diff -uNdr boost_orig/iostreams/detail/config/fpos.hpp boost/iostreams/detail/config/fpos.hpp
--- boost_1_57_0/boost/iostreams/detail/config/fpos.hpp	Mon Mar 31 12:56:02 2014
+++ boost_1_57_0/boost/iostreams/detail/config/fpos.hpp	Mon Dec  1 16:37:39 2014
@@ -23,7 +23,7 @@
 #endif
 
 # if (defined(_YVALS) || defined(_CPPLIB_VER)) && !defined(__SGI_STL_PORT) && \
-     !defined(_STLPORT_VERSION) && !defined(__QNX__)
+     !defined(_STLPORT_VERSION) && !defined(__QNX__) && !defined(__VXWORKS__)
      /**/
 #  define BOOST_IOSTREAMS_HAS_DINKUMWARE_FPOS
 # endif