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// 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.PlatformConfiguration;
import com.google.devtools.build.lib.analysis.RuleDefinition;
import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
import com.google.devtools.build.lib.analysis.TemplateVariableInfo;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.Attribute.LateBoundDefault;
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.transitions.LipoContextCollectorTransition;
/**
* Rule definition for compiler definition.
*/
public final class CcToolchainRule implements RuleDefinition {
/**
* The label points to the Windows object file parser. In bazel, it should be
* //tools/def_parser:def_parser, otherwise it should be null.
*
* <p>TODO(pcloudy): Remove this after Bazel rule definitions are not used internally anymore.
* Related bug b/63658220
*/
private final String defParserLabel;
public CcToolchainRule(String defParser) {
this.defParserLabel = defParser;
}
public CcToolchainRule() {
this.defParserLabel = null;
}
/**
* 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 LateBoundDefault<?, Label> LIBC_TOP =
LateBoundDefault.fromTargetConfiguration(
CppConfiguration.class,
null,
(rule, attributes, cppConfig) -> cppConfig.getSysrootLabel());
@Override
public RuleClass build(Builder builder, RuleDefinitionEnvironment env) {
final Label zipper = env.getToolsLabel("//tools/zip:zipper");
if (defParserLabel != null) {
builder.add(
attr("$def_parser", LABEL)
.cfg(HOST)
.singleArtifact()
.value(env.getLabel(defParserLabel)));
}
return builder
.setUndocumented()
.requiresConfigurationFragments(CppConfiguration.class, PlatformConfiguration.class)
.advertiseProvider(TemplateVariableInfo.class)
.add(attr("output_licenses", LICENSE))
.add(attr("cpu", STRING).mandatory())
.add(attr("compiler", STRING))
.add(attr("libc", STRING))
.add(attr("all_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory())
.add(attr("compiler_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory())
.add(attr("strip_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory())
.add(attr("objcopy_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory())
.add(attr("linker_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory())
.add(attr("dwp_files", LABEL).legacyAllowAnyFileType().cfg(HOST).mandatory())
.add(attr("coverage_files", LABEL).legacyAllowAnyFileType().cfg(HOST))
.add(attr("static_runtime_libs", LABEL_LIST).legacyAllowAnyFileType().mandatory())
.add(attr("dynamic_runtime_libs", LABEL_LIST).legacyAllowAnyFileType().mandatory())
.add(attr("module_map", LABEL).legacyAllowAnyFileType().cfg(HOST))
.add(attr("supports_param_files", BOOLEAN).value(true))
.add(attr("supports_header_parsing", BOOLEAN).value(false))
.add(
attr("$interface_library_builder", LABEL)
.cfg(HOST)
.singleArtifact()
.value(env.getToolsLabel("//tools/cpp:interface_library_builder")))
.add(
attr("$link_dynamic_library_tool", LABEL)
.cfg(HOST)
.singleArtifact()
.value(env.getToolsLabel("//tools/cpp:link_dynamic_library")))
.add(
attr(CcToolchain.CC_TOOLCHAIN_TYPE_ATTRIBUTE_NAME, LABEL)
.value(CppRuleClasses.ccToolchainTypeAttribute(env)))
.add(
attr(":zipper", LABEL)
.cfg(HOST)
.singleArtifact()
.value(
LateBoundDefault.fromTargetConfiguration(
CppConfiguration.class,
null,
// TODO(b/69547565): Remove call to isLLVMOptimizedFdo
(rule, attributes, cppConfig) ->
cppConfig.isLLVMOptimizedFdo() ? zipper : null)))
.add(attr(":libc_top", LABEL).value(LIBC_TOP))
.add(
attr(":lipo_context_collector", LABEL)
.cfg(LipoContextCollectorTransition.INSTANCE)
.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();
}
}
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