kotlin-fork/compiler/testData/integration/ant/jvm/fork/build.xml

<project name="Ant Task Test" default="build">
    <taskdef resource="org/jetbrains/kotlin/ant/antlib.xml" classpath="${kotlin.lib}/kotlin-ant.jar"/>

    <target name="premain">
        <sequential>
            <javac srcdir="${test.data}/premain" destdir="${temp}" includeAntRuntime="false"/>
            <jar destfile="${temp}/premain.jar"
                 basedir="${temp}"
                 excludes="*.java *.jar">
                <manifest>
                    <attribute name="Premain-Class" value="Premain"/>
                </manifest>
            </jar>
        </sequential>
    </target>

    <target name="build" depends="premain">
        <kotlinc src="${test.data}" output="${temp}/fork.jar" fork="true">
            <jvmarg value="-Xms64m"/>
            <jvmarg value="-Xmx128m"/>
            <jvmarg value="-javaagent:${temp}/premain.jar"/>
            <compilerarg value="-nowarn"/>
        </kotlinc>
    </target>
</project>