Building From Source

Tutorial by Nicholas Hallahan.

Building the toolkit from source you’ll be able to modify and customize WhirlyGlobe-Maply, and your changes will immediately be compiled into your project. If you plan on modifying this toolkit, building from source is your best option.

Clone Git Repository

First you will want to clone the toolkit from Github.

git clone

The Android portion of the SDK is in the develop_3_0 branch. Check out this branch.

cd WhirlyGlobe
git checkout develop_3_0

WhirlyGlobe-Maply uses a bunch of submodules for its dependencies.

git submodule init
git submodule update

There are 13 git submodules that need to be cloned and initialized. This usually takes about a minute.

Our build scripts need to know the location of your Android SDK and Android NDK. This is done by creating a file in the WhirlyGlobe/WhirlyGlobeSrc/Android/ directory. My file is below. Replace these paths to the paths of your Android SDK and NDK respectively.


Homebrew usually places packages in /usr/local/Cellar. This is a good place to look to find your NDK. You can find the location of your Android SDK your Android Studio Preferences (Android Studio > Preferences):

SDK Location in Android Studio

Building an AAR

The .aar is the binary package container format Android uses, an extension to Java’s .jar container. Through gradle, we create an AAR of WhirlyGlobe-Maply that you can copy over to your Hello Earth project. First, make sure you are in the Android directory:


Then, execute the gradlew build script:

./gradlew assemble

This will take several minutes. You will be compiling the entirety of WhirlyGlobe-Maply into an AAR file. In fact, there will be two AAR files–one in Debug mode and the other in Release mode.

These AAR files will be located in:


Unless you need to debug the underlying library, you should use the Android-release.aar in your Hello Earth project. Keep track of this file, you will need to copy it into your app’s project.

Copy and Include AAR

Copy your Android-release.aar that you built into your app’s libs directory.


Rename it to WhirlyGlobeMaply.aar.

Add the following flatDir directive to your Build.gradle (Project: HelloEarth) file inside of the allprojects > repositories directive.

allprojects {
    repositories {
        flatDir {
            dirs 'libs'

Next add the following packages to the end of the dependencies directive in Build.gradle (Module: app).

  • compile 'com.squareup.okhttp:okhttp:2.3.0'
  • compile(name:'WhirlyGlobeMaply', ext:'aar')
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile ''
    compile ''
    compile 'com.squareup.okhttp:okhttp:2.3.0'
    compile(name: 'WhirlyGlobeMaply', ext: 'aar')

Android Studio will ask you to sync Gradle. If all goes well, it will sync without complaint.

Gradle Sync

Example App

Besides this “Hello Earth” project, there is an example app you can try out called AutoTesterAndroid. This is optional, but it is the quickest way to see something work. We have brief instructions for you to build AutoTesterAndroid.