'Search the specified list of directories for a static or shared
library file \'lib\' and return the full path to that file.  If
\'debug\' true, look for a debugging version (if that makes sense on
the current platform).  Return None if \'lib\' wasn\'t found in any of
the specified directories.'

def find_library_file(self, dirs, lib, debug=0):

    raise NotImplementedError
