diff --git a/build.xml b/build.xml
index cc6e2de..1aad7c0 100644
--- a/build.xml
+++ b/build.xml
@@ -210,6 +210,7 @@
   	   verbose="yes">
       <class name="com.hadoop.compression.lzo.LzoCompressor" />
       <class name="com.hadoop.compression.lzo.LzoDecompressor" />
+      <classpath refid="classpath" />
     </javah>
 
     <exec dir="${build.native}" executable="sh" failonerror="true">
diff --git a/src/contrib/.gitkeep b/src/contrib/.gitkeep
new file mode 100644
index 0000000..e69de29