kotlin-fork/compiler/integration-tests/testData/ant/js/sourcemap/build.xml

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

  <target name="build">
    <kotlin2js src="${test.data}/root1" output="${temp}/out.js" sourcemap="true"/>
  </target>
</project>