--- src/platform.hpp.in.orig	2015-12-18 08:22:12 UTC
+++ src/platform.hpp.in
@@ -195,6 +195,9 @@
 /* Have eventfd extension. */
 #undef ZMQ_HAVE_EVENTFD
 
+/* Have BSDSUniX OS */
+#undef ZMQ_HAVE_BSDSUNIX
+
 /* Have FreeBSD OS */
 #undef ZMQ_HAVE_FREEBSD