| // Copyright 2016 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.objc; |
| |
| import com.google.common.collect.Iterables; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.RuleContext; |
| import com.google.devtools.build.lib.analysis.actions.CustomCommandLine; |
| import com.google.devtools.build.lib.analysis.actions.SymlinkAction; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.rules.apple.ApplePlatform; |
| import com.google.devtools.build.lib.rules.apple.XcodeConfigInfo; |
| |
| /** |
| * Support for registering actions using the Apple tool "lipo", which combines artifacts of |
| * different architectures to make multi-architecture artifacts. |
| */ |
| public class LipoSupport { |
| private final RuleContext ruleContext; |
| |
| public LipoSupport(RuleContext ruleContext) { |
| this.ruleContext = ruleContext; |
| } |
| |
| /** |
| * Registers an action to invoke "lipo" on all artifacts in {@code inputBinaries} to create the |
| * {@code outputBinary} multi-architecture artifact, built for platform {@code platform}. |
| * |
| * <p>If there is only one input binary given, since "lipo" is an expensive action, this will only |
| * symlink the output location to the input binary. |
| * |
| * @return this object |
| */ |
| public LipoSupport registerCombineArchitecturesAction( |
| NestedSet<Artifact> inputBinaries, Artifact outputBinary, ApplePlatform platform) { |
| if (inputBinaries.toList().size() > 1) { |
| ruleContext.registerAction( |
| ObjcRuleClasses.spawnAppleEnvActionBuilder( |
| XcodeConfigInfo.fromRuleContext(ruleContext), platform) |
| .setMnemonic("ObjcCombiningArchitectures") |
| .addTransitiveInputs(inputBinaries) |
| .addOutput(outputBinary) |
| .setExecutable(CompilationSupport.xcrunwrapper(ruleContext)) |
| .addCommandLine( |
| CustomCommandLine.builder() |
| .add(ObjcRuleClasses.LIPO) |
| .addExecPaths("-create", inputBinaries) |
| .addExecPath("-o", outputBinary) |
| .build()) |
| .build(ruleContext)); |
| } else { |
| ruleContext.registerAction(SymlinkAction.toArtifact( |
| ruleContext.getActionOwner(), |
| Iterables.getOnlyElement(inputBinaries), |
| outputBinary, |
| "Symlinking single-architecture binary")); |
| } |
| return this; |
| } |
| } |