check consistency of the settings
*/
+#if WXWIN_COMPATIBILITY_2_4
+# if !WXWIN_COMPATIBILITY_2_6
+# ifdef wxABORT_ON_CONFIG_ERROR
+# error "2.4.X compatibility requires 2.6.X compatibility"
+# else
+# undef WXWIN_COMPATIBILITY_2_6
+# define WXWIN_COMPATIBILITY_2_6 1
+# endif
+# endif
+#endif /* WXWIN_COMPATIBILITY_2_4 */
+
#if wxUSE_ARCHIVE_STREAMS
# if !wxUSE_DATETIME
# ifdef wxABORT_ON_CONFIG_ERROR