I'm encountering many warning about a deprecated header when writing my own XML input archive class: In file included from /opt/cfs/include/boost/archive/impl/basic_xml_grammar.hpp:59, from /opt/cfs/include/boost/archive/impl/xml_iarchive_impl.ipp:41, /opt/cfs/include/boost/spirit/core/non_terminal/rule.hpp:18:4: warning: #warning is a GCC extension /opt/cfs/include/boost/spirit/core/non_terminal/rule.hpp:18:4: warning: #warning "This header is deprecated. Please use: boost/spirit/include/classic_rule.hpp" This is because the serialization library is using "Spirit.Classic" and should be including different headers: http://www.boost.org/doc/libs/1_43_0/libs/spirit/doc/html/spirit/what_s_new/... I've noticed patches related to this on the web, e.g. http://gitorious.org/ryppl/doc/commit/2711cc4a1e8751455f9188ffefa9b34de13797... ... and have repackaged a patch against the current 1.43.0 which fixes these warnings? Please could this be committed for the next release? Regards, Simon