diff -u -r ../Python-3.5.1/Modules/_cryptmodule.c ./Modules/_cryptmodule.c
--- ../Python-3.5.1/Modules/_cryptmodule.c	2015-12-06 20:39:10.000000000 -0500
+++ ./Modules/_cryptmodule.c	2016-04-23 08:11:35.832616854 -0400
@@ -4,6 +4,7 @@
 #include "Python.h"
 
 #include <sys/types.h>
+#include <crypt.h>
 
 /* Module crypt */