build.xml

<project name="shortly" default="dist" basedir=".">
    <property name="app" value="agbshorturl"/>
    <target name="dist">
        <mkdir dir="dist"/>
        <delete dir="dist/temp"/>
        <mkdir dir="dist/temp/chrome"/>
        <mkdir dir="dist/temp/defaults"/>
        <zip destfile="dist/temp/chrome/${app}.jar">
            <fileset dir="chrome/${app}/"/>
        </zip>
        <copy file="chrome.manifest" todir="dist/temp"/>
        <copy file="install.rdf" todir="dist/temp" />
        <copy file="gpl.txt" todir="dist/temp"/>
        <copy todir="dist/temp/defaults">
            <fileset dir="defaults"/>
        </copy>
        <zip destfile="dist/${ant.project.name}.xpi">
            <fileset dir="dist/temp"/>
        </zip>
        <delete dir="dist/temp"/>
    </target>
</project>