diff -uNr srelay-0.4.8p1/readconf.c srelay-0.4.8p1.mod/readconf.c
--- srelay-0.4.8p1/readconf.c	2017-12-25 05:10:37.000000000 +0200
+++ srelay-0.4.8p1.mod/readconf.c	2018-06-26 00:55:42.542622067 +0300
@@ -34,6 +34,8 @@
 
 #include "srelay.h"
 
+#include <crypt.h>
+
 /* prototypes */
 int setport __P((u_int16_t *, char *));
 void add_entry __P((ROUTE_INFO *, ROUTE_INFO *, int));
