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/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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.android.build.gradle.tasks
import com.android.annotations.NonNull
import com.android.build.gradle.internal.tasks.NdkTask
import com.android.builder.NdkConfig
import com.android.sdklib.IAndroidTarget
import com.google.common.base.Charsets
import com.google.common.base.Joiner
import com.google.common.collect.Lists
import com.google.common.io.Files
import org.gradle.api.GradleException
import org.gradle.api.file.FileTree
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.OutputDirectory
import org.gradle.api.tasks.OutputFile
import org.gradle.api.tasks.TaskAction
import org.gradle.api.tasks.incremental.IncrementalTaskInputs
import org.gradle.api.tasks.util.PatternSet
/**
*/
class NdkCompile extends NdkTask {
Set<File> sourceFolders
@OutputFile
File generatedMakefile
@Input
boolean debuggable
@OutputDirectory
File soFolder
@OutputDirectory
File objFolder
@InputFiles
FileTree getSource() {
FileTree src = null
Set<File> sources = getSourceFolders()
if (!sources.isEmpty()) {
src = getProject().files(new ArrayList<Object>(sources)).getAsFileTree()
}
return src == null ? getProject().files().getAsFileTree() : src
}
@TaskAction
void taskAction(IncrementalTaskInputs inputs) {
FileTree sourceFileTree = getSource()
Set<File> sourceFiles = sourceFileTree.matching(new PatternSet().exclude("**/*.h")).files
File makefile = getGeneratedMakefile()
if (sourceFiles.isEmpty()) {
makefile.delete()
emptyFolder(getSoFolder())
emptyFolder(getObjFolder())
return
}
File ndkDirectory = getPlugin().ndkDirectory
if (ndkDirectory == null || !ndkDirectory.isDirectory()) {
throw new GradleException("NDK not configured")
}
boolean generateMakefile = false
if (!inputs.isIncremental()) {
project.logger.info("Unable do incremental execution: full task run")
generateMakefile = true
emptyFolder(getSoFolder())
emptyFolder(getObjFolder())
} else {
// look for added or removed files *only*
//noinspection GroovyAssignabilityCheck
inputs.outOfDate { change ->
if (change.isAdded()) {
generateMakefile = true
}
}
//noinspection GroovyAssignabilityCheck
inputs.removed { change ->
generateMakefile = true
}
}
if (generateMakefile) {
writeMakefile(sourceFiles, makefile)
}
// now build
runNdkBuild(ndkDirectory, makefile)
}
private void writeMakefile(@NonNull Set<File> sourceFiles, @NonNull File makefile) {
NdkConfig ndk = getNdkConfig()
StringBuilder sb = new StringBuilder()
sb.append(
"LOCAL_PATH := \$(call my-dir)\n" +
"include \$(CLEAR_VARS)\n\n")
sb.append("LOCAL_MODULE := ").append(ndk.moduleName != null ? ndk.moduleName : project.name).append('\n')
if (ndk.cFlags != null) {
sb.append("LOCAL_CFLAGS := ").append(ndk.cFlags).append('\n')
}
if (ndk.ldLibs != null) {
sb.append("LOCAL_LDLIBS := ").append(ndk.ldLibs).append('\n')
}
sb.append("LOCAL_SRC_FILES := \\\n")
for (File sourceFile : sourceFiles) {
sb.append('\t').append(sourceFile.absolutePath).append(" \\\n")
}
sb.append('\n')
sb.append(
"\ninclude \$(BUILD_SHARED_LIBRARY)\n")
Files.write(sb.toString(), makefile, Charsets.UTF_8)
}
private void runNdkBuild(@NonNull File ndkLocation, @NonNull File makefile) {
NdkConfig ndk = getNdkConfig()
List<String> commands = Lists.newArrayList()
commands.add(ndkLocation.absolutePath + File.separator + "ndk-build")
commands.add("NDK_PROJECT_PATH=null")
commands.add("APP_BUILD_SCRIPT=" + makefile.absolutePath)
// target
IAndroidTarget target = getPlugin().loadedSdkParser.target
if (!target.isPlatform()) {
target = target.parent
}
commands.add("APP_PLATFORM=" + target.hashString())
// include paths
for (File sourceFolder : getSourceFolders()) {
commands.add("-I")
commands.add(sourceFolder.absolutePath)
}
// temp out
commands.add("NDK_OUT=" + getObjFolder().absolutePath)
// libs out
commands.add("NDK_LIBS_OUT=" + getSoFolder().absolutePath)
// debug builds
if (getDebuggable()) {
commands.add("NDK_DEBUG=1")
}
if (ndk.getStl() != null) {
commands.add("APP_STL=" + ndk.getStl())
}
Set<String> abiFilters = ndk.abiFilters
if (abiFilters != null && !abiFilters.isEmpty()) {
if (abiFilters.size() == 1) {
commands.add("APP_ABI=" + abiFilters.iterator().next())
} else {
Joiner joiner = Joiner.on(',').skipNulls()
commands.add("APP_ABI=" + joiner.join(abiFilters.iterator()))
}
} else {
commands.add("APP_ABI=all")
}
getBuilder().commandLineRunner.runCmdLine(commands, null)
}
}
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