Hello, I'm trying to compile a code that uses boost. The code is this one: http://people.eng.unimelb.edu.au/tcohn/t3.html The version of boost installed in the machine is: 1.41 The machine where I'm running this code is a Scientific Linux release 6.8 (Carbon). The detailed error message that I get can be seen here: http://pastebin.com/ADj4j6k0 Basically, the errors messages are like this: undefined reference to `boost::program_options::options_description::options_description(...) undefined reference to `boost::program_options::validation_error::get_template(...) -lboost_program_options is in the compilation line. And I've checked using 'locate' that /usr/lib64 (as appears in the compilation line) contains: /usr/lib64/libboost_program_options-mt.so /usr/lib64/libboost_program_options-mt.so.5 /usr/lib64/libboost_program_options.so /usr/lib64/libboost_program_options.so.5 I would really appreciate any help you could help me with this error. Best, Fernando