--- zeromq-4.0.4_org/src/blob.hpp	2014-06-04 10:19:12.680062287 +0800
+++ zeromq-4.0.4/src/blob.hpp	2014-06-04 10:30:31.168047457 +0800
@@ -21,6 +21,7 @@
 #define __ZMQ_BLOB_HPP_INCLUDED__
 
 #include <string>
+#include <ios>
 #include <string.h>
 
 // Borrowed from id3lib_strings.h: