Simple gradle build file for legacy structure library projects

build.gradle

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:0.12.+'
    }
}

apply plugin: 'com.android.library'

dependencies {
    // Support Libraries
    compile fileTree(dir: 'libs', include: '*.jar')
}

android {
    compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION

    defaultConfig {
        minSdkVersion 8
        targetSdkVersion Integer.parseInt(project.ANDROID_TARGET_SDK_VERSION)
    }

    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            res.srcDirs = ['res']
        }
    }
}