+/* Avoid a clash of our mbswidth() with a function of the same name defined
+ in UnixWare 7.1.1 <wchar.h>. We need this #include before the #define
+ below.
+ However, we don't want to #include <wchar.h> on all platforms because
+ - Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ - BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
+ <wchar.h>. */
+#if HAVE_DECL_MBSWIDTH_IN_WCHAR_H
+# include <wchar.h>
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+