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+/* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
+
+ Copyright (C) 2007-2008 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+/* Written by Eric Blake. */
+
+/*
+ * ISO C 99 <wchar.h> for platforms that have issues.
+ * <http://www.opengroup.org/susv3xbd/wchar.h.html>
+ *
+ * For now, this just ensures proper prerequisite inclusion order and
+ * the declaration of wcwidth().
+ */
+
+#ifdef __need_mbstate_t
+/* Special invocation convention inside uClibc header files. */
+
+#@INCLUDE_NEXT@ @NEXT_WCHAR_H@
+
+#else
+/* Normal invocation convention. */
+
+#ifndef _GL_WCHAR_H
+
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+ included before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+
+/* Include the original <wchar.h> if it exists.
+ Some builds of uClibc lack it. */
+/* The include_next requires a split double-inclusion guard. */
+#if @HAVE_WCHAR_H@
+# @INCLUDE_NEXT@ @NEXT_WCHAR_H@
+#endif
+
+#ifndef _GL_WCHAR_H
+#define _GL_WCHAR_H
+
+/* The definition of GL_LINK_WARNING is copied here. */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Return the number of screen columns needed for WC. */
+#if @GNULIB_WCWIDTH@
+# if @REPLACE_WCWIDTH@
+# undef wcwidth
+# define wcwidth rpl_wcwidth
+extern int wcwidth (wchar_t);
+# else
+# if !defined wcwidth && !@HAVE_DECL_WCWIDTH@
+/* wcwidth exists but is not declared. */
+extern int wcwidth (int /* actually wchar_t */);
+# endif
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef wcwidth
+# define wcwidth(w) \
+ (GL_LINK_WARNING ("wcwidth is unportable - " \
+ "use gnulib module wcwidth for portability"), \
+ wcwidth (w))
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_WCHAR_H */
+#endif /* _GL_WCHAR_H */
+#endif