+#if wxUSE_ARCHIVE_STREAMS
+# if !wxUSE_DATETIME
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "wxArchive requires wxUSE_DATETIME"
+# else
+# undef wxUSE_ARCHIVE_STREAMS
+# define wxUSE_ARCHIVE_STREAMS 0
+# endif
+# endif
+#endif /* wxUSE_ARCHIVE_STREAMS */
+