Hi All - I was trying to compile the boost log example code under boost_1_54_0/libs/log/example/trivial/. I basically want to have a simple logger with filter function. So the example code serves the purpose. I got the attached error message while trying to compile. I think my compile command is fine because if I comment out the section of " core::get()->set_filter ( trivial::severity >= trivial::info ); " it compiles and runs fine. Can someone please provide some insight of how to make the severity filter work? Best, -- Steven Sun ********************************************************* Eco-Tips: Please consider the environment before printing this email!