Ant script that generates jar with properly configured Manifest

manifest-class-path.xml

<?xml version="1.0" encoding="utf-8" ?>
<project name="mcm2" default="dist" basedir=".">
    <description>
        mcm2: hadoop job to compute diagnosis correlation 
    </description>
  <!-- set global properties for this build -->
  <property name="src" location="src"/>
  <property name="build" location="build"/>
  <property name="dist"  location="dist"/>
  <property name="includeantruntime" value="false" />
  
  <path id="lib.path">
      <fileset dir="lib">
          <include name="**/*.jar" />
      </fileset>
  </path>

  <target name="init">
    <!-- Create the time stamp -->
    <tstamp/>
    <!-- Create the build directory structure used by compile -->
    <mkdir dir="${build}"/>
  </target>

  <target name="compile" depends="init"
        description="compile the source " >
    <!-- Compile the java code from ${src} into ${build} -->
    <javac srcdir="${src}" destdir="${build}" classpathref="lib.path" includeantruntime="false"/>
  </target>

  <target name="dist" depends="compile"
        description="generate the distribution" >

    <!-- taken from http://martin.ankerl.com/2005/11/30/howto-create-manifestmf-classpath-from-ant/ -->
    <!-- create a property containing all .jar files, prefix lib/, and seperated with a space -->
    <pathconvert property="libs.project" pathsep=" ">
      <mapper>
        <chainedmapper>

          <!-- remove absolute path -->
          <flattenmapper />

          <!-- add lib/ prefix -->
          <globmapper from="*" to="../lib/*" />
        </chainedmapper>
      </mapper>

      <path>

        <!-- lib contains all jar files, in several subdirectories -->
        <fileset dir="lib">
          <include name="**/*.jar" />
        </fileset>
      </path>
    </pathconvert>
                
    <jar destfile="${dist}/${ant.project.name}.jar" basedir="${build}">
        <manifest>
           <attribute name="Main-Class" value="org.umich.umms.McmJob"/>
            <attribute name="Class-Path" value="${libs.project}"/>
         </manifest>
     </jar>

  </target>

  <target name="clean"
        description="clean up" >
    <!-- Delete the ${build} and ${dist} directory trees -->
    <delete dir="${build}"/>
    <delete dir="${dist}"/>
  </target>
  
  <target name="run" depends="dist">
      <java jar="${dist}/${ant.project.name}.jar" classpathref="lib.path" fork="true">
          <arg value="mcm/in" />
          <arg value="mcm/out" />
      </java>
  </target>
  
  <target name="man" depends="dist">
    <manifestclasspath property="mf" jarfile="mcm2.jar">
        <classpath refid="lib.path" />
    </manifestclasspath>
    <echo message="${mf}" />
  </target>
</project>