pmd/pmd-eclipse-plugin/build.xml

<project name="pmd" default="plugin" basedir=".">

  <property file="local.properties" />

  <property name="dir.build" value="build"/>

  <property name="eclipse.home" value="/usr/java/eclipse"/>
  <property name="eclipse.pde.version" value="3.4.1.R34x_v20080805"/>
  <property name="eclipse.launcher.version" value="1.0.101.R34x_v20080819"/>

  <target name="clean">
    <delete dir="${dir.build}" />
  </target>

  <target name="init">
    <mkdir dir="${dir.build}" />
    <copy file="${eclipse.home}/plugins/org.eclipse.pde.build_${eclipse.pde.version}/templates/headless-build/build.properties" tofile="build.properties" overwrite="true" />

    <concat destfile="build.properties" append="true">
      <fileset dir="." includes="custom_build.properties"/>
    </concat>
    <replace file="build.properties" token="buildDirectory=buildDir" value="buildDirectory=${basedir}"/>
  </target>

  <target name="plugin" depends="init">
    <java jar="${eclipse.home}/plugins/org.eclipse.equinox.launcher_${eclipse.launcher.version}.jar" fork="true">
      <arg value="-application"/>
      <arg value="org.eclipse.ant.core.antRunner"/>
      <arg value="-buildfile"/>
      <arg value="${eclipse.home}/plugins/org.eclipse.pde.build_${eclipse.pde.version}/scripts/build.xml"/>
      <arg value="-Dbuilder=${basedir}"/>
    </java>
    <move todir="${dir.build}">
      <fileset dir="${basedir}">
        <include name="assemble.net.sourceforge.pmd.eclipse.*"/>
        <include name="final*Versions.*"/>
        <include name="package.net.sourceforge.pmd.eclipse.*"/>
      </fileset>
    </move>
  </target>

</project>