--- source3/lib/messages_dgm.c.orig	2017-03-10 11:28:17.000000000 +0100
+++ source3/lib/messages_dgm.c	2017-03-10 11:31:01.000000000 +0100
@@ -330,6 +330,10 @@
  * Make sure *ONLY* thread-safe functions are called within.
  */
 
+#ifndef MSG_NOSIGNAL
+	#define MSG_NOSIGNAL 0x0 // Do not request NOSIGNAL on systems where this is not implemented.
+#endif
+
 static ssize_t messaging_dgm_sendmsg(int sock,
 				     const struct iovec *iov, int iovlen,
 				     const int *fds, size_t num_fds,