code: def _parse_specific_options(self, data):
          
          data['common_flags'] = []
          data['ld_flags'] = []
          data['c_flags'] = []
          data['cxx_flags'] = []
          data['asm_flags'] = []
          for k, v in data['misc'].items():
              if type(v) is list:
                  if k not in data:
                      data[k] = []
                  data[k].extend(v)
              else:
                  if k not in data:
                      data[k] = ''
                  data[k] = v
docs: Parse all specific setttings.