--- /home/kevin/Downloads/boost/full/boost_1_52_0/boost/iostreams/device/file_descriptor.hpp	2010-07-10 09:20:45.000000000 -0500
+++ 3rdparty/boost/1.52.0/boost/iostreams/device/file_descriptor.hpp	2013-02-05 16:23:41.431621976 -0600
@@ -16,6 +16,7 @@
 #endif
 
 #include <string>
+#include <fcntl.h>       // file opening flags.
 #include <boost/cstdint.hpp>               // intmax_t.
 #include <boost/iostreams/categories.hpp>  // tags.
 #include <boost/iostreams/detail/config/auto_link.hpp>