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.
17 AC_DEFUN(GLIBCPP_CONFIGURE, [
18 dnl Default to --enable-multilib
19 AC_ARG_ENABLE(multilib,
20 [ --enable-multilib build hella library versions (default)],
21 [case "${enableval}" in
24 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
25 esac], [multilib=yes])dnl
27 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
28 AC_SUBST(glibcpp_basedir)
30 AM_INIT_AUTOMAKE(libstdc++, 3.0.0)
32 # Never versions of autoconf add an underscore to these functions.
33 # Prevent future problems ...
34 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
35 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
36 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
37 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
41 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
42 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
43 # are probably using a cross compiler, which will not be able to fully
44 # link an executable. This should really be fixed in autoconf
47 AC_DEFUN(LIB_AC_PROG_CC,
48 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
49 dnl Fool anybody using AC_PROG_CC.
50 AC_PROVIDE([AC_PROG_CC])
51 AC_CHECK_PROG(CC, gcc, gcc)
52 if test -z "$CC"; then
53 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
54 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
59 if test $ac_cv_prog_gcc = yes; then
61 dnl Check whether -g works, even if CFLAGS is set, in case the package
62 dnl plays around with CFLAGS (such as to build both debugging and
63 dnl normal versions of a library), tasteless as that idea is.
64 ac_test_CFLAGS="${CFLAGS+set}"
65 ac_save_CFLAGS="$CFLAGS"
68 if test "$ac_test_CFLAGS" = set; then
69 CFLAGS="$ac_save_CFLAGS"
70 elif test $ac_cv_prog_cc_g = yes; then
77 test "${CFLAGS+set}" = set || CFLAGS="-g"
83 # Can't just call these here as g++ requires libstc++ to be built....
86 # Likewise for AC_PROG_CXX.
87 AC_DEFUN(LIB_AC_PROG_CXX,
88 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
89 dnl Fool anybody using AC_PROG_CXX.
90 AC_PROVIDE([AC_PROG_CXX])
91 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
92 # flags that come in CXX while configuring libstdc++. They're different
93 # from those used for all other target libraries. If CXX is set in
94 # the environment, respect that here.
96 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
99 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
103 if test $ac_cv_prog_gxx = yes; then
105 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
106 dnl plays around with CXXFLAGS (such as to build both debugging and
107 dnl normal versions of a library), tasteless as that idea is.
108 ac_test_CXXFLAGS="${CXXFLAGS+set}"
109 ac_save_CXXFLAGS="$CXXFLAGS"
112 if test "$ac_test_CXXFLAGS" = set; then
113 CXXFLAGS="$ac_save_CXXFLAGS"
114 elif test $ac_cv_prog_cxx_g = yes; then
121 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
127 AC_CHECK_TOOL(AS, as)
128 AC_CHECK_TOOL(AR, ar)
129 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
134 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
135 # at least currently, we never actually build a program, so we never
136 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
137 # fails, because we are probably configuring with a cross compiler
138 # which cant create executables. So we include AC_EXEEXT to keep
139 # automake happy, but we dont execute it, since we dont care about
142 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
143 # to nothing, so nothing would remain between `then' and `fi' if it
144 # were not for the `:' below.
149 . [$]{glibcpp_basedir}/configure.host
151 case [$]{glibcpp_basedir} in
152 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
153 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
156 # This does for the target what configure.host does for the host. In
157 # addition to possibly modifying the same flags, it also sets up symlinks.
163 dnl Check to see if g++ can compile this library, and if so, if any version-
164 dnl specific precautions need to be taken.
166 dnl GLIBCPP_CHECK_COMPILER_VERSION
167 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
168 if test ! -f stamp-sanity-compiler; then
169 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
176 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
178 AC_MSG_RESULT($gpp_satisfactory)
179 touch stamp-sanity-compiler
185 dnl Tests for newer compiler features, or features that are present in newer
186 dnl compiler versions but not older compiler versions still in use, should
189 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
190 dnl new inlining code or the new system_header pragma will die on -Werror.
191 dnl Leave it out by default and use maint-mode to use it.
193 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
194 dnl compiler supports it and the user has not requested debug mode.
196 dnl GLIBCPP_CHECK_COMPILER_FEATURES
197 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
198 # All these tests are for C++; save the language and the compiler flags.
199 # The CXXFLAGS thing is suspicious, but based on similar bits previously
200 # found in GLIBCPP_CONFIGURE.
203 ac_test_CXXFLAGS="${CXXFLAGS+set}"
204 ac_save_CXXFLAGS="$CXXFLAGS"
206 # Check for maintainer-mode bits.
207 if test x"$USE_MAINTAINER_MODE" = xno; then
213 # Check for -ffunction-sections -fdata-sections
214 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
215 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
216 AC_TRY_COMPILE(, [int foo;
217 ], [ac_fdsections=yes], [ac_fdsections=no])
218 if test "$ac_test_CXXFLAGS" = set; then
219 CXXFLAGS="$ac_save_CXXFLAGS"
221 # this is the suspicious part
224 if test x"$ac_fdsections" = x"yes" &&
225 test x"$enable_debug" = x"no"; then
226 SECTION_FLAGS='-ffunction-sections -fdata-sections'
228 AC_MSG_RESULT($ac_fdsections)
232 AC_SUBST(SECTION_FLAGS)
237 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
238 dnl the native linker is in use, all variables will be defined to something
239 dnl safe (like an empty string).
241 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
242 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
244 dnl GLIBCPP_CHECK_LINKER_FEATURES
245 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
246 # If we're not using GNU ld, then there's no point in even trying these
247 # tests. Check for that first. We should have already tested for gld
248 # by now (in libtool), but require it now just to be safe...
251 AC_REQUIRE([AC_PROG_LD])
254 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
255 # GNU ld it is! Joy and bunny rabbits!
257 # All these tests are for C++; save the language and the compiler flags.
258 # Need to do this so that g++ won't try to link in libstdc++
259 ac_test_CFLAGS="${CFLAGS+set}"
260 ac_save_CFLAGS="$CFLAGS"
261 CFLAGS='-x c++ -Wl,--gc-sections'
263 # Check for -Wl,--gc-sections
264 # XXX This test is broken at the moment, as symbols required for
265 # linking are now in libsupc++ (not built yet.....). In addition,
266 # this test has cored on solaris in the past. In addition,
267 # --gc-sections doesn't really work at the moment (keeps on discarding
268 # used sections, first .eh_frame and now some of the glibc sections for
269 # iconv). Bzzzzt. Thanks for playing, maybe next time.
270 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
278 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
279 if test "$ac_test_CFLAGS" = set; then
280 CFLAGS="$ac_save_CFLAGS"
282 # this is the suspicious part
285 if test "$ac_sectionLDflags" = "yes"; then
286 SECTION_LDFLAGS='-Wl,--gc-sections'
288 AC_MSG_RESULT($ac_sectionLDflags)
291 # Set linker optimization flags.
292 if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
293 test x"$enable_debug" = x"no"; then
294 OPT_LDFLAGS='-Wl,-O1'
297 AC_SUBST(SECTION_LDFLAGS)
298 AC_SUBST(OPT_LDFLAGS)
303 dnl Check to see if the (math function) argument passed is
304 dnl declared when using the c++ compiler
305 dnl ASSUMES argument is a math function with ONE parameter
307 dnl GLIBCPP_CHECK_MATH_DECL_1
308 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
309 AC_MSG_CHECKING([for $1 declaration])
310 if test x${glibcpp_cv_func_$1_use+set} != xset; then
311 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
314 AC_TRY_COMPILE([#include <math.h>
320 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
324 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
328 dnl Check to see if the (math function) argument passed is
329 dnl 1) declared when using the c++ compiler
330 dnl 2) has "C" linkage
331 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
333 dnl Define HAVE_CARGF etc if "cargf" is declared and links
335 dnl argument 1 is name of function to check
337 dnl ASSUMES argument is a math function with ONE parameter
339 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
340 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
341 GLIBCPP_CHECK_MATH_DECL_1($1)
342 if test x$glibcpp_cv_func_$1_use = x"yes"; then
345 GLIBCPP_CHECK_MATH_DECL_1(_$1)
346 if test x$glibcpp_cv_func__$1_use = x"yes"; then
354 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
355 dnl of functions at once. It's an all-or-nothing check -- either
356 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
357 dnl Doing it this way saves significant configure time.
358 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
359 AC_MSG_CHECKING([for $1 functions])
360 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
363 AC_TRY_COMPILE([#include <math.h>],
364 [ `for x in $3; do echo "$x (0);"; done` ],
365 [glibcpp_cv_func_$2_use=yes],
366 [glibcpp_cv_func_$2_use=no])
368 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
369 if test x$glibcpp_cv_func_$2_use = x"yes"; then
375 dnl Check to see if the (math function) argument passed is
376 dnl declared when using the c++ compiler
377 dnl ASSUMES argument is a math function with TWO parameters
379 dnl GLIBCPP_CHECK_MATH_DECL_2
380 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
381 AC_MSG_CHECKING([for $1 declaration])
382 if test x${glibcpp_cv_func_$1_use+set} != xset; then
383 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
386 AC_TRY_COMPILE([#include <math.h>],
388 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
392 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
396 dnl Check to see if the (math function) argument passed is
397 dnl 1) declared when using the c++ compiler
398 dnl 2) has "C" linkage
400 dnl Define HAVE_CARGF etc if "cargf" is declared and links
402 dnl argument 1 is name of function to check
404 dnl ASSUMES argument is a math function with TWO parameters
406 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
407 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
408 GLIBCPP_CHECK_MATH_DECL_2($1)
409 if test x$glibcpp_cv_func_$1_use = x"yes"; then
412 GLIBCPP_CHECK_MATH_DECL_2(_$1)
413 if test x$glibcpp_cv_func__$1_use = x"yes"; then
421 dnl Check to see if the (math function) argument passed is
422 dnl declared when using the c++ compiler
423 dnl ASSUMES argument is a math function with THREE parameters
425 dnl GLIBCPP_CHECK_MATH_DECL_3
426 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
427 AC_MSG_CHECKING([for $1 declaration])
428 if test x${glibcpp_cv_func_$1_use+set} != xset; then
429 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
432 AC_TRY_COMPILE([#include <math.h>],
434 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
438 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
442 dnl Check to see if the (math function) argument passed is
443 dnl 1) declared when using the c++ compiler
444 dnl 2) has "C" linkage
446 dnl Define HAVE_CARGF etc if "cargf" is declared and links
448 dnl argument 1 is name of function to check
450 dnl ASSUMES argument is a math function with THREE parameters
452 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
453 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
454 GLIBCPP_CHECK_MATH_DECL_3($1)
455 if test x$glibcpp_cv_func_$1_use = x"yes"; then
458 GLIBCPP_CHECK_MATH_DECL_3(_$1)
459 if test x$glibcpp_cv_func__$1_use = x"yes"; then
467 dnl Check to see if the (stdlib function) argument passed is
468 dnl 1) declared when using the c++ compiler
469 dnl 2) has "C" linkage
471 dnl argument 1 is name of function to check
473 dnl ASSUMES argument is a math function with TWO parameters
475 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
476 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
477 AC_MSG_CHECKING([for $1 declaration])
478 if test x${glibcpp_cv_func_$1_use+set} != xset; then
479 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
482 AC_TRY_COMPILE([#include <stdlib.h>],
484 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
488 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
489 if test x$glibcpp_cv_func_$1_use = x"yes"; then
496 dnl Because the builtins are picky picky picky about the arguments they take,
497 dnl do an explict linkage tests here.
498 dnl Check to see if the (math function) argument passed is
499 dnl 1) declared when using the c++ compiler
500 dnl 2) has "C" linkage
502 dnl Define HAVE_CARGF etc if "cargf" is declared and links
504 dnl argument 1 is name of function to check
506 dnl ASSUMES argument is a math function with ONE parameter
508 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
509 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
510 AC_MSG_CHECKING([for $1 declaration])
511 if test x${glibcpp_cv_func_$1_use+set} != xset; then
512 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
515 AC_TRY_COMPILE([#include <math.h>],
517 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
521 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
522 if test x$glibcpp_cv_func_$1_use = x"yes"; then
523 AC_MSG_CHECKING([for $1 linkage])
524 if test x${glibcpp_cv_func_$1_link+set} != xset; then
525 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
526 AC_TRY_LINK([#include <math.h>],
528 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
531 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
532 if test x$glibcpp_cv_func_$1_link = x"yes"; then
533 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
534 AC_DEFINE_UNQUOTED(${ac_tr_func})
541 dnl Check to see what builtin math functions are supported
543 dnl check for __builtin_abs
544 dnl check for __builtin_fabsf
545 dnl check for __builtin_fabs
546 dnl check for __builtin_fabl
547 dnl check for __builtin_labs
548 dnl check for __builtin_sqrtf
549 dnl check for __builtin_sqrtl
550 dnl check for __builtin_fsqrt
551 dnl check for __builtin_sinf
552 dnl check for __builtin_sin
553 dnl check for __builtin_sinl
554 dnl check for __builtin_cosf
555 dnl check for __builtin_cos
556 dnl check for __builtin_cosl
558 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
559 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
560 dnl Test for builtin math functions.
561 dnl These are made in gcc/c-common.c
562 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
563 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
564 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
565 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
566 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
568 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
569 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
570 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
572 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
573 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
574 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
576 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
577 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
578 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
580 dnl There is, without a doubt, a more elegant way to have these
581 dnl names exported so that they won't be stripped out of acconfig.h by
582 dnl autoheader. I leave this as an exercise to somebody less frustrated
583 dnl than I.... please email the libstdc++ list if you can figure out a
584 dnl more elegant approach (see autoconf/acgen.m4 and specifically
585 dnl AC_CHECK_FUNC for things to steal.)
587 if test x$dummyvar = x"yes"; then
588 AC_DEFINE(HAVE___BUILTIN_ABS)
589 AC_DEFINE(HAVE___BUILTIN_LABS)
590 AC_DEFINE(HAVE___BUILTIN_COS)
591 AC_DEFINE(HAVE___BUILTIN_COSF)
592 AC_DEFINE(HAVE___BUILTIN_COSL)
593 AC_DEFINE(HAVE___BUILTIN_FABS)
594 AC_DEFINE(HAVE___BUILTIN_FABSF)
595 AC_DEFINE(HAVE___BUILTIN_FABSL)
596 AC_DEFINE(HAVE___BUILTIN_SIN)
597 AC_DEFINE(HAVE___BUILTIN_SINF)
598 AC_DEFINE(HAVE___BUILTIN_SINL)
599 AC_DEFINE(HAVE___BUILTIN_FSQRT)
600 AC_DEFINE(HAVE___BUILTIN_SQRTF)
601 AC_DEFINE(HAVE___BUILTIN_SQRTL)
607 dnl Check to see what the underlying c library
608 dnl These checks need to do two things:
609 dnl 1) make sure the name is declared when using the c++ compiler
610 dnl 2) make sure the name has "C" linkage
611 dnl This might seem like overkill but experience has shown that it's not...
613 dnl Define HAVE_STRTOLD if "strtold" is declared and links
614 dnl Define HAVE_STRTOF if "strtof" is declared and links
615 dnl Define HAVE_DRAND48 if "drand48" is declared and links
617 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
618 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
619 ac_test_CXXFLAGS="${CXXFLAGS+set}"
620 ac_save_CXXFLAGS="$CXXFLAGS"
621 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
623 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
624 AC_CHECK_FUNCS(drand48)
626 CXXFLAGS="$ac_save_CXXFLAGS"
631 dnl Check to see what the underlying c library or math library is like.
632 dnl These checks need to do two things:
633 dnl 1) make sure the name is declared when using the c++ compiler
634 dnl 2) make sure the name has "C" linkage
635 dnl This might seem like overkill but experience has shown that it's not...
637 dnl Define HAVE_CARGF etc if "cargf" is found.
639 dnl GLIBCPP_CHECK_MATH_SUPPORT
640 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
641 ac_test_CXXFLAGS="${CXXFLAGS+set}"
642 ac_save_CXXFLAGS="$CXXFLAGS"
643 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
646 AC_CHECK_LIB(m, sin, libm="-lm")
650 dnl Check to see if certain C math functions exist.
651 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
652 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
653 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
654 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
655 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
656 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
657 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
658 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
660 dnl Check to see if basic C math functions have float versions.
661 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
666 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
669 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
670 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
671 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
672 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
673 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
674 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
675 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
676 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
677 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
678 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
679 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
680 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
681 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
682 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
683 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
685 dnl Check to see if basic C math functions have long double versions.
686 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
691 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
699 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
700 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
701 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
702 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
712 dnl Some runtimes have these functions with a preceding underscore. Please
713 dnl keep this sync'd with the one above. And if you add any new symbol,
714 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
715 dnl Check to see if certain C math functions exist.
717 dnl Check to see if basic C math functions have float versions.
718 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
720 _acosf _asinf _atanf \
722 _coshf _sinhf _tanhf)
723 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
727 dnl Check to see if basic C math functions have long double versions.
728 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
730 _acosl _asinl _atanl \
732 _coshl _sinhl _tanhl)
733 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
738 CXXFLAGS="$ac_save_CXXFLAGS"
743 dnl Check to see if there is native support for complex
745 dnl Don't compile bits in math/* if native support exits.
747 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
749 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
750 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
751 dnl Check for complex versions of math functions of platform.
752 AC_CHECK_LIB(m, main)
753 AC_REPLACE_MATHFUNCS(nan copysignf)
755 dnl Compile the long double complex functions only if the function
756 dnl provides the non-complex long double functions that are needed.
757 dnl Currently this includes copysignl, which should be
758 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
759 USE_COMPLEX_LONG_DOUBLE=no
760 if test x$ac_cv_func_copysignl = x"yes"; then
761 USE_COMPLEX_LONG_DOUBLE=yes
762 AC_REPLACE_MATHFUNCS(signbitl)
765 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
769 dnl Check to see what architecture and operating system we are compiling
770 dnl for. Also, if architecture- or OS-specific flags are required for
771 dnl compilation, pick them up here.
773 dnl GLIBCPP_CHECK_TARGET
774 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
775 . [$]{glibcpp_basedir}/configure.target
776 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
777 AC_MSG_RESULT(OS config directory is $os_include_dir)
782 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
783 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
784 dnl must have been previously checked.)
786 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
787 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
789 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
790 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
792 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
793 dnl others even if wchar_t support is not on.
794 AC_MSG_CHECKING([for mbstate_t])
795 AC_TRY_COMPILE([#include <wchar.h>],
796 [mbstate_t teststate;],
797 have_mbstate_t=yes, have_mbstate_t=no)
798 AC_MSG_RESULT($have_mbstate_t)
799 if test x"$have_mbstate_t" = xyes; then
800 AC_DEFINE(HAVE_MBSTATE_T)
803 dnl Sanity check for existence of ISO C99 headers for extended encoding.
804 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
805 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
807 dnl Only continue checking if the ISO C99 headers exist and support is on.
808 if test x"$ac_has_wchar_h" = xyes &&
809 test x"$ac_has_wctype_h" = xyes &&
810 test x"$enable_c_mbchar" != xno; then
812 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
813 dnl numeric_limits can instantiate type_traits<wchar_t>
814 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
815 AC_TRY_COMPILE([#include <wchar.h>],
816 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
817 has_wchar_minmax=yes, has_wchar_minmax=no)
818 AC_MSG_RESULT($has_wchar_minmax)
820 dnl Test wchar.h for WEOF, which is what we use to determine whether
821 dnl to specialize for char_traits<wchar_t> or not.
822 AC_MSG_CHECKING([for WEOF])
825 #include <stddef.h>],
827 has_weof=yes, has_weof=no)
828 AC_MSG_RESULT($has_weof)
830 dnl Tests for wide character functions used in char_traits<wchar_t>.
832 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
835 dnl Checks for names injected into std:: by the c_std headers.
836 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
837 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
838 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
839 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
840 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
841 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
844 AC_MSG_CHECKING([for ISO C99 wchar_t support])
845 if test x"$has_weof" = xyes &&
846 test x"$has_wchar_minmax" = xyes &&
847 test x"$ac_wfuncs" = xyes; then
848 ac_isoC99_wchar_t=yes
852 AC_MSG_RESULT($ac_isoC99_wchar_t)
854 dnl Use iconv for wchar_t to char conversions. As such, check for
855 dnl X/Open Portability Guide, version 2 features (XPG2).
856 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
857 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
859 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
860 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
862 LIBS="$LIBS $libiconv"
864 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
865 ac_XPG2funcs=yes, ac_XPG2funcs=no)
869 AC_MSG_CHECKING([for XPG2 wchar_t support])
870 if test x"$ac_has_iconv_h" = xyes &&
871 test x"$ac_has_langinfo_h" = xyes &&
872 test x"$ac_XPG2funcs" = xyes; then
877 AC_MSG_RESULT($ac_XPG2_wchar_t)
879 dnl At the moment, only enable wchar_t specializations if all the
880 dnl above support is present.
881 AC_MSG_CHECKING([for enabled wchar_t specializations])
882 if test x"$ac_isoC99_wchar_t" = xyes &&
883 test x"$ac_XPG2_wchar_t" = xyes; then
884 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
890 dnl Wide characters disabled by the user.
891 AC_MSG_WARN([wchar_t support disabled.])
897 dnl Check for special debugging mode; not for production use.
899 dnl GLIBCPP_ENABLE_DEBUG
900 dnl --enable-debug sets '-ggdb3 -O0'.
901 dnl --disable-debug sets '-g' and whatever optimization options the
902 dnl compiler can handle.
903 dnl + --enable-maintainer-mode automatically defaults this to on.
904 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
905 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
906 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
907 dnl defaults to `no'.
908 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
909 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
911 changequote(<<, >>)dnl
912 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
914 [case "${enableval}" in
915 yes) enable_debug=yes ;;
916 no) enable_debug=no ;;
917 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
919 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
921 dnl Option parsed, now set things appropriately
922 case "${enable_debug}" in
924 DEBUG_FLAGS='-O0 -ggdb3'
930 AC_SUBST(DEBUG_FLAGS)
935 dnl Check for "unusual" flags to pass to the compiler while building.
937 dnl GLIBCPP_ENABLE_CXX_FLAGS
938 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
939 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
940 dnl Somehow this same set of flags must be passed when [re]building
942 dnl --disable-cxx-flags passes nothing.
943 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
944 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
945 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
946 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
947 dnl If "default flags" is an empty string (or "none"), the effect is
948 dnl the same as --disable or --enable=no.
949 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
950 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
951 AC_ARG_ENABLE(cxx-flags,
952 changequote(<<, >>)dnl
953 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
954 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
956 [case "x$enableval" in
958 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
960 enable_cxx_flags='' ;;
962 enable_cxx_flags="$enableval" ;;
964 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
966 dnl Thinko on my part during design. This kludge is the workaround.
967 if test "$enable_cxx_flags" = "none"; then
971 dnl Run through flags (either default or command-line) and set anything
972 dnl extra (e.g., #defines) that must accompany particular g++ options.
973 if test -n "$enable_cxx_flags"; then
974 for f in $enable_cxx_flags; do
978 *) # and we're trying to pass /what/ exactly?
979 AC_MSG_ERROR([compiler flags start with a -]) ;;
983 EXTRA_CXX_FLAGS="$enable_cxx_flags"
984 AC_SUBST(EXTRA_CXX_FLAGS)
989 dnl Check for which locale library to use: gnu or generic.
991 dnl GLIBCPP_ENABLE_CLOCALE
992 dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends
993 dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends
995 dnl default is generic
997 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
998 AC_MSG_CHECKING([for clocale to use])
999 AC_ARG_ENABLE(clocale,
1000 [ --enable-clocale enable model for target locale package.
1001 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1003 if test x$enable_clocale = xno; then
1004 enable_clocale=generic
1006 enable_clocale=generic)
1008 enable_clocale_flag=$enable_clocale
1010 dnl Check if a valid locale package
1011 case x${enable_clocale_flag} in
1013 CLOCALE_H=config/c_locale_gnu.h
1014 CLOCALE_CC=config/c_locale_gnu.cc
1018 CLOCALE_H=config/c_locale_generic.h
1019 CLOCALE_CC=config/c_locale_generic.cc
1020 AC_MSG_RESULT(generic)
1023 echo "$enable_clocale is an unknown locale package" 1>&2
1029 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1034 dnl Check for which I/O library to use: libio, or something specific.
1036 dnl GLIBCPP_ENABLE_CSTDIO
1037 dnl --enable-cstdio=libio sets config/c_io_libio.h and friends
1039 dnl default is stdio
1041 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1042 AC_MSG_CHECKING([for cstdio to use])
1043 AC_ARG_ENABLE(cstdio,
1044 [ --enable-cstdio enable stdio for target io package.
1045 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1047 if test x$enable_cstdio = xno; then
1050 enable_cstdio=stdio)
1052 enable_cstdio_flag=$enable_cstdio
1054 dnl Check if a valid I/O package
1055 case x${enable_cstdio_flag} in
1057 CSTDIO_H=config/c_io_libio.h
1058 BASIC_FILE_H=config/basic_file_libio.h
1059 BASIC_FILE_CC=config/basic_file_libio.cc
1060 AC_MSG_RESULT(libio)
1062 # see if we are on a system with libio native (ie, linux)
1063 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1065 # Need to check and see what version of glibc is being used. If
1066 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1067 # compile most of libio for linux systems.
1068 if test x$has_libio = x"yes"; then
1071 AC_MSG_CHECKING([for glibc version >= 2.2])
1072 AC_EGREP_CPP([ok], [
1073 #include <features.h>
1074 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1077 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1078 AC_MSG_RESULT($glibc_satisfactory)
1082 # XXX at the moment, admit defeat and force the recompilation
1083 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1084 glibc_satisfactory=no
1086 if test x$glibc_satisfactory = x"yes"; then
1091 # bkoz XXX need to add checks to enable this
1092 # pme XXX here's a first pass at such a check
1093 if test x$enable_c_mbchar != xno; then
1101 # Using libio, but <libio.h> doesn't exist on the target system. . .
1103 # bkoz XXX need to add checks to enable this
1104 # pme XXX here's a first pass at such a check
1105 if test x$enable_c_mbchar != xno; then
1112 xstdio | x | xno | xnone | xyes)
1114 CSTDIO_H=config/c_io_stdio.h
1115 BASIC_FILE_H=config/basic_file_stdio.h
1116 BASIC_FILE_CC=config/basic_file_stdio.cc
1117 AC_MSG_RESULT(stdio)
1119 # We're not using stdio.
1124 echo "$enable_cstdio is an unknown io package" 1>&2
1129 AC_SUBST(BASIC_FILE_H)
1130 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1132 # 2000-08-04 bkoz hack
1133 CCODECVT_C=config/c_io_libio_codecvt.c
1134 AC_SUBST(CCODECVT_C)
1135 # 2000-08-04 bkoz hack
1137 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1138 test "$need_libio" = yes || test "$need_wlibio" = yes)
1139 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1140 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1141 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1142 libio_la=../libio/libio.la
1151 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1152 dnl We must stage the required headers so that they will be installed
1153 dnl with the library (unlike libgcc, the STL implementation is provided
1154 dnl solely within headers). Since we must not inject random user-space
1155 dnl macro names into user-provided C++ code, we first stage into <file>-in
1156 dnl and process to <file> with an output command. The reason for a two-
1157 dnl stage process here is to correctly handle $srcdir!=$objdir without
1158 dnl having to write complex code (the sed commands to clean the macro
1159 dnl namespace are complex and fragile enough as it is). We must also
1160 dnl add a relative path so that -I- is supported properly.
1162 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1163 AC_MSG_CHECKING([for thread model used by GCC])
1164 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1165 AC_MSG_RESULT([$target_thread_file])
1167 if test $target_thread_file != single; then
1168 AC_DEFINE(HAVE_GTHR_DEFAULT)
1169 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1172 glibcpp_thread_h=gthr-$target_thread_file.h
1173 AC_SUBST(glibcpp_thread_h)
1178 dnl Check for exception handling support. If an explicit enable/disable
1179 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1180 dnl target may or may not support call frame exceptions.
1182 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1183 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1184 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1186 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1188 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1189 AC_MSG_CHECKING([for exception model to use])
1192 AC_ARG_ENABLE(sjlj-exceptions,
1193 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1195 [dnl Botheration. Now we've got to detect the exception model.
1196 dnl Link tests against libgcc.a are problematic since -- at least
1197 dnl as of this writing -- we've not been given proper -L bits for
1198 dnl single-tree newlib and libgloss.
1200 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1201 dnl conftest files before we got a change to grep them first.
1202 cat > conftest.$ac_ext << EOF
1203 [#]line __oline__ "configure"
1212 old_CXXFLAGS="$CXXFLAGS"
1214 if AC_TRY_EVAL(ac_compile); then
1215 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1216 enable_sjlj_exceptions=yes
1217 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1218 enable_sjlj_exceptions=no
1221 CXXFLAGS="$old_CXXFLAGS"
1223 if test x$enable_sjlj_exceptions = xyes; then
1224 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1225 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1226 ac_exception_model_name=sjlj
1227 elif test x$enable_sjlj_exceptions = xno; then
1228 ac_exception_model_name="call frame"
1230 AC_MSG_ERROR([unable to detect exception model])
1233 AC_MSG_RESULT($ac_exception_model_name)
1238 dnl Check for ISO/IEC 9899:1999 "C99" support.
1240 dnl GLIBCPP_ENABLE_C99
1241 dnl --enable-c99 defines _GLIBCPP_USE_C99
1242 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1243 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1244 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1245 dnl defaults to `no'.
1246 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1248 dnl GLIBCPP_ENABLE_C99
1249 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1250 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1253 changequote(<<, >>)dnl
1254 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1255 changequote([, ])dnl
1256 [case "$enableval" in
1257 yes) enable_c99=yes ;;
1258 no) enable_c99=no ;;
1259 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1261 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1266 # Check for the existence of <math.h> functions used if C99 is enabled.
1268 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1269 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1270 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1271 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1272 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1273 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1274 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1275 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1276 AC_TRY_COMPILE([#include <math.h>],
1277 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1278 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1279 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1280 AC_TRY_COMPILE([#include <math.h>],
1281 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1282 AC_TRY_COMPILE([#include <math.h>],
1283 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1284 AC_MSG_RESULT($ac_c99_math)
1286 # Check for the existence in <stdio.h> of vscanf, et. al.
1288 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1289 AC_TRY_COMPILE([#include <stdio.h>],
1290 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1291 AC_TRY_COMPILE([#include <stdio.h>
1293 void foo(char* fmt, ...)
1294 {va_list args; va_start(args, fmt);
1295 vfscanf(stderr, "%i", args);}],
1296 [],, [ac_c99_stdio=no])
1297 AC_TRY_COMPILE([#include <stdio.h>
1299 void foo(char* fmt, ...)
1300 {va_list args; va_start(args, fmt);
1301 vscanf("%i", args);}],
1302 [],, [ac_c99_stdio=no])
1303 AC_TRY_COMPILE([#include <stdio.h>
1305 void foo(char* fmt, ...)
1306 {va_list args; va_start(args, fmt);
1307 vsnprintf(fmt, 0, "%i", args);}],
1308 [],, [ac_c99_stdio=no])
1309 AC_TRY_COMPILE([#include <stdio.h>
1311 void foo(char* fmt, ...)
1312 {va_list args; va_start(args, fmt);
1313 vsscanf(fmt, "%i", args);}],
1314 [],, [ac_c99_stdio=no])
1315 AC_MSG_RESULT($ac_c99_stdio)
1317 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1319 AC_MSG_CHECKING([for lldiv_t declaration])
1320 AC_CACHE_VAL(ac_c99_lldiv_t, [
1321 AC_TRY_COMPILE([#include <stdlib.h>],
1323 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1325 AC_MSG_RESULT($ac_c99_lldiv_t)
1327 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1328 AC_TRY_COMPILE([#include <stdlib.h>],
1329 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1330 AC_TRY_COMPILE([#include <stdlib.h>],
1331 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1332 AC_TRY_COMPILE([#include <stdlib.h>],
1333 [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1334 AC_TRY_COMPILE([#include <stdlib.h>],
1335 [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1336 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1337 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1338 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1339 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1340 if test x"$ac_c99_lldiv_t" = x"no"; then
1343 AC_MSG_RESULT($ac_c99_stdlib)
1345 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1346 # XXX the wchar.h checks should be rolled into the general C99 bits.
1348 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1349 AC_TRY_COMPILE([#include <wchar.h>],
1350 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1351 AC_TRY_COMPILE([#include <wchar.h>],
1352 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1353 AC_TRY_COMPILE([#include <wchar.h>],
1354 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1355 AC_MSG_RESULT($ac_c99_wchar)
1357 AC_MSG_CHECKING([for enabled ISO C99 support])
1358 if test x"$ac_c99_math" = x"no" ||
1359 test x"$ac_c99_stdio" = x"no" ||
1360 test x"$ac_c99_stdlib" = x"no" ||
1361 test x"$ac_c99_wchar" = x"no"; then
1364 AC_MSG_RESULT($enable_c99)
1366 # Option parsed, now set things appropriately
1367 if test x"$enable_c99" = x"yes"; then
1368 AC_DEFINE(_GLIBCPP_USE_C99)
1376 dnl Check for template specializations for the 'long long' type extension.
1377 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1379 dnl GLIBCPP_ENABLE_LONG_LONG
1380 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1381 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1382 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1383 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1384 dnl defaults to `no'.
1385 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1387 dnl GLIBCPP_ENABLE_LONG_LONG
1388 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1389 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1391 AC_ARG_ENABLE(long-long,
1392 changequote(<<, >>)dnl
1393 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1394 changequote([, ])dnl
1395 [case "$enableval" in
1396 yes) enable_long_long=yes ;;
1397 no) enable_long_long=no ;;
1398 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1400 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1402 # iostreams require strtoll, strtoull to compile. If the
1403 # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1404 # go ahead and allow long long to be used.
1405 if test x"$enable_c99" = x"no"; then
1406 enable_long_long=no;
1409 # Option parsed, now set things appropriately
1410 AC_MSG_CHECKING([for enabled long long support])
1411 if test x"$enable_long_long" = xyes; then
1412 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1414 AC_MSG_RESULT($enable_long_long)
1419 dnl Check for what kind of C headers to use.
1421 dnl GLIBCPP_ENABLE_CHEADERS
1422 dnl --enable-cheaders= [does stuff].
1423 dnl --disable-cheaders [does not do anything, really].
1424 dnl + This will eventually need to be 'c_shadow' by default.
1425 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1426 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1427 dnl If ommitted, it defaults to `c_std'.
1428 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1429 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1430 AC_MSG_CHECKING([for c header strategy to use])
1431 AC_ARG_ENABLE(cheaders,
1432 changequote(<<, >>)dnl
1433 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1435 [case "$enableval" in
1440 enable_cheaders=c_std
1443 enable_cheaders=c_shadow
1445 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1448 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1449 AC_MSG_RESULT($enable_cheaders)
1451 dnl Option parsed, now set things appropriately
1452 case "$enable_cheaders" in
1454 CSHADOW_FLAGS="-fno-builtin"
1455 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1456 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1460 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1464 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1468 AC_SUBST(CSHADOW_FLAGS)
1469 AC_SUBST(C_INCLUDE_DIR)
1470 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1475 dnl Check for wide character support. Has the same effect as the option
1476 dnl in gcc's configure, but in a form that autoconf can mess with.
1478 dnl GLIBCPP_ENABLE_C_MBCHAR
1479 dnl --enable-c-mbchar requests all the wchar_t stuff.
1480 dnl --disable-c-mbchar doesn't.
1481 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1482 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1483 dnl defaults to `no'.
1484 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1485 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1486 AC_ARG_ENABLE(c-mbchar,
1487 changequote(<<, >>)dnl
1488 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1489 changequote([, ])dnl
1490 [case "$enableval" in
1491 yes) enable_c_mbchar=yes ;;
1492 no) enable_c_mbchar=no ;;
1493 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1495 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1496 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1501 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1503 dnl TOPLEVEL_INCLUDES
1504 dnl LIBMATH_INCLUDES
1505 dnl LIBSUPCXX_INCLUDES
1507 dnl CSHADOW_INCLUDES
1509 dnl GLIBCPP_EXPORT_INCLUDES
1510 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1511 # Root level of the build directory include sources.
1512 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1514 # Passed down for canadian crosses.
1515 if test x"$CANADIAN" = xyes; then
1516 TOPLEVEL_INCLUDES='-I$(includedir)'
1519 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1521 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1523 if test x"$need_libio" = xyes; then
1524 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1525 AC_SUBST(LIBIO_INCLUDES)
1528 # Now, export this to all the little Makefiles....
1529 AC_SUBST(GLIBCPP_INCLUDES)
1530 AC_SUBST(TOPLEVEL_INCLUDES)
1531 AC_SUBST(LIBMATH_INCLUDES)
1532 AC_SUBST(LIBSUPCXX_INCLUDES)
1537 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1539 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1540 # Optimization flags that are probably a good idea for thrill-seekers. Just
1541 # uncomment the lines below and make, everything else is ready to go...
1542 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1544 AC_SUBST(OPTIMIZE_CXXFLAGS)
1546 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1547 AC_SUBST(WARN_FLAGS)
1551 dnl GLIBCPP_EXPORT_INSTALL_INFO
1552 dnl calculates gxx_install_dir
1553 dnl exports glibcpp_toolexecdir
1554 dnl exports glibcpp_toolexeclibdir
1555 dnl exports glibcpp_builddir
1556 dnl exports glibcpp_srcdir
1557 dnl exports glibcpp_prefixdir
1559 dnl Assumes cross_compiling bits already done, and with_cross_host in
1562 dnl GLIBCPP_EXPORT_INSTALL_INFO
1563 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1565 glibcpp_toolexecdir=no
1566 glibcpp_toolexeclibdir=no
1568 # Export build and source directories.
1569 # These need to be absolute paths, yet at the same time need to
1570 # canonicalize only relative paths, because then amd will not unmount
1571 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
1572 glibcpp_builddir=`pwd`
1574 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
1575 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
1577 glibcpp_prefixdir=${prefix}
1579 AC_MSG_CHECKING([for interface version number])
1580 libstdcxx_interface=$INTERFACE
1581 AC_MSG_RESULT($libstdcxx_interface)
1583 # Process the option --with-gxx-include-dir=<path to include-files directory>
1584 AC_MSG_CHECKING([for --with-gxx-include-dir])
1585 AC_ARG_WITH(gxx-include-dir,
1586 [ --with-gxx-include-dir the installation directory for include files],
1587 [case "${withval}" in
1589 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1596 gxx_include_dir=${withval}
1598 esac], [gxx_include_dir=no])
1599 AC_MSG_RESULT($gxx_include_dir)
1601 # Process the option "--enable-version-specific-runtime-libs"
1602 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1603 AC_ARG_ENABLE(version-specific-runtime-libs,
1604 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1605 [ version_specific_libs=yes
1606 # Need the gcc compiler version to know where to install libraries
1607 # and header files if --enable-version-specific-runtime-libs option
1610 gcc_version_trigger=${srcdir}/../gcc/version.c
1611 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1612 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1613 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1614 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1615 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1617 ],version_specific_libs=no)
1618 AC_MSG_RESULT($version_specific_libs)
1620 # Default case for install directory for include files.
1621 if test x"$version_specific_libs" = x"no" \
1622 && test x"$gxx_include_dir" = x"no"; then
1623 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1626 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1627 # Install a library built with a cross compiler in tooldir, not libdir.
1628 if test x"$glibcpp_toolexecdir" = x"no"; then
1629 if test -n "$with_cross_host" &&
1630 test x"$with_cross_host" != x"no"; then
1631 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1632 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1634 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1635 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1639 AC_MSG_CHECKING([for install location])
1640 AC_MSG_RESULT($gxx_include_dir)
1642 AC_SUBST(glibcpp_builddir)
1643 AC_SUBST(glibcpp_srcdir)
1644 AC_SUBST(glibcpp_prefixdir)
1645 AC_SUBST(gxx_include_dir)
1646 AC_SUBST(glibcpp_toolexecdir)
1647 AC_SUBST(glibcpp_toolexeclibdir)
1651 # Check whether LC_MESSAGES is available in <locale.h>.
1652 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1654 # This file file be copied and used freely without restrictions. It can
1655 # be used in projects which are not available under the GNU Public License
1656 # but which still want to provide support for the GNU gettext functionality.
1657 # Please note that the actual code is *not* freely available.
1661 AC_DEFUN(AC_LC_MESSAGES, [
1662 AC_CHECK_HEADER(locale.h, [
1663 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1664 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1665 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1666 if test $ac_cv_val_LC_MESSAGES = yes; then
1667 AC_DEFINE(HAVE_LC_MESSAGES)
1673 # Check for functions in math library.
1674 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1676 # This file can be copied and used freely without restrictions. It can
1677 # be used in projects which are not available under the GNU Public License
1678 # but which still want to provide support for the GNU gettext functionality.
1679 # Please note that the actual code is *not* freely available.
1683 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1684 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1685 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1686 AC_SUBST(LIBMATHOBJS)dnl
1690 # Check for string functions.
1691 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1693 # This file can be copied and used freely without restrictions. It can
1694 # be used in projects which are not available under the GNU Public License
1695 # but which still want to provide support for the GNU gettext functionality.
1696 # Please note that the actual code is *not* freely available.
1700 dnl AC_REPLACE_STRINGFUNCS(FUNCTION...)
1701 AC_DEFUN(AC_REPLACE_STRINGFUNCS,
1702 [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"])
1703 AC_SUBST(LIBSTRINGOBJS)dnl
1707 dnl This macro searches for a GNU version of make. If a match is found, the
1708 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1709 dnl set to "#". This is useful for including a special features in a Makefile,
1710 dnl which cannot be handled by other versions of make. The variable
1711 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1712 dnl the empty string otherwise.
1714 dnl Here is an example of its use:
1716 dnl Makefile.in might contain:
1718 dnl # A failsafe way of putting a dependency rule into a makefile
1720 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1722 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1723 dnl @ifGNUmake@ include $(DEPEND)
1724 dnl @ifGNUmake@ endif
1726 dnl Then configure.in would normally contain:
1728 dnl CHECK_GNU_MAKE()
1729 dnl AC_OUTPUT(Makefile)
1731 dnl Then perhaps to cause gnu make to override any other make, we could do
1732 dnl something like this (note that GNU make always looks for GNUmakefile first):
1734 dnl if ! test x$_cv_gnu_make_command = x ; then
1735 dnl mv Makefile GNUmakefile
1736 dnl echo .DEFAULT: > Makefile ;
1737 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1740 dnl Then, if any (well almost any) other make is called, and GNU make also
1741 dnl exists, then the other make wraps the GNU make.
1743 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1744 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1746 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1747 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1748 dnl #### conditional's subshell (" --version" is not a command), using a
1749 dnl #### different option to grep(1).
1751 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1752 dnl #### ${MAKE:-make}).
1755 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1756 _cv_gnu_make_command='' ;
1757 dnl Search all the common names for GNU make
1758 for a in "${MAKE-make}" make gmake gnumake ; do
1759 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1761 _cv_gnu_make_command=$a ;
1766 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1767 dnl string, '#' otherwise
1768 if test "x$_cv_gnu_make_command" != "x" ; then
1777 dnl Check for headers for, and arguments to, the setrlimit() function.
1778 dnl Used only in testsuite_hooks.h.
1779 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1780 AC_TRY_COMPILE([#include <sys/resource.h>
1782 ], [ int f = RLIMIT_$1 ; ],
1783 [glibcpp_mresult=1], [glibcpp_mresult=0])
1784 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1785 [Only used in build directory testsuite_hooks.h.])
1787 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1788 setrlimit_have_needed_headers=yes
1789 AC_CHECK_HEADERS(sys/resource.h unistd.h,
1791 setrlimit_have_needed_headers=no)
1792 # If don't have the headers, then we can't run the tests now, and we
1793 # won't be seeing any of these during testsuite compilation.
1794 if test $setrlimit_have_needed_headers = yes; then
1795 # Can't do these in a loop, else the resulting syntax is wrong.
1796 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1797 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1798 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1799 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1805 dnl Does any necessary configuration of the testsuite directory. Generates
1806 dnl the testsuite_hooks.h header.
1808 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
1809 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
1810 GLIBCPP_CHECK_SETRLIMIT
1814 sinclude(../libtool.m4)
1815 dnl The lines below arrange for aclocal not to bring an installed
1816 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1817 dnl add a definition of LIBTOOL to Makefile.in.
1818 ifelse(,,,[AC_SUBST(LIBTOOL)
1819 AC_DEFUN([AM_PROG_LIBTOOL])
1820 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1821 AC_DEFUN([AC_PROG_LD])
1826 # Do all the work for Automake. This macro actually does too much --
1827 # some checks are only needed if your package does certain things.
1828 # But this isn't really a big deal.
1833 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
1835 AC_DEFUN(AM_INIT_AUTOMAKE,
1836 [AC_REQUIRE([AC_PROG_INSTALL])
1841 dnl test to see if srcdir already configured
1842 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
1843 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
1846 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
1847 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
1848 AC_REQUIRE([AM_SANITY_CHECK])
1849 AC_REQUIRE([AC_ARG_PROGRAM])
1850 dnl FIXME This is truly gross.
1851 missing_dir=`cd $ac_aux_dir && pwd`
1852 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
1853 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
1854 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
1855 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
1856 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
1857 AC_REQUIRE([AC_PROG_MAKE_SET])])
1860 # Check to make sure that the build environment is sane.
1863 AC_DEFUN(AM_SANITY_CHECK,
1864 [AC_MSG_CHECKING([whether build environment is sane])
1867 echo timestamp > conftestfile
1868 # Do `set' in a subshell so we don't clobber the current shell's
1869 # arguments. Must try -L first in case configure is actually a
1870 # symlink; some systems play weird games with the mod time of symlinks
1871 # (eg FreeBSD returns the mod time of the symlink's containing
1874 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
1875 if test "[$]*" = "X"; then
1877 set X `ls -t $srcdir/configure conftestfile`
1879 if test "[$]*" != "X $srcdir/configure conftestfile" \
1880 && test "[$]*" != "X conftestfile $srcdir/configure"; then
1882 # If neither matched, then we have a broken ls. This can happen
1883 # if, for instance, CONFIG_SHELL is bash and it inherits a
1884 # broken ls alias from the environment. This has actually
1885 # happened. Such a system could not be considered "sane".
1886 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
1887 alias in your environment])
1890 test "[$]2" = conftestfile
1896 AC_MSG_ERROR([newly created file is older than distributed files!
1897 Check your system clock])
1900 AC_MSG_RESULT(yes)])
1902 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
1903 dnl The program must properly implement --version.
1904 AC_DEFUN(AM_MISSING_PROG,
1905 [AC_MSG_CHECKING(for working $2)
1906 # Run test in a subshell; some versions of sh will print an error if
1907 # an executable is not found, even if stderr is redirected.
1908 # Redirect stdin to placate older versions of autoconf. Sigh.
1909 if ($2 --version) < /dev/null > /dev/null 2>&1; then
1911 AC_MSG_RESULT(found)
1914 AC_MSG_RESULT(missing)
1918 # Add --enable-maintainer-mode option to configure.
1923 AC_DEFUN(AM_MAINTAINER_MODE,
1924 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1925 dnl maintainer-mode is disabled by default
1926 AC_ARG_ENABLE(maintainer-mode,
1927 [ --enable-maintainer-mode enable make rules and dependencies not useful
1928 (and sometimes confusing) to the casual installer],
1929 USE_MAINTAINER_MODE=$enableval,
1930 USE_MAINTAINER_MODE=no)
1931 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1932 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1933 MAINT=$MAINTAINER_MODE_TRUE
1938 # Define a conditional.
1940 AC_DEFUN(AM_CONDITIONAL,
1951 # Like AC_CONFIG_HEADER, but automatically create stamp file.
1953 AC_DEFUN(AM_CONFIG_HEADER,
1955 AC_CONFIG_HEADER([$1])
1956 dnl When config.status generates a header, we must update the stamp-h file.
1957 dnl This file resides in the same directory as the config header
1958 dnl that is generated. We must strip everything past the first ":",
1959 dnl and everything past the last "/".
1960 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
1961 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
1962 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
1964 for am_file in <<$1>>; do
1965 case " <<$>>CONFIG_HEADERS " in
1966 *" <<$>>am_file "*<<)>>
1967 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
1970 am_indx=`expr "<<$>>am_indx" + 1`