Hi again Running bjam with an mxscaleb-gcc cross compilation toolchain (Version 3.4.3), I repeatedly get the following error line on boost spirit: In file included from ./boost/spirit/home/classic/core.hpp:33, from ./boost/spirit/include/classic_core.hpp:11, from ./boost/graph/detail/read_graphviz_spirit.hpp:32, from ./boost/graph/graphviz.hpp:780, from libs/graph/src/read_graphviz_spirit.cpp:28: ./boost/spirit/home/classic/core/primitives/numerics.hpp:124: Error: Declaration »template<class ScannerT> struct boost::spirit::classic::sign_parser::result« ./boost/spirit/home/classic/core/parser.hpp:125: conflicts with previous declaration of <class ScannerT> struct boost::spirit::classic::parserboost::spirit::classic::sign_parser::result « As a result, building the serialization library fails. Any ideas on how to fix this here? Thanks in advance and greets Kessi