build.xml

<project name="IntelliJ IDEA Community Edition" default="all">
  <property name="project.home" value="${basedir}"/>
  <property name="out.dir" value="${project.home}/out"/>
  <property name="gant.home" value="${project.home}/build/lib/gant"/>

  <target name="cleanup">
    <delete dir="${out.dir}" failonerror="false"/>
  </target>

  <target name="init">
    <mkdir dir="${out.dir}"/>
  </target>

  <macrodef name="call_gant">
    <attribute name="script" />
    <sequential>
      <java failonerror="true" classname="org.apache.tools.ant.Main" fork="true">
        <jvmarg line="-Xms64m -Xmx512m"/>
        <jvmarg line="&quot;-Dgant.script=@{script}&quot;"/>

        <classpath>
          <fileset dir="${project.home}/lib/ant/lib">
            <include name="*.jar"/>
          </fileset>
          <fileset dir="${gant.home}/lib">
            <include name="*.jar"/>
          </fileset>
        </classpath>

        <arg value="-f"/>
        <arg value="${project.home}/build/gant.xml"/>
      </java>
    </sequential>
  </macrodef>

  <target name="build" depends="init">
    <call_gant script="${project.home}/build/scripts/dist.gant"/>
  </target>

  <target name="all" depends="cleanup,build"/>
</project>