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
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