Hi all, I am building a shared library for Linux, for which I would like to export as few symbols as possible (ideally only the functions that my library users actually need to call). When building my project, I have the following options: -fvisibility=hidden -fvisibility-inlines-hidden I then mark all the functions that I am exporting as having default visibility. I link to static versions of boost.thread and boost.system. When I then say: nm -DC libtest.so I get a large number of symbols such as: 0002abe0 V typeinfo name for boost::exception_detail::clone_impl<boost::exceptio n_detail::bad_exception_> 0002ace0 V typeinfo name for boost::exception_detail::bad_exception_ 00029920 V typeinfo name for boost::exception_detail::error_info_injector<boost: :lock_error> 00029b00 V typeinfo name for boost::exception_detail::error_info_injector<boost: :condition_error> 00029860 V typeinfo name for boost::exception_detail::error_info_injector<boost: :thread_resource_error> 0002970f V typeinfo name for boost::thread_exception 00029a7b V typeinfo name for boost::thread_interrupted 00029740 V typeinfo name for boost::thread_resource_error 0002ac40 V typeinfo name for boost::enable_shared_from_this<boost::detail::threa d_data_base> 0002a720 V typeinfo name for boost::detail::thread_data_base 0002ad20 V typeinfo name for boost::detail::sp_counted_impl_p<boost::detail::thr ead_data_base> 0002adc0 V typeinfo name for boost::detail::sp_counted_impl_p<boost::exception_d etail::clone_impl<boost::exception_detail::bad_alloc_> > 0002ad60 V typeinfo name for boost::detail::sp_counted_impl_p<boost::exception_d etail::clone_impl<boost::exception_detail::bad_exception_> > 000296f1 V typeinfo name for boost::system::system_error I see this after having stripped the binary. Is there any way to get rid of these? Do I need to build Boost with some special cxxflags? Kind regards, Philip Bennefall