Dear all, I apologize for cross-posting (part of this was already reported on boost-users), but maybe this list is better suited for the problem. I also have some additional information from some more experimentation. Here are the facts: (1) We use several machines for development, all under openSuSE 10.2, some of them 32-, some 64-bit systems. Recently, we have installed gcc 4.3.0. We employ several boost libraries, most notably serialization. (2) boost 1.35.0 (RC2) compiles and installs fine on 32-bit with gcc 4.3.0. Serialization code works fine, as far as we use it. (3) On the 64-bit system, however, version 1.35.0 does not compile with gcc 4.3.0: MkDir1 bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/polymorphic_iarchive.o 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&)’ "g++" -ftemplate-depth-128 -O0 -fno-inline -Wall -g -fPIC -pthread -DBOOST_ALL_NO_LIB=1 -DBOOST_SERIALIZATION_DYN_LINK=1 -I"." -c -o "bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/polymorphic_iarchive.o" "libs/serialization/src/polymorphic_iarchive.cpp" ...failed gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/polymorphic_iarchive.o... gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/polymorphic_oarchive.o In file included from libs/serialization/src/polymorphic_oarchive.cpp:18: ./boost/archive/polymorphic_oarchive.hpp:86: error: ‘virtual void boost::archive::polymorphic_oarchive_impl::save(int64_t)’ cannot be overloaded ./boost/archive/polymorphic_oarchive.hpp:83: error: with ‘virtual void boost::archive::polymorphic_oarchive_impl::save(long int)’ ./boost/archive/polymorphic_oarchive.hpp:87: error: ‘virtual void boost::archive::polymorphic_oarchive_impl::save(uint64_t)’ cannot be overloaded ./boost/archive/polymorphic_oarchive.hpp:84: error: with ‘virtual void boost::archive::polymorphic_oarchive_impl::save(long unsigned int)’ "g++" -ftemplate-depth-128 -O0 -fno-inline -Wall -g -fPIC -pthread -DBOOST_ALL_NO_LIB=1 -DBOOST_SERIALIZATION_DYN_LINK=1 -I"." -c -o "bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/polymorphic_oarchive.o" "libs/serialization/src/polymorphic_oarchive.cpp" ...failed gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/polymorphic_oarchive.o... gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/stl_port.o gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/text_iarchive.o gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/text_oarchive.o gcc.compile.c++ bin.v2/libs/serialization/build/gcc-4.3.0/debug/threading-multi/void_cast.o (4) Moreover, when compiling (on a 64-bit machine; on 32-bit this is ok) our application code with boost 1.34.1 and gcc 4.3.0, as soon as we #include "boost/serialization/vector.hpp" (even without using any serialization functionality) we receive error messages: /usr/local/include/boost-1_34_1/boost/serialization/vector.hpp:126: error: redefinition of 'struct boost::serialization::implementation_level<std::vector<long int, std::allocator<long int> > >' /usr/local/include/boost-1_34_1/boost/serialization/vector.hpp:126: error: previous definition of 'struct boost::serialization::implementation_level<std::vector<long int, std::allocator<long int> > >' /usr/local/include/boost-1_34_1/boost/serialization/vector.hpp:126: error: redefinition of 'struct boost::serialization::implementation_level<std::vector<long unsigned int, std::allocator<long unsigned int> > >' /usr/local/include/boost-1_34_1/boost/serialization/vector.hpp:126: error: previous definition of 'struct boost::serialization::implementation_level<std::vector<long unsigned int, std::allocator<long unsigned int> > >' On the same machine the code compiles well with boost 1.33.1. Note that 1.34.1 was compiled with an earlier gcc version. Best regards Bernd -- ======================================================================= Bernd Speiser Institut für Organische Chemie Auf der Morgenstelle 18 temporary address: Auf der Morgenstelle 15 D-72076 Tübingen Germany phone: +49-7071-2976205 (office) +49-7071-2976242 (laboratory) +49-7071-2972098 (secretary) fax: +49-7071-295518 e-mail: bernd.speiser@uni-tuebingen.de Internet: http://www.uni-tuebingen.de/speiser =======================================================================