| # Copyright 2019 The Bazel Authors. All rights reserved. |
| # |
| # 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 |
| # |
| # http://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. |
| """proto_lang_toolchain rule""" |
| |
| load("//proto:proto_common.bzl", "proto_common") |
| |
| def proto_lang_toolchain(*, name, toolchain_type = None, exec_compatible_with = [], target_compatible_with = [], **attrs): |
| """Creates a proto_lang_toolchain and corresponding toolchain target. |
| |
| Toolchain target is only created when toolchain_type is set. |
| |
| https://docs.bazel.build/versions/master/be/protocol-buffer.html#proto_lang_toolchain |
| |
| Args: |
| |
| name: name of the toolchain |
| toolchain_type: The toolchain type |
| exec_compatible_with: ([constraints]) List of constraints the prebuild binaries is compatible with. |
| target_compatible_with: ([constraints]) List of constraints the target libraries are compatible with. |
| **attrs: Rule attributes |
| """ |
| |
| if getattr(proto_common, "INCOMPATIBLE_PASS_TOOLCHAIN_TYPE", False): |
| attrs["toolchain_type"] = toolchain_type |
| |
| # buildifier: disable=native-proto |
| native.proto_lang_toolchain(name = name, **attrs) |
| |
| if toolchain_type: |
| native.toolchain( |
| name = name + "_toolchain", |
| toolchain_type = toolchain_type, |
| exec_compatible_with = exec_compatible_with, |
| target_compatible_with = target_compatible_with, |
| toolchain = name, |
| ) |