| // Copyright 2017 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. |
| |
| package com.google.devtools.build.lib.rules.cpp.transitions; |
| |
| import com.google.devtools.build.lib.analysis.config.BuildConfiguration; |
| import com.google.devtools.build.lib.analysis.config.BuildOptions; |
| import com.google.devtools.build.lib.analysis.config.transitions.PatchTransition; |
| import com.google.devtools.build.lib.rules.cpp.CppOptions; |
| import com.google.devtools.build.lib.rules.cpp.CppOptions.LipoConfigurationState; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| |
| /** |
| * Configuration transition that creates the "artifact owner" configuration from the LIPO context |
| * collector configuration. |
| * |
| * <p>The context collector creates C++ output artifacts but doesn't create the actions that |
| * generate those artifacts (this is what {@link BuildConfiguration#isActionsEnabled()} means). |
| * Those actions are the responsibility of the target configuration. This transition produces that |
| * config so artifacts created by the context collector can be associated with the right "owner". |
| * Also see {@link BuildConfiguration#getArtifactOwnerTransition()}. |
| * |
| * <p>This is a no-op for all configurations but the context collector. |
| */ |
| public class ContextCollectorOwnerTransition implements PatchTransition { |
| |
| @AutoCodec |
| public static final ContextCollectorOwnerTransition INSTANCE = |
| new ContextCollectorOwnerTransition(); |
| |
| @Override |
| public BuildOptions apply(BuildOptions options) { |
| // If this target and its transitive closure don't have C++ options, there's no context |
| // collector configuration to change. |
| if (!options.contains(CppOptions.class)) { |
| return options; |
| } |
| if (!options.get(CppOptions.class).isLipoContextCollector()) { |
| return options; |
| } |
| BuildOptions ownerOptions = options.clone(); |
| ownerOptions.get(CppOptions.class).lipoConfigurationState = LipoConfigurationState.APPLY_LIPO; |
| return ownerOptions; |
| } |
| } |