library/custom_rules.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="glide-rules" default="help">
    <xmlproperty file="AndroidManifest.xml" prefix="mymanifest" collapseAttributes="true"/>

    <target name="jar" depends="-compile">
        <jar destfile="bin/glide-${mymanifest.manifest.android:versionName}.jar"
            basedir="bin/classes" >
            <zipgroupfileset dir="libs" includes="disklrucache*.jar,volley.jar" />
        </jar>
    </target>
</project>