--- coaxe.c.orig	Wed Apr  6 18:07:34 1994
+++ coaxe.c	Wed Mar 16 19:29:26 2016
@@ -31,14 +31,12 @@
 #include <X11/Xlib.h>
 #include <X11/Xatom.h>
 #include <sys/param.h>
-#include <sys/errno.h>
-extern int errno;
+#include <errno.h>
 #ifndef __BSD_4_4__
 extern char *sys_errlist[];
 #endif
 #include <stdio.h>
-extern char *getenv();
-extern char *malloc(), *realloc();
+#include <stdlib.h>
 
 #include "util.h"