| # Copyright 2018 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # Description: |
| # A variation of select() that prints a meaningful error message if |
| # --config=fuchsia is absent. This avoid cryptic build errors about |
| # missing attribute values. |
| |
| _ERROR = """ |
| *********************************************************** |
| * You have to specify a config in order to build Fuchsia. * |
| * * |
| * For example: --config=fuchsia. * |
| *********************************************************** |
| """ |
| |
| def fuchsia_select(configs): |
| """ select() variant that prints a meaningful error. |
| |
| Args: |
| config: A dict of config name-value pairs. |
| |
| Returns: |
| Selected attribute value depending on the config. |
| """ |
| return select(configs, no_match_error = _ERROR) |
