build-system/builder-model/build.gradle

apply plugin: 'java'
apply plugin: 'clone-artifacts'
apply plugin: 'sdk-java-lib'

dependencies {
    compile project(':base:annotations')
}

group = 'com.android.tools.build'
archivesBaseName = 'builder-model'
version = rootProject.ext.buildVersion

project.ext.pomName = 'Android Builder Model library'
project.ext.pomDesc = 'Model for the Builder library.'

project.ext.apiVersion = rootProject.ext.apiVersion ?: 0

apply from: "$rootDir/buildSrc/base/publish.gradle"
apply from: "$rootDir/buildSrc/base/bintray.gradle"
apply from: "$rootDir/buildSrc/base/javadoc.gradle"

["Model-Version": version, "Model-Api-Version": apiVersion].each { key, value ->
    jar.manifest.attributes((key): value)
    sdkJar.manifest.attributes((key): value)
}

def generated = new File("${project.buildDir}/generated/java")

sourceSets {
    main {
        java {
            srcDir generated
        }
    }
}

task generateVersionConstantsJava {
    inputs.property("apiVersion", apiVersion)
    inputs.property("version", version)
    ext.versionFile = new File(generated, "com/android/builder/model/Version.java")
    outputs.file(versionFile)
}
generateVersionConstantsJava << {
    versionFile.parentFile.mkdirs()
    versionFile.text = """
package com.android.builder.model;

public final class Version {
    private Version() {}
    public static final String ANDROID_GRADLE_PLUGIN_VERSION = "$version";
    public static final int BUILDER_MODEL_API_VERSION = $apiVersion;
}
"""
}

tasks.compileJava.dependsOn generateVersionConstantsJava