<project name="" default=".classpath">


<path id="classpath">
  <pathelement location="./a.jar"/>
</path>


<target name=".classpath">
   <pathconvert property="eclipse.entries" refid="classpath"
 pathsep="&quot;/&gt;&#10;    &lt;classpathentry kind=&quot;lib&quot; path=&quot;" />  

   <echo file=".classpath"><![CDATA[<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" path="path-to-projectsrc"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
    <classpathentry kind="lib" path="${eclipse.entries}"/>
    <classpathentry kind="output" path="path-to-project-builddir"/>
</classpath>
]]></echo>
</target>


</project>