--- headers.h.orig	Tue Feb 18 13:39:00 1997
+++ headers.h	Sat Nov  1 08:55:42 1997
@@ -12,4 +12,7 @@
 #include <signal.h>
 #include <errno.h>
 #include <sys/ioctl.h>
+#ifdef __FreeBSD__
+extern char* cuserid(char*);
+#endif
 }