How to integrate Amazon Game Circle using Ant?

Question

I have an Android game that is compiled using Ant and I try to integrate it with Amazon Game Circle. My project and GameCircleSDK look similar in structure: both contain jni/, libs/, res/ and other standard directories for Android. To integrate Game Circle, Amazon's documentation only touches Eclipse and instructs to include Game Circle in the workspace and add it as a dependency.

What is the equivalent for this in Ant? I would like to keep Game Circle out of my source tree and still compile against it, get all JARs and resources.

The build.xml and the rest of the build files I currently use are the default ones generated by android create project. I'm posting it here for reference (stripped down the default comments):

<?xml version="1.0" encoding="UTF-8"?>
<project name="Game" default="help">
    <property file="local.properties" />
    <property file="ant.properties" />

    <property environment="env" />
    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
        <isset property="env.ANDROID_HOME" />
    </condition>
    <loadproperties srcFile="project.properties" />

    <fail
            message="sdk.dir is missing."
            unless="sdk.dir"
    />

    <import file="custom_rules.xml" optional="true" />
    <import file="${sdk.dir}/tools/ant/build.xml" />
</project>

Answer 1

Here's how you do it:

1. Add the the SDK as a reference in project.properties. The path must be relative.

   android.library.reference.1=../../relative/path/to/gamecircle

2. Add a build.xml to GameCircle by running android update lib-project -p /path/to/gamecircle.