diff -Naru clockspeed-0.62.orig/clockview.c clockspeed-0.62/clockview.c
--- clockspeed-0.62.orig/clockview.c	1998-10-14 02:37:49.000000000 +0900
+++ clockspeed-0.62/clockview.c	2007-05-09 03:15:29.000000000 +0900
@@ -1,5 +1,6 @@
 #include <sys/types.h>
 #include <sys/time.h>
+#include <time.h>
 #include "substdio.h"
 #include "readwrite.h"
 #include "strerr.h"
diff -Naru clockspeed-0.62.orig/error.h clockspeed-0.62/error.h
--- clockspeed-0.62.orig/error.h	1998-10-14 02:37:49.000000000 +0900
+++ clockspeed-0.62/error.h	2007-05-09 03:15:29.000000000 +0900
@@ -1,7 +1,7 @@
 #ifndef ERROR_H
 #define ERROR_H
 
-extern int errno;
+#include <errno.h>
 
 extern int error_intr;
 extern int error_nomem;