'Return true if we need to relink the files listed in \'objects\'
to recreate \'output_file\'.'

def _need_link(self, objects, output_file):

    if self.force:
        return True
    else:
        if self.dry_run:
            newer = newer_group(objects, output_file, missing='newer')
        else:
            newer = newer_group(objects, output_file)
        return newer
