| // Copyright 2014 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; |
| |
| import static com.google.devtools.build.lib.packages.Attribute.ConfigurationTransition.HOST; |
| import static com.google.devtools.build.lib.packages.Attribute.attr; |
| import static com.google.devtools.build.lib.packages.BuildType.LABEL; |
| import static com.google.devtools.build.lib.packages.BuildType.LABEL_LIST; |
| import static com.google.devtools.build.lib.packages.BuildType.LICENSE; |
| import static com.google.devtools.build.lib.syntax.Type.BOOLEAN; |
| import static com.google.devtools.build.lib.syntax.Type.STRING; |
| |
| import com.google.devtools.build.lib.analysis.BaseRuleClasses; |
| import com.google.devtools.build.lib.analysis.RuleDefinition; |
| import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment; |
| import com.google.devtools.build.lib.analysis.config.BuildConfiguration; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.packages.Attribute.LateBoundLabel; |
| import com.google.devtools.build.lib.packages.AttributeMap; |
| import com.google.devtools.build.lib.packages.Rule; |
| import com.google.devtools.build.lib.packages.RuleClass; |
| import com.google.devtools.build.lib.packages.RuleClass.Builder; |
| import com.google.devtools.build.lib.packages.Target; |
| import com.google.devtools.build.lib.rules.cpp.CppRuleClasses.LipoTransition; |
| |
| /** |
| * Rule definition for compiler definition. |
| */ |
| public final class CcToolchainRule implements RuleDefinition { |
| |
| /** |
| * Determines if the given target is a cc_toolchain or one of its subclasses. New subclasses |
| * should be added to this method. |
| */ |
| static boolean isCcToolchain(Target target) { |
| String ruleClass = ((Rule) target).getRuleClass(); |
| return ruleClass.endsWith("cc_toolchain"); |
| } |
| |
| private static final LateBoundLabel<BuildConfiguration> LIBC_TOP = |
| new LateBoundLabel<BuildConfiguration>(CppConfiguration.class) { |
| @Override |
| public Label resolve( |
| Rule rule, AttributeMap attributes, BuildConfiguration configuration) { |
| return configuration.getFragment(CppConfiguration.class).getLibcLabel(); |
| } |
| }; |
| |
| @Override |
| public RuleClass build(Builder builder, RuleDefinitionEnvironment env) { |
| return builder |
| .setUndocumented() |
| .requiresConfigurationFragments(CppConfiguration.class) |
| .add(attr("output_licenses", LICENSE)) |
| .add(attr("cpu", STRING).mandatory()) |
| .add(attr("all_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory()) |
| .add(attr("compiler_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory()) |
| .add(attr("strip_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory()) |
| .add(attr("objcopy_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory()) |
| .add(attr("linker_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory()) |
| .add(attr("dwp_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory()) |
| .add(attr("static_runtime_libs", LABEL_LIST).legacyAllowAnyFileType().mandatory()) |
| .add(attr("dynamic_runtime_libs", LABEL_LIST).legacyAllowAnyFileType().mandatory()) |
| .add(attr("module_map", LABEL).legacyAllowAnyFileType().cfg(HOST)) |
| .add(attr("supports_param_files", BOOLEAN).value(true)) |
| .add(attr("supports_header_parsing", BOOLEAN).value(false)) |
| // TODO(bazel-team): Should be using the TARGET configuration. |
| .add(attr(":libc_top", LABEL).cfg(HOST).value(LIBC_TOP)) |
| .add(attr(":lipo_context_collector", LABEL) |
| .cfg(LipoTransition.LIPO_COLLECTOR) |
| .value(CppRuleClasses.LIPO_CONTEXT_COLLECTOR) |
| .skipPrereqValidatorCheck()) |
| .build(); |
| } |
| |
| @Override |
| public Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name("cc_toolchain") |
| .ancestors(BaseRuleClasses.BaseRule.class) |
| .factoryClass(CcToolchain.class) |
| .build(); |
| } |
| } |