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 "$ac_gabydiags" = "yes"; then
246 WFMT_FLAGS='-fdiagnostics-show-location=once'
248 AC_MSG_RESULT($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 "$ac_fdsections" = "yes"; then
262 SECTION_FLAGS='-ffunction-sections -fdata-sections'
264 AC_MSG_RESULT($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($ac_sectionLDflags)
328 # Set linker optimization flags.
329 if test "$ac_cv_prog_gnu_ld" = "yes"; 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_2(atan2f)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
641 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
642 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
654 dnl Check to see if basic C math functions have long double versions.
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
683 dnl Some runtimes have these functions with a preceding underscore. Please
684 dnl keep this sync'd with the one above. And if you add any new symbol,
685 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
686 dnl Check to see if certain C math functions exist.
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
695 dnl Check to see if basic C math functions have float versions.
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
723 dnl Check to see if basic C math functions have long double versions.
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
735 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
736 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
737 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
738 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
739 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
740 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
741 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
742 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
743 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
744 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
745 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
746 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
747 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
748 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
749 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
750 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
753 CXXFLAGS="$ac_save_CXXFLAGS"
758 dnl Check to see if there is native support for complex
760 dnl Don't compile bits in math/* if native support exits.
762 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
764 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
765 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
766 dnl Check for complex versions of math functions of platform.
767 AC_CHECK_HEADERS([complex.h])
768 AC_CHECK_LIB(m, main)
769 AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf \
770 csin csinf csinh csinhf csqrt \
771 csqrtf ctan ctanf ctanh ctanhf nan hypot hypotf atan2f expf \
774 dnl Compile the long double complex functions only if the function
775 dnl provides the non-complex long double functions that are needed.
776 dnl Currently this includes copysignl and atan2l, which should be
777 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
778 USE_COMPLEX_LONG_DOUBLE=no
779 if test x$ac_cv_func_atan2l = x"yes" \
780 && test x$ac_cv_func_copysignl = x"yes"; then
781 USE_COMPLEX_LONG_DOUBLE=yes
782 AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl csinhl csinl \
783 csqrtl ctanhl ctanl hypotl signbitl clog10l)
786 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
790 dnl Check to see what architecture and operating system we are compiling
791 dnl for. Also, if architecture- or OS-specific flags are required for
792 dnl compilation, pick them up here.
794 dnl GLIBCPP_CHECK_TARGET
795 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
796 . [$]{glibcpp_basedir}/configure.target
797 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
798 AC_MSG_RESULT(OS config directory is $os_include_dir)
799 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
804 dnl Check to see what the underlying c library's interface to ctype looks
805 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
806 dnl stuff makes sure the right bits from the clibrary get called.
808 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
809 dnl Depending on what is found, select various configure/*/ctype.cc
811 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
812 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
813 AC_CHECK_HEADER(ctype.h, [
815 dnl If doesn't match any specified, go with defaults.
818 dnl Test for <ctype> functionality -- GNU/Linux
819 AC_MSG_CHECKING([<ctype> for GNU/Linux])
820 AC_TRY_COMPILE([#include <ctype.h>],
823 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
824 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
825 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
826 ctype_linux=yes, ctype_linux=no)
827 AC_MSG_RESULT($ctype_linux)
828 if test $ctype_linux = "yes"; then
829 ctype_include_dir="config/os/gnu-linux"
833 dnl Test for <ctype> functionality -- FreeBSD 4.0
834 if test $ctype_default = "yes"; then
835 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
836 AC_TRY_COMPILE([#include <ctype.h>],
839 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
840 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
841 ctype_bsd=yes, ctype_bsd=no)
842 AC_MSG_RESULT($ctype_bsd)
843 if test $ctype_bsd = "yes"; then
844 ctype_include_dir="config/os/bsd/freebsd"
849 dnl Test for <ctype> functionality -- FreeBSD 3.4
850 if test $ctype_default = "yes"; then
851 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
852 AC_TRY_COMPILE([#include <ctype.h>],
855 { return _S + _R + _C + _U + _L + _A \
856 + _D + _P + _X + _G + __istype (a, 0);}], \
857 ctype_freebsd34=yes, ctype_freebsd34=no)
858 AC_MSG_RESULT($ctype_freebsd34)
859 if test $ctype_freebsd34 = "yes"; then
860 ctype_include_dir="config/os/bsd/freebsd"
865 dnl Test for <ctype> functionality -- NetBSD
866 if test $ctype_default = "yes"; then
867 AC_MSG_CHECKING([<ctype> for NetBSD])
868 AC_TRY_COMPILE([#include <ctype.h>],
871 { return _S + _C + _U + _L \
872 + _N + _P + _X + _tolower_tab_[a] + _toupper_tab_[a];}], \
873 ctype_netbsd=yes, ctype_netbsd=no)
874 AC_MSG_RESULT($ctype_netbsd)
875 if test $ctype_netbsd = "yes"; then
876 ctype_include_dir="config/os/bsd/netbsd"
881 dnl Test for <ctype> functionality -- Solaris 2.6 and up
882 if test $ctype_default = "yes"; then
883 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
884 AC_TRY_COMPILE([#include <ctype.h>],
887 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
888 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
889 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
890 ctype_solaris=yes, ctype_solaris=no)
891 AC_MSG_RESULT($ctype_solaris)
893 if test $ctype_solaris = "yes"; then
894 AC_MSG_CHECKING([ for version])
896 AC_TRY_COMPILE([#include <ctype.h>],
897 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
898 ctype_solaris26=yes, ctype_solaris26=no)
900 if test $ctype_solaris26 = "yes"; then
901 ctype_include_dir="config/os/solaris/solaris2.6"
902 AC_MSG_RESULT([Solaris 2.6])
905 ctype_include_dir="config/os/solaris/solaris2.7"
906 AC_MSG_RESULT([Solaris 7,8])
912 dnl Test for <ctype> functionality -- Solaris 2.5.1
913 if test $ctype_default = "yes"; then
914 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
915 AC_TRY_COMPILE([#include <ctype.h>],
918 { return _U + _L + _N + _S + _P + _C + _X + _B \
920 ctype_solaris25=yes, ctype_solaris25=no)
921 AC_MSG_RESULT($ctype_solaris25)
922 if test $ctype_solaris25 = "yes"; then
923 ctype_include_dir="config/os/solaris/solaris2.5"
928 dnl Test for <ctype> functionality -- AIX
929 if test $ctype_default = "yes"; then
930 AC_MSG_CHECKING([<ctype> for AIX])
931 AC_TRY_COMPILE([#include <ctype.h>],
934 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
935 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
936 + _VALC('a') + _IS('c', 0);}], \
937 ctype_aix=yes, ctype_aix=no)
938 AC_MSG_RESULT($ctype_aix)
939 if test $ctype_aix = "yes"; then
940 ctype_include_dir="config/os/aix"
945 dnl Test for <ctype> functionality -- IRIX
946 if test $ctype_default = "yes"; then
947 AC_MSG_CHECKING([<ctype> for IRIX])
948 AC_TRY_COMPILE([#include <ctype.h>],
951 { return _U + _L + _N + _S + _P + _C + _B + _X + \
952 _A + _PR + _G + _BL;}], \
953 ctype_irix=yes, ctype_irix=no)
954 AC_MSG_RESULT($ctype_irix)
955 if test $ctype_irix = "yes"; then
956 ctype_include_dir="config/os/irix"
961 dnl Test for <ctype> functionality -- newlib
962 if test $ctype_default = "yes"; then
963 AC_MSG_CHECKING([<ctype> for newlib])
964 AC_TRY_COMPILE([#include <ctype.h>],
967 { return _U + _L + _N + _S + _P + _C + _X + _B \
969 ctype_newlib=yes, ctype_newlib=no)
970 AC_MSG_RESULT($ctype_newlib)
971 if test $ctype_newlib = "yes"; then
972 ctype_include_dir="config/os/newlib"
977 if test $ctype_default = "yes"; then
978 ctype_include_dir="config/os/generic"
979 AC_MSG_WARN("Using default ctype headers.")
982 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
983 include/bits/ctype_base.h)
984 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h,
985 include/bits/ctype_inline.h)
986 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
987 include/bits/ctype_noninline.h)
993 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
994 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
995 dnl must have been previously checked.)
997 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
998 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
1000 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
1001 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
1002 if test x$enable_c_mbchar != xno; then
1004 dnl Sanity check for existence of ISO C99 headers for extended encoding.
1005 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
1006 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
1008 dnl Only continue checking if the ISO C99 headers exist.
1009 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
1011 dnl Test wchar.h for mbstate_t, which is needed for char_traits
1013 AC_MSG_CHECKING([for mbstate_t])
1014 AC_TRY_COMPILE([#include <wchar.h>],
1015 [mbstate_t teststate;],
1016 use_native_mbstatet=yes, use_native_mbstatet=no)
1017 AC_MSG_RESULT($use_native_mbstatet)
1019 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
1020 dnl numeric_limits can instantiate type_traits<wchar_t>
1021 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
1022 AC_TRY_COMPILE([#include <wchar.h>],
1023 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
1024 has_wchar_minmax=yes, has_wchar_minmax=no)
1025 AC_MSG_RESULT($has_wchar_minmax)
1027 dnl Test wchar.h for WEOF, which is what we use to determine whether
1028 dnl to specialize for char_traits<wchar_t> or not.
1029 AC_MSG_CHECKING([for WEOF])
1032 #include <stddef.h>],
1034 has_weof=yes, has_weof=no)
1035 AC_MSG_RESULT($has_weof)
1037 dnl Tests for wide character functions used in char_traits<wchar_t>.
1038 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1039 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1041 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1042 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1043 && test x"$ac_wfuncs" = xyes; then
1044 ac_isoC99_wchar_t=yes
1046 ac_isoC99_wchar_t=no
1048 AC_MSG_RESULT($ac_isoC99_wchar_t)
1050 dnl Use iconv for wchar_t to char conversions. As such, check for
1051 dnl X/Open Portability Guide, version 2 features (XPG2).
1052 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1053 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1055 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1056 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1057 ac_save_LIBS="$LIBS"
1058 LIBS="$LIBS $libiconv"
1060 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1061 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1063 LIBS="$ac_save_LIBS"
1065 AC_MSG_CHECKING([for XPG2 wchar_t support])
1066 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1067 && test x"$ac_XPG2funcs" = xyes; then
1072 AC_MSG_RESULT($ac_XPG2_wchar_t)
1074 dnl At the moment, only enable wchar_t specializations if all the
1075 dnl above support is present.
1076 AC_MSG_CHECKING([for enabled wchar_t specializations])
1077 if test x"$ac_isoC99_wchar_t" = xyes \
1078 && test x"$ac_XPG2_wchar_t" = xyes; then
1079 libinst_wstring_la="libinst-wstring.la"
1080 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1081 AC_MSG_RESULT("yes")
1083 libinst_wstring_la=""
1086 AC_SUBST(libinst_wstring_la)
1089 AC_MSG_WARN([<wchar.h> not found])
1093 dnl Wide characters disabled by the user. Maybe print a warning?
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://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1216 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1217 dnl http://sourceware.cygnus.com/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. (default)
1272 --enable-cstdio=LIB use LIB target-speific io package.],
1273 if test x$enable_cstdio = xno; then
1276 enable_cstdio=stdio)
1278 enable_cstdio_flag=$enable_cstdio
1280 dnl Check if a valid I/O package
1281 case x${enable_cstdio_flag} in
1283 CSTDIO_H=config/c_io_libio.h
1284 CSTDIO_CC=config/c_io_libio.cc
1285 AC_MSG_RESULT(libio)
1287 # see if we are on a system with libio native (ie, linux)
1288 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1290 # Need to check and see what version of glibc is being used. If
1291 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1292 # compile most of libio for linux systems.
1293 if test x$has_libio = x"yes"; then
1296 AC_MSG_CHECKING([for glibc version >= 2.2])
1297 AC_EGREP_CPP([ok], [
1298 #include <features.h>
1299 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1302 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1303 AC_MSG_RESULT($glibc_satisfactory)
1307 # XXX at the moment, admit defeat and force the recompilation
1308 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1309 glibc_satisfactory=no
1311 if test x$glibc_satisfactory = x"yes"; then
1316 # bkoz XXX need to add checks to enable this
1317 # pme XXX here's a first pass at such a check
1318 if test x$enable_c_mbchar != xno; then
1326 # Using libio, but <libio.h> doesn't exist on the target system. . .
1328 # bkoz XXX need to add checks to enable this
1329 # pme XXX here's a first pass at such a check
1330 if test x$enable_c_mbchar != xno; then
1337 xstdio | x | xno | xnone | xyes)
1339 CSTDIO_H=config/c_io_stdio.h
1340 CSTDIO_CC=config/c_io_stdio.cc
1341 AC_MSG_RESULT(stdio)
1343 # We're not using stdio.
1346 # Wide characters are not supported with this package.
1350 echo "$enable_cstdio is an unknown io package" 1>&2
1354 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1355 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1357 # 2000-08-04 bkoz hack
1358 CCODECVT_C=config/c_io_libio_codecvt.c
1359 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1360 # 2000-08-04 bkoz hack
1362 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1363 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1364 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1365 libio_la=../libio/libio.la
1374 dnl Check for which threading library to use.
1376 dnl GLIBCPP_ENABLE_THREADS
1377 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1379 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1380 dnl libio. Any actual thread package will enable it.
1382 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1383 dnl Note this comes from the gcc/config.in and libjava/config.in
1384 dnl Efforts should be made to keep this in sync.
1385 AC_MSG_CHECKING([for threads package to use])
1386 AC_ARG_ENABLE(threads,
1387 [ --enable-threads enable thread usage for target GCC.
1388 --enable-threads=LIB use LIB thread package for target GCC.],
1389 if test x$enable_threads = xno; then
1394 enable_threads_flag=$enable_threads
1396 dnl Check if a valid thread package
1397 case x${enable_threads_flag} in
1400 target_thread_file='single'
1404 target_thread_file='posix'
1406 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1407 xsolaris | xwin32 | xdce | xvxworks)
1408 target_thread_file=$enable_threads_flag
1411 echo "$enable_threads is an unknown thread package" 1>&2
1416 dnl Check for thread package actually supported in libstdc++
1418 case "$target_thread_file" in
1420 THREADH=threads-no.h
1423 THREADH=threads-posix.h
1425 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1426 AC_MSG_ERROR(thread package $THREADS not yet supported)
1429 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1432 AC_MSG_RESULT($THREADH)
1434 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1435 if test $THREADH != threads-no.h; then
1436 AC_DEFINE(_GLIBCPP_USE_THREADS)
1441 dnl Enable atomic locking
1442 dnl GLIBCPP_ENABLE_ATOMICITY
1443 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1444 AC_MSG_CHECKING([for atomicity.h])
1445 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1446 if test "$ATOMICITYH" = "config/cpu/generic"; then
1447 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1449 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1450 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1455 dnl Check for template specializations for the 'long long' type extension.
1457 dnl GLIBCPP_ENABLE_LONG_LONG
1458 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1459 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1460 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1461 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1462 dnl defaults to `no'.
1463 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1465 dnl GLIBCPP_ENABLE_LONG_LONG
1466 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1467 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1469 AC_ARG_ENABLE(long-long,
1470 changequote(<<, >>)dnl
1471 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1472 changequote([, ])dnl
1473 [case "$enableval" in
1474 yes) enable_long_long=yes ;;
1475 no) enable_long_long=no ;;
1476 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1478 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1480 # Allow use of os-dependent settings, so that macros that turn on
1481 # C99 capabilities can be defined and used in a consistent way.
1482 OS_INC_PATH=${srcdir}/$os_include_dir
1483 ac_test_CFLAGS="${CFLAGS+set}"
1484 ac_save_CFLAGS="$CFLAGS"
1485 CFLAGS="-I$OS_INC_PATH"
1487 # Check for the existence of functions used if long long is enabled.
1488 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1489 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1491 # Check for lldiv_t, et. al.
1492 AC_MSG_CHECKING([for lldiv_t declaration])
1493 AC_CACHE_VAL(glibcpp_lldiv_t_use, [
1494 AC_TRY_COMPILE([#include <bits/os_defines.h>
1495 #include <stdlib.h>],
1497 [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no])
1499 AC_MSG_RESULT($glibcpp_lldiv_t_use)
1500 if test x$glibcpp_lldiv_t_use = x"yes"; then
1501 AC_DEFINE(HAVE_LLDIV_T)
1504 AC_MSG_CHECKING([for enabled long long])
1505 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1506 enable_long_long=no;
1508 AC_MSG_RESULT($enable_long_long)
1510 # Option parsed, now set things appropriately
1511 if test x"$enable_long_long" = xyes; then
1512 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1516 CFLAGS="$ac_save_CFLAGS"
1521 dnl Check for whether or not to do shadowed C headers.
1523 dnl GLIBCPP_ENABLE_SHADOW
1524 dnl --enable-cshadow-headers [does stuff].
1525 dnl --disable-cshadow-headers [does not do stuff].
1526 dnl + This will eventually need to be on by default.
1527 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1528 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1529 dnl defaults to `no'.
1530 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1531 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1532 AC_MSG_CHECKING([for enabled cshadow headers])
1533 AC_ARG_ENABLE(cshadow-headers,
1534 changequote(<<, >>)dnl
1535 << --enable-cshadow-headers construct "shadowed" C header files for
1536 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1538 [case "$enableval" in
1539 yes) enable_cshadow_headers=yes
1541 no) enable_cshadow_headers=no
1543 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1546 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1547 AC_MSG_RESULT($enable_cshadow_headers)
1549 dnl Option parsed, now set things appropriately
1550 dnl NB: these things may be duplicated in c++config.h as well.
1551 case "$enable_cshadow_headers" in
1553 CSHADOW_FLAGS="-fno-builtin"
1554 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1555 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1559 C_INCLUDE_DIR='${top_srcdir}/include/c'
1563 AC_SUBST(CSHADOW_FLAGS)
1564 AC_SUBST(C_INCLUDE_DIR)
1565 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1570 dnl Check for wide character support. Has the same effect as the option
1571 dnl in gcc's configure, but in a form that autoconf can mess with.
1573 dnl GLIBCPP_ENABLE_C_MBCHAR
1574 dnl --enable-c-mbchar requests all the wchar_t stuff.
1575 dnl --disable-c-mbchar doesn't.
1576 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1577 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1578 dnl defaults to `no'.
1579 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1580 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1581 AC_ARG_ENABLE(c-mbchar,
1582 changequote(<<, >>)dnl
1583 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1584 changequote([, ])dnl
1585 [case "$enableval" in
1586 yes) enable_c_mbchar=yes ;;
1587 no) enable_c_mbchar=no ;;
1588 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1590 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1591 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1596 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1598 dnl GLIBCPP_INCLUDE_DIR
1600 dnl TOPLEVEL_INCLUDES
1601 dnl LIBMATH_INCLUDES
1602 dnl LIBSUPCXX_INCLUDES
1604 dnl CSHADOW_INCLUDES
1606 dnl GLIBCPP_EXPORT_INCLUDE
1607 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1608 # Root level of the include sources.
1609 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1611 # Can either use include/c or include/c_std to grab "C" headers. This
1612 # variable is set to the include directory currently in use.
1613 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1615 # Passed down for canadian crosses.
1616 if test x"$CANADIAN" = xyes; then
1617 TOPLEVEL_INCLUDES='-I$(includedir)'
1620 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1622 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1624 #if GLIBCPP_NEED_LIBIO
1625 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1627 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1630 #if GLIBCPP_USE_CSHADOW
1631 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1632 # -I$(top_blddir)/cshadow'
1634 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1637 # Now, export this to all the little Makefiles....
1638 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1639 AC_SUBST(TOPLEVEL_INCLUDES)
1640 AC_SUBST(LIBMATH_INCLUDES)
1641 AC_SUBST(LIBSUPCXX_INCLUDES)
1642 AC_SUBST(LIBIO_INCLUDES)
1643 AC_SUBST(CSHADOW_INCLUDES)
1648 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1650 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1651 # Optimization flags that are probably a good idea for thrill-seekers. Just
1652 # uncomment the lines below and make, everything else is ready to go...
1653 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1655 AC_SUBST(OPTIMIZE_CXXFLAGS)
1657 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1658 AC_SUBST(WARN_FLAGS)
1662 # Check whether LC_MESSAGES is available in <locale.h>.
1663 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1665 # This file file be copied and used freely without restrictions. It can
1666 # be used in projects which are not available under the GNU Public License
1667 # but which still want to provide support for the GNU gettext functionality.
1668 # Please note that the actual code is *not* freely available.
1672 AC_DEFUN(AC_LC_MESSAGES, [
1673 AC_CHECK_HEADER(locale.h, [
1674 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1675 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1676 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1677 if test $ac_cv_val_LC_MESSAGES = yes; then
1678 AC_DEFINE(HAVE_LC_MESSAGES)
1684 # Check for functions in math library.
1685 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1687 # This file can be copied and used freely without restrictions. It can
1688 # be used in projects which are not available under the GNU Public License
1689 # but which still want to provide support for the GNU gettext functionality.
1690 # Please note that the actual code is *not* freely available.
1694 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1695 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1696 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1697 AC_SUBST(LIBMATHOBJS)dnl
1701 # Check for string functions.
1702 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1704 # This file can be copied and used freely without restrictions. It can
1705 # be used in projects which are not available under the GNU Public License
1706 # but which still want to provide support for the GNU gettext functionality.
1707 # Please note that the actual code is *not* freely available.
1711 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1712 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1713 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1714 AC_SUBST(LIBSTRINGOBJS)dnl
1718 dnl This macro searches for a GNU version of make. If a match is found, the
1719 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1720 dnl set to "#". This is useful for including a special features in a Makefile,
1721 dnl which cannot be handled by other versions of make. The variable
1722 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1723 dnl the empty string otherwise.
1725 dnl Here is an example of its use:
1727 dnl Makefile.in might contain:
1729 dnl # A failsafe way of putting a dependency rule into a makefile
1731 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1733 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1734 dnl @ifGNUmake@ include $(DEPEND)
1735 dnl @ifGNUmake@ endif
1737 dnl Then configure.in would normally contain:
1739 dnl CHECK_GNU_MAKE()
1740 dnl AC_OUTPUT(Makefile)
1742 dnl Then perhaps to cause gnu make to override any other make, we could do
1743 dnl something like this (note that GNU make always looks for GNUmakefile first):
1745 dnl if ! test x$_cv_gnu_make_command = x ; then
1746 dnl mv Makefile GNUmakefile
1747 dnl echo .DEFAULT: > Makefile ;
1748 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1751 dnl Then, if any (well almost any) other make is called, and GNU make also
1752 dnl exists, then the other make wraps the GNU make.
1754 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1755 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1757 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1758 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1759 dnl #### conditional's subshell (" --version" is not a command), using a
1760 dnl #### different option to grep(1).
1763 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1764 _cv_gnu_make_command='' ;
1765 dnl Search all the common names for GNU make
1766 for a in "${MAKE:-make}" make gmake gnumake ; do
1767 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1769 _cv_gnu_make_command=$a ;
1774 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1775 dnl string, '#' otherwise
1776 if test "x$_cv_gnu_make_command" != "x" ; then
1784 sinclude(../libtool.m4)
1785 dnl The lines below arrange for aclocal not to bring an installed
1786 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1787 dnl add a definition of LIBTOOL to Makefile.in.
1788 ifelse(,,,[AC_SUBST(LIBTOOL)
1789 AC_DEFUN([AM_PROG_LIBTOOL])
1790 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1791 AC_DEFUN([AC_PROG_LD])
1795 # Do all the work for Automake. This macro actually does too much --
1796 # some checks are only needed if your package does certain things.
1797 # But this isn't really a big deal.
1802 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1804 AC_DEFUN(AM_INIT_AUTOMAKE,
1805 [AC_REQUIRE([AC_PROG_INSTALL])
1810 dnl test to see if srcdir already configured
1811 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1812 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1815 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1816 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1817 AC_REQUIRE([AM_SANITY_CHECK])
1818 AC_REQUIRE([AC_ARG_PROGRAM])
1819 dnl FIXME This is truly gross.
1820 missing_dir=`cd $ac_aux_dir && pwd`
1821 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1822 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1823 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1824 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1825 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1826 AC_REQUIRE([AC_PROG_MAKE_SET])])
1829 # Check to make sure that the build environment is sane.
1832 AC_DEFUN(AM_SANITY_CHECK,
1833 [AC_MSG_CHECKING([whether build environment is sane])
1836 echo timestamp > conftestfile
1837 # Do `set' in a subshell so we don't clobber the current shell's
1838 # arguments. Must try -L first in case configure is actually a
1839 # symlink; some systems play weird games with the mod time of symlinks
1840 # (eg FreeBSD returns the mod time of the symlink's containing
1843 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1844 if test "[$]*" = "X"; then
1846 set X `ls -t $srcdir/configure conftestfile`
1848 if test "[$]*" != "X $srcdir/configure conftestfile" \
1849 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1851 # If neither matched, then we have a broken ls. This can happen
1852 # if, for instance, CONFIG_SHELL is bash and it inherits a
1853 # broken ls alias from the environment. This has actually
1854 # happened. Such a system could not be considered "sane".
1855 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1856 alias in your environment])
1859 test "[$]2" = conftestfile
1865 AC_MSG_ERROR([newly created file is older than distributed files!
1866 Check your system clock])
1869 AC_MSG_RESULT(yes)])
1871 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1872 dnl The program must properly implement --version.
1873 AC_DEFUN(AM_MISSING_PROG,
1874 [AC_MSG_CHECKING(for working $2)
1875 # Run test in a subshell; some versions of sh will print an error if
1876 # an executable is not found, even if stderr is redirected.
1877 # Redirect stdin to placate older versions of autoconf. Sigh.
1878 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1880 AC_MSG_RESULT(found)
1883 AC_MSG_RESULT(missing)
1887 # Add --enable-maintainer-mode option to configure.
1892 AC_DEFUN(AM_MAINTAINER_MODE,
1893 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1894 dnl maintainer-mode is disabled by default
1895 AC_ARG_ENABLE(maintainer-mode,
1896 [ --enable-maintainer-mode enable make rules and dependencies not useful
1897 (and sometimes confusing) to the casual installer],
1898 USE_MAINTAINER_MODE=$enableval,
1899 USE_MAINTAINER_MODE=no)
1900 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1901 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1902 MAINT=$MAINTAINER_MODE_TRUE
1907 # Define a conditional.
1909 AC_DEFUN(AM_CONDITIONAL,
1920 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1922 AC_DEFUN(AM_CONFIG_HEADER,
1924 AC_CONFIG_HEADER([$1])
1925 dnl When config.status generates a header, we must update the stamp-h file.
1926 dnl This file resides in the same directory as the config header
1927 dnl that is generated. We must strip everything past the first ":",
1928 dnl and everything past the last "/".
1929 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1930 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1931 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1933 for am_file in <<$1>>; do
1934 case " <<$>>CONFIG_HEADERS " in
1935 *" <<$>>am_file "*<<)>>
1936 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1939 am_indx=`expr "<<$>>am_indx" + 1`