--- bounce.c.orig	Sun Sep 20 15:44:41 1998
+++ bounce.c	Sun Sep 20 15:46:04 1998
@@ -20,13 +20,14 @@
 #include <sys/ioctl.h>
 #include <signal.h>
 #include <sys/wait.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
 
 #define    QLEN           5
 #define    DEFAULT_PORT   1523
 
 char sbuf[16384], cbuf[16384];
-extern int errno;
-extern char *sys_errlist[];
 
 void sigchld() {
   signal(SIGCHLD, sigchld);