In file included from BOOST_ROOT/boost/spirit/include/phoenix_stl.hpp:13:
In file included from BOOST_ROOT/boost/spirit/home/phoenix/stl.hpp:12:
In file included from BOOST_ROOT/boost/spirit/home/phoenix/stl/algorithm.hpp:14:
In file included from BOOST_ROOT/boost/spirit/home/phoenix/stl/algorithm/querying.hpp:17:
In file included from BOOST_ROOT/boost/spirit/home/phoenix/stl/algorithm/detail/has_find.hpp:23:
In file included from BOOST_ROOT/boost/spirit/home/phoenix/stl/algorithm/detail/./is_std_map.hpp:23:
BOOST_ROOT/boost/detail/container_fwd.hpp:122:24: error: class template 'complex' was previously declared as a struct template [-Werror,-Wmismatched-tags]
    template <class T> class complex;
                       ^
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/complex:123:12: note: previous use is here
    struct complex
           ^
BOOST_ROOT/boost/detail/container_fwd.hpp:122:24: note: did you mean struct here?
    template <class T> class complex;
                       ^~~~~
                       struct
1 error generated.