--- src/read_tcp.c.orig	Sat Sep 10 12:27:11 2016
+++ src/read_tcp.c	Sat Sep 10 12:27:20 2016
@@ -34,6 +34,7 @@
 #include <netdb.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/select.h> /* fd_set */
 #include <unistd.h>
 #include <netinet/in.h>