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# mbswidth.m4 serial 14
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dnl Copyright (C) 2000-2002, 2004, 2006, 2007 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl autoconf tests required for use of mbswidth.c
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AC_DEFUN([gl_MBSWIDTH],
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AC_CHECK_HEADERS_ONCE([wchar.h])
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AC_CHECK_FUNCS_ONCE([isascii mbsinit])
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dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth()
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dnl that clashes with ours.
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AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>],
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ac_cv_have_decl_mbswidth,
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
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char *p = (char *) mbswidth;
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], ac_cv_have_decl_mbswidth=yes, ac_cv_have_decl_mbswidth=no)])
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if test $ac_cv_have_decl_mbswidth = yes; then
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AC_DEFINE_UNQUOTED(HAVE_DECL_MBSWIDTH_IN_WCHAR_H, $ac_val,
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[Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0 otherwise.])