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 ${enableval} for multilib option) ;;
27 esac], [multilib=yes])dnl
29 dnl We may get other options which we dont document:
30 dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
31 if test "[$]{srcdir}" = "."; then
32 if test "[$]{with_target_subdir}" != "."; then
33 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
35 glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
38 glibcpp_basedir="[$]{srcdir}/$1"
40 AC_SUBST(glibcpp_basedir)
42 AM_INIT_AUTOMAKE(libstdc++, 2.90.8)
44 # Never versions of autoconf add an underscore to these functions.
45 # Prevent future problems ...
46 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
47 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
48 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
49 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
53 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
54 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
55 # are probably using a cross compiler, which will not be able to fully
56 # link an executable. This should really be fixed in autoconf
59 AC_DEFUN(LIB_AC_PROG_CC,
60 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
61 dnl Fool anybody using AC_PROG_CC.
62 AC_PROVIDE([AC_PROG_CC])
63 AC_CHECK_PROG(CC, gcc, gcc)
64 if test -z "$CC"; then
65 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
66 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
71 if test $ac_cv_prog_gcc = yes; then
73 dnl Check whether -g works, even if CFLAGS is set, in case the package
74 dnl plays around with CFLAGS (such as to build both debugging and
75 dnl normal versions of a library), tasteless as that idea is.
76 ac_test_CFLAGS="${CFLAGS+set}"
77 ac_save_CFLAGS="$CFLAGS"
80 if test "$ac_test_CFLAGS" = set; then
81 CFLAGS="$ac_save_CFLAGS"
82 elif test $ac_cv_prog_cc_g = yes; then
89 test "${CFLAGS+set}" = set || CFLAGS="-g"
95 # Can't just call these here as g++ requires libstc++ to be built....
98 # Likewise for AC_PROG_CXX.
99 AC_DEFUN(LIB_AC_PROG_CXX,
100 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
101 dnl Fool anybody using AC_PROG_CXX.
102 AC_PROVIDE([AC_PROG_CXX])
103 # Use CXX_libstdcxx so that we do not cause CXX to be cached with the
104 # flags that come in CXX while configuring libstdc++. They're different
105 # from those used for all other target libraries. If CXX is set in
106 # the environment, respect that here.
108 AC_CHECK_PROGS(CXX_libstdcxx, $CCC c++ g++ gcc CC cxx cc++, gcc)
111 test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
115 if test $ac_cv_prog_gxx = yes; then
117 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
118 dnl plays around with CXXFLAGS (such as to build both debugging and
119 dnl normal versions of a library), tasteless as that idea is.
120 ac_test_CXXFLAGS="${CXXFLAGS+set}"
121 ac_save_CXXFLAGS="$CXXFLAGS"
124 if test "$ac_test_CXXFLAGS" = set; then
125 CXXFLAGS="$ac_save_CXXFLAGS"
126 elif test $ac_cv_prog_cxx_g = yes; then
133 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
139 AC_CHECK_TOOL(AS, as)
140 AC_CHECK_TOOL(AR, ar)
141 AC_CHECK_TOOL(RANLIB, ranlib, :)
147 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
148 # at least currently, we never actually build a program, so we never
149 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
150 # fails, because we are probably configuring with a cross compiler
151 # which cant create executables. So we include AC_EXEEXT to keep
152 # automake happy, but we dont execute it, since we dont care about
158 # configure.host sets the following important variables
159 # glibcpp_cflags - host specific C compiler flags
160 # glibcpp_cxxflags - host specific C++ compiler flags
164 . [$]{glibcpp_basedir}/configure.host
166 case [$]{glibcpp_basedir} in
167 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
168 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
171 # This does for the target what configure.host does for the host. In
172 # addition to modifying the same flags, it also sets up symlinks.
175 GLIBCPP_CFLAGS="[$]{glibcpp_cflags}"
176 GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}"
177 AC_SUBST(GLIBCPP_CFLAGS)
178 AC_SUBST(GLIBCPP_CXXFLAGS)
183 dnl Check to see if g++ can compile this library, and if so, if any version-
184 dnl specific precautions need to be taken.
186 dnl GLIBCPP_CHECK_COMPILER_VERSION
187 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
188 if test ! -f stamp-sanity-compiler; then
189 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
193 #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
196 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to gcc-2.95 or above]))
198 AC_MSG_RESULT($gpp_satisfactory)
199 touch stamp-sanity-compiler
205 dnl Test for newer compiler features, or features that are present in newer
206 dnl compiler version but not older compiler versions should be placed
209 dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible
211 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
212 dnl new inlining code or the new system_header pragma will die on -Werror.
213 dnl Leave it out by default and use maint-mode to use it.
215 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
216 dnl compiler supports it.
217 dnl GLIBCPP_CHECK_COMPILER_FEATURES
218 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
219 # All these tests are for C++; save the language and the compiler flags.
220 # The CXXFLAGS thing is suspicious, but based on similar bits
221 # found in GLIBCPP_CONFIGURE.
224 ac_test_CXXFLAGS="${CXXFLAGS+set}"
225 ac_save_CXXFLAGS="$CXXFLAGS"
227 # Check for maintainer-mode bits.
228 if test x"$USE_MAINTAINER_MODE" = xno; then
234 # Check for more sophisticated diagnostic control.
235 AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once])
236 CXXFLAGS='-Werror -fdiagnostics-show-location=once'
237 AC_TRY_COMPILE(, [int foo;
238 ], [ac_gabydiags=yes], [ac_gabydiags=no])
239 if test "$ac_test_CXXFLAGS" = set; then
240 CXXFLAGS="$ac_save_CXXFLAGS"
242 # this is the suspicious part
245 if test x"$ac_gabydiags" = x"yes"; then
246 WFMT_FLAGS='-fdiagnostics-show-location=once'
248 AC_MSG_RESULT($ac_gabydiags)
250 # Check for -ffunction-sections -fdata-sections
251 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
252 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
253 AC_TRY_COMPILE(, [int foo;
254 ], [ac_fdsections=yes], [ac_fdsections=no])
255 if test "$ac_test_CXXFLAGS" = set; then
256 CXXFLAGS="$ac_save_CXXFLAGS"
258 # this is the suspicious part
261 if test x"$ac_fdsections" = x"yes" && test x"$enable_debug" = x"no"; then
262 SECTION_FLAGS='-ffunction-sections -fdata-sections'
264 AC_MSG_RESULT($ac_fdsections)
269 AC_SUBST(SECTION_FLAGS)
274 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
275 dnl the native linker is in use, all variables will be defined to something
276 dnl safe (like an empty string).
278 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
279 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
281 dnl GLIBCPP_CHECK_LINKER_FEATURES
282 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
283 # If we're not using GNU ld, then there's no point in even trying these
284 # tests. Check for that first. We should have already tested for gld
285 # by now (in libtool), but require it now just to be safe...
288 AC_REQUIRE([AC_PROG_LD])
291 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
292 # GNU ld it is! Joy and bunny rabbits!
294 # All these tests are for C++; save the language and the compiler flags.
295 # Need to do this so that g++ won't try to link in libstdc++
296 ac_test_CFLAGS="${CFLAGS+set}"
297 ac_save_CFLAGS="$CFLAGS"
298 CFLAGS='-x c++ -Wl,--gc-sections'
300 # Check for -Wl,--gc-sections
301 # XXX This test is broken at the moment, as symbols required for
302 # linking are now in libsupc++ (not built yet.....). In addition,
303 # this test has cored on solaris in the past. In addition,
304 # --gc-sections doesn't really work at the moment (keeps on discarding
305 # used sections, first .eh_frame and now some of the glibc sections for
306 # iconv). Bzzzzt. Thanks for playing, maybe next time.
307 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
315 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
316 if test "$ac_test_CFLAGS" = set; then
317 CFLAGS="$ac_save_CFLAGS"
319 # this is the suspicious part
322 if test "$ac_sectionLDflags" = "yes"; then
323 SECTION_LDFLAGS='-Wl,--gc-sections'
325 AC_MSG_RESULT($ac_sectionLDflags)
328 # Set linker optimization flags.
329 if test x"$ac_cv_prog_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
330 OPT_LDFLAGS='-Wl,-O1'
333 AC_SUBST(SECTION_LDFLAGS)
334 AC_SUBST(OPT_LDFLAGS)
339 dnl Check to see if the (math function) argument passed is
340 dnl 1) declared when using the c++ compiler
341 dnl 2) has "C" linkage
343 dnl Define HAVE_CARGF etc if "cargf" is declared and links
345 dnl argument 1 is name of function to check
347 dnl ASSUMES argument is a math function with ONE parameter
349 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
350 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
351 AC_MSG_CHECKING([for $1 declaration])
352 if test x${glibcpp_cv_func_$1_use+set} != xset; then
353 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
356 AC_TRY_COMPILE([#include <math.h>],
358 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
362 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
363 if test x$glibcpp_cv_func_$1_use = x"yes"; then
369 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
370 dnl of functions at once. It's an all-or-nothing check -- either
371 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
372 dnl Doing it this way saves significant configure time.
373 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
374 AC_MSG_CHECKING([for $1 functions])
375 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
378 AC_TRY_COMPILE([#include <math.h>],
379 [ `for x in $3; do echo "$x (0);"; done` ],
380 [glibcpp_cv_func_$2_use=yes],
381 [glibcpp_cv_func_$2_use=no])
383 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
384 if test x$glibcpp_cv_func_$2_use = x"yes"; then
390 dnl Check to see if the (math function) argument passed is
391 dnl 1) declared when using the c++ compiler
392 dnl 2) has "C" linkage
394 dnl Define HAVE_CARGF etc if "cargf" is declared and links
396 dnl argument 1 is name of function to check
398 dnl ASSUMES argument is a math function with TWO parameters
400 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
401 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
402 AC_MSG_CHECKING([for $1 declaration])
403 if test x${glibcpp_cv_func_$1_use+set} != xset; then
404 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
407 AC_TRY_COMPILE([#include <math.h>],
409 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
413 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
414 if test x$glibcpp_cv_func_$1_use = x"yes"; then
421 dnl Check to see if the (math function) argument passed is
422 dnl 1) declared when using the c++ compiler
423 dnl 2) has "C" linkage
425 dnl Define HAVE_CARGF etc if "cargf" is declared and links
427 dnl argument 1 is name of function to check
429 dnl ASSUMES argument is a math function with THREE parameters
431 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
432 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
433 AC_MSG_CHECKING([for $1 declaration])
434 if test x${glibcpp_cv_func_$1_use+set} != xset; then
435 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
438 AC_TRY_COMPILE([#include <math.h>],
440 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
444 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
445 if test x$glibcpp_cv_func_$1_use = x"yes"; then
452 dnl Check to see if the (stdlib function) argument passed is
453 dnl 1) declared when using the c++ compiler
454 dnl 2) has "C" linkage
456 dnl Define HAVE_STRTOLD if "strtold" is declared and links
457 dnl Define HAVE_STRTOF if "strtof" is declared and links
459 dnl argument 1 is name of function to check
461 dnl ASSUMES argument is a math function with TWO parameters
463 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
464 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
465 AC_MSG_CHECKING([for $1 declaration])
466 if test x${glibcpp_cv_func_$1_use+set} != xset; then
467 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
470 AC_TRY_COMPILE([#include <stdlib.h>],
472 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
476 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
477 if test x$glibcpp_cv_func_$1_use = x"yes"; then
484 dnl Because the builtins are picky picky picky about the arguments they take,
485 dnl do an explict linkage tests here.
486 dnl Check to see if the (math function) argument passed is
487 dnl 1) declared when using the c++ compiler
488 dnl 2) has "C" linkage
490 dnl Define HAVE_CARGF etc if "cargf" is declared and links
492 dnl argument 1 is name of function to check
494 dnl ASSUMES argument is a math function with ONE parameter
496 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
497 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
498 AC_MSG_CHECKING([for $1 declaration])
499 if test x${glibcpp_cv_func_$1_use+set} != xset; then
500 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
503 AC_TRY_COMPILE([#include <math.h>],
505 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
509 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
510 if test x$glibcpp_cv_func_$1_use = x"yes"; then
511 AC_MSG_CHECKING([for $1 linkage])
512 if test x${glibcpp_cv_func_$1_link+set} != xset; then
513 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
514 AC_TRY_LINK([#include <math.h>],
516 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
519 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
520 if test x$glibcpp_cv_func_$1_link = x"yes"; then
521 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
522 AC_DEFINE_UNQUOTED(${ac_tr_func})
529 dnl Check to see what builtin math functions are supported
531 dnl check for __builtin_abs
532 dnl check for __builtin_fabsf
533 dnl check for __builtin_fabs
534 dnl check for __builtin_fabl
535 dnl check for __builtin_labs
536 dnl check for __builtin_sqrtf
537 dnl check for __builtin_sqrtl
538 dnl check for __builtin_fsqrt
539 dnl check for __builtin_sinf
540 dnl check for __builtin_sin
541 dnl check for __builtin_sinl
542 dnl check for __builtin_cosf
543 dnl check for __builtin_cos
544 dnl check for __builtin_cosl
546 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
547 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
548 dnl Test for builtin math functions.
549 dnl These are made in gcc/c-common.c
550 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
551 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
552 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
553 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
554 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
556 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
557 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
558 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
560 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
561 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
562 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
564 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
565 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
566 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
568 dnl There is, without a doubt, a more elegant way to have these
569 dnl names exported so that they won't be stripped out of acconfig.h by
570 dnl autoheader. I leave this as an exercise to somebody less frustrated
571 dnl than I.... please email the libstdc++ list if you can figure out a
572 dnl more elegant approach (see autoconf/acgen.m4 and specifically
573 dnl AC_CHECK_FUNC for things to steal.)
575 if test x$dummyvar = x"yes"; then
576 AC_DEFINE(HAVE___BUILTIN_ABS)
577 AC_DEFINE(HAVE___BUILTIN_LABS)
578 AC_DEFINE(HAVE___BUILTIN_COS)
579 AC_DEFINE(HAVE___BUILTIN_COSF)
580 AC_DEFINE(HAVE___BUILTIN_COSL)
581 AC_DEFINE(HAVE___BUILTIN_FABS)
582 AC_DEFINE(HAVE___BUILTIN_FABSF)
583 AC_DEFINE(HAVE___BUILTIN_FABSL)
584 AC_DEFINE(HAVE___BUILTIN_SIN)
585 AC_DEFINE(HAVE___BUILTIN_SINF)
586 AC_DEFINE(HAVE___BUILTIN_SINL)
587 AC_DEFINE(HAVE___BUILTIN_FSQRT)
588 AC_DEFINE(HAVE___BUILTIN_SQRTF)
589 AC_DEFINE(HAVE___BUILTIN_SQRTL)
595 dnl Check to see what the underlying c library
596 dnl These checks need to do two things:
597 dnl 1) make sure the name is declared when using the c++ compiler
598 dnl 2) make sure the name has "C" linkage
599 dnl This might seem like overkill but experience has shown that it's not...
601 dnl Define HAVE_STRTOF etc if "strtof" is found.
602 dnl Define HAVE_STRTOLD etc if "strtold" is found.
604 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
605 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
606 ac_test_CXXFLAGS="${CXXFLAGS+set}"
607 ac_save_CXXFLAGS="$CXXFLAGS"
608 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
610 AC_CHECK_FUNCS(strtof)
611 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
613 CXXFLAGS="$ac_save_CXXFLAGS"
618 dnl Check to see what the underlying c library or math library is like.
619 dnl These checks need to do two things:
620 dnl 1) make sure the name is declared when using the c++ compiler
621 dnl 2) make sure the name has "C" linkage
622 dnl This might seem like overkill but experience has shown that it's not...
624 dnl Define HAVE_CARGF etc if "cargf" is found.
626 dnl GLIBCPP_CHECK_MATH_SUPPORT
627 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
628 ac_test_CXXFLAGS="${CXXFLAGS+set}"
629 ac_save_CXXFLAGS="$CXXFLAGS"
630 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
633 AC_CHECK_LIB(m, sin, libm="-lm")
637 dnl Check to see if certain C math functions exist.
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
646 dnl Check to see if basic C math functions have float versions.
647 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
652 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
669 dnl Check to see if basic C math functions have long double versions.
670 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
675 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
683 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
695 dnl Some runtimes have these functions with a preceding underscore. Please
696 dnl keep this sync'd with the one above. And if you add any new symbol,
697 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
698 dnl Check to see if certain C math functions exist.
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
707 dnl Check to see if basic C math functions have float versions.
708 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
710 _acosf _asinf _atanf \
712 _coshf _sinhf _tanhf)
713 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
730 dnl Check to see if basic C math functions have long double versions.
731 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
733 _acosl _asinl _atanl \
735 _coshl _sinhl _tanhl)
736 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
739 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
740 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
741 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
742 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
743 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
744 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
745 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
746 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
747 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
748 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
749 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
750 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
751 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
752 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
753 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
754 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
757 CXXFLAGS="$ac_save_CXXFLAGS"
762 dnl Check to see if there is native support for complex
764 dnl Don't compile bits in math/* if native support exits.
766 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
768 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
769 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
770 dnl Check for complex versions of math functions of platform.
771 AC_CHECK_LIB(m, main)
772 AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf)
774 dnl Compile the long double complex functions only if the function
775 dnl provides the non-complex long double functions that are needed.
776 dnl Currently this includes copysignl and atan2l, which should be
777 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
778 USE_COMPLEX_LONG_DOUBLE=no
779 if test x$ac_cv_func_atan2l = x"yes" \
780 && test x$ac_cv_func_copysignl = x"yes"; then
781 USE_COMPLEX_LONG_DOUBLE=yes
782 AC_REPLACE_MATHFUNCS(hypotl signbitl)
785 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
789 dnl Check to see what architecture and operating system we are compiling
790 dnl for. Also, if architecture- or OS-specific flags are required for
791 dnl compilation, pick them up here.
793 dnl GLIBCPP_CHECK_TARGET
794 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
795 . [$]{glibcpp_basedir}/configure.target
796 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
797 AC_MSG_RESULT(OS config directory is $os_include_dir)
798 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
803 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
804 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
805 dnl must have been previously checked.)
807 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
808 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
810 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
811 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
813 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
814 dnl others even if wchar_t support is not on.
815 AC_MSG_CHECKING([for mbstate_t])
816 AC_TRY_COMPILE([#include <wchar.h>],
817 [mbstate_t teststate;],
818 have_mbstate_t=yes, have_mbstate_t=no)
819 AC_MSG_RESULT($have_mbstate_t)
820 if test x"$have_mbstate_t" = xyes; then
821 AC_DEFINE(HAVE_MBSTATE_T)
824 dnl Sanity check for existence of ISO C99 headers for extended encoding.
825 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
826 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
828 dnl Only continue checking if the ISO C99 headers exist and support is on.
829 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes \
830 && test x"$enable_c_mbchar" != xno; then
832 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
833 dnl numeric_limits can instantiate type_traits<wchar_t>
834 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
835 AC_TRY_COMPILE([#include <wchar.h>],
836 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
837 has_wchar_minmax=yes, has_wchar_minmax=no)
838 AC_MSG_RESULT($has_wchar_minmax)
840 dnl Test wchar.h for WEOF, which is what we use to determine whether
841 dnl to specialize for char_traits<wchar_t> or not.
842 AC_MSG_CHECKING([for WEOF])
845 #include <stddef.h>],
847 has_weof=yes, has_weof=no)
848 AC_MSG_RESULT($has_weof)
850 dnl Tests for wide character functions used in char_traits<wchar_t>.
851 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
852 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
854 AC_MSG_CHECKING([for ISO C99 wchar_t support])
855 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
856 && test x"$ac_wfuncs" = xyes; then
857 ac_isoC99_wchar_t=yes
861 AC_MSG_RESULT($ac_isoC99_wchar_t)
863 dnl Use iconv for wchar_t to char conversions. As such, check for
864 dnl X/Open Portability Guide, version 2 features (XPG2).
865 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
866 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
868 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
869 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
871 LIBS="$LIBS $libiconv"
873 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
874 ac_XPG2funcs=yes, ac_XPG2funcs=no)
878 AC_MSG_CHECKING([for XPG2 wchar_t support])
879 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
880 && test x"$ac_XPG2funcs" = xyes; then
885 AC_MSG_RESULT($ac_XPG2_wchar_t)
887 dnl At the moment, only enable wchar_t specializations if all the
888 dnl above support is present.
889 AC_MSG_CHECKING([for enabled wchar_t specializations])
890 if test x"$ac_isoC99_wchar_t" = xyes \
891 && test x"$ac_XPG2_wchar_t" = xyes; then
892 libinst_wstring_la="libinst-wstring.la"
893 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
896 libinst_wstring_la=""
899 AC_SUBST(libinst_wstring_la)
902 dnl Wide characters disabled by the user.
903 AC_MSG_WARN([wchar_t support disabled.])
909 dnl Check to see if this version of GNU C++ is afflicted by bugs in
910 dnl __complex__ float support.
912 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
914 dnl Check to see if this version of GNU C++ is afflicted by bugs in
915 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
916 dnl gcc-2.95.x when using the library, unless we define the default copy
917 dnl ctor in the specializations of complex<>.
919 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
920 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
921 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
922 AC_REQUIRE([AC_PROG_CXX])
924 AC_MSG_CHECKING([for GNU C++ __complex__ support])
925 AC_CACHE_VAL(glibcpp_cv_complex, [
928 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
929 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
930 [ dcomplex x; f(x); ],
931 glibcpp_cv_complex=ok,
932 glibcpp_cv_complex=buggy
936 AC_MSG_RESULT($glibcpp_cv_complex)
937 if test $glibcpp_cv_complex = buggy; then
938 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
941 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
942 AC_CACHE_VAL(glibcpp_cv_float_complex, [
946 cat > conftest.h <<EOB
948 // Check for buggy __complex__ that causes ICE in most versions of egcs
949 // and gcc-2.95.x on certain platforms (eg., x86-win32).
951 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
952 // more info on the bug itself.
957 __complex__ float m_value;
958 float_complex (float = 0.0f, float = 0.0f);
959 float_complex (__complex__ float val) : m_value (val) {}
960 float_complex foo (const float_complex &val)
961 { return float_complex (~val.m_value); }
964 AC_TRY_COMPILE([#include "conftest.h"], ,
965 glibcpp_cv_float_complex=ok,
966 glibcpp_cv_float_complex=buggy
970 AC_MSG_RESULT($glibcpp_cv_float_complex)
971 if test $glibcpp_cv_float_complex = buggy; then
972 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
978 dnl Check for special debugging mode; not for production use.
980 dnl GLIBCPP_ENABLE_DEBUG
981 dnl --enable-debug sets '-ggdb3 -O0'.
982 dnl --disable-debug sets '-g' and whatever optimization options the
983 dnl compiler can handle.
984 dnl + --enable-maintainer-mode automatically defaults this to on.
985 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
986 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
987 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
988 dnl defaults to `no'.
989 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
990 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
992 changequote(<<, >>)dnl
993 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
995 [case "${enableval}" in
996 yes) enable_debug=yes ;;
997 no) enable_debug=no ;;
998 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1000 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1002 dnl Option parsed, now set things appropriately
1003 case "${enable_debug}" in
1005 DEBUG_FLAGS='-O0 -ggdb3'
1011 AC_SUBST(DEBUG_FLAGS)
1016 dnl Check for "unusual" flags to pass to the compiler while building.
1018 dnl GLIBCPP_ENABLE_CXX_FLAGS
1019 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1020 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1021 dnl Somehow this same set of flags must be passed when [re]building
1023 dnl --disable-cxx-flags passes nothing.
1024 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1025 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1026 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1027 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1028 dnl If "default flags" is an empty string (or "none"), the effect is
1029 dnl the same as --disable or --enable=no.
1030 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1031 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1032 AC_ARG_ENABLE(cxx-flags,
1033 changequote(<<, >>)dnl
1034 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1035 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1036 changequote([, ])dnl
1037 [case "x$enableval" in
1039 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1041 enable_cxx_flags='' ;;
1043 enable_cxx_flags="$enableval" ;;
1045 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1047 dnl Thinko on my part during design. This kludge is the workaround.
1048 if test "$enable_cxx_flags" = "none"; then
1049 enable_cxx_flags='';
1052 dnl Run through flags (either default or command-line) and set anything
1053 dnl extra (e.g., #defines) that must accompany particular g++ options.
1054 if test -n "$enable_cxx_flags"; then
1055 for f in $enable_cxx_flags; do
1059 *) # and we're trying to pass /what/ exactly?
1060 AC_MSG_ERROR([compiler flags start with a -]) ;;
1064 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1065 AC_SUBST(EXTRA_CXX_FLAGS)
1070 dnl Check for which locale library to use: gnu or generic.
1072 dnl GLIBCPP_ENABLE_CLOCALE
1073 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
1074 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
1076 dnl default is generic
1078 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1079 AC_MSG_CHECKING([for clocale to use])
1080 AC_ARG_ENABLE(clocale,
1081 [ --enable-clocale enable model for target locale package.
1082 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1084 if test x$enable_clocale = xno; then
1085 enable_clocale=generic
1087 enable_clocale=generic)
1089 enable_clocale_flag=$enable_clocale
1091 dnl Check if a valid locale package
1092 case x${enable_clocale_flag} in
1094 CLOCALE_H=config/c_locale_gnu.h
1095 CLOCALE_CC=config/c_locale_gnu.cc
1099 CLOCALE_H=config/c_locale_generic.h
1100 CLOCALE_CC=config/c_locale_generic.cc
1101 AC_MSG_RESULT(generic)
1104 echo "$enable_clocale is an unknown locale package" 1>&2
1109 AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h)
1110 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1115 dnl Check for which I/O library to use: libio, or something specific.
1117 dnl GLIBCPP_ENABLE_CSTDIO
1118 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1120 dnl default is stdio
1122 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1123 AC_MSG_CHECKING([for cstdio to use])
1124 AC_ARG_ENABLE(cstdio,
1125 [ --enable-cstdio enable stdio for target io package.
1126 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1128 if test x$enable_cstdio = xno; then
1131 enable_cstdio=stdio)
1133 enable_cstdio_flag=$enable_cstdio
1135 dnl Check if a valid I/O package
1136 case x${enable_cstdio_flag} in
1138 CSTDIO_H=config/c_io_libio.h
1139 CSTDIO_CC=config/c_io_libio.cc
1140 AC_MSG_RESULT(libio)
1142 # see if we are on a system with libio native (ie, linux)
1143 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1145 # Need to check and see what version of glibc is being used. If
1146 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1147 # compile most of libio for linux systems.
1148 if test x$has_libio = x"yes"; then
1151 AC_MSG_CHECKING([for glibc version >= 2.2])
1152 AC_EGREP_CPP([ok], [
1153 #include <features.h>
1154 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1157 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1158 AC_MSG_RESULT($glibc_satisfactory)
1162 # XXX at the moment, admit defeat and force the recompilation
1163 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1164 glibc_satisfactory=no
1166 if test x$glibc_satisfactory = x"yes"; then
1171 # bkoz XXX need to add checks to enable this
1172 # pme XXX here's a first pass at such a check
1173 if test x$enable_c_mbchar != xno; then
1181 # Using libio, but <libio.h> doesn't exist on the target system. . .
1183 # bkoz XXX need to add checks to enable this
1184 # pme XXX here's a first pass at such a check
1185 if test x$enable_c_mbchar != xno; then
1192 xstdio | x | xno | xnone | xyes)
1194 CSTDIO_H=config/c_io_stdio.h
1195 CSTDIO_CC=config/c_io_stdio.cc
1196 AC_MSG_RESULT(stdio)
1198 # We're not using stdio.
1201 # Wide characters are not supported with this package.
1205 echo "$enable_cstdio is an unknown io package" 1>&2
1209 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1210 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1212 # 2000-08-04 bkoz hack
1213 CCODECVT_C=config/c_io_libio_codecvt.c
1214 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1215 # 2000-08-04 bkoz hack
1217 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1218 test "$need_libio" = yes || test "$need_wlibio" = yes)
1219 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1220 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1221 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1222 libio_la=../libio/libio.la
1231 dnl Check for which threading library to use.
1233 dnl GLIBCPP_ENABLE_THREADS
1234 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1236 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1237 dnl libio. Any actual thread package will enable it.
1239 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1240 dnl Note this comes from the gcc/config.in and libjava/config.in
1241 dnl Efforts should be made to keep this in sync.
1242 AC_MSG_CHECKING([for threads package to use])
1243 AC_ARG_ENABLE(threads,
1244 [ --enable-threads enable thread usage for target GCC.
1245 --enable-threads=LIB use LIB thread package for target GCC. [default=no]
1247 if test x$enable_threads = xno; then
1252 enable_threads_flag=$enable_threads
1254 dnl Check if a valid thread package
1255 case x${enable_threads_flag} in
1258 target_thread_file='single'
1262 target_thread_file='posix'
1264 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1265 xsolaris | xwin32 | xdce | xvxworks)
1266 target_thread_file=$enable_threads_flag
1269 echo "$enable_threads is an unknown thread package" 1>&2
1274 dnl Check for thread package actually supported in libstdc++
1276 case "$target_thread_file" in
1278 THREADH=threads-no.h
1281 THREADH=threads-posix.h
1283 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1284 AC_MSG_ERROR(thread package $THREADS not yet supported)
1287 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1290 AC_MSG_RESULT($THREADH)
1292 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1293 if test $THREADH != threads-no.h; then
1294 AC_DEFINE(_GLIBCPP_USE_THREADS)
1300 dnl Check for template specializations for the 'long long' type extension.
1302 dnl GLIBCPP_ENABLE_LONG_LONG
1303 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1304 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1305 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1306 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1307 dnl defaults to `no'.
1308 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1310 dnl GLIBCPP_ENABLE_LONG_LONG
1311 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1312 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1314 AC_ARG_ENABLE(long-long,
1315 changequote(<<, >>)dnl
1316 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1317 changequote([, ])dnl
1318 [case "$enableval" in
1319 yes) enable_long_long=yes ;;
1320 no) enable_long_long=no ;;
1321 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1323 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1325 # Allow use of os-dependent settings, so that macros that turn on
1326 # C99 capabilities can be defined and used in a consistent way.
1327 OS_INC_PATH=${srcdir}/$os_include_dir
1328 ac_test_CFLAGS="${CFLAGS+set}"
1329 ac_save_CFLAGS="$CFLAGS"
1330 CFLAGS="-I$OS_INC_PATH"
1332 # Check for the existence of functions used if long long is enabled.
1333 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1334 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1336 # Check for lldiv_t, et. al.
1337 AC_MSG_CHECKING([for lldiv_t declaration])
1338 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1339 AC_TRY_COMPILE([#include <bits/os_defines.h>
1340 #include <stdlib.h>],
1342 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1344 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1345 if test x$glibcpp_lldiv_t_use = x"yes"; then
1346 AC_DEFINE(HAVE_LLDIV_T)
1349 AC_MSG_CHECKING([for enabled long long])
1350 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1351 enable_long_long=no;
1353 AC_MSG_RESULT($enable_long_long)
1355 # Option parsed, now set things appropriately
1356 if test x"$enable_long_long" = xyes; then
1357 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1361 CFLAGS="$ac_save_CFLAGS"
1366 dnl Check for what kind of C headers to use.
1368 dnl GLIBCPP_ENABLE_CHEADERS
1369 dnl --enable-cheaders= [does stuff].
1370 dnl --disable-cheaders [does not do anything, really].
1371 dnl + This will eventually need to be 'c_shadow' by default.
1372 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1373 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1374 dnl If ommitted, it defaults to `c_std'.
1375 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1376 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1377 AC_MSG_CHECKING([for c header strategy to use])
1378 AC_ARG_ENABLE(cheaders,
1379 changequote(<<, >>)dnl
1380 << --enable-cheaders construct "C" header files for
1381 g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1383 [case "$enableval" in
1388 enable_cheaders=c_std
1391 enable_cheaders=c_shadow
1393 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1396 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1397 AC_MSG_RESULT($enable_cheaders)
1399 dnl Option parsed, now set things appropriately
1400 case "$enable_cheaders" in
1402 CSHADOW_FLAGS="-fno-builtin"
1403 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1404 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1408 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1412 C_INCLUDE_DIR='${top_srcdir}/include/c'
1416 AC_SUBST(CSHADOW_FLAGS)
1417 AC_SUBST(C_INCLUDE_DIR)
1418 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1423 dnl Check for wide character support. Has the same effect as the option
1424 dnl in gcc's configure, but in a form that autoconf can mess with.
1426 dnl GLIBCPP_ENABLE_C_MBCHAR
1427 dnl --enable-c-mbchar requests all the wchar_t stuff.
1428 dnl --disable-c-mbchar doesn't.
1429 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1430 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1431 dnl defaults to `no'.
1432 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1433 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1434 AC_ARG_ENABLE(c-mbchar,
1435 changequote(<<, >>)dnl
1436 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1437 changequote([, ])dnl
1438 [case "$enableval" in
1439 yes) enable_c_mbchar=yes ;;
1440 no) enable_c_mbchar=no ;;
1441 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1443 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1444 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1449 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1451 dnl GLIBCPP_INCLUDE_DIR
1453 dnl TOPLEVEL_INCLUDES
1454 dnl LIBMATH_INCLUDES
1455 dnl LIBSUPCXX_INCLUDES
1457 dnl CSHADOW_INCLUDES
1459 dnl GLIBCPP_EXPORT_INCLUDE
1460 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1461 # Root level of the include sources.
1462 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1464 # Can either use include/c or include/c_std to grab "C" headers. This
1465 # variable is set to the include directory currently in use.
1466 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1468 # Passed down for canadian crosses.
1469 if test x"$CANADIAN" = xyes; then
1470 TOPLEVEL_INCLUDES='-I$(includedir)'
1473 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1475 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1477 #if GLIBCPP_NEED_LIBIO
1478 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1480 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1483 #if GLIBCPP_USE_CSHADOW
1484 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1485 # -I$(top_blddir)/cshadow'
1487 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1490 # Now, export this to all the little Makefiles....
1491 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1492 AC_SUBST(TOPLEVEL_INCLUDES)
1493 AC_SUBST(LIBMATH_INCLUDES)
1494 AC_SUBST(LIBSUPCXX_INCLUDES)
1495 AC_SUBST(LIBIO_INCLUDES)
1496 AC_SUBST(CSTD_INCLUDES)
1501 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1503 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1504 # Optimization flags that are probably a good idea for thrill-seekers. Just
1505 # uncomment the lines below and make, everything else is ready to go...
1506 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1508 AC_SUBST(OPTIMIZE_CXXFLAGS)
1510 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1511 AC_SUBST(WARN_FLAGS)
1515 # Check whether LC_MESSAGES is available in <locale.h>.
1516 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1518 # This file file be copied and used freely without restrictions. It can
1519 # be used in projects which are not available under the GNU Public License
1520 # but which still want to provide support for the GNU gettext functionality.
1521 # Please note that the actual code is *not* freely available.
1525 AC_DEFUN(AC_LC_MESSAGES, [
1526 AC_CHECK_HEADER(locale.h, [
1527 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1528 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1529 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1530 if test $ac_cv_val_LC_MESSAGES = yes; then
1531 AC_DEFINE(HAVE_LC_MESSAGES)
1537 # Check for functions in math library.
1538 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1540 # This file can be copied and used freely without restrictions. It can
1541 # be used in projects which are not available under the GNU Public License
1542 # but which still want to provide support for the GNU gettext functionality.
1543 # Please note that the actual code is *not* freely available.
1547 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1548 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1549 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1550 AC_SUBST(LIBMATHOBJS)dnl
1554 # Check for string functions.
1555 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1557 # This file can be copied and used freely without restrictions. It can
1558 # be used in projects which are not available under the GNU Public License
1559 # but which still want to provide support for the GNU gettext functionality.
1560 # Please note that the actual code is *not* freely available.
1564 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1565 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1566 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1567 AC_SUBST(LIBSTRINGOBJS)dnl
1571 dnl This macro searches for a GNU version of make. If a match is found, the
1572 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1573 dnl set to "#". This is useful for including a special features in a Makefile,
1574 dnl which cannot be handled by other versions of make. The variable
1575 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1576 dnl the empty string otherwise.
1578 dnl Here is an example of its use:
1580 dnl Makefile.in might contain:
1582 dnl # A failsafe way of putting a dependency rule into a makefile
1584 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1586 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1587 dnl @ifGNUmake@ include $(DEPEND)
1588 dnl @ifGNUmake@ endif
1590 dnl Then configure.in would normally contain:
1592 dnl CHECK_GNU_MAKE()
1593 dnl AC_OUTPUT(Makefile)
1595 dnl Then perhaps to cause gnu make to override any other make, we could do
1596 dnl something like this (note that GNU make always looks for GNUmakefile first):
1598 dnl if ! test x$_cv_gnu_make_command = x ; then
1599 dnl mv Makefile GNUmakefile
1600 dnl echo .DEFAULT: > Makefile ;
1601 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1604 dnl Then, if any (well almost any) other make is called, and GNU make also
1605 dnl exists, then the other make wraps the GNU make.
1607 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1608 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1610 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1611 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1612 dnl #### conditional's subshell (" --version" is not a command), using a
1613 dnl #### different option to grep(1).
1615 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1616 dnl #### ${MAKE:-make}).
1619 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1620 _cv_gnu_make_command='' ;
1621 dnl Search all the common names for GNU make
1622 for a in "${MAKE-make}" make gmake gnumake ; do
1623 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1625 _cv_gnu_make_command=$a ;
1630 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1631 dnl string, '#' otherwise
1632 if test "x$_cv_gnu_make_command" != "x" ; then
1640 sinclude(../libtool.m4)
1641 dnl The lines below arrange for aclocal not to bring an installed
1642 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1643 dnl add a definition of LIBTOOL to Makefile.in.
1644 ifelse(,,,[AC_SUBST(LIBTOOL)
1645 AC_DEFUN([AM_PROG_LIBTOOL])
1646 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1647 AC_DEFUN([AC_PROG_LD])
1651 # Do all the work for Automake. This macro actually does too much --
1652 # some checks are only needed if your package does certain things.
1653 # But this isn't really a big deal.
1658 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1660 AC_DEFUN(AM_INIT_AUTOMAKE,
1661 [AC_REQUIRE([AC_PROG_INSTALL])
1666 dnl test to see if srcdir already configured
1667 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1668 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1671 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1672 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1673 AC_REQUIRE([AM_SANITY_CHECK])
1674 AC_REQUIRE([AC_ARG_PROGRAM])
1675 dnl FIXME This is truly gross.
1676 missing_dir=`cd $ac_aux_dir && pwd`
1677 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1678 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1679 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1680 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1681 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1682 AC_REQUIRE([AC_PROG_MAKE_SET])])
1685 # Check to make sure that the build environment is sane.
1688 AC_DEFUN(AM_SANITY_CHECK,
1689 [AC_MSG_CHECKING([whether build environment is sane])
1692 echo timestamp > conftestfile
1693 # Do `set' in a subshell so we don't clobber the current shell's
1694 # arguments. Must try -L first in case configure is actually a
1695 # symlink; some systems play weird games with the mod time of symlinks
1696 # (eg FreeBSD returns the mod time of the symlink's containing
1699 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1700 if test "[$]*" = "X"; then
1702 set X `ls -t $srcdir/configure conftestfile`
1704 if test "[$]*" != "X $srcdir/configure conftestfile" \
1705 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1707 # If neither matched, then we have a broken ls. This can happen
1708 # if, for instance, CONFIG_SHELL is bash and it inherits a
1709 # broken ls alias from the environment. This has actually
1710 # happened. Such a system could not be considered "sane".
1711 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1712 alias in your environment])
1715 test "[$]2" = conftestfile
1721 AC_MSG_ERROR([newly created file is older than distributed files!
1722 Check your system clock])
1725 AC_MSG_RESULT(yes)])
1727 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1728 dnl The program must properly implement --version.
1729 AC_DEFUN(AM_MISSING_PROG,
1730 [AC_MSG_CHECKING(for working $2)
1731 # Run test in a subshell; some versions of sh will print an error if
1732 # an executable is not found, even if stderr is redirected.
1733 # Redirect stdin to placate older versions of autoconf. Sigh.
1734 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1736 AC_MSG_RESULT(found)
1739 AC_MSG_RESULT(missing)
1743 # Add --enable-maintainer-mode option to configure.
1748 AC_DEFUN(AM_MAINTAINER_MODE,
1749 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1750 dnl maintainer-mode is disabled by default
1751 AC_ARG_ENABLE(maintainer-mode,
1752 [ --enable-maintainer-mode enable make rules and dependencies not useful
1753 (and sometimes confusing) to the casual installer],
1754 USE_MAINTAINER_MODE=$enableval,
1755 USE_MAINTAINER_MODE=no)
1756 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1757 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1758 MAINT=$MAINTAINER_MODE_TRUE
1763 # Define a conditional.
1765 AC_DEFUN(AM_CONDITIONAL,
1776 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1778 AC_DEFUN(AM_CONFIG_HEADER,
1780 AC_CONFIG_HEADER([$1])
1781 dnl When config.status generates a header, we must update the stamp-h file.
1782 dnl This file resides in the same directory as the config header
1783 dnl that is generated. We must strip everything past the first ":",
1784 dnl and everything past the last "/".
1785 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1786 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1787 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1789 for am_file in <<$1>>; do
1790 case " <<$>>CONFIG_HEADERS " in
1791 *" <<$>>am_file "*<<)>>
1792 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1795 am_indx=`expr "<<$>>am_indx" + 1`