--- cellbox.h.orig	Thu Mar 21 16:46:28 1991
+++ cellbox.h	Tue Sep 28 13:08:54 1999
@@ -32,6 +32,8 @@
 #define MAXOFF		8192	/* max # cells we can change to off per move */
 #define BOXSIZE         8
 
+/* to avoid conflict with system function in unistd.h */
+#define link xlife_link
 extern cellbox *link();
 extern cellbox *head;
 extern cellbox *freep;
