_LINK_FILES($BASIC_FILE_H, include/bits/basic_file_model.h)
1182 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1184 # 2000-08-04 bkoz hack
1185 CCODECVT_C=config/c_io_libio_codecvt.c
1186 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1187 # 2000-08-04 bkoz hack
1189 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1190 test "$need_libio" = yes || test "$need_wlibio" = yes)
1191 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1192 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1193 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1194 libio_la=../libio/libio.la
1203 dnl Check for which threading library to use.
1205 dnl GLIBCPP_ENABLE_THREADS
1206 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1208 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1209 dnl libio. Any actual thread package will enable it.
1211 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1212 dnl Note this comes from the gcc/config.in and libjava/config.in
1213 dnl Efforts should be made to keep this in sync.
1214 AC_MSG_CHECKING([for threads package to use])
1215 AC_ARG_ENABLE(threads,
1216 [ --enable-threads enable thread usage for target GCC.
1217 --enable-threads=LIB use LIB thread package for target GCC. [default=no]
1219 if test x$enable_threads = xno; then
1224 enable_threads_flag=$enable_threads
1226 dnl Check if a valid thread package
1227 case x${enable_threads_flag} in
1230 target_thread_file='single'
1234 target_thread_file='posix'
1236 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1237 xsolaris | xwin32 | xdce | xvxworks)
1238 target_thread_file=$enable_threads_flag
1241 echo "$enable_threads is an unknown thread package" 1>&2
1246 dnl Check for thread package actually supported in libstdc++
1248 case "$target_thread_file" in
1250 THREADH=threads-no.h
1253 THREADH=threads-posix.h
1255 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1256 AC_MSG_ERROR(thread package $THREADS not yet supported)
1259 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1262 AC_MSG_RESULT($THREADH)
1264 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1265 if test $THREADH != threads-no.h; then
1266 AC_DEFINE(_GLIBCPP_USE_THREADS)
1272 dnl Check for template specializations for the 'long long' type extension.
1274 dnl GLIBCPP_ENABLE_LONG_LONG
1275 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1276 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1277 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1278 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1279 dnl defaults to `no'.
1280 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1282 dnl GLIBCPP_ENABLE_LONG_LONG
1283 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1284 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1286 AC_ARG_ENABLE(long-long,
1287 changequote(<<, >>)dnl
1288 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1289 changequote([, ])dnl
1290 [case "$enableval" in
1291 yes) enable_long_long=yes ;;
1292 no) enable_long_long=no ;;
1293 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1295 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1297 # Allow use of os-dependent settings, so that macros that turn on
1298 # C99 capabilities can be defined and used in a consistent way.
1299 OS_INC_PATH=${srcdir}/$os_include_dir
1300 ac_test_CFLAGS="${CFLAGS+set}"
1301 ac_save_CFLAGS="$CFLAGS"
1302 CFLAGS="-I$OS_INC_PATH"
1304 # Check for the existence of functions used if long long is enabled.
1305 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1306 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1308 # Check for lldiv_t, et. al.
1309 AC_MSG_CHECKING([for lldiv_t declaration])
1310 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1311 AC_TRY_COMPILE([#include <bits/os_defines.h>
1312 #include <stdlib.h>],
1314 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1316 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1317 if test x$glibcpp_lldiv_t_use = x"yes"; then
1318 AC_DEFINE(HAVE_LLDIV_T)
1321 AC_MSG_CHECKING([for enabled long long])
1322 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1323 enable_long_long=no;
1325 AC_MSG_RESULT($enable_long_long)
1327 # Option parsed, now set things appropriately
1328 if test x"$enable_long_long" = xyes; then
1329 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1333 CFLAGS="$ac_save_CFLAGS"
1338 dnl Check for what kind of C headers to use.
1340 dnl GLIBCPP_ENABLE_CHEADERS
1341 dnl --enable-cheaders= [does stuff].
1342 dnl --disable-cheaders [does not do anything, really].
1343 dnl + This will eventually need to be 'c_shadow' by default.
1344 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1345 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1346 dnl If ommitted, it defaults to `c_std'.
1347 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1348 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1349 AC_MSG_CHECKING([for c header strategy to use])
1350 AC_ARG_ENABLE(cheaders,
1351 changequote(<<, >>)dnl
1352 << --enable-cheaders construct "C" header files for
1353 g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1355 [case "$enableval" in
1360 enable_cheaders=c_std
1363 enable_cheaders=c_shadow
1365 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1368 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1369 AC_MSG_RESULT($enable_cheaders)
1371 dnl Option parsed, now set things appropriately
1372 case "$enable_cheaders" in
1374 CSHADOW_FLAGS="-fno-builtin"
1375 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1376 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1380 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1384 C_INCLUDE_DIR='${top_srcdir}/include/c'
1388 AC_SUBST(CSHADOW_FLAGS)
1389 AC_SUBST(C_INCLUDE_DIR)
1390 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1395 dnl Check for wide character support. Has the same effect as the option
1396 dnl in gcc's configure, but in a form that autoconf can mess with.
1398 dnl GLIBCPP_ENABLE_C_MBCHAR
1399 dnl --enable-c-mbchar requests all the wchar_t stuff.
1400 dnl --disable-c-mbchar doesn't.
1401 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1402 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1403 dnl defaults to `no'.
1404 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1405 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1406 AC_ARG_ENABLE(c-mbchar,
1407 changequote(<<, >>)dnl
1408 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1409 changequote([, ])dnl
1410 [case "$enableval" in
1411 yes) enable_c_mbchar=yes ;;
1412 no) enable_c_mbchar=no ;;
1413 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1415 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1416 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1421 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1423 dnl GLIBCPP_INCLUDE_DIR
1425 dnl TOPLEVEL_INCLUDES
1426 dnl LIBMATH_INCLUDES
1427 dnl LIBSUPCXX_INCLUDES
1429 dnl CSHADOW_INCLUDES
1431 dnl GLIBCPP_EXPORT_INCLUDE
1432 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1433 # Root level of the include sources.
1434 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1436 # Can either use include/c or include/c_std to grab "C" headers. This
1437 # variable is set to the include directory currently in use.
1438 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1440 # Passed down for canadian crosses.
1441 if test x"$CANADIAN" = xyes; then
1442 TOPLEVEL_INCLUDES='-I$(includedir)'
1445 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1447 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1449 #if GLIBCPP_NEED_LIBIO
1450 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1452 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1455 #if GLIBCPP_USE_CSHADOW
1456 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1457 # -I$(top_blddir)/cshadow'
1459 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1462 # Now, export this to all the little Makefiles....
1463 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1464 AC_SUBST(TOPLEVEL_INCLUDES)
1465 AC_SUBST(LIBMATH_INCLUDES)
1466 AC_SUBST(LIBSUPCXX_INCLUDES)
1467 AC_SUBST(LIBIO_INCLUDES)
1468 AC_SUBST(CSTD_INCLUDES)
1473 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1475 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1476 # Optimization flags that are probably a good idea for thrill-seekers. Just
1477 # uncomment the lines below and make, everything else is ready to go...
1478 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1480 AC_SUBST(OPTIMIZE_CXXFLAGS)
1482 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1483 AC_SUBST(WARN_FLAGS)
1487 dnl GLIBCPP_EXPORT_INSTALL_INFO
1488 dnl calculates gxx_install_dir
1489 dnl exports glibcpp_toolexecdir
1490 dnl exports glibcpp_toolexeclibdir
1492 dnl Assumes cross_compiling bits already done, and with_cross_host in
1495 dnl GLIBCPP_EXPORT_INSTALL_INFO
1496 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1498 glibcpp_toolexecdir=no
1499 glibcpp_toolexeclibdir=no
1501 AC_MSG_CHECKING([for interface version number])
1502 libstdcxx_interface=$INTERFACE
1503 AC_MSG_RESULT($libstdcxx_interface)
1505 # Process the option --with-gxx-include-dir=<path to include-files directory>
1506 AC_MSG_CHECKING([for --with-gxx-include-dir])
1507 AC_ARG_WITH(gxx-include-dir,
1508 [ --with-gxx-include-dir the installation directory for include files],
1509 [case "${withval}" in
1511 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1518 gxx_include_dir=${withval}
1520 esac], [gxx_include_dir=no])
1521 AC_MSG_RESULT($gxx_include_dir)
1523 # Process the option "--enable-version-specific-runtime-libs"
1524 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1525 AC_ARG_ENABLE(version-specific-runtime-libs,
1526 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1527 [ version_specific_libs=yes
1528 # Need the gcc compiler version to know where to install libraries
1529 # and header files if --enable-version-specific-runtime-libs option
1532 gcc_version_trigger=${srcdir}/../gcc/version.c
1533 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1534 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1535 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1536 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1537 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}
1539 ],version_specific_libs=no)
1540 AC_MSG_RESULT($version_specific_libs)
1542 # Default case for install directory for include files.
1543 if test x"$version_specific_libs" = x"no" \
1544 && test x"$gxx_include_dir" = x"no"; then
1545 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1548 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1549 # Install a library built with a cross compiler in tooldir, not libdir.
1550 if test x"$glibcpp_toolexecdir" = x"no"; then
1551 if test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
1552 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1553 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1555 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1556 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1560 AC_MSG_CHECKING([for install location])
1561 AC_MSG_RESULT($gxx_include_dir)
1563 AC_SUBST(gxx_include_dir)
1564 AC_SUBST(glibcpp_toolexecdir)
1565 AC_SUBST(glibcpp_toolexeclibdir)
1569 # Check whether LC_MESSAGES is available in <locale.h>.
1570 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1572 # This file file be copied and used freely without restrictions. It can
1573 # be used in projects which are not available under the GNU Public License
1574 # but which still want to provide support for the GNU gettext functionality.
1575 # Please note that the actual code is *not* freely available.
1579 AC_DEFUN(AC_LC_MESSAGES, [
1580 AC_CHECK_HEADER(locale.h, [
1581 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1582 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1583 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1584 if test $ac_cv_val_LC_MESSAGES = yes; then
1585 AC_DEFINE(HAVE_LC_MESSAGES)
1591 # Check for functions in math library.
1592 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1594 # This file can be copied and used freely without restrictions. It can
1595 # be used in projects which are not available under the GNU Public License
1596 # but which still want to provide support for the GNU gettext functionality.
1597 # Please note that the actual code is *not* freely available.
1601 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1602 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1603 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1604 AC_SUBST(LIBMATHOBJS)dnl
1608 # Check for string functions.
1609 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1611 # This file can be copied and used freely without restrictions. It can
1612 # be used in projects which are not available under the GNU Public License
1613 # but which still want to provide support for the GNU gettext functionality.
1614 # Please note that the actual code is *not* freely available.
1618 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1619 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1620 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1621 AC_SUBST(LIBSTRINGOBJS)dnl
1625 dnl This macro searches for a GNU version of make. If a match is found, the
1626 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1627 dnl set to "#". This is useful for including a special features in a Makefile,
1628 dnl which cannot be handled by other versions of make. The variable
1629 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1630 dnl the empty string otherwise.
1632 dnl Here is an example of its use:
1634 dnl Makefile.in might contain:
1636 dnl # A failsafe way of putting a dependency rule into a makefile
1638 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1640 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1641 dnl @ifGNUmake@ include $(DEPEND)
1642 dnl @ifGNUmake@ endif
1644 dnl Then configure.in would normally contain:
1646 dnl CHECK_GNU_MAKE()
1647 dnl AC_OUTPUT(Makefile)
1649 dnl Then perhaps to cause gnu make to override any other make, we could do
1650 dnl something like this (note that GNU make always looks for GNUmakefile first):
1652 dnl if ! test x$_cv_gnu_make_command = x ; then
1653 dnl mv Makefile GNUmakefile
1654 dnl echo .DEFAULT: > Makefile ;
1655 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1658 dnl Then, if any (well almost any) other make is called, and GNU make also
1659 dnl exists, then the other make wraps the GNU make.
1661 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1662 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1664 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1665 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1666 dnl #### conditional's subshell (" --version" is not a command), using a
1667 dnl #### different option to grep(1).
1669 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1670 dnl #### ${MAKE:-make}).
1673 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1674 _cv_gnu_make_command='' ;
1675 dnl Search all the common names for GNU make
1676 for a in "${MAKE-make}" make gmake gnumake ; do
1677 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1679 _cv_gnu_make_command=$a ;
1684 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1685 dnl string, '#' otherwise
1686 if test "x$_cv_gnu_make_command" != "x" ; then
1694 sinclude(../libtool.m4)
1695 dnl The lines below arrange for aclocal not to bring an installed
1696 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1697 dnl add a definition of LIBTOOL to Makefile.in.
1698 ifelse(,,,[AC_SUBST(LIBTOOL)
1699 AC_DEFUN([AM_PROG_LIBTOOL])
1700 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1701 AC_DEFUN([AC_PROG_LD])
1705 # Do all the work for Automake. This macro actually does too much --
1706 # some checks are only needed if your package does certain things.
1707 # But this isn't really a big deal.
1712 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1714 AC_DEFUN(AM_INIT_AUTOMAKE,
1715 [AC_REQUIRE([AC_PROG_INSTALL])
1720 dnl test to see if srcdir already configured
1721 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1722 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1725 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1726 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1727 AC_REQUIRE([AM_SANITY_CHECK])
1728 AC_REQUIRE([AC_ARG_PROGRAM])
1729 dnl FIXME This is truly gross.
1730 missing_dir=`cd $ac_aux_dir && pwd`
1731 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1732 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1733 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1734 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1735 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1736 AC_REQUIRE([AC_PROG_MAKE_SET])])
1739 # Check to make sure that the build environment is sane.
1742 AC_DEFUN(AM_SANITY_CHECK,
1743 [AC_MSG_CHECKING([whether build environment is sane])
1746 echo timestamp > conftestfile
1747 # Do `set' in a subshell so we don't clobber the current shell's
1748 # arguments. Must try -L first in case configure is actually a
1749 # symlink; some systems play weird games with the mod time of symlinks
1750 # (eg FreeBSD returns the mod time of the symlink's containing
1753 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1754 if test "[$]*" = "X"; then
1756 set X `ls -t $srcdir/configure conftestfile`
1758 if test "[$]*" != "X $srcdir/configure conftestfile" \
1759 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1761 # If neither matched, then we have a broken ls. This can happen
1762 # if, for instance, CONFIG_SHELL is bash and it inherits a
1763 # broken ls alias from the environment. This has actually
1764 # happened. Such a system could not be considered "sane".
1765 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1766 alias in your environment])
1769 test "[$]2" = conftestfile
1775 AC_MSG_ERROR([newly created file is older than distributed files!
1776 Check your system clock])
1779 AC_MSG_RESULT(yes)])
1781 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1782 dnl The program must properly implement --version.
1783 AC_DEFUN(AM_MISSING_PROG,
1784 [AC_MSG_CHECKING(for working $2)
1785 # Run test in a subshell; some versions of sh will print an error if
1786 # an executable is not found, even if stderr is redirected.
1787 # Redirect stdin to placate older versions of autoconf. Sigh.
1788 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1790 AC_MSG_RESULT(found)
1793 AC_MSG_RESULT(missing)
1797 # Add --enable-maintainer-mode option to configure.
1802 AC_DEFUN(AM_MAINTAINER_MODE,
1803 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1804 dnl maintainer-mode is disabled by default
1805 AC_ARG_ENABLE(maintainer-mode,
1806 [ --enable-maintainer-mode enable make rules and dependencies not useful
1807 (and sometimes confusing) to the casual installer],
1808 USE_MAINTAINER_MODE=$enableval,
1809 USE_MAINTAINER_MODE=no)
1810 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1811 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1812 MAINT=$MAINTAINER_MODE_TRUE
1817 # Define a conditional.
1819 AC_DEFUN(AM_CONDITIONAL,
1830 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1832 AC_DEFUN(AM_CONFIG_HEADER,
1834 AC_CONFIG_HEADER([$1])
1835 dnl When config.status generates a header, we must update the stamp-h file.
1836 dnl This file resides in the same directory as the config header
1837 dnl that is generated. We must strip everything past the first ":",
1838 dnl and everything past the last "/".
1839 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1840 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1841 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1843 for am_file in <<$1>>; do
1844 case " <<$>>CONFIG_HEADERS " in
1845 *" <<$>>am_file "*<<)>>
1846 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1849 am_indx=`expr "<<$>>am_indx" + 1`