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
370 dnl Check to see if the (math function) argument passed is
371 dnl 1) declared when using the c++ compiler
372 dnl 2) has "C" linkage
374 dnl Define HAVE_CARGF etc if "cargf" is declared and links
376 dnl argument 1 is name of function to check
378 dnl ASSUMES argument is a math function with TWO parameters
380 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
381 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
382 AC_MSG_CHECKING([for $1 declaration])
383 if test x${glibcpp_cv_func_$1_use+set} != xset; then
384 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
387 AC_TRY_COMPILE([#include <math.h>],
389 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
393 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
394 if test x$glibcpp_cv_func_$1_use = x"yes"; then
401 dnl Check to see if the (math function) argument passed is
402 dnl 1) declared when using the c++ compiler
403 dnl 2) has "C" linkage
405 dnl Define HAVE_CARGF etc if "cargf" is declared and links
407 dnl argument 1 is name of function to check
409 dnl ASSUMES argument is a math function with THREE parameters
411 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
412 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
413 AC_MSG_CHECKING([for $1 declaration])
414 if test x${glibcpp_cv_func_$1_use+set} != xset; then
415 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
418 AC_TRY_COMPILE([#include <math.h>],
420 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
424 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
425 if test x$glibcpp_cv_func_$1_use = x"yes"; then
432 dnl Check to see if the (stdlib function) argument passed is
433 dnl 1) declared when using the c++ compiler
434 dnl 2) has "C" linkage
436 dnl Define HAVE_STRTOLD if "strtold" is declared and links
437 dnl Define HAVE_STRTOF if "strtof" is declared and links
439 dnl argument 1 is name of function to check
441 dnl ASSUMES argument is a math function with TWO parameters
443 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
444 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
445 AC_MSG_CHECKING([for $1 declaration])
446 if test x${glibcpp_cv_func_$1_use+set} != xset; then
447 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
450 AC_TRY_COMPILE([#include <stdlib.h>],
452 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
456 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
457 if test x$glibcpp_cv_func_$1_use = x"yes"; then
464 dnl Because the builtins are picky picky picky about the arguments they take,
465 dnl do an explict linkage tests here.
466 dnl Check to see if the (math function) argument passed is
467 dnl 1) declared when using the c++ compiler
468 dnl 2) has "C" linkage
470 dnl Define HAVE_CARGF etc if "cargf" is declared and links
472 dnl argument 1 is name of function to check
474 dnl ASSUMES argument is a math function with ONE parameter
476 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
477 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
478 AC_MSG_CHECKING([for $1 declaration])
479 if test x${glibcpp_cv_func_$1_use+set} != xset; then
480 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
483 AC_TRY_COMPILE([#include <math.h>],
485 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
489 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
490 if test x$glibcpp_cv_func_$1_use = x"yes"; then
491 AC_MSG_CHECKING([for $1 linkage])
492 if test x${glibcpp_cv_func_$1_link+set} != xset; then
493 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
494 AC_TRY_LINK([#include <math.h>],
496 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
499 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
500 if test x$glibcpp_cv_func_$1_link = x"yes"; then
501 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
502 AC_DEFINE_UNQUOTED(${ac_tr_func})
509 dnl Check to see what builtin math functions are supported
511 dnl check for __builtin_abs
512 dnl check for __builtin_fabsf
513 dnl check for __builtin_fabs
514 dnl check for __builtin_fabl
515 dnl check for __builtin_labs
516 dnl check for __builtin_sqrtf
517 dnl check for __builtin_sqrtl
518 dnl check for __builtin_fsqrt
519 dnl check for __builtin_sinf
520 dnl check for __builtin_sin
521 dnl check for __builtin_sinl
522 dnl check for __builtin_cosf
523 dnl check for __builtin_cos
524 dnl check for __builtin_cosl
526 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
527 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
528 dnl Test for builtin math functions.
529 dnl These are made in gcc/c-common.c
530 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
531 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
532 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
533 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
534 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
536 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
537 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
538 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
540 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
541 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
542 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
544 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
545 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
546 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
548 dnl There is, without a doubt, a more elegant way to have these
549 dnl names exported so that they won't be stripped out of acconfig.h by
550 dnl autoheader. I leave this as an exercise to somebody less frustrated
551 dnl than I.... please email the libstdc++ list if you can figure out a
552 dnl more elegant approach (see autoconf/acgen.m4 and specifically
553 dnl AC_CHECK_FUNC for things to steal.)
555 if test x$dummyvar = x"yes"; then
556 AC_DEFINE(HAVE___BUILTIN_ABS)
557 AC_DEFINE(HAVE___BUILTIN_LABS)
558 AC_DEFINE(HAVE___BUILTIN_COS)
559 AC_DEFINE(HAVE___BUILTIN_COSF)
560 AC_DEFINE(HAVE___BUILTIN_COSL)
561 AC_DEFINE(HAVE___BUILTIN_FABS)
562 AC_DEFINE(HAVE___BUILTIN_FABSF)
563 AC_DEFINE(HAVE___BUILTIN_FABSL)
564 AC_DEFINE(HAVE___BUILTIN_SIN)
565 AC_DEFINE(HAVE___BUILTIN_SINF)
566 AC_DEFINE(HAVE___BUILTIN_SINL)
567 AC_DEFINE(HAVE___BUILTIN_FSQRT)
568 AC_DEFINE(HAVE___BUILTIN_SQRTF)
569 AC_DEFINE(HAVE___BUILTIN_SQRTL)
575 dnl Check to see what the underlying c library
576 dnl These checks need to do two things:
577 dnl 1) make sure the name is declared when using the c++ compiler
578 dnl 2) make sure the name has "C" linkage
579 dnl This might seem like overkill but experience has shown that it's not...
581 dnl Define HAVE_STRTOF etc if "strtof" is found.
582 dnl Define HAVE_STRTOLD etc if "strtold" is found.
584 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
585 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
586 ac_test_CXXFLAGS="${CXXFLAGS+set}"
587 ac_save_CXXFLAGS="$CXXFLAGS"
588 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
590 AC_CHECK_FUNCS(strtof)
591 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
593 CXXFLAGS="$ac_save_CXXFLAGS"
598 dnl Check to see what the underlying c library or math library is like.
599 dnl These checks need to do two things:
600 dnl 1) make sure the name is declared when using the c++ compiler
601 dnl 2) make sure the name has "C" linkage
602 dnl This might seem like overkill but experience has shown that it's not...
604 dnl Define HAVE_CARGF etc if "cargf" is found.
606 dnl GLIBCPP_CHECK_MATH_SUPPORT
607 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
608 ac_test_CXXFLAGS="${CXXFLAGS+set}"
609 ac_save_CXXFLAGS="$CXXFLAGS"
610 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
613 AC_CHECK_LIB(m, sin, libm="-lm")
617 dnl Check to see if certain C math functions exist.
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
626 dnl Check to see if basic C math functions have float versions.
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
652 dnl Check to see if basic C math functions have long double versions.
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
681 dnl Some runtimes have these functions with a preceding underscore. Please
682 dnl keep this sync'd with the one above. And if you add any new symbol,
683 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
684 dnl Check to see if certain C math functions exist.
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
693 dnl Check to see if basic C math functions have float versions.
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
719 dnl Check to see if basic C math functions have long double versions.
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
735 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
736 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
737 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
738 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
739 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
740 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
741 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
742 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
743 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
744 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
745 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
746 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
749 CXXFLAGS="$ac_save_CXXFLAGS"
754 dnl Check to see if there is native support for complex
756 dnl Don't compile bits in math/* if native support exits.
758 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
760 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
761 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
762 dnl Check for complex versions of math functions of platform.
763 AC_CHECK_LIB(m, main)
764 AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf)
766 dnl Compile the long double complex functions only if the function
767 dnl provides the non-complex long double functions that are needed.
768 dnl Currently this includes copysignl and atan2l, which should be
769 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
770 USE_COMPLEX_LONG_DOUBLE=no
771 if test x$ac_cv_func_atan2l = x"yes" \
772 && test x$ac_cv_func_copysignl = x"yes"; then
773 USE_COMPLEX_LONG_DOUBLE=yes
774 AC_REPLACE_MATHFUNCS(hypotl signbitl)
777 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
781 dnl Check to see what architecture and operating system we are compiling
782 dnl for. Also, if architecture- or OS-specific flags are required for
783 dnl compilation, pick them up here.
785 dnl GLIBCPP_CHECK_TARGET
786 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
787 . [$]{glibcpp_basedir}/configure.target
788 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
789 AC_MSG_RESULT(OS config directory is $os_include_dir)
790 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
795 dnl Check to see what the underlying c library's interface to ctype looks
796 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
797 dnl stuff makes sure the right bits from the clibrary get called.
799 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
800 dnl Depending on what is found, select various configure/*/ctype.cc
802 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
803 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
804 AC_CHECK_HEADER(ctype.h, [
806 dnl If doesn't match any specified, go with defaults.
809 dnl Test for <ctype> functionality -- GNU/Linux
810 AC_MSG_CHECKING([<ctype> for GNU/Linux])
811 AC_TRY_COMPILE([#include <ctype.h>],
814 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
815 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
816 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
817 ctype_linux=yes, ctype_linux=no)
818 AC_MSG_RESULT($ctype_linux)
819 if test $ctype_linux = "yes"; then
820 ctype_include_dir="config/os/gnu-linux"
824 dnl Test for <ctype> functionality -- FreeBSD 4.0
825 if test $ctype_default = "yes"; then
826 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
827 AC_TRY_COMPILE([#include <ctype.h>],
830 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
831 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
832 ctype_bsd=yes, ctype_bsd=no)
833 AC_MSG_RESULT($ctype_bsd)
834 if test $ctype_bsd = "yes"; then
835 ctype_include_dir="config/os/bsd/freebsd"
840 dnl Test for <ctype> functionality -- FreeBSD 3.4
841 if test $ctype_default = "yes"; then
842 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
843 AC_TRY_COMPILE([#include <ctype.h>],
846 { return _S + _R + _C + _U + _L + _A \
847 + _D + _P + _X + _G + __istype (a, 0);}], \
848 ctype_freebsd34=yes, ctype_freebsd34=no)
849 AC_MSG_RESULT($ctype_freebsd34)
850 if test $ctype_freebsd34 = "yes"; then
851 ctype_include_dir="config/os/bsd/freebsd"
856 dnl Test for <ctype> functionality -- NetBSD
857 if test $ctype_default = "yes"; then
858 AC_MSG_CHECKING([<ctype> for NetBSD])
859 AC_TRY_COMPILE([#include <ctype.h>],
862 { return _S + _C + _U + _L \
863 + _N + _P + _X + _tolower_tab_[a] + _toupper_tab_[a];}], \
864 ctype_netbsd=yes, ctype_netbsd=no)
865 AC_MSG_RESULT($ctype_netbsd)
866 if test $ctype_netbsd = "yes"; then
867 ctype_include_dir="config/os/bsd/netbsd"
872 dnl Test for <ctype> functionality -- Solaris 2.6 and up
873 if test $ctype_default = "yes"; then
874 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
875 AC_TRY_COMPILE([#include <ctype.h>],
878 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
879 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
880 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
881 ctype_solaris=yes, ctype_solaris=no)
882 AC_MSG_RESULT($ctype_solaris)
884 if test $ctype_solaris = "yes"; then
885 AC_MSG_CHECKING([ for version])
887 AC_TRY_COMPILE([#include <ctype.h>],
888 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
889 ctype_solaris26=yes, ctype_solaris26=no)
891 if test $ctype_solaris26 = "yes"; then
892 ctype_include_dir="config/os/solaris/solaris2.6"
893 AC_MSG_RESULT([Solaris 2.6])
896 ctype_include_dir="config/os/solaris/solaris2.7"
897 AC_MSG_RESULT([Solaris 7,8])
903 dnl Test for <ctype> functionality -- Solaris 2.5.1
904 if test $ctype_default = "yes"; then
905 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
906 AC_TRY_COMPILE([#include <ctype.h>],
909 { return _U + _L + _N + _S + _P + _C + _X + _B \
911 ctype_solaris25=yes, ctype_solaris25=no)
912 AC_MSG_RESULT($ctype_solaris25)
913 if test $ctype_solaris25 = "yes"; then
914 ctype_include_dir="config/os/solaris/solaris2.5"
919 dnl Test for <ctype> functionality -- AIX
920 if test $ctype_default = "yes"; then
921 AC_MSG_CHECKING([<ctype> for AIX])
922 AC_TRY_COMPILE([#include <ctype.h>],
925 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
926 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
927 + _VALC('a') + _IS('c', 0);}], \
928 ctype_aix=yes, ctype_aix=no)
929 AC_MSG_RESULT($ctype_aix)
930 if test $ctype_aix = "yes"; then
931 ctype_include_dir="config/os/aix"
936 dnl Test for <ctype> functionality -- IRIX
937 if test $ctype_default = "yes"; then
938 AC_MSG_CHECKING([<ctype> for IRIX])
939 AC_TRY_COMPILE([#include <ctype.h>],
942 { return _U + _L + _N + _S + _P + _C + _B + _X + \
943 _A + _PR + _G + _BL;}], \
944 ctype_irix=yes, ctype_irix=no)
945 AC_MSG_RESULT($ctype_irix)
946 if test $ctype_irix = "yes"; then
947 ctype_include_dir="config/os/irix"
952 dnl Test for <ctype> functionality -- newlib
953 if test $ctype_default = "yes"; then
954 AC_MSG_CHECKING([<ctype> for newlib])
955 AC_TRY_COMPILE([#include <ctype.h>],
958 { return _U + _L + _N + _S + _P + _C + _X + _B \
960 ctype_newlib=yes, ctype_newlib=no)
961 AC_MSG_RESULT($ctype_newlib)
962 if test $ctype_newlib = "yes"; then
963 ctype_include_dir="config/os/newlib"
968 dnl Test for <ctype> functionality -- DJGPP
969 dnl FIXME: this test won't work if __dj_ENFORCE_FUNCTION_CALLS
971 if test $ctype_default = "yes"; then
972 AC_MSG_CHECKING([<ctype> for DJGPP])
973 AC_TRY_COMPILE([#include <ctype.h>],
976 { return __dj_ctype_flags[0] + __dj_ctype_flags[1];}], \
977 ctype_djgpp=yes, ctype_djgpp=no)
978 AC_MSG_RESULT($ctype_djgpp)
979 if test $ctype_djgpp = "yes"; then
980 ctype_include_dir="config/os/djgpp"
985 if test $ctype_default = "yes"; then
986 ctype_include_dir="config/os/generic"
987 AC_MSG_WARN("Using default ctype headers.")
994 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
995 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
996 dnl must have been previously checked.)
998 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
999 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
1001 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
1002 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
1004 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
1005 dnl others even if wchar_t support is not on.
1006 AC_MSG_CHECKING([for mbstate_t])
1007 AC_TRY_COMPILE([#include <wchar.h>],
1008 [mbstate_t teststate;],
1009 have_mbstate_t=yes, have_mbstate_t=no)
1010 AC_MSG_RESULT($have_mbstate_t)
1011 if test x"$have_mbstate_t" = xyes; then
1012 AC_DEFINE(HAVE_MBSTATE_T)
1015 dnl Sanity check for existence of ISO C99 headers for extended encoding.
1016 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
1017 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
1019 dnl Only continue checking if the ISO C99 headers exist and support is on.
1020 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes \
1021 && test x"$enable_c_mbchar" != xno; then
1023 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
1024 dnl numeric_limits can instantiate type_traits<wchar_t>
1025 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
1026 AC_TRY_COMPILE([#include <wchar.h>],
1027 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
1028 has_wchar_minmax=yes, has_wchar_minmax=no)
1029 AC_MSG_RESULT($has_wchar_minmax)
1031 dnl Test wchar.h for WEOF, which is what we use to determine whether
1032 dnl to specialize for char_traits<wchar_t> or not.
1033 AC_MSG_CHECKING([for WEOF])
1036 #include <stddef.h>],
1038 has_weof=yes, has_weof=no)
1039 AC_MSG_RESULT($has_weof)
1041 dnl Tests for wide character functions used in char_traits<wchar_t>.
1042 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1043 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1045 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1046 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1047 && test x"$ac_wfuncs" = xyes; then
1048 ac_isoC99_wchar_t=yes
1050 ac_isoC99_wchar_t=no
1052 AC_MSG_RESULT($ac_isoC99_wchar_t)
1054 dnl Use iconv for wchar_t to char conversions. As such, check for
1055 dnl X/Open Portability Guide, version 2 features (XPG2).
1056 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1057 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1059 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1060 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1061 ac_save_LIBS="$LIBS"
1062 LIBS="$LIBS $libiconv"
1064 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1065 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1067 LIBS="$ac_save_LIBS"
1069 AC_MSG_CHECKING([for XPG2 wchar_t support])
1070 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1071 && test x"$ac_XPG2funcs" = xyes; then
1076 AC_MSG_RESULT($ac_XPG2_wchar_t)
1078 dnl At the moment, only enable wchar_t specializations if all the
1079 dnl above support is present.
1080 AC_MSG_CHECKING([for enabled wchar_t specializations])
1081 if test x"$ac_isoC99_wchar_t" = xyes \
1082 && test x"$ac_XPG2_wchar_t" = xyes; then
1083 libinst_wstring_la="libinst-wstring.la"
1084 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1085 AC_MSG_RESULT("yes")
1087 libinst_wstring_la=""
1090 AC_SUBST(libinst_wstring_la)
1093 dnl Wide characters disabled by the user.
1094 AC_MSG_WARN([wchar_t support disabled.])
1100 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1101 dnl __complex__ float support.
1103 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1105 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1106 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1107 dnl gcc-2.95.x when using the library, unless we define the default copy
1108 dnl ctor in the specializations of complex<>.
1110 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1111 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1112 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1113 AC_REQUIRE([AC_PROG_CXX])
1115 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1116 AC_CACHE_VAL(glibcpp_cv_complex, [
1119 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1120 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1121 [ dcomplex x; f(x); ],
1122 glibcpp_cv_complex=ok,
1123 glibcpp_cv_complex=buggy
1127 AC_MSG_RESULT($glibcpp_cv_complex)
1128 if test $glibcpp_cv_complex = buggy; then
1129 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1132 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1133 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1137 cat > conftest.h <<EOB
1139 // Check for buggy __complex__ that causes ICE in most versions of egcs
1140 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1142 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1143 // more info on the bug itself.
1148 __complex__ float m_value;
1149 float_complex (float = 0.0f, float = 0.0f);
1150 float_complex (__complex__ float val) : m_value (val) {}
1151 float_complex foo (const float_complex &val)
1152 { return float_complex (~val.m_value); }
1155 AC_TRY_COMPILE([#include "conftest.h"], ,
1156 glibcpp_cv_float_complex=ok,
1157 glibcpp_cv_float_complex=buggy
1161 AC_MSG_RESULT($glibcpp_cv_float_complex)
1162 if test $glibcpp_cv_float_complex = buggy; then
1163 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1169 dnl Check for special debugging mode; not for production use.
1171 dnl GLIBCPP_ENABLE_DEBUG
1172 dnl --enable-debug sets '-ggdb3 -O0'.
1173 dnl --disable-debug sets '-g' and whatever optimization options the
1174 dnl compiler can handle.
1175 dnl + --enable-maintainer-mode automatically defaults this to on.
1176 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1177 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1178 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1179 dnl defaults to `no'.
1180 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1181 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1182 AC_ARG_ENABLE(debug,
1183 changequote(<<, >>)dnl
1184 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1185 changequote([, ])dnl
1186 [case "${enableval}" in
1187 yes) enable_debug=yes ;;
1188 no) enable_debug=no ;;
1189 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1191 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1193 dnl Option parsed, now set things appropriately
1194 case "${enable_debug}" in
1196 DEBUG_FLAGS='-O0 -ggdb3'
1202 AC_SUBST(DEBUG_FLAGS)
1207 dnl Check for "unusual" flags to pass to the compiler while building.
1209 dnl GLIBCPP_ENABLE_CXX_FLAGS
1210 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1211 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1212 dnl Somehow this same set of flags must be passed when [re]building
1214 dnl --disable-cxx-flags passes nothing.
1215 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1216 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1217 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1218 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1219 dnl If "default flags" is an empty string (or "none"), the effect is
1220 dnl the same as --disable or --enable=no.
1221 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1222 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1223 AC_ARG_ENABLE(cxx-flags,
1224 changequote(<<, >>)dnl
1225 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1226 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1227 changequote([, ])dnl
1228 [case "x$enableval" in
1230 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1232 enable_cxx_flags='' ;;
1234 enable_cxx_flags="$enableval" ;;
1236 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1238 dnl Thinko on my part during design. This kludge is the workaround.
1239 if test "$enable_cxx_flags" = "none"; then
1240 enable_cxx_flags='';
1243 dnl Run through flags (either default or command-line) and set anything
1244 dnl extra (e.g., #defines) that must accompany particular g++ options.
1245 if test -n "$enable_cxx_flags"; then
1246 for f in $enable_cxx_flags; do
1250 *) # and we're trying to pass /what/ exactly?
1251 AC_MSG_ERROR([compiler flags start with a -]) ;;
1255 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1256 AC_SUBST(EXTRA_CXX_FLAGS)
1261 dnl Check for which I/O library to use: libio, or something specific.
1263 dnl GLIBCPP_ENABLE_CSTDIO
1264 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1266 dnl default is stdio
1268 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1269 AC_MSG_CHECKING([for cstdio to use])
1270 AC_ARG_ENABLE(cstdio,
1271 [ --enable-cstdio enable stdio for target io package.
1272 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1274 if test x$enable_cstdio = xno; then
1277 enable_cstdio=stdio)
1279 enable_cstdio_flag=$enable_cstdio
1281 dnl Check if a valid I/O package
1282 case x${enable_cstdio_flag} in
1284 CSTDIO_H=config/c_io_libio.h
1285 CSTDIO_CC=config/c_io_libio.cc
1286 AC_MSG_RESULT(libio)
1288 # see if we are on a system with libio native (ie, linux)
1289 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1291 # Need to check and see what version of glibc is being used. If
1292 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1293 # compile most of libio for linux systems.
1294 if test x$has_libio = x"yes"; then
1297 AC_MSG_CHECKING([for glibc version >= 2.2])
1298 AC_EGREP_CPP([ok], [
1299 #include <features.h>
1300 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1303 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1304 AC_MSG_RESULT($glibc_satisfactory)
1308 # XXX at the moment, admit defeat and force the recompilation
1309 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1310 glibc_satisfactory=no
1312 if test x$glibc_satisfactory = x"yes"; then
1317 # bkoz XXX need to add checks to enable this
1318 # pme XXX here's a first pass at such a check
1319 if test x$enable_c_mbchar != xno; then
1327 # Using libio, but <libio.h> doesn't exist on the target system. . .
1329 # bkoz XXX need to add checks to enable this
1330 # pme XXX here's a first pass at such a check
1331 if test x$enable_c_mbchar != xno; then
1338 xstdio | x | xno | xnone | xyes)
1340 CSTDIO_H=config/c_io_stdio.h
1341 CSTDIO_CC=config/c_io_stdio.cc
1342 AC_MSG_RESULT(stdio)
1344 # We're not using stdio.
1347 # Wide characters are not supported with this package.
1351 echo "$enable_cstdio is an unknown io package" 1>&2
1355 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1356 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1358 # 2000-08-04 bkoz hack
1359 CCODECVT_C=config/c_io_libio_codecvt.c
1360 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1361 # 2000-08-04 bkoz hack
1363 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1364 test "$need_libio" = yes || test "$need_wlibio" = yes)
1365 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1366 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1367 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1368 libio_la=../libio/libio.la
1377 dnl Check for which threading library to use.
1379 dnl GLIBCPP_ENABLE_THREADS
1380 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1382 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1383 dnl libio. Any actual thread package will enable it.
1385 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1386 dnl Note this comes from the gcc/config.in and libjava/config.in
1387 dnl Efforts should be made to keep this in sync.
1388 AC_MSG_CHECKING([for threads package to use])
1389 AC_ARG_ENABLE(threads,
1390 [ --enable-threads enable thread usage for target GCC.
1391 --enable-threads=LIB use LIB thread package for target GCC. [default=no]
1393 if test x$enable_threads = xno; then
1398 enable_threads_flag=$enable_threads
1400 dnl Check if a valid thread package
1401 case x${enable_threads_flag} in
1404 target_thread_file='single'
1408 target_thread_file='posix'
1410 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1411 xsolaris | xwin32 | xdce | xvxworks)
1412 target_thread_file=$enable_threads_flag
1415 echo "$enable_threads is an unknown thread package" 1>&2
1420 dnl Check for thread package actually supported in libstdc++
1422 case "$target_thread_file" in
1424 THREADH=threads-no.h
1427 THREADH=threads-posix.h
1429 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1430 AC_MSG_ERROR(thread package $THREADS not yet supported)
1433 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1436 AC_MSG_RESULT($THREADH)
1438 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1439 if test $THREADH != threads-no.h; then
1440 AC_DEFINE(_GLIBCPP_USE_THREADS)
1445 dnl Enable atomic locking
1446 dnl GLIBCPP_ENABLE_ATOMICITY
1447 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1448 AC_MSG_CHECKING([for atomicity.h])
1449 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1450 if test "$ATOMICITYH" = "config/cpu/generic"; then
1451 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1453 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1454 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1459 dnl Check for template specializations for the 'long long' type extension.
1461 dnl GLIBCPP_ENABLE_LONG_LONG
1462 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1463 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1464 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1465 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1466 dnl defaults to `no'.
1467 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1469 dnl GLIBCPP_ENABLE_LONG_LONG
1470 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1471 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1473 AC_ARG_ENABLE(long-long,
1474 changequote(<<, >>)dnl
1475 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1476 changequote([, ])dnl
1477 [case "$enableval" in
1478 yes) enable_long_long=yes ;;
1479 no) enable_long_long=no ;;
1480 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1482 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1484 # Allow use of os-dependent settings, so that macros that turn on
1485 # C99 capabilities can be defined and used in a consistent way.
1486 OS_INC_PATH=${srcdir}/$os_include_dir
1487 ac_test_CFLAGS="${CFLAGS+set}"
1488 ac_save_CFLAGS="$CFLAGS"
1489 CFLAGS="-I$OS_INC_PATH"
1491 # Check for the existence of functions used if long long is enabled.
1492 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1493 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1495 # Check for lldiv_t, et. al.
1496 AC_MSG_CHECKING([for lldiv_t declaration])
1497 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1498 AC_TRY_COMPILE([#include <bits/os_defines.h>
1499 #include <stdlib.h>],
1501 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1503 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1504 if test x$glibcpp_lldiv_t_use = x"yes"; then
1505 AC_DEFINE(HAVE_LLDIV_T)
1508 AC_MSG_CHECKING([for enabled long long])
1509 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1510 enable_long_long=no;
1512 AC_MSG_RESULT($enable_long_long)
1514 # Option parsed, now set things appropriately
1515 if test x"$enable_long_long" = xyes; then
1516 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1520 CFLAGS="$ac_save_CFLAGS"
1525 dnl Check for what kind of C headers to use.
1527 dnl GLIBCPP_ENABLE_CHEADERS
1528 dnl --enable-cheaders= [does stuff].
1529 dnl --disable-cheaders [does not do anything, really].
1530 dnl + This will eventually need to be 'c_shadow' by default.
1531 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1532 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1533 dnl If ommitted, it defaults to `c_std'.
1534 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1535 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1536 AC_MSG_CHECKING([for c header strategy to use])
1537 AC_ARG_ENABLE(cheaders,
1538 changequote(<<, >>)dnl
1539 << --enable-cheaders construct "C" header files for
1540 g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1542 [case "$enableval" in
1547 enable_cheaders=c_std
1550 enable_cheaders=c_shadow
1552 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1555 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1556 AC_MSG_RESULT($enable_cheaders)
1558 dnl Option parsed, now set things appropriately
1559 case "$enable_cheaders" in
1561 CSHADOW_FLAGS="-fno-builtin"
1562 C_INCLUDE_DIR='${top_srcdir}/include/c_shadow'
1563 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1567 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1571 C_INCLUDE_DIR='${top_srcdir}/include/c'
1575 AC_SUBST(CSHADOW_FLAGS)
1576 AC_SUBST(C_INCLUDE_DIR)
1577 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1582 dnl Check for wide character support. Has the same effect as the option
1583 dnl in gcc's configure, but in a form that autoconf can mess with.
1585 dnl GLIBCPP_ENABLE_C_MBCHAR
1586 dnl --enable-c-mbchar requests all the wchar_t stuff.
1587 dnl --disable-c-mbchar doesn't.
1588 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1589 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1590 dnl defaults to `no'.
1591 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1592 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1593 AC_ARG_ENABLE(c-mbchar,
1594 changequote(<<, >>)dnl
1595 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1596 changequote([, ])dnl
1597 [case "$enableval" in
1598 yes) enable_c_mbchar=yes ;;
1599 no) enable_c_mbchar=no ;;
1600 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1602 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1603 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1608 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1610 dnl GLIBCPP_INCLUDE_DIR
1612 dnl TOPLEVEL_INCLUDES
1613 dnl LIBMATH_INCLUDES
1614 dnl LIBSUPCXX_INCLUDES
1616 dnl CSHADOW_INCLUDES
1618 dnl GLIBCPP_EXPORT_INCLUDE
1619 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1620 # Root level of the include sources.
1621 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1623 # Can either use include/c or include/c_std to grab "C" headers. This
1624 # variable is set to the include directory currently in use.
1625 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS
1627 # Passed down for canadian crosses.
1628 if test x"$CANADIAN" = xyes; then
1629 TOPLEVEL_INCLUDES='-I$(includedir)'
1632 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1634 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1636 #if GLIBCPP_NEED_LIBIO
1637 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1639 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1642 #if GLIBCPP_USE_CSHADOW
1643 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1644 # -I$(top_blddir)/cshadow'
1646 CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1649 # Now, export this to all the little Makefiles....
1650 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1651 AC_SUBST(TOPLEVEL_INCLUDES)
1652 AC_SUBST(LIBMATH_INCLUDES)
1653 AC_SUBST(LIBSUPCXX_INCLUDES)
1654 AC_SUBST(LIBIO_INCLUDES)
1655 AC_SUBST(CSTD_INCLUDES)
1660 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1662 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1663 # Optimization flags that are probably a good idea for thrill-seekers. Just
1664 # uncomment the lines below and make, everything else is ready to go...
1665 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1667 AC_SUBST(OPTIMIZE_CXXFLAGS)
1669 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1670 AC_SUBST(WARN_FLAGS)
1674 # Check whether LC_MESSAGES is available in <locale.h>.
1675 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1677 # This file file be copied and used freely without restrictions. It can
1678 # be used in projects which are not available under the GNU Public License
1679 # but which still want to provide support for the GNU gettext functionality.
1680 # Please note that the actual code is *not* freely available.
1684 AC_DEFUN(AC_LC_MESSAGES, [
1685 AC_CHECK_HEADER(locale.h, [
1686 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1687 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1688 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1689 if test $ac_cv_val_LC_MESSAGES = yes; then
1690 AC_DEFINE(HAVE_LC_MESSAGES)
1696 # Check for functions in math library.
1697 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1699 # This file can be copied and used freely without restrictions. It can
1700 # be used in projects which are not available under the GNU Public License
1701 # but which still want to provide support for the GNU gettext functionality.
1702 # Please note that the actual code is *not* freely available.
1706 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1707 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1708 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1709 AC_SUBST(LIBMATHOBJS)dnl
1713 # Check for string functions.
1714 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1716 # This file can be copied and used freely without restrictions. It can
1717 # be used in projects which are not available under the GNU Public License
1718 # but which still want to provide support for the GNU gettext functionality.
1719 # Please note that the actual code is *not* freely available.
1723 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1724 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1725 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1726 AC_SUBST(LIBSTRINGOBJS)dnl
1730 dnl This macro searches for a GNU version of make. If a match is found, the
1731 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1732 dnl set to "#". This is useful for including a special features in a Makefile,
1733 dnl which cannot be handled by other versions of make. The variable
1734 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1735 dnl the empty string otherwise.
1737 dnl Here is an example of its use:
1739 dnl Makefile.in might contain:
1741 dnl # A failsafe way of putting a dependency rule into a makefile
1743 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1745 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1746 dnl @ifGNUmake@ include $(DEPEND)
1747 dnl @ifGNUmake@ endif
1749 dnl Then configure.in would normally contain:
1751 dnl CHECK_GNU_MAKE()
1752 dnl AC_OUTPUT(Makefile)
1754 dnl Then perhaps to cause gnu make to override any other make, we could do
1755 dnl something like this (note that GNU make always looks for GNUmakefile first):
1757 dnl if ! test x$_cv_gnu_make_command = x ; then
1758 dnl mv Makefile GNUmakefile
1759 dnl echo .DEFAULT: > Makefile ;
1760 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1763 dnl Then, if any (well almost any) other make is called, and GNU make also
1764 dnl exists, then the other make wraps the GNU make.
1766 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1767 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1769 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1770 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1771 dnl #### conditional's subshell (" --version" is not a command), using a
1772 dnl #### different option to grep(1).
1775 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1776 _cv_gnu_make_command='' ;
1777 dnl Search all the common names for GNU make
1778 for a in "${MAKE:-make}" make gmake gnumake ; do
1779 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1781 _cv_gnu_make_command=$a ;
1786 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1787 dnl string, '#' otherwise
1788 if test "x$_cv_gnu_make_command" != "x" ; then
1796 sinclude(../libtool.m4)
1797 dnl The lines below arrange for aclocal not to bring an installed
1798 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1799 dnl add a definition of LIBTOOL to Makefile.in.
1800 ifelse(,,,[AC_SUBST(LIBTOOL)
1801 AC_DEFUN([AM_PROG_LIBTOOL])
1802 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1803 AC_DEFUN([AC_PROG_LD])
1807 # Do all the work for Automake. This macro actually does too much --
1808 # some checks are only needed if your package does certain things.
1809 # But this isn't really a big deal.
1814 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1816 AC_DEFUN(AM_INIT_AUTOMAKE,
1817 [AC_REQUIRE([AC_PROG_INSTALL])
1822 dnl test to see if srcdir already configured
1823 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1824 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1827 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1828 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1829 AC_REQUIRE([AM_SANITY_CHECK])
1830 AC_REQUIRE([AC_ARG_PROGRAM])
1831 dnl FIXME This is truly gross.
1832 missing_dir=`cd $ac_aux_dir && pwd`
1833 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1834 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1835 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1836 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1837 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1838 AC_REQUIRE([AC_PROG_MAKE_SET])])
1841 # Check to make sure that the build environment is sane.
1844 AC_DEFUN(AM_SANITY_CHECK,
1845 [AC_MSG_CHECKING([whether build environment is sane])
1848 echo timestamp > conftestfile
1849 # Do `set' in a subshell so we don't clobber the current shell's
1850 # arguments. Must try -L first in case configure is actually a
1851 # symlink; some systems play weird games with the mod time of symlinks
1852 # (eg FreeBSD returns the mod time of the symlink's containing
1855 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1856 if test "[$]*" = "X"; then
1858 set X `ls -t $srcdir/configure conftestfile`
1860 if test "[$]*" != "X $srcdir/configure conftestfile" \
1861 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1863 # If neither matched, then we have a broken ls. This can happen
1864 # if, for instance, CONFIG_SHELL is bash and it inherits a
1865 # broken ls alias from the environment. This has actually
1866 # happened. Such a system could not be considered "sane".
1867 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1868 alias in your environment])
1871 test "[$]2" = conftestfile
1877 AC_MSG_ERROR([newly created file is older than distributed files!
1878 Check your system clock])
1881 AC_MSG_RESULT(yes)])
1883 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1884 dnl The program must properly implement --version.
1885 AC_DEFUN(AM_MISSING_PROG,
1886 [AC_MSG_CHECKING(for working $2)
1887 # Run test in a subshell; some versions of sh will print an error if
1888 # an executable is not found, even if stderr is redirected.
1889 # Redirect stdin to placate older versions of autoconf. Sigh.
1890 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1892 AC_MSG_RESULT(found)
1895 AC_MSG_RESULT(missing)
1899 # Add --enable-maintainer-mode option to configure.
1904 AC_DEFUN(AM_MAINTAINER_MODE,
1905 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1906 dnl maintainer-mode is disabled by default
1907 AC_ARG_ENABLE(maintainer-mode,
1908 [ --enable-maintainer-mode enable make rules and dependencies not useful
1909 (and sometimes confusing) to the casual installer],
1910 USE_MAINTAINER_MODE=$enableval,
1911 USE_MAINTAINER_MODE=no)
1912 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1913 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1914 MAINT=$MAINTAINER_MODE_TRUE
1919 # Define a conditional.
1921 AC_DEFUN(AM_CONDITIONAL,
1932 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1934 AC_DEFUN(AM_CONFIG_HEADER,
1936 AC_CONFIG_HEADER([$1])
1937 dnl When config.status generates a header, we must update the stamp-h file.
1938 dnl This file resides in the same directory as the config header
1939 dnl that is generated. We must strip everything past the first ":",
1940 dnl and everything past the last "/".
1941 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1942 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1943 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1945 for am_file in <<$1>>; do
1946 case " <<$>>CONFIG_HEADERS " in
1947 *" <<$>>am_file "*<<)>>
1948 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1951 am_indx=`expr "<<$>>am_indx" + 1`