| // 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.bazel.rules.objc; |
| |
| import static com.google.devtools.build.lib.packages.ImplicitOutputsFunction.fromTemplates; |
| |
| import com.google.devtools.build.lib.analysis.RuleDefinition; |
| import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment; |
| import com.google.devtools.build.lib.analysis.config.transitions.ComposingTransitionFactory; |
| import com.google.devtools.build.lib.analysis.config.transitions.TransitionFactory; |
| import com.google.devtools.build.lib.packages.ImplicitOutputsFunction; |
| import com.google.devtools.build.lib.packages.ImplicitOutputsFunction.SafeImplicitOutputsFunction; |
| import com.google.devtools.build.lib.packages.RuleClass; |
| import com.google.devtools.build.lib.packages.RuleTransitionData; |
| import com.google.devtools.build.lib.rules.config.ConfigFeatureFlagTransitionFactory; |
| import com.google.devtools.build.lib.rules.objc.AppleCrosstoolTransition; |
| import com.google.devtools.build.lib.rules.objc.AppleStaticLibraryBaseRule; |
| |
| /** Rule definition for apple_static_library. */ |
| public class BazelAppleStaticLibraryRule implements RuleDefinition { |
| |
| /** |
| * Template for the fat archive output (using Apple's "lipo" tool to combine .a archive files of |
| * multiple architectures). |
| */ |
| static final SafeImplicitOutputsFunction LIPO_ARCHIVE = fromTemplates("%{name}_lipo.a"); |
| |
| @Override |
| public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env) { |
| return builder |
| /*<!-- #BLAZE_RULE(apple_static_library).IMPLICIT_OUTPUTS --> |
| <ul> |
| <li><code><var>name</var>_lipo.a</code>: a 'lipo'ed archive file. All transitive |
| dependencies and <code>srcs</code> are linked, minus all transitive dependencies |
| specified in <code>avoid_deps</code>.</li> |
| </ul> |
| <!-- #END_BLAZE_RULE.IMPLICIT_OUTPUTS -->*/ |
| .setImplicitOutputsFunction(ImplicitOutputsFunction.fromFunctions(LIPO_ARCHIVE)) |
| .cfg( |
| ComposingTransitionFactory.of( |
| (TransitionFactory<RuleTransitionData>) |
| (unused) -> AppleCrosstoolTransition.APPLE_CROSSTOOL_TRANSITION, |
| new ConfigFeatureFlagTransitionFactory("feature_flags"))) |
| .build(); |
| } |
| |
| @Override |
| public Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name("apple_static_library") |
| .factoryClass(BazelAppleStaticLibrary.class) |
| .ancestors(AppleStaticLibraryBaseRule.class) |
| .build(); |
| } |
| } |
| |
| /*<!-- #BLAZE_RULE (NAME = apple_static_library, TYPE = BINARY, FAMILY = Objective-C) --> |
| |
| <p>This rule produces single- or multi-architecture ("fat") Objective-C statically-linked libraries, |
| typically used in creating static Apple Frameworks for distribution and re-use in |
| multiple extensions or applications.</p> |
| |
| <p>The <code>lipo</code> tool is used to combine files of multiple architectures; a build flag |
| controls which architectures are targeted. The build flag examined depends on the |
| <code>platform_type</code> attribute for this rule (and is described in its documentation).</p> |
| |
| ${IMPLICIT_OUTPUTS} |
| |
| <!-- #END_BLAZE_RULE -->*/ |