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 ${enableval} for multilib option) ;;
25 esac], [multilib=yes])dnl
27 # When building with srcdir == objdir, links to the source files will
28 # be created in directories within the target_subdir. We have to
29 # adjust toplevel_srcdir accordingly, so that configure finds
30 # install-sh and other auxiliary files that live in the top-level
32 if test "${srcdir}" = "."; then
33 if test -z "${with_target_subdir}"; then
36 if test "${with_target_subdir}" != "."; then
37 toprel="${with_multisrctop}../.."
39 toprel="${with_multisrctop}.."
45 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
46 toplevel_srcdir=\${top_srcdir}/$toprel
47 AC_SUBST(toplevel_srcdir)
49 # Export build and source directories.
50 # These need to be absolute paths, yet at the same time need to
51 # canonicalize only relative paths, because then amd will not unmount
52 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
53 glibcpp_builddir=`pwd`
55 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
56 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
58 AC_SUBST(glibcpp_builddir)
59 AC_SUBST(glibcpp_srcdir)
61 dnl This is here just to satisfy automake.
62 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
64 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.50+, can also
65 # be 'cp -p' if linking isn't available.
66 #ac_cv_prog_LN_S='cp -p'
69 # We use these options to decide which functions to include.
70 AC_ARG_WITH(target-subdir,
71 [ --with-target-subdir=SUBDIR
72 configuring in a subdirectory])
73 AC_ARG_WITH(cross-host,
74 [ --with-cross-host=HOST configuring with a cross compiler])
76 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
77 AC_SUBST(glibcpp_basedir)
79 # Never versions of autoconf add an underscore to these functions.
80 # Prevent future problems ...
81 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
82 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
83 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
84 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
88 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
89 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
90 # are probably using a cross compiler, which will not be able to fully
91 # link an executable. This should really be fixed in autoconf
94 AC_DEFUN(LIB_AC_PROG_CC,
95 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
96 dnl Fool anybody using AC_PROG_CC.
97 AC_PROVIDE([AC_PROG_CC])
98 AC_CHECK_PROG(CC, gcc, gcc)
99 if test -z "$CC"; then
100 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
101 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
106 if test $ac_cv_prog_gcc = yes; then
108 dnl Check whether -g works, even if CFLAGS is set, in case the package
109 dnl plays around with CFLAGS (such as to build both debugging and
110 dnl normal versions of a library), tasteless as that idea is.
111 ac_test_CFLAGS="${CFLAGS+set}"
112 ac_save_CFLAGS="$CFLAGS"
115 if test "$ac_test_CFLAGS" = set; then
116 CFLAGS="$ac_save_CFLAGS"
117 elif test $ac_cv_prog_cc_g = yes; then
124 test "${CFLAGS+set}" = set || CFLAGS="-g"
130 # Can't just call these here as g++ requires libstc++ to be built....
133 # Likewise for AC_PROG_CXX.
134 AC_DEFUN(LIB_AC_PROG_CXX,
135 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
136 dnl Fool anybody using AC_PROG_CXX.
137 AC_PROVIDE([AC_PROG_CXX])
138 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
139 # flags that come in CXX while configuring libstdc++. They're different
140 # from those used for all other target libraries. If CXX is set in
141 # the environment, respect that here.
143 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
144 AC_SUBST(glibcpp_CXX)
146 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
150 if test $ac_cv_prog_gxx = yes; then
152 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
153 dnl plays around with CXXFLAGS (such as to build both debugging and
154 dnl normal versions of a library), tasteless as that idea is.
155 ac_test_CXXFLAGS="${CXXFLAGS+set}"
156 ac_save_CXXFLAGS="$CXXFLAGS"
159 if test "$ac_test_CXXFLAGS" = set; then
160 CXXFLAGS="$ac_save_CXXFLAGS"
161 elif test $ac_cv_prog_cxx_g = yes; then
168 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
174 # For some reason, gettext needs this.
177 AC_CHECK_TOOL(AS, as)
178 AC_CHECK_TOOL(AR, ar)
179 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
184 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
185 # at least currently, we never actually build a program, so we never
186 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
187 # fails, because we are probably configuring with a cross compiler
188 # which cant create executables. So we include AC_EXEEXT to keep
189 # automake happy, but we dont execute it, since we dont care about
192 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
193 # to nothing, so nothing would remain between `then' and `fi' if it
194 # were not for the `:' below.
199 . [$]{glibcpp_basedir}/configure.host
201 case [$]{glibcpp_basedir} in
202 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
203 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
206 # This does for the target what configure.host does for the host. In
207 # addition to possibly modifying the same flags, it also sets up symlinks.
215 dnl Check to see if g++ can compile this library, and if so, if any version-
216 dnl specific precautions need to be taken.
218 dnl GLIBCPP_CHECK_COMPILER_VERSION
219 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
220 if test ! -f stamp-sanity-compiler; then
221 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
228 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
230 AC_MSG_RESULT($gpp_satisfactory)
231 touch stamp-sanity-compiler
237 dnl Tests for newer compiler features, or features that are present in newer
238 dnl compiler versions but not older compiler versions still in use, should
241 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
242 dnl new inlining code or the new system_header pragma will die on -Werror.
243 dnl Leave it out by default and use maint-mode to use it.
245 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
246 dnl compiler supports it and the user has not requested debug mode.
248 dnl GLIBCPP_CHECK_COMPILER_FEATURES
249 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
250 # All these tests are for C++; save the language and the compiler flags.
251 # The CXXFLAGS thing is suspicious, but based on similar bits previously
252 # found in GLIBCPP_CONFIGURE.
255 ac_test_CXXFLAGS="${CXXFLAGS+set}"
256 ac_save_CXXFLAGS="$CXXFLAGS"
258 # Check for maintainer-mode bits.
259 if test x"$USE_MAINTAINER_MODE" = xno; then
265 # Check for -ffunction-sections -fdata-sections
266 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
267 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
268 AC_TRY_COMPILE(, [int foo;
269 ], [ac_fdsections=yes], [ac_fdsections=no])
270 if test "$ac_test_CXXFLAGS" = set; then
271 CXXFLAGS="$ac_save_CXXFLAGS"
273 # this is the suspicious part
276 if test x"$ac_fdsections" = x"yes" &&
277 test x"$enable_debug" = x"no"; then
278 SECTION_FLAGS='-ffunction-sections -fdata-sections'
280 AC_MSG_RESULT($ac_fdsections)
284 AC_SUBST(SECTION_FLAGS)
289 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
290 dnl the native linker is in use, all variables will be defined to something
291 dnl safe (like an empty string).
293 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
294 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
296 dnl GLIBCPP_CHECK_LINKER_FEATURES
297 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
298 # If we're not using GNU ld, then there's no point in even trying these
299 # tests. Check for that first. We should have already tested for gld
300 # by now (in libtool), but require it now just to be safe...
303 AC_REQUIRE([AC_PROG_LD])
306 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
307 # GNU ld it is! Joy and bunny rabbits!
309 # All these tests are for C++; save the language and the compiler flags.
310 # Need to do this so that g++ won't try to link in libstdc++
311 ac_test_CFLAGS="${CFLAGS+set}"
312 ac_save_CFLAGS="$CFLAGS"
313 CFLAGS='-x c++ -Wl,--gc-sections'
315 # Check for -Wl,--gc-sections
316 # XXX This test is broken at the moment, as symbols required for
317 # linking are now in libsupc++ (not built yet.....). In addition,
318 # this test has cored on solaris in the past. In addition,
319 # --gc-sections doesn't really work at the moment (keeps on discarding
320 # used sections, first .eh_frame and now some of the glibc sections for
321 # iconv). Bzzzzt. Thanks for playing, maybe next time.
322 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
330 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
331 if test "$ac_test_CFLAGS" = set; then
332 CFLAGS="$ac_save_CFLAGS"
334 # this is the suspicious part
337 if test "$ac_sectionLDflags" = "yes"; then
338 SECTION_LDFLAGS='-Wl,--gc-sections'
340 AC_MSG_RESULT($ac_sectionLDflags)
343 # Set linker optimization flags.
344 if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
345 test x"$enable_debug" = x"no"; then
346 OPT_LDFLAGS='-Wl,-O1'
349 AC_SUBST(SECTION_LDFLAGS)
350 AC_SUBST(OPT_LDFLAGS)
355 dnl Check to see if the (math function) argument passed is
356 dnl declared when using the c++ compiler
357 dnl ASSUMES argument is a math function with ONE parameter
359 dnl GLIBCPP_CHECK_MATH_DECL_1
360 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
361 AC_MSG_CHECKING([for $1 declaration])
362 if test x${glibcpp_cv_func_$1_use+set} != xset; then
363 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
366 AC_TRY_COMPILE([#include <math.h>
372 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
376 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
380 dnl Check to see if the (math function) argument passed is
381 dnl 1) declared when using the c++ compiler
382 dnl 2) has "C" linkage
383 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
385 dnl Define HAVE_CARGF etc if "cargf" is declared and links
387 dnl argument 1 is name of function to check
389 dnl ASSUMES argument is a math function with ONE parameter
391 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
392 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
393 GLIBCPP_CHECK_MATH_DECL_1($1)
394 if test x$glibcpp_cv_func_$1_use = x"yes"; then
397 GLIBCPP_CHECK_MATH_DECL_1(_$1)
398 if test x$glibcpp_cv_func__$1_use = x"yes"; then
406 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
407 dnl of functions at once. It's an all-or-nothing check -- either
408 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
409 dnl Doing it this way saves significant configure time.
410 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
411 AC_MSG_CHECKING([for $1 functions])
412 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
415 AC_TRY_COMPILE([#include <math.h>],
416 [ `for x in $3; do echo "$x (0);"; done` ],
417 [glibcpp_cv_func_$2_use=yes],
418 [glibcpp_cv_func_$2_use=no])
420 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
421 if test x$glibcpp_cv_func_$2_use = x"yes"; then
427 dnl Check to see if the (math function) argument passed is
428 dnl declared when using the c++ compiler
429 dnl ASSUMES argument is a math function with TWO parameters
431 dnl GLIBCPP_CHECK_MATH_DECL_2
432 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
433 AC_MSG_CHECKING([for $1 declaration])
434 if test x${glibcpp_cv_func_$1_use+set} != xset; then
435 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
438 AC_TRY_COMPILE([#include <math.h>],
440 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
444 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
448 dnl Check to see if the (math function) argument passed is
449 dnl 1) declared when using the c++ compiler
450 dnl 2) has "C" linkage
452 dnl Define HAVE_CARGF etc if "cargf" is declared and links
454 dnl argument 1 is name of function to check
456 dnl ASSUMES argument is a math function with TWO parameters
458 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
459 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
460 GLIBCPP_CHECK_MATH_DECL_2($1)
461 if test x$glibcpp_cv_func_$1_use = x"yes"; then
464 GLIBCPP_CHECK_MATH_DECL_2(_$1)
465 if test x$glibcpp_cv_func__$1_use = x"yes"; then
473 dnl Check to see if the (math function) argument passed is
474 dnl declared when using the c++ compiler
475 dnl ASSUMES argument is a math function with THREE parameters
477 dnl GLIBCPP_CHECK_MATH_DECL_3
478 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
479 AC_MSG_CHECKING([for $1 declaration])
480 if test x${glibcpp_cv_func_$1_use+set} != xset; then
481 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
484 AC_TRY_COMPILE([#include <math.h>],
486 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
490 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
494 dnl Check to see if the (math function) argument passed is
495 dnl 1) declared when using the c++ compiler
496 dnl 2) has "C" linkage
498 dnl Define HAVE_CARGF etc if "cargf" is declared and links
500 dnl argument 1 is name of function to check
502 dnl ASSUMES argument is a math function with THREE parameters
504 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
505 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
506 GLIBCPP_CHECK_MATH_DECL_3($1)
507 if test x$glibcpp_cv_func_$1_use = x"yes"; then
510 GLIBCPP_CHECK_MATH_DECL_3(_$1)
511 if test x$glibcpp_cv_func__$1_use = x"yes"; then
519 dnl Check to see if the (stdlib function) argument passed is
520 dnl 1) declared when using the c++ compiler
521 dnl 2) has "C" linkage
523 dnl argument 1 is name of function to check
525 dnl ASSUMES argument is a math function with TWO parameters
527 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
528 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
529 AC_MSG_CHECKING([for $1 declaration])
530 if test x${glibcpp_cv_func_$1_use+set} != xset; then
531 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
534 AC_TRY_COMPILE([#include <stdlib.h>],
536 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
540 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
541 if test x$glibcpp_cv_func_$1_use = x"yes"; then
548 dnl Because the builtins are picky picky picky about the arguments they take,
549 dnl do an explict linkage tests here.
550 dnl Check to see if the (math function) argument passed is
551 dnl 1) declared when using the c++ compiler
552 dnl 2) has "C" linkage
554 dnl Define HAVE_CARGF etc if "cargf" is declared and links
556 dnl argument 1 is name of function to check
558 dnl ASSUMES argument is a math function with ONE parameter
560 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
561 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
562 AC_MSG_CHECKING([for $1 declaration])
563 if test x${glibcpp_cv_func_$1_use+set} != xset; then
564 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
567 AC_TRY_COMPILE([#include <math.h>],
569 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
573 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
574 if test x$glibcpp_cv_func_$1_use = x"yes"; then
575 AC_MSG_CHECKING([for $1 linkage])
576 if test x${glibcpp_cv_func_$1_link+set} != xset; then
577 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
578 AC_TRY_LINK([#include <math.h>],
580 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
583 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
584 if test x$glibcpp_cv_func_$1_link = x"yes"; then
585 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
586 AC_DEFINE_UNQUOTED(${ac_tr_func})
593 dnl Check to see what builtin math functions are supported
595 dnl check for __builtin_abs
596 dnl check for __builtin_fabsf
597 dnl check for __builtin_fabs
598 dnl check for __builtin_fabl
599 dnl check for __builtin_labs
600 dnl check for __builtin_sqrtf
601 dnl check for __builtin_sqrtl
602 dnl check for __builtin_fsqrt
603 dnl check for __builtin_sinf
604 dnl check for __builtin_sin
605 dnl check for __builtin_sinl
606 dnl check for __builtin_cosf
607 dnl check for __builtin_cos
608 dnl check for __builtin_cosl
610 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
611 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
612 dnl Test for builtin math functions.
613 dnl These are made in gcc/c-common.c
614 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
615 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
616 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
617 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
618 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
620 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
621 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
622 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
624 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
625 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
626 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
628 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
629 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
630 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
632 dnl There is, without a doubt, a more elegant way to have these
633 dnl names exported so that they won't be stripped out of acconfig.h by
634 dnl autoheader. I leave this as an exercise to somebody less frustrated
635 dnl than I.... please email the libstdc++ list if you can figure out a
636 dnl more elegant approach (see autoconf/acgen.m4 and specifically
637 dnl AC_CHECK_FUNC for things to steal.)
639 if test x$dummyvar = x"yes"; then
640 AC_DEFINE(HAVE___BUILTIN_ABS)
641 AC_DEFINE(HAVE___BUILTIN_LABS)
642 AC_DEFINE(HAVE___BUILTIN_COS)
643 AC_DEFINE(HAVE___BUILTIN_COSF)
644 AC_DEFINE(HAVE___BUILTIN_COSL)
645 AC_DEFINE(HAVE___BUILTIN_FABS)
646 AC_DEFINE(HAVE___BUILTIN_FABSF)
647 AC_DEFINE(HAVE___BUILTIN_FABSL)
648 AC_DEFINE(HAVE___BUILTIN_SIN)
649 AC_DEFINE(HAVE___BUILTIN_SINF)
650 AC_DEFINE(HAVE___BUILTIN_SINL)
651 AC_DEFINE(HAVE___BUILTIN_FSQRT)
652 AC_DEFINE(HAVE___BUILTIN_SQRTF)
653 AC_DEFINE(HAVE___BUILTIN_SQRTL)
659 dnl Check to see what the underlying c library
660 dnl These checks need to do two things:
661 dnl 1) make sure the name is declared when using the c++ compiler
662 dnl 2) make sure the name has "C" linkage
663 dnl This might seem like overkill but experience has shown that it's not...
665 dnl Define HAVE_STRTOLD if "strtold" is declared and links
666 dnl Define HAVE_STRTOF if "strtof" is declared and links
667 dnl Define HAVE_DRAND48 if "drand48" is declared and links
669 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
670 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
671 ac_test_CXXFLAGS="${CXXFLAGS+set}"
672 ac_save_CXXFLAGS="$CXXFLAGS"
673 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
675 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
676 AC_CHECK_FUNCS(drand48)
678 CXXFLAGS="$ac_save_CXXFLAGS"
683 dnl Check to see what the underlying c library or math library is like.
684 dnl These checks need to do two things:
685 dnl 1) make sure the name is declared when using the c++ compiler
686 dnl 2) make sure the name has "C" linkage
687 dnl This might seem like overkill but experience has shown that it's not...
689 dnl Define HAVE_CARGF etc if "cargf" is found.
691 dnl GLIBCPP_CHECK_MATH_SUPPORT
692 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
693 ac_test_CXXFLAGS="${CXXFLAGS+set}"
694 ac_save_CXXFLAGS="$CXXFLAGS"
695 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
698 AC_CHECK_LIB(m, sin, libm="-lm")
702 dnl Check to see if certain C math functions exist.
703 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
704 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
705 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
706 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
707 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
708 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
712 dnl Check to see if basic C math functions have float versions.
713 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
718 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
724 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
725 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
726 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
727 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
728 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
729 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
730 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
731 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
732 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
733 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
735 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
737 dnl Check to see if basic C math functions have long double versions.
738 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
743 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
746 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
747 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
748 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
749 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
750 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
751 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
752 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
753 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
754 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
755 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
756 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
757 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
758 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
759 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
760 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
761 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
762 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
764 dnl Some runtimes have these functions with a preceding underscore. Please
765 dnl keep this sync'd with the one above. And if you add any new symbol,
766 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
767 dnl Check to see if certain C math functions exist.
769 dnl Check to see if basic C math functions have float versions.
770 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
772 _acosf _asinf _atanf \
774 _coshf _sinhf _tanhf)
775 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
779 dnl Check to see if basic C math functions have long double versions.
780 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
782 _acosl _asinl _atanl \
784 _coshl _sinhl _tanhl)
785 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
790 CXXFLAGS="$ac_save_CXXFLAGS"
795 dnl Check to see if there is native support for complex
797 dnl Don't compile bits in math/* if native support exits.
799 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
801 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
802 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
803 dnl Check for complex versions of math functions of platform.
804 AC_CHECK_LIB(m, main)
805 AC_REPLACE_MATHFUNCS(nan copysignf)
807 dnl Compile the long double complex functions only if the function
808 dnl provides the non-complex long double functions that are needed.
809 dnl Currently this includes copysignl, which should be
810 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
811 USE_COMPLEX_LONG_DOUBLE=no
812 if test x$ac_cv_func_copysignl = x"yes"; then
813 USE_COMPLEX_LONG_DOUBLE=yes
814 AC_REPLACE_MATHFUNCS(signbitl)
817 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
821 dnl Check to see what architecture and operating system we are compiling
822 dnl for. Also, if architecture- or OS-specific flags are required for
823 dnl compilation, pick them up here.
825 dnl GLIBCPP_CHECK_TARGET
826 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
827 . [$]{glibcpp_basedir}/configure.target
828 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
829 AC_MSG_RESULT(OS config directory is $os_include_dir)
834 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
835 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
836 dnl must have been previously checked.)
838 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
839 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
841 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
842 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
844 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
845 dnl others even if wchar_t support is not on.
846 AC_MSG_CHECKING([for mbstate_t])
847 AC_TRY_COMPILE([#include <wchar.h>],
848 [mbstate_t teststate;],
849 have_mbstate_t=yes, have_mbstate_t=no)
850 AC_MSG_RESULT($have_mbstate_t)
851 if test x"$have_mbstate_t" = xyes; then
852 AC_DEFINE(HAVE_MBSTATE_T)
855 dnl Sanity check for existence of ISO C99 headers for extended encoding.
856 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
857 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
859 dnl Only continue checking if the ISO C99 headers exist and support is on.
860 if test x"$ac_has_wchar_h" = xyes &&
861 test x"$ac_has_wctype_h" = xyes &&
862 test x"$enable_c_mbchar" != xno; then
864 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
865 dnl numeric_limits can instantiate type_traits<wchar_t>
866 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
867 AC_TRY_COMPILE([#include <wchar.h>],
868 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
869 has_wchar_minmax=yes, has_wchar_minmax=no)
870 AC_MSG_RESULT($has_wchar_minmax)
872 dnl Test wchar.h for WEOF, which is what we use to determine whether
873 dnl to specialize for char_traits<wchar_t> or not.
874 AC_MSG_CHECKING([for WEOF])
877 #include <stddef.h>],
879 has_weof=yes, has_weof=no)
880 AC_MSG_RESULT($has_weof)
882 dnl Tests for wide character functions used in char_traits<wchar_t>.
884 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
887 dnl Checks for names injected into std:: by the c_std headers.
888 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
889 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
890 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
891 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
892 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
893 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
896 AC_MSG_CHECKING([for ISO C99 wchar_t support])
897 if test x"$has_weof" = xyes &&
898 test x"$has_wchar_minmax" = xyes &&
899 test x"$ac_wfuncs" = xyes; then
900 ac_isoC99_wchar_t=yes
904 AC_MSG_RESULT($ac_isoC99_wchar_t)
906 dnl Use iconv for wchar_t to char conversions. As such, check for
907 dnl X/Open Portability Guide, version 2 features (XPG2).
908 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
909 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
911 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
912 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
914 LIBS="$LIBS $libiconv"
916 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
917 ac_XPG2funcs=yes, ac_XPG2funcs=no)
921 AC_MSG_CHECKING([for XPG2 wchar_t support])
922 if test x"$ac_has_iconv_h" = xyes &&
923 test x"$ac_has_langinfo_h" = xyes &&
924 test x"$ac_XPG2funcs" = xyes; then
929 AC_MSG_RESULT($ac_XPG2_wchar_t)
931 dnl At the moment, only enable wchar_t specializations if all the
932 dnl above support is present.
933 AC_MSG_CHECKING([for enabled wchar_t specializations])
934 if test x"$ac_isoC99_wchar_t" = xyes &&
935 test x"$ac_XPG2_wchar_t" = xyes; then
936 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
942 dnl Wide characters disabled by the user.
943 AC_MSG_WARN([wchar_t support disabled.])
949 dnl Check for special debugging mode; not for production use.
951 dnl GLIBCPP_ENABLE_DEBUG
952 dnl --enable-debug sets '-ggdb3 -O0'.
953 dnl --disable-debug sets '-g' and whatever optimization options the
954 dnl compiler can handle.
955 dnl + --enable-maintainer-mode automatically defaults this to on.
956 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
957 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
958 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
959 dnl defaults to `no'.
960 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
961 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
963 changequote(<<, >>)dnl
964 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
966 [case "${enableval}" in
967 yes) enable_debug=yes ;;
968 no) enable_debug=no ;;
969 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
971 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
973 dnl Option parsed, now set things appropriately
974 case "${enable_debug}" in
976 DEBUG_FLAGS='-O0 -ggdb3'
982 AC_SUBST(DEBUG_FLAGS)
987 dnl Check for "unusual" flags to pass to the compiler while building.
989 dnl GLIBCPP_ENABLE_CXX_FLAGS
990 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
991 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
992 dnl Somehow this same set of flags must be passed when [re]building
994 dnl --disable-cxx-flags passes nothing.
995 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
996 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
997 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
998 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
999 dnl If "default flags" is an empty string (or "none"), the effect is
1000 dnl the same as --disable or --enable=no.
1001 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1002 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1003 AC_ARG_ENABLE(cxx-flags,
1004 changequote(<<, >>)dnl
1005 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1006 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1007 changequote([, ])dnl
1008 [case "x$enableval" in
1010 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1012 enable_cxx_flags='' ;;
1014 enable_cxx_flags="$enableval" ;;
1016 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1018 dnl Thinko on my part during design. This kludge is the workaround.
1019 if test "$enable_cxx_flags" = "none"; then
1020 enable_cxx_flags='';
1023 dnl Run through flags (either default or command-line) and set anything
1024 dnl extra (e.g., #defines) that must accompany particular g++ options.
1025 if test -n "$enable_cxx_flags"; then
1026 for f in $enable_cxx_flags; do
1030 *) # and we're trying to pass /what/ exactly?
1031 AC_MSG_ERROR([compiler flags start with a -]) ;;
1035 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1036 AC_SUBST(EXTRA_CXX_FLAGS)
1041 dnl Check for which locale library to use: gnu or generic.
1043 dnl GLIBCPP_ENABLE_CLOCALE
1044 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1045 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1047 dnl default is generic
1049 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1050 AC_MSG_CHECKING([for clocale to use])
1051 AC_ARG_ENABLE(clocale,
1052 [ --enable-clocale enable model for target locale package.
1053 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1055 if test x$enable_clocale = xno; then
1056 enable_clocale=generic
1058 enable_clocale=generic)
1060 enable_clocale_flag=$enable_clocale
1062 dnl Check if a valid locale package
1063 case x${enable_clocale_flag} in
1065 AC_MSG_RESULT(generic)
1067 # Don't use gettext.
1070 CLOCALE_H=config/locale/c_locale_generic.h
1071 CLOCALE_CC=config/locale/c_locale_generic.cc
1072 CCODECVT_H=config/locale/codecvt_specializations_generic.h
1073 CMESSAGES_H=config/locale/messages_members_generic.h
1074 CMESSAGES_CC=config/locale/messages_members_generic.cc
1079 # Declare intention to use gettext, and add support for specific
1081 # For some reason, ALL_LINGUAS has to be before AM_GNU_GETTEXT
1083 # Don't call AM_GNU_GETTEXT here. Instead, assume glibc.
1084 # Need to deal with MSGFMT, USE_NLS, and glibcpp_[P,M]OFILES
1087 # Export the build objects.
1088 for ling in $ALL_LINGUAS; do \
1089 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1090 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1092 AC_SUBST(glibcpp_MOFILES)
1093 AC_SUBST(glibcpp_POFILES)
1095 CLOCALE_H=config/locale/c_locale_gnu.h
1096 CLOCALE_CC=config/locale/c_locale_gnu.cc
1097 CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1098 CMESSAGES_H=config/locale/messages_members_gnu.h
1099 CMESSAGES_CC=config/locale/messages_members_gnu.cc
1102 AC_MSG_RESULT(generic)
1104 # Don't use gettext.
1107 CLOCALE_H=config/locale/c_locale_ieee_1003.1-200x.h
1108 CLOCALE_CC=config/locale/c_locale_ieee_1003.1-200x.cc
1109 CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1110 CMESSAGES_H=config/locale/messages_members_ieee_1003.1-200x.h
1111 CMESSAGES_CC=config/locale/messages_members_ieee_1003.1-200x.cc
1114 echo "$enable_clocale is an unknown locale package" 1>&2
1119 # This is where the testsuite looks for locale catalogs, using the
1120 # -DLOCALEDIR define during testsuite compilation.
1121 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1122 AC_SUBST(glibcpp_localedir)
1126 AC_SUBST(CCODECVT_H)
1127 AC_SUBST(CMESSAGES_H)
1128 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1129 AC_LINK_FILES($CMESSAGES_CC, src/messages_members.cc)
1134 dnl Check for which I/O library to use: libio, or something specific.
1136 dnl GLIBCPP_ENABLE_CSTDIO
1137 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1139 dnl default is stdio
1141 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1142 AC_MSG_CHECKING([for cstdio to use])
1143 AC_ARG_ENABLE(cstdio,
1144 [ --enable-cstdio enable stdio for target io package.
1145 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1147 if test x$enable_cstdio = xno; then
1150 enable_cstdio=stdio)
1152 enable_cstdio_flag=$enable_cstdio
1154 dnl Check if a valid I/O package
1155 case x${enable_cstdio_flag} in
1157 CSTDIO_H=config/io/c_io_libio.h
1158 BASIC_FILE_H=config/io/basic_file_libio.h
1159 BASIC_FILE_CC=config/io/basic_file_libio.cc
1160 AC_MSG_RESULT(libio)
1162 # see if we are on a system with libio native (ie, linux)
1163 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1165 # Need to check and see what version of glibc is being used. If
1166 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1167 # compile most of libio for linux systems.
1168 if test x$has_libio = x"yes"; then
1171 AC_MSG_CHECKING([for glibc version >= 2.2])
1172 AC_EGREP_CPP([ok], [
1173 #include <features.h>
1174 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1177 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1178 AC_MSG_RESULT($glibc_satisfactory)
1182 # XXX at the moment, admit defeat and force the recompilation
1183 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1184 glibc_satisfactory=no
1186 if test x$glibc_satisfactory = x"yes"; then
1191 # bkoz XXX need to add checks to enable this
1192 # pme XXX here's a first pass at such a check
1193 if test x$enable_c_mbchar != xno; then
1201 # Using libio, but <libio.h> doesn't exist on the target system. . .
1203 # bkoz XXX need to add checks to enable this
1204 # pme XXX here's a first pass at such a check
1205 if test x$enable_c_mbchar != xno; then
1212 xstdio | x | xno | xnone | xyes)
1214 CSTDIO_H=config/io/c_io_stdio.h
1215 BASIC_FILE_H=config/io/basic_file_stdio.h
1216 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1217 AC_MSG_RESULT(stdio)
1219 # We're not using stdio.
1224 echo "$enable_cstdio is an unknown io package" 1>&2
1229 AC_SUBST(BASIC_FILE_H)
1230 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1232 # 2000-08-04 bkoz hack
1233 CCODECVT_C=config/io/c_io_libio_codecvt.c
1234 AC_SUBST(CCODECVT_C)
1235 # 2000-08-04 bkoz hack
1237 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1238 test "$need_libio" = yes || test "$need_wlibio" = yes)
1239 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1240 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1241 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1242 libio_la=../libio/libio.la
1251 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1252 dnl We must stage the required headers so that they will be installed
1253 dnl with the library (unlike libgcc, the STL implementation is provided
1254 dnl solely within headers). Since we must not inject random user-space
1255 dnl macro names into user-provided C++ code, we first stage into <file>-in
1256 dnl and process to <file> with an output command. The reason for a two-
1257 dnl stage process here is to correctly handle $srcdir!=$objdir without
1258 dnl having to write complex code (the sed commands to clean the macro
1259 dnl namespace are complex and fragile enough as it is). We must also
1260 dnl add a relative path so that -I- is supported properly.
1262 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1263 AC_MSG_CHECKING([for thread model used by GCC])
1264 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1265 AC_MSG_RESULT([$target_thread_file])
1267 if test $target_thread_file != single; then
1268 AC_DEFINE(HAVE_GTHR_DEFAULT)
1269 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1272 glibcpp_thread_h=gthr-$target_thread_file.h
1273 AC_SUBST(glibcpp_thread_h)
1278 dnl Check for exception handling support. If an explicit enable/disable
1279 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1280 dnl target may or may not support call frame exceptions.
1282 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1283 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1284 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1286 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1288 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1289 AC_MSG_CHECKING([for exception model to use])
1292 AC_ARG_ENABLE(sjlj-exceptions,
1293 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1295 [dnl Botheration. Now we've got to detect the exception model.
1296 dnl Link tests against libgcc.a are problematic since -- at least
1297 dnl as of this writing -- we've not been given proper -L bits for
1298 dnl single-tree newlib and libgloss.
1300 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1301 dnl conftest files before we got a change to grep them first.
1302 cat > conftest.$ac_ext << EOF
1303 [#]line __oline__ "configure"
1312 old_CXXFLAGS="$CXXFLAGS"
1314 if AC_TRY_EVAL(ac_compile); then
1315 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1316 enable_sjlj_exceptions=yes
1317 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1318 enable_sjlj_exceptions=no
1321 CXXFLAGS="$old_CXXFLAGS"
1323 if test x$enable_sjlj_exceptions = xyes; then
1324 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1325 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1326 ac_exception_model_name=sjlj
1327 elif test x$enable_sjlj_exceptions = xno; then
1328 ac_exception_model_name="call frame"
1330 AC_MSG_ERROR([unable to detect exception model])
1333 AC_MSG_RESULT($ac_exception_model_name)
1338 dnl Check for ISO/IEC 9899:1999 "C99" support.
1340 dnl GLIBCPP_ENABLE_C99
1341 dnl --enable-c99 defines _GLIBCPP_USE_C99
1342 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1343 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1344 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1345 dnl defaults to `no'.
1346 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1348 dnl GLIBCPP_ENABLE_C99
1349 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1350 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1353 changequote(<<, >>)dnl
1354 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1355 changequote([, ])dnl
1356 [case "$enableval" in
1357 yes) enable_c99=yes ;;
1358 no) enable_c99=no ;;
1359 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1361 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1366 # Check for the existence of <math.h> functions used if C99 is enabled.
1368 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1369 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1370 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1371 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1372 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1373 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1374 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1375 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1376 AC_TRY_COMPILE([#include <math.h>],
1377 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1378 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1379 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1380 AC_TRY_COMPILE([#include <math.h>],
1381 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1382 AC_TRY_COMPILE([#include <math.h>],
1383 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1384 AC_MSG_RESULT($ac_c99_math)
1386 # Check for the existence in <stdio.h> of vscanf, et. al.
1388 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1389 AC_TRY_COMPILE([#include <stdio.h>],
1390 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1391 AC_TRY_COMPILE([#include <stdio.h>
1393 void foo(char* fmt, ...)
1394 {va_list args; va_start(args, fmt);
1395 vfscanf(stderr, "%i", args);}],
1396 [],, [ac_c99_stdio=no])
1397 AC_TRY_COMPILE([#include <stdio.h>
1399 void foo(char* fmt, ...)
1400 {va_list args; va_start(args, fmt);
1401 vscanf("%i", args);}],
1402 [],, [ac_c99_stdio=no])
1403 AC_TRY_COMPILE([#include <stdio.h>
1405 void foo(char* fmt, ...)
1406 {va_list args; va_start(args, fmt);
1407 vsnprintf(fmt, 0, "%i", args);}],
1408 [],, [ac_c99_stdio=no])
1409 AC_TRY_COMPILE([#include <stdio.h>
1411 void foo(char* fmt, ...)
1412 {va_list args; va_start(args, fmt);
1413 vsscanf(fmt, "%i", args);}],
1414 [],, [ac_c99_stdio=no])
1415 AC_MSG_RESULT($ac_c99_stdio)
1417 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1419 AC_MSG_CHECKING([for lldiv_t declaration])
1420 AC_CACHE_VAL(ac_c99_lldiv_t, [
1421 AC_TRY_COMPILE([#include <stdlib.h>],
1423 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1425 AC_MSG_RESULT($ac_c99_lldiv_t)
1427 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1428 AC_TRY_COMPILE([#include <stdlib.h>],
1429 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1430 AC_TRY_COMPILE([#include <stdlib.h>],
1431 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1432 AC_TRY_COMPILE([#include <stdlib.h>],
1433 [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1434 AC_TRY_COMPILE([#include <stdlib.h>],
1435 [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
1436 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1437 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1438 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1439 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1440 if test x"$ac_c99_lldiv_t" = x"no"; then
1443 AC_MSG_RESULT($ac_c99_stdlib)
1445 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1446 # XXX the wchar.h checks should be rolled into the general C99 bits.
1448 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1449 AC_TRY_COMPILE([#include <wchar.h>],
1450 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1451 AC_TRY_COMPILE([#include <wchar.h>],
1452 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1453 AC_TRY_COMPILE([#include <wchar.h>],
1454 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1455 AC_MSG_RESULT($ac_c99_wchar)
1457 AC_MSG_CHECKING([for enabled ISO C99 support])
1458 if test x"$ac_c99_math" = x"no" ||
1459 test x"$ac_c99_stdio" = x"no" ||
1460 test x"$ac_c99_stdlib" = x"no" ||
1461 test x"$ac_c99_wchar" = x"no"; then
1464 AC_MSG_RESULT($enable_c99)
1466 # Option parsed, now set things appropriately
1467 if test x"$enable_c99" = x"yes"; then
1468 AC_DEFINE(_GLIBCPP_USE_C99)
1476 dnl Check for template specializations for the 'long long' type extension.
1477 dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
1479 dnl GLIBCPP_ENABLE_LONG_LONG
1480 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1481 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1482 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1483 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1484 dnl defaults to `no'.
1485 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1487 dnl GLIBCPP_ENABLE_LONG_LONG
1488 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1489 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1491 AC_ARG_ENABLE(long-long,
1492 changequote(<<, >>)dnl
1493 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1494 changequote([, ])dnl
1495 [case "$enableval" in
1496 yes) enable_long_long=yes ;;
1497 no) enable_long_long=no ;;
1498 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1500 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1502 # iostreams require strtoll, strtoull to compile. If the
1503 # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
1504 # go ahead and allow long long to be used.
1505 if test x"$enable_c99" = x"no"; then
1506 enable_long_long=no;
1509 # Option parsed, now set things appropriately
1510 AC_MSG_CHECKING([for enabled long long support])
1511 if test x"$enable_long_long" = xyes; then
1512 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1514 AC_MSG_RESULT($enable_long_long)
1519 dnl Check for what kind of C headers to use.
1521 dnl GLIBCPP_ENABLE_CHEADERS
1522 dnl --enable-cheaders= [does stuff].
1523 dnl --disable-cheaders [does not do anything, really].
1524 dnl + This will eventually need to be 'c_shadow' by default.
1525 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1526 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1527 dnl If ommitted, it defaults to `c_std'.
1528 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1529 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1530 AC_MSG_CHECKING([for c header strategy to use])
1531 AC_ARG_ENABLE(cheaders,
1532 changequote(<<, >>)dnl
1533 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1535 [case "$enableval" in
1540 enable_cheaders=c_std
1543 enable_cheaders=c_shadow
1545 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1548 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1549 AC_MSG_RESULT($enable_cheaders)
1551 dnl Option parsed, now set things appropriately
1552 case "$enable_cheaders" in
1554 CSHADOW_FLAGS="-fno-builtin"
1555 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1556 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1560 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1564 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1568 AC_SUBST(CSHADOW_FLAGS)
1569 AC_SUBST(C_INCLUDE_DIR)
1570 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1575 dnl Check for wide character support. Has the same effect as the option
1576 dnl in gcc's configure, but in a form that autoconf can mess with.
1578 dnl GLIBCPP_ENABLE_C_MBCHAR
1579 dnl --enable-c-mbchar requests all the wchar_t stuff.
1580 dnl --disable-c-mbchar doesn't.
1581 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1582 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1583 dnl defaults to `no'.
1584 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1585 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1586 AC_ARG_ENABLE(c-mbchar,
1587 changequote(<<, >>)dnl
1588 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1589 changequote([, ])dnl
1590 [case "$enableval" in
1591 yes) enable_c_mbchar=yes ;;
1592 no) enable_c_mbchar=no ;;
1593 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1595 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1596 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1601 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1603 dnl TOPLEVEL_INCLUDES
1604 dnl LIBMATH_INCLUDES
1605 dnl LIBSUPCXX_INCLUDES
1607 dnl CSHADOW_INCLUDES
1609 dnl GLIBCPP_EXPORT_INCLUDES
1610 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1611 # Root level of the build directory include sources.
1612 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1614 # Passed down for canadian crosses.
1615 if test x"$CANADIAN" = xyes; then
1616 TOPLEVEL_INCLUDES='-I$(includedir)'
1619 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1621 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1623 if test x"$need_libio" = xyes; then
1624 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1625 AC_SUBST(LIBIO_INCLUDES)
1628 # Now, export this to all the little Makefiles....
1629 AC_SUBST(GLIBCPP_INCLUDES)
1630 AC_SUBST(TOPLEVEL_INCLUDES)
1631 AC_SUBST(LIBMATH_INCLUDES)
1632 AC_SUBST(LIBSUPCXX_INCLUDES)
1637 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1639 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1640 # Optimization flags that are probably a good idea for thrill-seekers. Just
1641 # uncomment the lines below and make, everything else is ready to go...
1642 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1644 AC_SUBST(OPTIMIZE_CXXFLAGS)
1646 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1647 AC_SUBST(WARN_FLAGS)
1651 dnl GLIBCPP_EXPORT_INSTALL_INFO
1652 dnl calculates gxx_install_dir
1653 dnl exports glibcpp_toolexecdir
1654 dnl exports glibcpp_toolexeclibdir
1655 dnl exports glibcpp_prefixdir
1657 dnl Assumes cross_compiling bits already done, and with_cross_host in
1660 dnl GLIBCPP_EXPORT_INSTALL_INFO
1661 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1662 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1663 # exported correctly in GLIBCPP_CONFIGURE.
1664 glibcpp_toolexecdir=no
1665 glibcpp_toolexeclibdir=no
1666 glibcpp_prefixdir=${prefix}
1668 AC_MSG_CHECKING([for interface version number])
1669 libstdcxx_interface=$INTERFACE
1670 AC_MSG_RESULT($libstdcxx_interface)
1672 # Process the option --with-gxx-include-dir=<path to include-files directory>
1673 AC_MSG_CHECKING([for --with-gxx-include-dir])
1674 AC_ARG_WITH(gxx-include-dir,
1675 [ --with-gxx-include-dir the installation directory for include files],
1676 [case "${withval}" in
1678 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1685 gxx_include_dir=${withval}
1687 esac], [gxx_include_dir=no])
1688 AC_MSG_RESULT($gxx_include_dir)
1690 # Process the option "--enable-version-specific-runtime-libs"
1691 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1692 AC_ARG_ENABLE(version-specific-runtime-libs,
1693 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1694 [ version_specific_libs=yes
1695 # Need the gcc compiler version to know where to install libraries
1696 # and header files if --enable-version-specific-runtime-libs option
1699 gcc_version_trigger=${srcdir}/../gcc/version.c
1700 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1701 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1702 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1703 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1704 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1706 ],version_specific_libs=no)
1707 AC_MSG_RESULT($version_specific_libs)
1709 # Default case for install directory for include files.
1710 if test x"$version_specific_libs" = x"no" \
1711 && test x"$gxx_include_dir" = x"no"; then
1712 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1715 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1716 # Install a library built with a cross compiler in tooldir, not libdir.
1717 if test x"$glibcpp_toolexecdir" = x"no"; then
1718 if test -n "$with_cross_host" &&
1719 test x"$with_cross_host" != x"no"; then
1720 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1721 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1723 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1724 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1728 AC_MSG_CHECKING([for install location])
1729 AC_MSG_RESULT($gxx_include_dir)
1731 AC_SUBST(glibcpp_prefixdir)
1732 AC_SUBST(gxx_include_dir)
1733 AC_SUBST(glibcpp_toolexecdir)
1734 AC_SUBST(glibcpp_toolexeclibdir)
1738 # Check for functions in math library.
1739 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1741 # This file can be copied and used freely without restrictions. It can
1742 # be used in projects which are not available under the GNU Public License
1743 # but which still want to provide support for the GNU gettext functionality.
1744 # Please note that the actual code is *not* freely available.
1748 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1749 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1750 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1751 AC_SUBST(LIBMATHOBJS)dnl
1756 dnl This macro searches for a GNU version of make. If a match is found, the
1757 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1758 dnl set to "#". This is useful for including a special features in a Makefile,
1759 dnl which cannot be handled by other versions of make. The variable
1760 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1761 dnl the empty string otherwise.
1763 dnl Here is an example of its use:
1765 dnl Makefile.in might contain:
1767 dnl # A failsafe way of putting a dependency rule into a makefile
1769 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1771 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1772 dnl @ifGNUmake@ include $(DEPEND)
1773 dnl @ifGNUmake@ endif
1775 dnl Then configure.in would normally contain:
1777 dnl CHECK_GNU_MAKE()
1778 dnl AC_OUTPUT(Makefile)
1780 dnl Then perhaps to cause gnu make to override any other make, we could do
1781 dnl something like this (note that GNU make always looks for GNUmakefile first):
1783 dnl if ! test x$_cv_gnu_make_command = x ; then
1784 dnl mv Makefile GNUmakefile
1785 dnl echo .DEFAULT: > Makefile ;
1786 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1789 dnl Then, if any (well almost any) other make is called, and GNU make also
1790 dnl exists, then the other make wraps the GNU make.
1792 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1793 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1795 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1796 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1797 dnl #### conditional's subshell (" --version" is not a command), using a
1798 dnl #### different option to grep(1).
1800 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1801 dnl #### ${MAKE:-make}).
1804 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1805 _cv_gnu_make_command='' ;
1806 dnl Search all the common names for GNU make
1807 for a in "${MAKE-make}" make gmake gnumake ; do
1808 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1810 _cv_gnu_make_command=$a ;
1815 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1816 dnl string, '#' otherwise
1817 if test "x$_cv_gnu_make_command" != "x" ; then
1826 dnl Check for headers for, and arguments to, the setrlimit() function.
1827 dnl Used only in testsuite_hooks.h.
1828 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1829 AC_TRY_COMPILE([#include <sys/resource.h>
1831 ], [ int f = RLIMIT_$1 ; ],
1832 [glibcpp_mresult=1], [glibcpp_mresult=0])
1833 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1834 [Only used in build directory testsuite_hooks.h.])
1836 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1837 setrlimit_have_headers=yes
1838 AC_CHECK_HEADERS(sys/resource.h unistd.h,
1840 setrlimit_have_headers=no)
1841 # If don't have the headers, then we can't run the tests now, and we
1842 # won't be seeing any of these during testsuite compilation.
1843 if test $setrlimit_have_headers = yes; then
1844 # Can't do these in a loop, else the resulting syntax is wrong.
1845 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1846 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1847 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1848 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1850 # Check for rlimit, setrlimit.
1851 AC_CACHE_VAL(ac_setrlimit, [
1852 AC_TRY_COMPILE([#include <sys/resource.h>
1855 [ struct rlimit r; setrlimit(0, &r);],
1856 [ac_setrlimit=yes], [ac_setrlimit=no])
1860 AC_MSG_CHECKING([for testsuite memory limit support])
1861 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
1863 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
1867 AC_MSG_RESULT($ac_mem_limits)
1872 dnl Does any necessary configuration of the testsuite directory. Generates
1873 dnl the testsuite_hooks.h header.
1875 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
1876 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
1877 GLIBCPP_CHECK_SETRLIMIT
1881 sinclude(../libtool.m4)
1882 dnl The lines below arrange for aclocal not to bring an installed
1883 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1884 dnl add a definition of LIBTOOL to Makefile.in.
1885 ifelse(,,,[AC_SUBST(LIBTOOL)
1886 AC_DEFUN([AM_PROG_LIBTOOL])
1887 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1888 AC_DEFUN([AC_PROG_LD])
1892 # Check whether LC_MESSAGES is available in <locale.h>.
1893 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1895 # This file file be copied and used freely without restrictions. It can
1896 # be used in projects which are not available under the GNU Public License
1897 # but which still want to provide support for the GNU gettext functionality.
1898 # Please note that the actual code is *not* freely available.
1902 AC_DEFUN(AC_LC_MESSAGES, [
1903 AC_CHECK_HEADER(locale.h, [
1904 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1905 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1906 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1907 if test $ac_cv_val_LC_MESSAGES = yes; then
1908 AC_DEFINE(HAVE_LC_MESSAGES)
1914 # Add --enable-maintainer-mode option to configure.
1919 AC_DEFUN(AM_MAINTAINER_MODE,
1920 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1921 dnl maintainer-mode is disabled by default
1922 AC_ARG_ENABLE(maintainer-mode,
1923 [ --enable-maintainer-mode enable make rules and dependencies not useful
1924 (and sometimes confusing) to the casual installer],
1925 USE_MAINTAINER_MODE=$enableval,
1926 USE_MAINTAINER_MODE=no)
1927 AC_MSG_RESULT($USE_MAINTAINER_MODE)
1928 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
1929 MAINT=$MAINTAINER_MODE_TRUE
1934 # Define a conditional.
1936 AC_DEFUN(AM_CONDITIONAL,
1947 # Macro to add for using GNU gettext.
1948 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1950 # This file can be copied and used freely without restrictions. It can
1951 # be used in projects which are not available under the GNU Public License
1952 # but which still want to provide support for the GNU gettext functionality.
1953 # Please note that the actual code is *not* freely available.
1957 AC_DEFUN(AM_WITH_NLS,
1958 [AC_MSG_CHECKING([whether NLS is requested])
1959 dnl Default is enabled NLS
1961 [ --disable-nls do not use Native Language Support],
1962 USE_NLS=$enableval, USE_NLS=yes)
1963 AC_MSG_RESULT($USE_NLS)
1966 USE_INCLUDED_LIBINTL=no
1968 dnl If we use NLS figure out what method
1969 if test "$USE_NLS" = "yes"; then
1970 AC_DEFINE(ENABLE_NLS)
1971 AC_MSG_CHECKING([whether included gettext is requested])
1972 AC_ARG_WITH(included-gettext,
1973 [ --with-included-gettext use the GNU gettext library included here],
1974 nls_cv_force_use_gnu_gettext=$withval,
1975 nls_cv_force_use_gnu_gettext=no)
1976 AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
1978 nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
1979 if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
1980 dnl User does not insist on using GNU NLS library. Figure out what
1981 dnl to use. If gettext or catgets are available (in this order) we
1982 dnl use this. Else we have to fall back to GNU NLS library.
1983 dnl catgets is only used if permitted by option --with-catgets.
1985 nls_cv_header_libgt=
1988 AC_CHECK_HEADER(libintl.h,
1989 [AC_CACHE_CHECK([for gettext in libc], gt_cv_func_gettext_libc,
1990 [AC_TRY_LINK([#include <libintl.h>], [return (int) gettext ("")],
1991 gt_cv_func_gettext_libc=yes, gt_cv_func_gettext_libc=no)])
1993 if test "$gt_cv_func_gettext_libc" != "yes"; then
1994 AC_CHECK_LIB(intl, bindtextdomain,
1995 [AC_CACHE_CHECK([for gettext in libintl],
1996 gt_cv_func_gettext_libintl,
1997 [AC_CHECK_LIB(intl, gettext,
1998 gt_cv_func_gettext_libintl=yes,
1999 gt_cv_func_gettext_libintl=no)],
2000 gt_cv_func_gettext_libintl=no)])
2003 if test "$gt_cv_func_gettext_libc" = "yes" \
2004 || test "$gt_cv_func_gettext_libintl" = "yes"; then
2005 AC_DEFINE(HAVE_GETTEXT)
2006 AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2007 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)dnl
2008 if test "$MSGFMT" != "no"; then
2009 AC_CHECK_FUNCS(dcgettext)
2010 AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2011 AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2012 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2013 AC_TRY_LINK(, [extern int _nl_msg_cat_cntr;
2014 return _nl_msg_cat_cntr],
2024 if test "$CATOBJEXT" = "NONE"; then
2025 AC_MSG_CHECKING([whether catgets can be used])
2026 AC_ARG_WITH(catgets,
2027 [ --with-catgets use catgets functions if available],
2028 nls_cv_use_catgets=$withval, nls_cv_use_catgets=no)
2029 AC_MSG_RESULT($nls_cv_use_catgets)
2031 if test "$nls_cv_use_catgets" = "yes"; then
2032 dnl No gettext in C library. Try catgets next.
2033 AC_CHECK_LIB(i, main)
2034 AC_CHECK_FUNC(catgets,
2035 [AC_DEFINE(HAVE_CATGETS)
2036 INTLOBJS="\$(CATOBJS)"
2037 AC_PATH_PROG(GENCAT, gencat, no)dnl
2038 if test "$GENCAT" != "no"; then
2039 AC_PATH_PROG(GMSGFMT, gmsgfmt, no)
2040 if test "$GMSGFMT" = "no"; then
2041 AM_PATH_PROG_WITH_TEST(GMSGFMT, msgfmt,
2042 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)
2044 AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2045 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2046 USE_INCLUDED_LIBINTL=yes
2050 INTLDEPS='$(top_builddir)/intl/libintl.a'
2052 LIBS=`echo $LIBS | sed -e 's/-lintl//'`
2053 nls_cv_header_intl=intl/libintl.h
2054 nls_cv_header_libgt=intl/libgettext.h
2059 if test "$CATOBJEXT" = "NONE"; then
2060 dnl Neither gettext nor catgets in included in the C library.
2061 dnl Fall back on GNU gettext library.
2062 nls_cv_use_gnu_gettext=yes
2066 if test "$nls_cv_use_gnu_gettext" = "yes"; then
2067 dnl Mark actions used to generate GNU NLS library.
2068 INTLOBJS="\$(GETTOBJS)"
2069 AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
2070 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt)
2071 AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
2072 AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
2073 [test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
2075 USE_INCLUDED_LIBINTL=yes
2079 INTLDEPS='$(top_builddir)/intl/libintl.a'
2081 LIBS=`echo $LIBS | sed -e 's/-lintl//'`
2082 nls_cv_header_intl=intl/libintl.h
2083 nls_cv_header_libgt=intl/libgettext.h
2086 dnl Test whether we really found GNU xgettext.
2087 if test "$XGETTEXT" != ":"; then
2088 dnl If it is no GNU xgettext we define it as : so that the
2089 dnl Makefiles still can work.
2090 if $XGETTEXT --omit-header /dev/null 2> /dev/null; then
2094 [found xgettext program is not GNU xgettext; ignore it])
2099 # We need to process the po/ directory.
2103 nls_cv_header_intl=intl/libintl.h
2104 nls_cv_header_libgt=intl/libgettext.h
2106 AC_LINK_FILES($nls_cv_header_libgt, $nls_cv_header_intl)
2108 [case "$CONFIG_FILES" in *po/Makefile.in*)
2109 sed -e "/POTFILES =/r po/POTFILES" po/Makefile.in > po/Makefile
2113 # If this is used in GNU gettext we have to set USE_NLS to `yes'
2114 # because some of the sources are only built for this goal.
2115 if test "$PACKAGE" = gettext; then
2117 USE_INCLUDED_LIBINTL=yes
2120 dnl These rules are solely for the distribution goal. While doing this
2121 dnl we only have to keep exactly one list of the available catalogs
2122 dnl in configure.in.
2123 for lang in $ALL_LINGUAS; do
2124 GMOFILES="$GMOFILES $lang.gmo"
2125 POFILES="$POFILES $lang.po"
2128 dnl Make all variables we use known to autoconf.
2129 AC_SUBST(USE_INCLUDED_LIBINTL)
2132 AC_SUBST(DATADIRNAME)
2134 AC_SUBST(INSTOBJEXT)
2142 AC_DEFUN(AM_GNU_GETTEXT,
2143 [AC_REQUIRE([AC_PROG_MAKE_SET])dnl
2144 AC_REQUIRE([AC_PROG_CC])dnl
2145 AC_REQUIRE([AC_PROG_RANLIB])dnl
2146 AC_REQUIRE([AC_ISC_POSIX])dnl
2147 AC_REQUIRE([AC_HEADER_STDC])dnl
2148 AC_REQUIRE([AC_C_CONST])dnl
2149 AC_REQUIRE([AC_C_INLINE])dnl
2150 AC_REQUIRE([AC_TYPE_OFF_T])dnl
2151 AC_REQUIRE([AC_TYPE_SIZE_T])dnl
2152 AC_REQUIRE([AC_FUNC_ALLOCA])dnl
2153 AC_REQUIRE([AC_FUNC_MMAP])dnl
2155 AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h string.h \
2156 unistd.h sys/param.h])
2157 AC_CHECK_FUNCS([getcwd munmap putenv setenv setlocale strchr strcasecmp \
2158 strdup __argz_count __argz_stringify __argz_next])
2160 if test "${ac_cv_func_stpcpy+set}" != "set"; then
2161 AC_CHECK_FUNCS(stpcpy)
2163 if test "${ac_cv_func_stpcpy}" = "yes"; then
2164 AC_DEFINE(HAVE_STPCPY)
2170 if test "x$CATOBJEXT" != "x"; then
2171 if test "x$ALL_LINGUAS" = "x"; then
2174 AC_MSG_CHECKING(for catalogs to be installed)
2176 for lang in ${LINGUAS=$ALL_LINGUAS}; do
2177 case "$ALL_LINGUAS" in
2178 *$lang*) NEW_LINGUAS="$NEW_LINGUAS $lang" ;;
2181 LINGUAS=$NEW_LINGUAS
2182 AC_MSG_RESULT($LINGUAS)
2185 dnl Construct list of names of catalog files to be constructed.
2186 if test -n "$LINGUAS"; then
2187 for lang in $LINGUAS; do CATALOGS="$CATALOGS $lang$CATOBJEXT"; done
2191 dnl The reference to <locale.h> in the installed <libintl.h> file
2192 dnl must be resolved because we cannot expect the users of this
2193 dnl to define HAVE_LOCALE_H.
2194 if test $ac_cv_header_locale_h = yes; then
2195 INCLUDE_LOCALE_H="#include <locale.h>"
2198 /* The system does not provide the header <locale.h>. Take care yourself. */"
2200 AC_SUBST(INCLUDE_LOCALE_H)
2202 dnl Determine which catalog format we have (if any is needed)
2203 dnl For now we know about two different formats:
2204 dnl Linux libc-5 and the normal X/Open format
2205 test -d intl || mkdir intl
2206 if test "$CATOBJEXT" = ".cat"; then
2207 AC_CHECK_HEADER(linux/version.h, msgformat=linux, msgformat=xopen)
2209 dnl Transform the SED scripts while copying because some dumb SEDs
2210 dnl cannot handle comments.
2211 sed -e '/^#/d' $srcdir/intl/$msgformat-msg.sed > intl/po2msg.sed
2213 dnl po2tbl.sed is always needed.
2214 sed -e '/^#.*[^\\]$/d' -e '/^#$/d' \
2215 $srcdir/intl/po2tbl.sed.in > intl/po2tbl.sed
2217 dnl In the intl/Makefile.in we have a special dependency which makes
2218 dnl only sense for gettext. We comment this out for non-gettext
2220 if test "$PACKAGE" = "gettext"; then
2230 dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
2231 dnl find the mkinstalldirs script in another subdir but ($top_srcdir).
2232 dnl Try to locate is.
2234 if test -n "$ac_aux_dir"; then
2235 MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs"
2237 if test -z "$MKINSTALLDIRS"; then
2238 MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
2240 AC_SUBST(MKINSTALLDIRS)
2242 dnl *** For now the libtool support in intl/Makefile is not for real.
2246 dnl Generate list of files to be processed by xgettext which will
2247 dnl be included in po/Makefile.
2248 test -d po || mkdir po
2249 if test "x$srcdir" != "x."; then
2250 if test "x`echo $srcdir | sed 's@/.*@@'`" = "x"; then
2251 posrcprefix="$srcdir/"
2253 posrcprefix="../$srcdir/"
2259 sed -e "/^#/d" -e "/^\$/d" -e "s,.*, $posrcprefix& \\\\," -e "\$s/\(.*\) \\\\/\1/" \
2260 < $srcdir/po/POTFILES.in > po/POTFILES
2263 # Search path for a program which passes the given test.
2264 # Ulrich Drepper <drepper@cygnus.com>, 1996.
2266 # This file can be copied and used freely without restrictions. It can
2267 # be used in projects which are not available under the GNU Public License
2268 # but which still want to provide support for the GNU gettext functionality.
2269 # Please note that the actual code is *not* freely available.
2273 dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
2274 dnl TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
2275 AC_DEFUN(AM_PATH_PROG_WITH_TEST,
2276 [# Extract the first word of "$2", so it can be a program name with args.
2277 set dummy $2; ac_word=[$]2
2278 AC_MSG_CHECKING([for $ac_word])
2279 AC_CACHE_VAL(ac_cv_path_$1,
2282 ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
2285 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
2286 for ac_dir in ifelse([$5], , $PATH, [$5]); do
2287 test -z "$ac_dir" && ac_dir=.
2288 if test -f $ac_dir/$ac_word; then
2290 ac_cv_path_$1="$ac_dir/$ac_word"
2296 dnl If no 4th arg is given, leave the cache variable unset,
2297 dnl so AC_PATH_PROGS will keep looking.
2298 ifelse([$4], , , [ test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
2303 if test -n "[$]$1"; then
2304 AC_MSG_RESULT([$]$1)
2311 # Check whether LC_MESSAGES is available in <locale.h>.
2312 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2314 # This file can be copied and used freely without restrictions. It can
2315 # be used in projects which are not available under the GNU Public License
2316 # but which still want to provide support for the GNU gettext functionality.
2317 # Please note that the actual code is *not* freely available.
2321 AC_DEFUN(AM_LC_MESSAGES,
2322 [if test $ac_cv_header_locale_h = yes; then
2323 AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
2324 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2325 am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
2326 if test $am_cv_val_LC_MESSAGES = yes; then
2327 AC_DEFINE(HAVE_LC_MESSAGES)
2331 # Do all the work for Automake. This macro actually does too much --
2332 # some checks are only needed if your package does certain things.
2333 # But this isn't really a big deal.
2338 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2340 AC_DEFUN(AM_INIT_AUTOMAKE,
2341 [AC_REQUIRE([AC_PROG_INSTALL])
2346 dnl test to see if srcdir already configured
2347 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2348 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2351 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2352 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2353 AC_REQUIRE([AM_SANITY_CHECK])
2354 AC_REQUIRE([AC_ARG_PROGRAM])
2355 dnl FIXME This is truly gross.
2356 missing_dir=`cd $ac_aux_dir && pwd`
2357 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
2358 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2359 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
2360 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2361 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2362 AC_REQUIRE([AC_PROG_MAKE_SET])])
2365 # Check to make sure that the build environment is sane.
2368 AC_DEFUN(AM_SANITY_CHECK,
2369 [AC_MSG_CHECKING([whether build environment is sane])
2372 echo timestamp > conftestfile
2373 # Do `set' in a subshell so we don't clobber the current shell's
2374 # arguments. Must try -L first in case configure is actually a
2375 # symlink; some systems play weird games with the mod time of symlinks
2376 # (eg FreeBSD returns the mod time of the symlink's containing
2379 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2380 if test "[$]*" = "X"; then
2382 set X `ls -t $srcdir/configure conftestfile`
2384 if test "[$]*" != "X $srcdir/configure conftestfile" \
2385 && test "[$]*" != "X conftestfile $srcdir/configure"; then
2387 # If neither matched, then we have a broken ls. This can happen
2388 # if, for instance, CONFIG_SHELL is bash and it inherits a
2389 # broken ls alias from the environment. This has actually
2390 # happened. Such a system could not be considered "sane".
2391 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
2392 alias in your environment])
2395 test "[$]2" = conftestfile
2401 AC_MSG_ERROR([newly created file is older than distributed files!
2402 Check your system clock])
2405 AC_MSG_RESULT(yes)])
2407 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2408 dnl The program must properly implement --version.
2409 AC_DEFUN(AM_MISSING_PROG,
2410 [AC_MSG_CHECKING(for working $2)
2411 # Run test in a subshell; some versions of sh will print an error if
2412 # an executable is not found, even if stderr is redirected.
2413 # Redirect stdin to placate older versions of autoconf. Sigh.
2414 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2416 AC_MSG_RESULT(found)
2419 AC_MSG_RESULT(missing)
2423 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2425 AC_DEFUN(AM_CONFIG_HEADER,
2427 AC_CONFIG_HEADER([$1])
2428 dnl When config.status generates a header, we must update the stamp-h file.
2429 dnl This file resides in the same directory as the config header
2430 dnl that is generated. We must strip everything past the first ":",
2431 dnl and everything past the last "/".
2432 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2433 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2434 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2436 for am_file in <<$1>>; do
2437 case " <<$>>CONFIG_HEADERS " in
2438 *" <<$>>am_file "*<<)>>
2439 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2442 am_indx=`expr "<<$>>am_indx" + 1`