build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="AsmackLibrary" default="library">

    <property file="local.properties"/>
    <property file="build.properties"/>
    <property file="default.properties"/>

    <path id="android.antlibs">
        <pathelement path="${sdk.dir}/tools/lib/anttasks.jar" />
        <pathelement path="${sdk.dir}/tools/lib/sdklib.jar" />
        <pathelement path="${sdk.dir}/tools/lib/androidprefs.jar" />
        <pathelement path="${sdk.dir}/tools/lib/apkbuilder.jar" />
        <pathelement path="${sdk.dir}/tools/lib/jarutils.jar" />
    </path>

    <taskdef
        name="setup"
        classname="com.android.ant.SetupTask"
        classpathref="android.antlibs"
    />

    <setup />

    <target name="library" depends="-dirs,compile,-post-compile,-package-resources"
                description="Builds the application and signs it with a debug key.">
        <jar destfile="${out.absolute.dir}/${ant.project.name}-plain.jar" basedir="${out.classes.absolute.dir}" />
        <zip destfile="${out.absolute.dir}/${ant.project.name}.jar" duplicate="preserve">
            <fileset dir="${out.classes.absolute.dir}">
                <include name="**/*" />
            </fileset>
            <zipgroupfileset dir="libs" includes="*.jar"/>
        </zip>
    </target>

</project>