--- libcommons-fileupload-java-1.2.1.orig/build.xml
+++ libcommons-fileupload-java-1.2.1/build.xml
@@ -84,6 +84,7 @@
       </src>
       <classpath refid="build.classpath">
       </classpath>
+      <exclude name="**/portlet/*.java"/>
     </javac>
     <mkdir dir="${classesdir}/META-INF">
     </mkdir>