--- editline/editline.c.orig
+++ editline/editline.c
@@ -64,6 +64,7 @@
 #include "editline.h"
 #include <signal.h>
 #include <ctype.h>
+#include <unistd.h>
 
 /*
 **  Manifest constants.
@@ -154,8 +155,6 @@
 **  Declarations.
 */
 STATIC CHAR	*editinput();
-extern int	read();
-extern int	write();
 #if	defined(USE_TERMCAP)
 extern char	*getenv();
 extern char	*tgetstr();