gradle build NDK

import org.apache.tools.ant.taskdefs.condition.Os

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        applicationId "com.example.gp.ndk"
        minSdkVersion 16
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
        ndk {
            moduleName "ndkLib"
        }
        sourceSets.main {

            jni.srcDirs = [] //disable automatic ndk-build call
            jniLibs.srcDir 'src/main/libs' //set .so files location to libs
        }
        // call regular ndk-build(.cmd) script from app directory
        task ndkBuild(type: Exec) {
            if (Os.isFamily(Os.FAMILY_WINDOWS)) {
                commandLine 'cmd','ndk-build.cmd', '-C', file('src/main/jni/').absolutePath
            } else {
                commandLine 'ndk-build', '-C', file('src/main').absolutePath
            }
        }
        tasks.withType(JavaCompile) {
            compileTask -> compileTask.dependsOn ndkBuild
        }

    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }

    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.1.1'
}