error of "unused_local_typedefs" in thirdparty/boost

Compilation error under g++ 4.8.1 (Fedora 19)
....
../3rdparty/libprocess/3rdparty/boost-1.53.0/boost/variant/variant.hpp: In member function 'void boost::variant<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19>::operator<(const U&) const':
../3rdparty/libprocess/3rdparty/boost-1.53.0/boost/variant/variant.hpp:2254:135: error: typedef 'boost_static_assert_typedef_2254' locally defined but not used [-Werror=unused-local-typedefs]
BOOST_STATIC_ASSERT( false && sizeof(U) );
^
cc1plus: all warnings being treated as errors
....

It is a well-known bug in boost.
https://svn.boost.org/trac/boost/ticket/8546
https://groups.google.com/forum/#!topic/v8-dev/vxzTVQ5fJ4s

Before it is fixed totally in boost, the error can be just suppressed here
mesos/src/Makefile.am: line 73
MESOS_CPPFLAGS += -Wall -Werror

=======

MESOS_CPPFLAGS += -Wall -Werror -Wno-unused-local-typedefs.

yf