nutch 0.9 - unable to compile source

[Shailendra Mudgal]

Hi,
I downloaded nutch0.9 . And trying to compile it on local machine.
It is giving compilation error :

compile:
     [echo] Compiling plugin: clustering-carrot2
    [javac] Compiling 4 source files to
/nutch/build/clustering-carrot2/classes
    [javac]
/nutch/src/plugin/clustering-carrot2/src/java/org/apache/nutch/clustering/carrot2/Clusterer.java:26:
cannot find symbol
    [javac] symbol  : class HitsCluster
    [javac] location: package org.apache.nutch.clustering
    [javac] import org.apache.nutch.clustering.HitsCluster;
    [javac]                                   ^
    [javac]
/nutch/src/plugin/clustering-carrot2/src/java/org/apache/nutch/clustering/carrot2/Clusterer.java:27:
cannot find symbol
    [javac] symbol  : class OnlineClusterer
    [javac] location: package org.apache.nutch.clustering
    [javac] import org.apache.nutch.clustering.OnlineClusterer;
    [javac]                                   ^
    [javac]
/nutch/src/plugin/clustering-carrot2/src/java/org/apache/nutch/clustering/carrot2/Clusterer.java:28:
package org.apache.nutch.searcher does not exist
    [javac] import org.apache.nutch.searcher.HitDetails;
......

I am using java java version "1.6.0_03" and ant-1.6.5. The Operating System
i am using is Ubuntu (2.6.22 kernel).  I have JAVA_HOME, NUTCH_HOME,
NUTCH_JAVA_HOME in my classpath.

Thanks in advance  ..