source: trunk/essentials/app-arch/tar/m4/mbrtowc.m4

Last change on this file was 3342, checked in by bird, 18 years ago

tar 1.16.1

File size: 1.1 KB
Line 
1# mbrtowc.m4 serial 8
2dnl Copyright (C) 2001-2002, 2004-2005 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl From Paul Eggert
8
9dnl This file can be removed, and gl_FUNC_MBRTOWC replaced with
10dnl AC_FUNC_MBRTOWC, when autoconf 2.60 can be assumed everywhere.
11
12AC_DEFUN([gl_FUNC_MBRTOWC],
13[
14 dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60.
15 AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared],
16 gl_cv_func_mbrtowc,
17 [AC_LINK_IFELSE(
18 [AC_LANG_PROGRAM(
19 [[#include <wchar.h>]],
20 [[wchar_t wc;
21 char const s[] = "";
22 size_t n = 1;
23 mbstate_t state;
24 return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])],
25 gl_cv_func_mbrtowc=yes,
26 gl_cv_func_mbrtowc=no)])
27 if test $gl_cv_func_mbrtowc = yes; then
28 AC_DEFINE([HAVE_MBRTOWC], 1,
29 [Define to 1 if mbrtowc and mbstate_t are properly declared.])
30 fi
31])
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