--- a/cursors.c	2002-11-08 00:10:19.000000000 +0100
+++ b/cursors.c	2010-09-17 02:53:48.000000000 +0200
@@ -3,6 +3,7 @@
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/cursorfont.h>
+#include <unistd.h> /* usleep() */
 
 #define CURSORS 4
 
--- a/procstat.c	2002-10-30 17:59:35.000000000 +0100
+++ b/procstat.c	2010-09-17 02:53:48.000000000 +0200
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h> /* strtoul() */
 
 #if defined(hpux)
 
--- a/version.c	2002-10-30 17:59:35.000000000 +0100
+++ b/version.c	2010-09-17 02:53:48.000000000 +0200
@@ -1,5 +1,6 @@
 #include "version.h"
 #include <string.h>
+#include <ctype.h> /* isalnum() */
 
 #define RELEASE_SIZE 80
 
--- a/xdaf.c	2002-11-02 14:44:02.000000000 +0100
+++ b/xdaf.c	2010-09-17 02:53:48.000000000 +0200
@@ -1,5 +1,6 @@
 #include <unistd.h>
 #include <stdio.h>
+#include <stdlib.h> /* exit() */
 #include <X11/Xlib.h>
 #include <X11/Intrinsic.h>
 #include <X11/StringDefs.h>