Hi, I'm trying to compile the client example found in http://www.boost.org/doc/libs/1_42_0/doc/html/boost_asio/tutorial/tutdaytime... tutorials), but I get the following errors: g++ -o dist/Debug/GNU-MacOSX/socketclient build/Debug/GNU-MacOSX/main.o Undefined symbols: "boost::system::get_system_category()", referenced from: boost::asio::error::get_system_category() in main.o boost::system::error_code::error_code()in main.o __static_initialization_and_destruction_0(int, int)in main.o __static_initialization_and_destruction_0(int, int)in main.o "boost::system::get_generic_category()", referenced from: __static_initialization_and_destruction_0(int, int)in main.o __static_initialization_and_destruction_0(int, int)in main.o __static_initialization_and_destruction_0(int, int)in main.o ld: symbol(s) not found collect2: ld returned 1 exit status make[2]: *** [dist/Debug/GNU-MacOSX/socketclient] Error 1 make[1]: *** [.build-conf] Error 2 make: *** [.build-impl] Error 2 BUILD FAILED (exit value 2, total time: 2s) Any idea why this is failing? Thanks Dann