I'm having trouble including the guava (guava-libraries - Guava: Google Core Libraries for Java 1.5+ - Google Project Hosting) library in my ant build script for lucene (lucene-3.5.0/build.xml). I'm trying to build the demo with the addition specified in the answer to this question: mysql - Detect duplicate English names - Stack Overflow

I have been able to successfully include the library in a standalone project

I get the error:
> common.compile-core:
> [javac] Compiling 2 source files to /Users/seb/lucene-3.5.0/build/contrib/demo/classes/java
> [javac] /Users/seb/lucene-3.5.0/contrib/demo/src/java/org/apache/lucene/demo/NameDuplicateTests.java:17:
> package com.google.common.collect does not exist
> [javac] import com.google.common.collect.HashMultimap;

I have added the jar file to my classpath via
>export CLASSPATH=$CLASSPATH:/$HOME/guava-10.0.1.jar

and made a similar change to /System/Library/Java/JavaConfig.plist

I have added the following to lucene-3.5.0/build.xml

<!-- Build classpath --> <path id="classpath">
<pathelement location="${build.dir}/classes/java"/>
<pathelement location="$HOME/guava-10.0.1.jar"/> </path>

I have the correct include statements in my java file, eg.

import com.google.common.collect.HashMultimap;