should not use require_relative to load an extension library
should not use require_relative to load an extension library

No guarantee that scripts and extension libraries are placed under same location, with mkmf.rb or recent RubyGems.
ojundt/msgpack-ruby,msgpack/msgpack-ruby,larskanis/msgpack-ruby,kou/msgpack-ruby,nurse/msgpack-ruby,ojundt/msgpack-ruby,msgpack/msgpack-ruby,kou/msgpack-ruby,cosmo0920/msgpack-ruby,larskanis/msgpack-ruby,nurse/msgpack-ruby,larskanis/msgpack-ruby,nurse/msgpack-ruby,kou/msgpack-ruby,nurse/msgpack-ruby,okkez/msgpack-ruby,okkez/msgpack-ruby,larskanis/msgpack-ruby,cosmo0920/msgpack-ruby,kou/msgpack-ruby,msgpack/msgpack-ruby,okkez/msgpack-ruby,ojundt/msgpack-ruby,cosmo0920/msgpack-ruby,ojundt/msgpack-ruby,cosmo0920/msgpack-ruby,okkez/msgpack-ruby