Index: solr/build.xml
===================================================================
--- solr/build.xml	(revision 1332907)
+++ solr/build.xml	(working copy)
@@ -205,6 +205,15 @@
       <contrib-crawl target="rat-sources" failonerror="true"/>
     </sequential>
   </target>
+
+  <target name="pmd">
+    <sequential>
+      <ant dir="core" target="pmd" inheritall="false"/>
+      <ant dir="solrj" target="pmd" inheritall="false"/>
+      <ant dir="test-framework" target="pmd" inheritall="false"/>
+      <contrib-crawl target="pmd" failonerror="true"/>
+    </sequential>
+  </target>
   
   <!-- Clean targets -->
   <target name="clean" description="Cleans compiled files and other temporary artifacts.">
Index: lucene/common-build.xml
===================================================================
--- lucene/common-build.xml	(revision 1332907)
+++ lucene/common-build.xml	(working copy)
@@ -1261,6 +1261,25 @@
     </sequential>
   </target>
 
+  <target name="pmd-typedef" depends="ivy-availability-check,ivy-fail">
+    <ivy:cachepath pathid="pmd.classpath" organisation="pmd" module="pmd" revision="4.3" inline="true" log="download-only" type="jar" />
+    <taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask" classpathref="pmd.classpath"/>
+  </target>
+
+  <target name="pmd" depends="pmd-typedef">
+    <sequential>
+      <echo message="PMD analyzing ${name}"/>
+      <mkdir dir="${common.build.dir}/pmd"/>
+      <pmd shortFilenames="true" targetjdk="1.6" rulesetfiles="${common.dir}/lucene-ruleset.xml">
+        <formatter type="html" toFile="${common.build.dir}/pmd/${name}.html"/>
+        <fileset dir="${src.dir}">
+          <include name="**/*.java"/>
+          <exclude name="${pmd.excludes}"/>
+        </fileset>
+      </pmd>
+    </sequential>
+  </target>
+
   <!--+
       | M A C R O S
       +-->
Index: lucene/build.xml
===================================================================
--- lucene/build.xml	(revision 1332907)
+++ lucene/build.xml	(working copy)
@@ -28,7 +28,7 @@
 
   <patternset id="binary.build.dist.patterns"
               includes="docs/,**/*.jar,**/*.war"
-              excludes="poms/**,**/*-src.jar,**/*-javadoc.jar"
+              excludes="pmd/**,poms/**,**/*-src.jar,**/*-javadoc.jar"
   />
   <patternset id="binary.root.dist.patterns"
               includes="LICENSE.txt,NOTICE.txt,README.txt,
@@ -267,6 +267,15 @@
     </sequential>
   </target>
 
+  <target name="pmd">
+     <sequential>
+       <ant dir="core" target="pmd" inheritall="false"/>
+       <ant dir="test-framework" target="pmd" inheritall="false"/>
+       <ant dir="tools" target="pmd" inheritall="false"/>
+       <modules-crawl target="pmd" failonerror="true"/>
+    </sequential>
+  </target>
+
   <!-- ================================================================== -->
   <!-- D I S T R I B U T I O N                                            -->
   <!-- ================================================================== -->
Index: lucene/analysis/build.xml
===================================================================
--- lucene/analysis/build.xml	(revision 1332907)
+++ lucene/analysis/build.xml	(working copy)
@@ -118,5 +118,9 @@
   <target name="rat-sources">
     <forall-analyzers target="rat-sources"/>
   </target>
+
+  <target name="pmd">
+    <forall-analyzers target="pmd"/>
+  </target>
 	
 </project>
Index: lucene/lucene-ruleset.xml
===================================================================
--- lucene/lucene-ruleset.xml	(revision 0)
+++ lucene/lucene-ruleset.xml	(revision 0)
@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<ruleset name="Lucene Ruleset" xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd"
+    xsi:noNamespaceSchemaLocation="http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
+
+  <description>
+    Ruleset for Lucene
+  </description>
+
+  <rule ref="rulesets/unusedcode.xml"/>
+</ruleset>
\ No newline at end of file
Index: build.xml
===================================================================
--- build.xml	(revision 1332907)
+++ build.xml	(working copy)
@@ -65,6 +65,13 @@
     </subant></sequential>
   </target>
 
+  <target name="pmd" description="Runs PMD across all sources">
+    <sequential><subant target="pmd" inheritall="false" failonerror="true">
+        <fileset dir="pmd" includes="build.xml" />
+        <fileset dir="pmd" includes="build.xml" />
+    </subant></sequential>
+  </target>
+
   <target name="resolve" description="Resolves all dependencies">
     <sequential><subant target="resolve" inheritall="false" failonerror="true">
         <fileset dir="lucene" includes="build.xml" />