code: def normalize_outputdir(outputdir=None):
      
      normalized = ''
      cwd = os.getcwd()
      if not outputdir:
          outputdir_drivers = os.path.join(cwd, 'drivers')
          if os.path.isdir(outputdir_drivers):
              normalized = outputdir_drivers
          else:
              normalized = cwd
      else:
          normalized = os.path.join(cwd, os.path.normpath(outputdir))
      return normalized
docs: if output dir is None try using the ./drivers directory
      if it already exists, otherwise use the current working directory