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CppApplicationPlugin.java
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CppApplicationPlugin.java
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/*
* Copyright 2017 the original author or authors.
*
* 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 org.gradle.language.cpp.plugins;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.internal.attributes.ImmutableAttributesFactory;
import org.gradle.api.model.ObjectFactory;
import org.gradle.api.provider.ProviderFactory;
import org.gradle.language.cpp.CppApplication;
import org.gradle.language.cpp.CppExecutable;
import org.gradle.language.cpp.CppPlatform;
import org.gradle.language.cpp.internal.DefaultCppApplication;
import org.gradle.language.cpp.internal.DefaultCppPlatform;
import org.gradle.language.internal.NativeComponentFactory;
import org.gradle.language.nativeplatform.internal.Dimensions;
import org.gradle.language.nativeplatform.internal.toolchains.ToolChainSelector;
import org.gradle.nativeplatform.TargetMachineFactory;
import org.gradle.nativeplatform.platform.internal.Architectures;
import org.gradle.nativeplatform.platform.internal.DefaultNativePlatform;
import javax.inject.Inject;
import static org.gradle.language.nativeplatform.internal.Dimensions.tryToBuildOnHost;
import static org.gradle.language.nativeplatform.internal.Dimensions.useHostAsDefaultTargetMachine;
/**
* <p>A plugin that produces a native application from C++ source.</p>
*
* <p>Assumes the source files are located in `src/main/cpp` and header files are located in `src/main/headers`.</p>
*
* <p>Adds a {@link CppApplication} extension to the project to allow configuration of the application.</p>
*
* @since 4.5
*/
public abstract class CppApplicationPlugin implements Plugin<Project> {
private final NativeComponentFactory componentFactory;
private final ToolChainSelector toolChainSelector;
private final ImmutableAttributesFactory attributesFactory;
private final TargetMachineFactory targetMachineFactory;
@Inject
public CppApplicationPlugin(NativeComponentFactory componentFactory, ToolChainSelector toolChainSelector, ImmutableAttributesFactory attributesFactory, TargetMachineFactory targetMachineFactory) {
this.componentFactory = componentFactory;
this.toolChainSelector = toolChainSelector;
this.attributesFactory = attributesFactory;
this.targetMachineFactory = targetMachineFactory;
}
@Override
public void apply(final Project project) {
project.getPluginManager().apply(CppBasePlugin.class);
final ObjectFactory objectFactory = project.getObjects();
final ProviderFactory providers = project.getProviders();
// Add the application and extension
final DefaultCppApplication application = componentFactory.newInstance(CppApplication.class, DefaultCppApplication.class, "main");
project.getExtensions().add(CppApplication.class, "application", application);
project.getComponents().add(application);
// Configure the component
application.getBaseName().convention(project.getName());
application.getTargetMachines().convention(useHostAsDefaultTargetMachine(targetMachineFactory));
application.getDevelopmentBinary().convention(project.provider(() -> {
// Use the debug variant as the development binary
// Prefer the host architecture, if present, else use the first architecture specified
return application.getBinaries().get().stream()
.filter(CppExecutable.class::isInstance)
.map(CppExecutable.class::cast)
.filter(binary -> !binary.isOptimized() && Architectures.forInput(binary.getTargetMachine().getArchitecture().getName()).equals(DefaultNativePlatform.host().getArchitecture()))
.findFirst()
.orElseGet(() -> application.getBinaries().get().stream()
.filter(CppExecutable.class::isInstance)
.map(CppExecutable.class::cast)
.filter(binary -> !binary.isOptimized())
.findFirst()
.orElse(null));
}));
application.getBinaries().whenElementKnown(binary -> {
application.getMainPublication().addVariant(binary);
});
project.afterEvaluate(p -> {
// TODO: make build type configurable for components
Dimensions.applicationVariants(application.getBaseName(), application.getTargetMachines(), objectFactory, attributesFactory,
providers.provider(() -> project.getGroup().toString()), providers.provider(() -> project.getVersion().toString()),
variantIdentity -> {
if (tryToBuildOnHost(variantIdentity)) {
ToolChainSelector.Result<CppPlatform> result = toolChainSelector.select(CppPlatform.class, new DefaultCppPlatform(variantIdentity.getTargetMachine()));
application.addExecutable(variantIdentity, result.getTargetPlatform(), result.getToolChain(), result.getPlatformToolProvider());
} else {
// Known, but not buildable
application.getMainPublication().addVariant(variantIdentity);
}
});
// Configure the binaries
application.getBinaries().realizeNow();
});
}
}