--- sysdep.h.orig	1996-03-19 04:44:33 UTC
+++ sysdep.h
@@ -154,6 +154,7 @@
 # define USE_FSYNC	1
 # define USE_FSTAT	1
 # define USE_FCHMOD	1
+# define USE_CTYPE	1
 #endif
 
 #ifdef IRIX