build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="Overchan" default="help">

    <property file="local.properties" />
    <property file="ant.properties" />

    <property name="java.target" value="1.7" />
    <property name="java.source" value="1.7" />

    <property environment="env" />
    
    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
        <isset property="env.ANDROID_HOME" />
    </condition>
    <condition property="ndk.dir" value="${env.ANDROID_NDK_HOME}">
        <isset property="env.ANDROID_NDK_HOME" />
    </condition>
    <condition property="ndk.cmd" value="ndk-build.cmd" else="ndk-build">
        <os family="windows" />
    </condition>

    <loadproperties srcFile="project.properties" />

    <fail
        message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
        unless="sdk.dir"
    />
    <fail
        message="ndk.dir is missing. Make sure to add ndk.dir=/path/to/android-ndk to local.properties or to inject it through the ANDROID_NDK_HOME environment variable."
        unless="ndk.dir"
    />

    <!-- version-tag: custom -->
    <import file="${sdk.dir}/tools/ant/build.xml" />

    <target name="-pre-build">
        <exec executable="${ndk.dir}/${ndk.cmd}" failonerror="true"/>
    </target>

    <target name="clean" depends="android_rules.clean">
        <exec executable="${ndk.dir}/${ndk.cmd}" failonerror="true">
            <arg value="clean"/>
        </exec>
    </target>

    <target name="javadoc">
        <javadoc encoding="UTF-8" charset="UTF-8" docencoding="UTF-8" sourcepath="src:gen" destdir="javadoc" source="1.7" >
            <classpath>
                <fileset dir="${sdk.dir}">
                    <include name="platforms/${target}/android.jar"/>
                </fileset>
                <fileset dir="libs">
                    <include name="**/*.jar"/>
                </fileset>
            </classpath>
        </javadoc>
    </target>

</project>