is it possible to set a variable in classpath in Eclipse 3.1 ?

[Edward Chen]

 <target name="compile">
    <mkdir dir="${classes.dir}"/>
    <javac srcdir="${java.src.dir}" destdir="${classes.dir}">
      <classpath>
        <pathelement path="${classpath}"/>
        <fileset dir="${lib.dir}">
          <include name="**/*.jar"/>
        </fileset>
        <fileset dir="${spring.home}/lib">
          <include name="**/*.jar"/>
        </fileset>
        <pathelement location="${spring.home}/dist/spring.jar"/>
      </classpath>
    </javac>
  </target>

I always have classpath problem in Eclipse 3.1. I want to import a pure ant project into a "java project" in Eclipse. Then I set a "lib" directory as library folder. For example, in the above ant task, it will be a big job to copy all jars in Spring to this "lib".

Now I am wondering, is it possible to set a variable in classpath, like

<classpath>
  < !-- something like this -->
  <classpathentry kind="lib" link_path_1="${spring.home}/dist/spring.jar"/>
  <classpathentry kind="lib" link_path_2="${spring.home}/lib/*.jar"/>
</classpath>

How to do this? I hope I make myself clear.

Thanks.

[edited to escape < so XML shows]
[ April 20, 2006: Message edited by: Jeanne Boyarsky ]