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 "$ac_cv_prog_gnu_ld" = "broken"; then
292 # GNU ld it is! Joy and bunny rabbits!
294 # All these tests are for C++; save the language and the compiler flags.
295 # Need to do this so that g++ won't try to link in libstdc++
296 ac_test_CFLAGS="${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 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
355 AC_TRY_COMPILE([#include <math.h>],
357 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
360 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
361 if test x$glibcpp_cv_func_$1_use = x"yes"; then
368 dnl Check to see if the (math function) argument passed is
369 dnl 1) declared when using the c++ compiler
370 dnl 2) has "C" linkage
372 dnl Define HAVE_CARGF etc if "cargf" is declared and links
374 dnl argument 1 is name of function to check
376 dnl ASSUMES argument is a math function with TWO parameters
378 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
379 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
380 AC_MSG_CHECKING([for $1 declaration])
381 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
384 AC_TRY_COMPILE([#include <math.h>],
386 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
389 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
390 if test x$glibcpp_cv_func_$1_use = x"yes"; then
397 dnl Check to see if the (math function) argument passed is
398 dnl 1) declared when using the c++ compiler
399 dnl 2) has "C" linkage
401 dnl Define HAVE_CARGF etc if "cargf" is declared and links
403 dnl argument 1 is name of function to check
405 dnl ASSUMES argument is a math function with THREE parameters
407 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
408 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
409 AC_MSG_CHECKING([for $1 declaration])
410 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
413 AC_TRY_COMPILE([#include <math.h>],
415 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
418 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
419 if test x$glibcpp_cv_func_$1_use = x"yes"; then
426 dnl Check to see if the (stdlib function) argument passed is
427 dnl 1) declared when using the c++ compiler
428 dnl 2) has "C" linkage
430 dnl Define HAVE_STRTOLD if "strtold" is declared and links
431 dnl Define HAVE_STRTOF if "strtof" is declared and links
433 dnl argument 1 is name of function to check
435 dnl ASSUMES argument is a math function with TWO parameters
437 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
438 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
439 AC_MSG_CHECKING([for $1 declaration])
440 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
443 AC_TRY_COMPILE([#include <stdlib.h>],
445 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
448 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
449 if test x$glibcpp_cv_func_$1_use = x"yes"; then
456 dnl Because the builtins are picky picky picky about the arguments they take,
457 dnl do an explict linkage tests here.
458 dnl Check to see if the (math function) argument passed is
459 dnl 1) declared when using the c++ compiler
460 dnl 2) has "C" linkage
462 dnl Define HAVE_CARGF etc if "cargf" is declared and links
464 dnl argument 1 is name of function to check
466 dnl ASSUMES argument is a math function with ONE parameter
468 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
469 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
470 AC_MSG_CHECKING([for $1 declaration])
471 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
474 AC_TRY_COMPILE([#include <math.h>],
476 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
479 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
480 if test x$glibcpp_cv_func_$1_use = x"yes"; then
481 AC_MSG_CHECKING([for $1 linkage])
482 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
483 AC_TRY_LINK([#include <math.h>],
485 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
487 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
488 if test x$glibcpp_cv_func_$1_link = x"yes"; then
489 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
490 AC_DEFINE_UNQUOTED(${ac_tr_func})
497 dnl Check to see what builtin math functions are supported
499 dnl check for __builtin_abs
500 dnl check for __builtin_fabsf
501 dnl check for __builtin_fabs
502 dnl check for __builtin_fabl
503 dnl check for __builtin_labs
504 dnl check for __builtin_sqrtf
505 dnl check for __builtin_sqrtl
506 dnl check for __builtin_fsqrt
507 dnl check for __builtin_sinf
508 dnl check for __builtin_sin
509 dnl check for __builtin_sinl
510 dnl check for __builtin_cosf
511 dnl check for __builtin_cos
512 dnl check for __builtin_cosl
514 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
515 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
516 dnl Test for builtin math functions.
517 dnl These are made in gcc/c-common.c
518 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
519 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
520 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
521 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
522 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
524 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
525 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
526 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
528 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
529 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
530 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
532 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
533 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
534 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
536 dnl There is, without a doubt, a more elegant way to have these
537 dnl names exported so that they won't be stripped out of acconfig.h by
538 dnl autoheader. I leave this as an exercise to somebody less frustrated
539 dnl than I.... please email the libstdc++ list if you can figure out a
540 dnl more elegant approach (see autoconf/acgen.m4 and specifically
541 dnl AC_CHECK_FUNC for things to steal.)
543 if test x$dummyvar = x"yes"; then
544 AC_DEFINE(HAVE___BUILTIN_ABS)
545 AC_DEFINE(HAVE___BUILTIN_LABS)
546 AC_DEFINE(HAVE___BUILTIN_COS)
547 AC_DEFINE(HAVE___BUILTIN_COSF)
548 AC_DEFINE(HAVE___BUILTIN_COSL)
549 AC_DEFINE(HAVE___BUILTIN_FABS)
550 AC_DEFINE(HAVE___BUILTIN_FABSF)
551 AC_DEFINE(HAVE___BUILTIN_FABSL)
552 AC_DEFINE(HAVE___BUILTIN_SIN)
553 AC_DEFINE(HAVE___BUILTIN_SINF)
554 AC_DEFINE(HAVE___BUILTIN_SINL)
555 AC_DEFINE(HAVE___BUILTIN_FSQRT)
556 AC_DEFINE(HAVE___BUILTIN_SQRTF)
557 AC_DEFINE(HAVE___BUILTIN_SQRTL)
563 dnl Check to see what the underlying c library
564 dnl These checks need to do two things:
565 dnl 1) make sure the name is declared when using the c++ compiler
566 dnl 2) make sure the name has "C" linkage
567 dnl This might seem like overkill but experience has shown that it's not...
569 dnl Define HAVE_STRTOF etc if "strtof" is found.
570 dnl Define HAVE_STRTOLD etc if "strtold" is found.
572 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
573 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
574 ac_test_CXXFLAGS="${CXXFLAGS+set}"
575 ac_save_CXXFLAGS="$CXXFLAGS"
576 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
578 AC_CHECK_FUNCS(strtof)
579 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
581 CXXFLAGS="$ac_save_CXXFLAGS"
586 dnl Check to see what the underlying c library or math library is like.
587 dnl These checks need to do two things:
588 dnl 1) make sure the name is declared when using the c++ compiler
589 dnl 2) make sure the name has "C" linkage
590 dnl This might seem like overkill but experience has shown that it's not...
592 dnl Define HAVE_CARGF etc if "cargf" is found.
594 dnl GLIBCPP_CHECK_MATH_SUPPORT
595 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
596 ac_test_CXXFLAGS="${CXXFLAGS+set}"
597 ac_save_CXXFLAGS="$CXXFLAGS"
598 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
601 AC_CHECK_LIB(m, sin, libm="-lm")
605 dnl Check to see if certain C math functions exist.
606 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
607 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
608 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
609 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
610 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
611 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
612 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
614 dnl Check to see if basic C math functions have float versions.
615 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
616 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
617 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosf)
618 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinf)
619 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanf)
620 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
621 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceilf)
622 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosf)
623 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshf)
624 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
625 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
626 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorf)
627 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
628 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
629 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
630 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
631 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
632 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
633 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
634 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinf)
635 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhf)
636 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
637 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanf)
638 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhf)
639 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
640 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
642 dnl Check to see if basic C math functions have long double versions.
643 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
644 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
645 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
646 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(acosl)
647 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(asinl)
648 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(atanl)
649 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
650 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(ceill)
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(cosl)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(coshl)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(floorl)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
659 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
660 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
661 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
662 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
663 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinl)
664 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sinhl)
665 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
666 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanl)
667 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(tanhl)
668 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
671 dnl Some runtimes have these functions with a preceding underscore. Please
672 dnl keep this sync'd with the one above. And if you add any new symbol,
673 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
674 dnl Check to see if certain C math functions exist.
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass)
683 dnl Check to see if basic C math functions have float versions.
684 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf)
685 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff)
686 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosf)
687 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinf)
688 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanf)
689 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2f)
690 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceilf)
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosf)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshf)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expf)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorf)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinf)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhf)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanf)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhf)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef)
711 dnl Check to see if basic C math functions have long double versions.
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_acosl)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_asinl)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_atanl)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_ceill)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_cosl)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_coshl)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_floorl)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinl)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sinhl)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl)
735 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanl)
736 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_tanhl)
737 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl)
738 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel)
741 CXXFLAGS="$ac_save_CXXFLAGS"
746 dnl Check to see if there is native support for complex
748 dnl Don't compile bits in math/* if native support exits.
750 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found.
752 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
753 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
754 dnl Check for complex versions of math functions of platform.
755 AC_CHECK_HEADERS([complex.h])
756 AC_CHECK_LIB(m, main)
757 AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf \
758 csin csinf csinh csinhf csqrt \
759 csqrtf ctan ctanf ctanh ctanhf nan hypot hypotf atan2f expf \
762 dnl Compile the long double complex functions only if the function
763 dnl provides the non-complex long double functions that are needed.
764 dnl Currently this includes copysignl and atan2l, which should be
765 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
766 USE_COMPLEX_LONG_DOUBLE=no
767 if test x$ac_cv_func_atan2l = x"yes" \
768 && test x$ac_cv_func_copysignl = x"yes"; then
769 USE_COMPLEX_LONG_DOUBLE=yes
770 AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl cpowl csinhl csinl \
771 csqrtl ctanhl ctanl hypotl signbitl clog10l)
774 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
778 dnl Check to see what architecture and operating system we are compiling
779 dnl for. Also, if architecture- or OS-specific flags are required for
780 dnl compilation, pick them up here.
782 dnl GLIBCPP_CHECK_TARGET
783 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
784 . [$]{glibcpp_basedir}/configure.target
785 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
786 AC_MSG_RESULT(OS config directory is $os_include_dir)
787 AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h)
792 dnl Check to see what the underlying c library's interface to ctype looks
793 dnl like. Bits of locale rely on things like isspace, toupper, etc. This
794 dnl stuff makes sure the right bits from the clibrary get called.
796 dnl Depending on what is found, select various configure/*/bits/ctype_base.h
797 dnl Depending on what is found, select various configure/*/ctype.cc
799 dnl GLIBCPP_CHECK_CTYPE_SUPPORT
800 AC_DEFUN(GLIBCPP_CHECK_CTYPE_SUPPORT, [
801 AC_CHECK_HEADER(ctype.h, [
803 dnl If doesn't match any specified, go with defaults.
806 dnl Test for <ctype> functionality -- GNU/Linux
807 AC_MSG_CHECKING([<ctype> for GNU/Linux])
808 AC_TRY_COMPILE([#include <ctype.h>],
811 { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \
812 + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \
813 + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \
814 ctype_linux=yes, ctype_linux=no)
815 AC_MSG_RESULT($ctype_linux)
816 if test $ctype_linux = "yes"; then
817 ctype_include_dir="config/os/gnu-linux"
821 dnl Test for <ctype> functionality -- FreeBSD 4.0
822 if test $ctype_default = "yes"; then
823 AC_MSG_CHECKING([<ctype> for FreeBSD 4.0])
824 AC_TRY_COMPILE([#include <ctype.h>],
827 { return _CTYPE_S + _CTYPE_R + _CTYPE_C + _CTYPE_U + _CTYPE_L + _CTYPE_A \
828 + _CTYPE_D + _CTYPE_P + _CTYPE_X + _CTYPE_G ;}], \
829 ctype_bsd=yes, ctype_bsd=no)
830 AC_MSG_RESULT($ctype_bsd)
831 if test $ctype_bsd = "yes"; then
832 ctype_include_dir="config/os/bsd"
837 dnl Test for <ctype> functionality -- FreeBSD 3.4
838 if test $ctype_default = "yes"; then
839 AC_MSG_CHECKING([<ctype> for FreeBSD 3.4])
840 AC_TRY_COMPILE([#include <ctype.h>],
843 { return _S + _R + _C + _U + _L + _A \
844 + _D + _P + _X + _G + __istype (a, 0);}], \
845 ctype_freebsd34=yes, ctype_freebsd34=no)
846 AC_MSG_RESULT($ctype_freebsd34)
847 if test $ctype_freebsd34 = "yes"; then
848 ctype_include_dir="config/os/bsd"
853 dnl Test for <ctype> functionality -- Solaris 2.6 and up
854 if test $ctype_default = "yes"; then
855 AC_MSG_CHECKING([<ctype> for Solaris 2.6,7,8])
856 AC_TRY_COMPILE([#include <ctype.h>],
859 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
860 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
861 + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \
862 ctype_solaris=yes, ctype_solaris=no)
863 AC_MSG_RESULT($ctype_solaris)
865 if test $ctype_solaris = "yes"; then
866 AC_MSG_CHECKING([ for version])
868 AC_TRY_COMPILE([#include <ctype.h>],
869 [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\
870 ctype_solaris26=yes, ctype_solaris26=no)
872 if test $ctype_solaris26 = "yes"; then
873 ctype_include_dir="config/os/solaris/solaris2.6"
874 AC_MSG_RESULT([Solaris 2.6])
877 ctype_include_dir="config/os/solaris/solaris2.7"
878 AC_MSG_RESULT([Solaris 7,8])
884 dnl Test for <ctype> functionality -- Solaris 2.5.1
885 if test $ctype_default = "yes"; then
886 AC_MSG_CHECKING([<ctype> for Solaris 2.5.1])
887 AC_TRY_COMPILE([#include <ctype.h>],
890 { return _U + _L + _N + _S + _P + _C + _X + _B \
892 ctype_solaris25=yes, ctype_solaris25=no)
893 AC_MSG_RESULT($ctype_solaris25)
894 if test $ctype_solaris25 = "yes"; then
895 ctype_include_dir="config/os/solaris/solaris2.5"
900 dnl Test for <ctype> functionality -- AIX
901 if test $ctype_default = "yes"; then
902 AC_MSG_CHECKING([<ctype> for AIX])
903 AC_TRY_COMPILE([#include <ctype.h>],
906 { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \
907 + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \
908 + _VALC('a') + _IS('c', 0);}], \
909 ctype_aix=yes, ctype_aix=no)
910 AC_MSG_RESULT($ctype_aix)
911 if test $ctype_aix = "yes"; then
912 ctype_include_dir="config/os/aix"
917 dnl Test for <ctype> functionality -- IRIX
918 if test $ctype_default = "yes"; then
919 AC_MSG_CHECKING([<ctype> for IRIX])
920 AC_TRY_COMPILE([#include <ctype.h>],
923 { return _U + _L + _N + _S + _P + _C + _B + _X + \
924 _A + _PR + _G + _BL;}], \
925 ctype_irix=yes, ctype_irix=no)
926 AC_MSG_RESULT($ctype_irix)
927 if test $ctype_irix = "yes"; then
928 ctype_include_dir="config/os/irix"
933 dnl Test for <ctype> functionality -- newlib
934 if test $ctype_default = "yes"; then
935 AC_MSG_CHECKING([<ctype> for newlib])
936 AC_TRY_COMPILE([#include <ctype.h>],
939 { return _U + _L + _N + _S + _P + _C + _X + _B \
941 ctype_newlib=yes, ctype_newlib=no)
942 AC_MSG_RESULT($ctype_newlib)
943 if test $ctype_newlib = "yes"; then
944 ctype_include_dir="config/os/newlib"
949 if test $ctype_default = "yes"; then
950 ctype_include_dir="config/os/generic"
951 AC_MSG_WARN("Using default ctype headers.")
954 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h,
955 include/bits/ctype_base.h)
956 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h,
957 include/bits/ctype_inline.h)
958 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
959 include/bits/ctype_noninline.h)
965 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
966 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
967 dnl must have been previously checked.)
969 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
970 dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h
972 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
973 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
974 if test x$enable_c_mbchar != xno; then
976 dnl Sanity check for existence of ISO C99 headers for extended encoding.
977 AC_CHECK_HEADER(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
978 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
980 dnl Only continue checking if the ISO C99 headers exist.
981 if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then
983 dnl Test wchar.h for mbstate_t, which is needed for char_traits
985 AC_MSG_CHECKING([for mbstate_t])
986 AC_TRY_COMPILE([#include <wchar.h>],
987 [mbstate_t teststate;],
988 use_native_mbstatet=yes, use_native_mbstatet=no)
989 AC_MSG_RESULT($use_native_mbstatet)
990 if test x"$use_native_mbstatet" = xno; then
991 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
994 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
995 dnl numeric_limits can instantiate type_traits<wchar_t>
996 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
997 AC_TRY_COMPILE([#include <wchar.h>],
998 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
999 has_wchar_minmax=yes, has_wchar_minmax=no)
1000 AC_MSG_RESULT($has_wchar_minmax)
1002 dnl Test wchar.h for WEOF, which is what we use to determine whether
1003 dnl to specialize for char_traits<wchar_t> or not.
1004 AC_MSG_CHECKING([for WEOF])
1007 #include <stddef.h>],
1009 has_weof=yes, has_weof=no)
1010 AC_MSG_RESULT($has_weof)
1012 dnl Tests for wide character functions used in char_traits<wchar_t>.
1013 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \
1014 wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no)
1016 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1017 if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \
1018 && test x"$ac_wfuncs" = xyes; then
1019 ac_isoC99_wchar_t=yes
1021 ac_isoC99_wchar_t=no
1023 AC_MSG_RESULT($ac_isoC99_wchar_t)
1025 dnl Use iconv for wchar_t to char conversions. As such, check for
1026 dnl X/Open Portability Guide, version 2 features (XPG2).
1027 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1028 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1030 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1031 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1032 ac_save_LIBS="$LIBS"
1033 LIBS="$LIBS $libiconv"
1035 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1036 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1038 LIBS="$ac_save_LIBS"
1040 AC_MSG_CHECKING([for XPG2 wchar_t support])
1041 if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \
1042 && test x"$ac_XPG2funcs" = xyes; then
1047 AC_MSG_RESULT($ac_XPG2_wchar_t)
1049 dnl At the moment, only enable wchar_t specializations if all the
1050 dnl above support is present.
1051 AC_MSG_CHECKING([for enabled wchar_t specializations])
1052 if test x"$ac_isoC99_wchar_t" = xyes \
1053 && test x"$ac_XPG2_wchar_t" = xyes; then
1054 libinst_wstring_la="libinst-wstring.la"
1055 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1056 AC_MSG_RESULT("yes")
1058 libinst_wstring_la=""
1061 AC_SUBST(libinst_wstring_la)
1064 AC_MSG_WARN([<wchar.h> not found])
1065 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
1069 dnl Wide characters disabled by the user. Maybe print a warning?
1076 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1077 dnl __complex__ float support.
1079 dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy.
1081 dnl Check to see if this version of GNU C++ is afflicted by bugs in
1082 dnl __complex__ support.Check for buggy __complex__ that will cause ICE in
1083 dnl gcc-2.95.x when using the library, unless we define the default copy
1084 dnl ctor in the specializations of complex<>.
1086 dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy.
1087 dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
1088 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [
1089 AC_REQUIRE([AC_PROG_CXX])
1091 AC_MSG_CHECKING([for GNU C++ __complex__ support])
1092 AC_CACHE_VAL(glibcpp_cv_complex, [
1095 AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \
1096 dcomplex f(const dcomplex& x) { return dcomplex(x); }], \
1097 [ dcomplex x; f(x); ],
1098 glibcpp_cv_complex=ok,
1099 glibcpp_cv_complex=buggy
1103 AC_MSG_RESULT($glibcpp_cv_complex)
1104 if test $glibcpp_cv_complex = buggy; then
1105 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
1108 AC_MSG_CHECKING([for GNU C++ __complex__ float support])
1109 AC_CACHE_VAL(glibcpp_cv_float_complex, [
1113 cat > conftest.h <<EOB
1115 // Check for buggy __complex__ that causes ICE in most versions of egcs
1116 // and gcc-2.95.x on certain platforms (eg., x86-win32).
1118 // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for
1119 // more info on the bug itself.
1124 __complex__ float m_value;
1125 float_complex (float = 0.0f, float = 0.0f);
1126 float_complex (__complex__ float val) : m_value (val) {}
1127 float_complex foo (const float_complex &val)
1128 { return float_complex (~val.m_value); }
1131 AC_TRY_COMPILE([#include "conftest.h"], ,
1132 glibcpp_cv_float_complex=ok,
1133 glibcpp_cv_float_complex=buggy
1137 AC_MSG_RESULT($glibcpp_cv_float_complex)
1138 if test $glibcpp_cv_float_complex = buggy; then
1139 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
1145 dnl Check for special debugging mode; not for production use.
1147 dnl GLIBCPP_ENABLE_DEBUG
1148 dnl --enable-debug sets '-ggdb3 -O0'.
1149 dnl --disable-debug sets '-g' and whatever optimization options the
1150 dnl compiler can handle.
1151 dnl + --enable-maintainer-mode automatically defaults this to on.
1152 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1153 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1154 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1155 dnl defaults to `no'.
1156 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1157 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1158 AC_ARG_ENABLE(debug,
1159 changequote(<<, >>)dnl
1160 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1161 changequote([, ])dnl
1162 [case "${enableval}" in
1163 yes) enable_debug=yes ;;
1164 no) enable_debug=no ;;
1165 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1167 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1169 dnl Option parsed, now set things appropriately
1170 case "${enable_debug}" in
1172 DEBUG_FLAGS='-O0 -ggdb3'
1178 AC_SUBST(DEBUG_FLAGS)
1183 dnl Check for "unusual" flags to pass to the compiler while building.
1185 dnl GLIBCPP_ENABLE_CXX_FLAGS
1186 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1187 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1188 dnl Somehow this same set of flags must be passed when [re]building
1190 dnl --disable-cxx-flags passes nothing.
1191 dnl + See http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00131.html
1192 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q2/msg00284.html
1193 dnl http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00035.html
1194 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1195 dnl If "default flags" is an empty string (or "none"), the effect is
1196 dnl the same as --disable or --enable=no.
1197 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1198 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1199 AC_ARG_ENABLE(cxx-flags,
1200 changequote(<<, >>)dnl
1201 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1202 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1203 changequote([, ])dnl
1204 [case "x$enableval" in
1206 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1208 enable_cxx_flags='' ;;
1210 enable_cxx_flags="$enableval" ;;
1212 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1214 dnl Thinko on my part during design. This kludge is the workaround.
1215 if test "$enable_cxx_flags" = "none"; then
1216 enable_cxx_flags='';
1219 dnl Run through flags (either default or command-line) and set anything
1220 dnl extra (e.g., #defines) that must accompany particular g++ options.
1221 if test -n "$enable_cxx_flags"; then
1222 for f in $enable_cxx_flags; do
1226 *) # and we're trying to pass /what/ exactly?
1227 AC_MSG_ERROR([compiler flags start with a -]) ;;
1231 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1232 AC_SUBST(EXTRA_CXX_FLAGS)
1237 dnl Check for which I/O library to use: libio, or something specific.
1239 dnl GLIBCPP_ENABLE_CSTDIO
1240 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1242 dnl default is stdio
1244 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1245 AC_MSG_CHECKING([for cstdio to use])
1246 AC_ARG_ENABLE(cstdio,
1247 [ --enable-cstdio enable stdio for target io package. (default)
1248 --enable-cstdio=LIB use LIB target-speific io package.],
1249 if test x$enable_cstdio = xno; then
1252 enable_cstdio=stdio)
1254 enable_cstdio_flag=$enable_cstdio
1256 dnl Check if a valid I/O package
1257 case x${enable_cstdio_flag} in
1259 CSTDIO_H=config/c_io_libio.h
1260 CSTDIO_CC=config/c_io_libio.cc
1261 AC_MSG_RESULT(libio)
1263 # see if we are on a system with libio native (ie, linux)
1264 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1266 # Need to check and see what version of glibc is being used. If
1267 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1268 # compile most of libio for linux systems.
1269 if test x$has_libio = x"yes"; then
1272 AC_MSG_CHECKING([for glibc version >= 2.2])
1273 AC_EGREP_CPP([ok], [
1274 #include <features.h>
1275 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1278 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1279 AC_MSG_RESULT($glibc_satisfactory)
1283 # XXX at the moment, admit defeat and force the recompilation
1284 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1285 glibc_satisfactory=no
1287 if test x$glibc_satisfactory = x"yes"; then
1292 # bkoz XXX need to add checks to enable this
1293 # pme XXX here's a first pass at such a check
1294 if test x$enable_c_mbchar != xno; then
1302 # Using libio, but <libio.h> doesn't exist on the target system. . .
1304 # bkoz XXX need to add checks to enable this
1305 # pme XXX here's a first pass at such a check
1306 if test x$enable_c_mbchar != xno; then
1313 xstdio | x | xno | xnone | xyes)
1315 CSTDIO_H=config/c_io_stdio.h
1316 CSTDIO_CC=config/c_io_stdio.cc
1317 AC_MSG_RESULT(stdio)
1319 # We're not using stdio.
1322 # Wide characters are not supported with this package.
1326 echo "$enable_cstdio is an unknown io package" 1>&2
1330 AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h)
1331 AC_LINK_FILES($CSTDIO_CC, src/c++io.cc)
1333 # 2000-08-04 bkoz hack
1334 CCODECVT_C=config/c_io_libio_codecvt.c
1335 AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c)
1336 # 2000-08-04 bkoz hack
1338 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1339 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1340 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1341 libio_la=../libio/libio.la
1350 dnl Check for which threading library to use.
1352 dnl GLIBCPP_ENABLE_THREADS
1353 dnl --enable-threads=posix sets config/threads-posix.h et. al.
1355 dnl Default is no threads, which also disables _IO_MTSAFE_IO in
1356 dnl libio. Any actual thread package will enable it.
1358 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1359 dnl Note this comes from the gcc/config.in and libjava/config.in
1360 dnl Efforts should be made to keep this in sync.
1361 AC_MSG_CHECKING([for threads package to use])
1362 AC_ARG_ENABLE(threads,
1363 [ --enable-threads enable thread usage for target GCC.
1364 --enable-threads=LIB use LIB thread package for target GCC.],
1365 if test x$enable_threads = xno; then
1370 enable_threads_flag=$enable_threads
1372 dnl Check if a valid thread package
1373 case x${enable_threads_flag} in
1376 target_thread_file='single'
1380 target_thread_file='posix'
1382 xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
1383 xsolaris | xwin32 | xdce | xvxworks)
1384 target_thread_file=$enable_threads_flag
1387 echo "$enable_threads is an unknown thread package" 1>&2
1392 dnl Check for thread package actually supported in libstdc++
1394 case "$target_thread_file" in
1396 THREADH=threads-no.h
1399 THREADH=threads-posix.h
1401 decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks)
1402 AC_MSG_ERROR(thread package $THREADS not yet supported)
1405 AC_MSG_ERROR($THREADS is an unsupported/unknown thread package)
1408 AC_MSG_RESULT($THREADH)
1410 AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h)
1411 if test $THREADH != threads-no.h; then
1412 AC_DEFINE(_GLIBCPP_USE_THREADS)
1417 dnl Enable atomic locking
1418 dnl GLIBCPP_ENABLE_ATOMICITY
1419 AC_DEFUN(GLIBCPP_ENABLE_ATOMICITY, [
1420 AC_MSG_CHECKING([for atomicity.h])
1421 # We have ATOMICITY already from GLIBCPP_CONFIGURE
1422 if test "$ATOMICITYH" = "config/cpu/generic"; then
1423 AC_MSG_WARN([No ATOMICITY settings found, using generic atomic ops.])
1425 AC_MSG_RESULT($ATOMICITYH/bits/atomicity.h)
1426 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
1431 dnl Check for template specializations for the 'long long' type extension.
1433 dnl GLIBCPP_ENABLE_LONG_LONG
1434 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1435 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1436 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1437 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1438 dnl defaults to `no'.
1439 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1441 dnl GLIBCPP_ENABLE_LONG_LONG
1442 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1443 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1445 AC_ARG_ENABLE(long-long,
1446 changequote(<<, >>)dnl
1447 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1448 changequote([, ])dnl
1449 [case "$enableval" in
1450 yes) enable_long_long=yes ;;
1451 no) enable_long_long=no ;;
1452 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1454 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1456 # Check for the existance of functions used if long long is enabled.
1457 AC_CHECK_FUNC(strtoll,,ac_strtoll=no)
1458 AC_CHECK_FUNC(strtoull,,ac_strtoull=no)
1460 AC_MSG_CHECKING([for enabled long long])
1461 if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then
1462 enable_long_long=no;
1464 AC_MSG_RESULT($enable_long_long)
1466 dnl Option parsed, now set things appropriately
1467 if test x"$enable_long_long" = xyes; then
1468 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1474 dnl Check for whether or not to do shadowed C headers.
1476 dnl GLIBCPP_ENABLE_SHADOW
1477 dnl --enable-cshadow-headers [does stuff].
1478 dnl --disable-cshadow-headers [does not do stuff].
1479 dnl + This will eventually need to be on by default.
1480 dnl + Usage: GLIBCPP_ENABLE_SHADOW[(DEFAULT)]
1481 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1482 dnl defaults to `no'.
1483 AC_DEFUN(GLIBCPP_ENABLE_SHADOW, [dnl
1484 define([GLIBCPP_ENABLE_SHADOW_DEFAULT], ifelse($1, yes, yes, no))dnl
1485 AC_MSG_CHECKING([for enabled cshadow headers])
1486 AC_ARG_ENABLE(cshadow-headers,
1487 changequote(<<, >>)dnl
1488 << --enable-cshadow-headers construct "shadowed" C header files for
1489 g++ [default=>>GLIBCPP_ENABLE_SHADOW_DEFAULT],
1491 [case "$enableval" in
1492 yes) enable_cshadow_headers=yes
1494 no) enable_cshadow_headers=no
1496 *) AC_MSG_ERROR([Unknown argument to enable/disable shadowed C headers])
1499 enable_cshadow_headers=GLIBCPP_ENABLE_SHADOW_DEFAULT)
1500 AC_MSG_RESULT($enable_cshadow_headers)
1502 dnl Option parsed, now set things appropriately
1503 dnl NB: these things may be duplicated in c++config.h as well.
1504 case "$enable_cshadow_headers" in
1506 CSHADOW_FLAGS="-fno-builtin"
1507 C_INCLUDE_DIR='${top_srcdir}/include/c_std'
1508 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1512 C_INCLUDE_DIR='${top_srcdir}/include/c'
1516 AC_SUBST(CSHADOW_FLAGS)
1517 AC_SUBST(C_INCLUDE_DIR)
1518 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cshadow_headers" = yes)
1523 dnl Check for wide character support. Has the same effect as the option
1524 dnl in gcc's configure, but in a form that autoconf can mess with.
1526 dnl GLIBCPP_ENABLE_C_MBCHAR
1527 dnl --enable-c-mbchar requests all the wchar_t stuff.
1528 dnl --disable-c-mbchar doesn't.
1529 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1530 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1531 dnl defaults to `no'.
1532 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1533 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1534 AC_ARG_ENABLE(c-mbchar,
1535 changequote(<<, >>)dnl
1536 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1537 changequote([, ])dnl
1538 [case "$enableval" in
1539 yes) enable_c_mbchar=yes ;;
1540 no) enable_c_mbchar=no ;;
1541 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1543 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1544 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1549 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1551 dnl GLIBCPP_INCLUDE_DIR
1553 dnl TOPLEVEL_INCLUDES
1554 dnl LIBMATH_INCLUDES
1555 dnl LIBSUPCXX_INCLUDES
1557 dnl CSHADOW_INCLUDES
1559 dnl GLIBCPP_EXPORT_INCLUDE
1560 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1561 # Root level of the include sources.
1562 GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include'
1564 # Can either use include/c or include/c_std to grab "C" headers. This
1565 # variable is set to the include directory currently in use.
1566 # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_SHADOW
1568 # Passed down for canadian crosses.
1569 if test x"$CANADIAN" = xyes; then
1570 TOPLEVEL_INCLUDES='-I$(includedir)'
1573 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1575 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1577 #if GLIBCPP_NEED_LIBIO
1578 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1580 #LIBIO_INCLUDES='-I$(top_srcdir)/libio'
1583 #if GLIBCPP_USE_CSHADOW
1584 # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \
1585 # -I$(top_blddir)/cshadow'
1587 CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)'
1590 # Now, export this to all the little Makefiles....
1591 AC_SUBST(GLIBCPP_INCLUDE_DIR)
1592 AC_SUBST(TOPLEVEL_INCLUDES)
1593 AC_SUBST(LIBMATH_INCLUDES)
1594 AC_SUBST(LIBSUPCXX_INCLUDES)
1595 AC_SUBST(LIBIO_INCLUDES)
1596 AC_SUBST(CSHADOW_INCLUDES)
1601 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1603 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1604 # Optimization flags that are probably a good idea for thrill-seekers. Just
1605 # uncomment the lines below and make, everything else is ready to go...
1606 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1608 AC_SUBST(OPTIMIZE_CXXFLAGS)
1610 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1611 AC_SUBST(WARN_FLAGS)
1615 # Check whether LC_MESSAGES is available in <locale.h>.
1616 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1618 # This file file be copied and used freely without restrictions. It can
1619 # be used in projects which are not available under the GNU Public License
1620 # but which still want to provide support for the GNU gettext functionality.
1621 # Please note that the actual code is *not* freely available.
1625 AC_DEFUN(AC_LC_MESSAGES, [
1626 AC_CHECK_HEADER(locale.h, [
1627 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1628 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1629 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1630 if test $ac_cv_val_LC_MESSAGES = yes; then
1631 AC_DEFINE(HAVE_LC_MESSAGES)
1637 # Check for functions in math library.
1638 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1640 # This file can be copied and used freely without restrictions. It can
1641 # be used in projects which are not available under the GNU Public License
1642 # but which still want to provide support for the GNU gettext functionality.
1643 # Please note that the actual code is *not* freely available.
1647 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1648 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1649 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1650 AC_SUBST(LIBMATHOBJS)dnl
1654 # Check for string functions.
1655 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1657 # This file can be copied and used freely without restrictions. It can
1658 # be used in projects which are not available under the GNU Public License
1659 # but which still want to provide support for the GNU gettext functionality.
1660 # Please note that the actual code is *not* freely available.
1664 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1665 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1666 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1667 AC_SUBST(LIBSTRINGOBJS)dnl
1671 dnl This macro searches for a GNU version of make. If a match is found, the
1672 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1673 dnl set to "#". This is useful for including a special features in a Makefile,
1674 dnl which cannot be handled by other versions of make. The variable
1675 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1676 dnl the empty string otherwise.
1678 dnl Here is an example of its use:
1680 dnl Makefile.in might contain:
1682 dnl # A failsafe way of putting a dependency rule into a makefile
1684 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1686 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1687 dnl @ifGNUmake@ include $(DEPEND)
1688 dnl @ifGNUmake@ endif
1690 dnl Then configure.in would normally contain:
1692 dnl CHECK_GNU_MAKE()
1693 dnl AC_OUTPUT(Makefile)
1695 dnl Then perhaps to cause gnu make to override any other make, we could do
1696 dnl something like this (note that GNU make always looks for GNUmakefile first):
1698 dnl if ! test x$_cv_gnu_make_command = x ; then
1699 dnl mv Makefile GNUmakefile
1700 dnl echo .DEFAULT: > Makefile ;
1701 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1704 dnl Then, if any (well almost any) other make is called, and GNU make also
1705 dnl exists, then the other make wraps the GNU make.
1707 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1708 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1710 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1711 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1712 dnl #### conditional's subshell (" --version" is not a command), using a
1713 dnl #### different option to grep(1).
1716 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1717 _cv_gnu_make_command='' ;
1718 dnl Search all the common names for GNU make
1719 for a in "${MAKE:-make}" make gmake gnumake ; do
1720 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1722 _cv_gnu_make_command=$a ;
1727 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1728 dnl string, '#' otherwise
1729 if test "x$_cv_gnu_make_command" != "x" ; then
1737 sinclude(../libtool.m4)
1738 dnl The lines below arrange for aclocal not to bring an installed
1739 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1740 dnl add a definition of LIBTOOL to Makefile.in.
1741 ifelse(,,,[AC_SUBST(LIBTOOL)
1742 AC_DEFUN([AM_PROG_LIBTOOL])
1743 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1744 AC_DEFUN([AC_PROG_LD])
1748 # Do all the work for Automake. This macro actually does too much --
1749 # some checks are only needed if your package does certain things.
1750 # But this isn't really a big deal.
1755 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1757 AC_DEFUN(AM_INIT_AUTOMAKE,
1758 [AC_REQUIRE([AC_PROG_INSTALL])
1763 dnl test to see if srcdir already configured
1764 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1765 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1768 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1769 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1770 AC_REQUIRE([AM_SANITY_CHECK])
1771 AC_REQUIRE([AC_ARG_PROGRAM])
1772 dnl FIXME This is truly gross.
1773 missing_dir=`cd $ac_aux_dir && pwd`
1774 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1775 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1776 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1777 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1778 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1779 AC_REQUIRE([AC_PROG_MAKE_SET])])
1782 # Check to make sure that the build environment is sane.
1785 AC_DEFUN(AM_SANITY_CHECK,
1786 [AC_MSG_CHECKING([whether build environment is sane])
1789 echo timestamp > conftestfile
1790 # Do `set' in a subshell so we don't clobber the current shell's
1791 # arguments. Must try -L first in case configure is actually a
1792 # symlink; some systems play weird games with the mod time of symlinks
1793 # (eg FreeBSD returns the mod time of the symlink's containing
1796 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1797 if test "[$]*" = "X"; then
1799 set X `ls -t $srcdir/configure conftestfile`
1801 if test "[$]*" != "X $srcdir/configure conftestfile" \
1802 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1804 # If neither matched, then we have a broken ls. This can happen
1805 # if, for instance, CONFIG_SHELL is bash and it inherits a
1806 # broken ls alias from the environment. This has actually
1807 # happened. Such a system could not be considered "sane".
1808 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1809 alias in your environment])
1812 test "[$]2" = conftestfile
1818 AC_MSG_ERROR([newly created file is older than distributed files!
1819 Check your system clock])
1822 AC_MSG_RESULT(yes)])
1824 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1825 dnl The program must properly implement --version.
1826 AC_DEFUN(AM_MISSING_PROG,
1827 [AC_MSG_CHECKING(for working $2)
1828 # Run test in a subshell; some versions of sh will print an error if
1829 # an executable is not found, even if stderr is redirected.
1830 # Redirect stdin to placate older versions of autoconf. Sigh.
1831 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1833 AC_MSG_RESULT(found)
1836 AC_MSG_RESULT(missing)
1840 # Add --enable-maintainer-mode option to configure.
1845 AC_DEFUN(AM_MAINTAINER_MODE,
1846 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1847 dnl maintainer-mode is disabled by default
1848 AC_ARG_ENABLE(maintainer-mode,
1849 [ --enable-maintainer-mode enable make rules and dependencies not useful
1850 (and sometimes confusing) to the casual installer],
1851 USE_MAINTAINER_MODE=$enableval,
1852 USE_MAINTAINER_MODE=no)
1853 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1854 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1855 MAINT=$MAINTAINER_MODE_TRUE
1860 # Define a conditional.
1862 AC_DEFUN(AM_CONDITIONAL,
1873 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1875 AC_DEFUN(AM_CONFIG_HEADER,
1877 AC_CONFIG_HEADER([$1])
1878 dnl When config.status generates a header, we must update the stamp-h file.
1879 dnl This file resides in the same directory as the config header
1880 dnl that is generated. We must strip everything past the first ":",
1881 dnl and everything past the last "/".
1882 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1883 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1884 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1886 for am_file in <<$1>>; do
1887 case " <<$>>CONFIG_HEADERS " in
1888 *" <<$>>am_file "*<<)>>
1889 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1892 am_indx=`expr "<<$>>am_indx" + 1`