Bernd, Did you solve the issue reported in [1]? The Debian build for ia64 fails in the same way [2]: In file included from libs/serialization/src/polymorphic_iarchive.cpp:18: ./boost/archive/polymorphic_iarchive.hpp:88: error: 'virtual void boost::archive::polymorphic_iarchive_impl::load(int64_t&)' cannot be overloaded ./boost/archive/polymorphic_iarchive.hpp:84: error: with 'virtual void boost::archive::polymorphic_iarchive_impl::load(long int&)' ./boost/archive/polymorphic_iarchive.hpp:89: error: 'virtual void boost::archive::polymorphic_iarchive_impl::load(uint64_t&)' cannot be overloaded ./boost/archive/polymorphic_iarchive.hpp:85: error: with 'virtual void boost::archive::polymorphic_iarchive_impl::load(long unsigned int&)' ...failed gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.1/release/polymorphic_iarchive.o... [1] http://article.gmane.org/gmane.comp.lib.boost.devel/172455 [2] http://buildd.debian.org/fetch.cgi?&pkg=boost1.35&ver=1.35.0-1&arch=ia64&stamp=1210561653&file=log Thanks, -Steve