Okay, I've been trying to figure this out for a couple of weeks now... I'm using Boost 1.37 on Ubuntu Hardy Heron with Code::Blocks 8.02, Programming in C++.... Now, I'm rather new to Ubuntu, and just as much so programming in Ubuntu... Well, I've been working on this project, and I've been cross-developing it on Windows and Linux, but I've hit a hiccup once i've started using Boost... All works great on Windows using MinGW and Code::Blocks, however I cannot get the same code to run in Linux. The best I can think of is that there's a problem with the linking.... I've added the include path, and the lib path to the search directories, and I've added the libboost_serialization-gcc42-mt-1_37.a to the list of libraries but for some reason it still doesn't work... I get the following error when I try to compile: obj/Debug/Griffin RPG V2.o||In function `extended_type_info_typeid_1':| /usr/include/boost/serialization/extended_type_info_typeid.hpp|77|undefined reference to `boost::serialization::extended_type_info::self_register()'| /usr/include/boost/serialization/extended_type_info_typeid.hpp|77|undefined reference to `boost::serialization::extended_type_info::self_register()'| /usr/include/boost/serialization/extended_type_info_typeid.hpp|77|undefined reference to `boost::serialization::extended_type_info::self_register()'| ]+0x8)||undefined reference to `boost::serialization::detail::extended_type_info_typeid_0::less_than(boost::serialization::extended_type_info const&) const'| ]+0x8)||undefined reference to `boost::serialization::detail::extended_type_info_typeid_0::less_than(boost::serialization::extended_type_info const&) const'| ]+0x8)||undefined reference to `boost::serialization::detail::extended_type_info_typeid_0::less_than(boost::serialization::extended_type_info const&) const'| ||=== Build finished: 6 errors, 0 warnings ===| I've looked everywhere I can think of and chatted on a few IRC's but I haven't been able to get anywhere with this... Because of this I've had to develop only on Windows (Yuck!) and not do any testing in Linux... I take comfort in knowing though that once I get Boost operational, my code will work in Linux too... ( probably better since Linux is so nice to me! ) I'd appreciate any help tat can be offered! -- View this message in context: http://www.nabble.com/Linking-Boost-in-Code%3A%3ABlocks-tp21867302p21867302.... Sent from the Boost - Users mailing list archive at Nabble.com.