| # Copyright 2019 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| """Script that emits a helpful error when a facade is used without a backend.""" |
| |
| import argparse |
| import sys |
| |
| |
| def parse_args(): |
| """Parses command-line arguments.""" |
| |
| parser = argparse.ArgumentParser( |
| description='Emits an error when a facade has a null backend') |
| parser.add_argument('facade_name', help='The facade with a null backend') |
| return parser.parse_args() |
| |
| |
| def main(): |
| args = parse_args() |
| print(f'ERROR: {args.facade_name} tried to build without a backend.') |
| print('If you are using this module, ensure you have configured a backend ' |
| 'properly. If you are NOT using this module, this error may have ' |
| 'been triggered by trying to build all targets.') |
| sys.exit(1) |
| |
| |
| if __name__ == '__main__': |
| main() |