We need macglue on MacPython-OS9 too.

jackjansen · jackjansen · commit 747c3d3f0242 · 2002-12-13T15:20:53.000Z
diff --git a/Modules/_localemodule.c b/Modules/_localemodule.c
@@ -30,7 +30,7 @@ This software comes with no warranty. Use at your own risk.
 #include <windows.h>
 #endif
 
-#if __APPLE__
+#if defined(__APPLE__) || defined(__MWERKS__)
 #include "macglue.h"
 #endif
 
