Problem building gluegen

Hi,

As the JOGL is crashing after java7u55 update I am trying to make changes inside the JOGL code. So I download the gluegen and jogl code and start building those using the steps mentioned in following link.
http://jogamp.org/jogl/doc/HowToBuild.html

I download the source code and did "ant" inside the gluegen/make/ directory. But it says build failed after some execution. Find below the message.

I am using apache ant 1.9.4 and java 1.8.0_25 on Mac.

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javac] warning: Supported source version 'RELEASE_6' from annotation processor 'com.jogamp.gluegen.structgen.CStructAnnotationProcessor' less than -source '1.8'
    [javac] /Users/Krunal/jogamp/gluegen/src/junit/com/jogamp/gluegen/test/junit/structgen/TestStructGen01.java:4: error: package com.jogamp.junit.util does not exist
    [javac] import com.jogamp.junit.util.JunitTracer;
    [javac]                             ^
    [javac] /Users/Krunal/jogamp/gluegen/src/junit/com/jogamp/gluegen/test/junit/structgen/TestStructGen01.java:13: error: cannot find symbol
    [javac] public class TestStructGen01 extends JunitTracer {
    [javac]                                      ^
    [javac]   symbol: class JunitTracer
    [javac] /Users/Krunal/jogamp/gluegen/src/junit/com/jogamp/gluegen/test/junit/structgen/TestStructGen01.java:22: error: cannot find symbol
    [javac]     RenderingConfig config0;
    [javac]     ^
    [javac]   symbol:   class RenderingConfig
    [javac]   location: class TestStructGen01
    [javac] 3 errors
    [javac] 1 warning

BUILD FAILED
/Users/Krunal/jogamp/gluegen/make/build.xml:987: The following error occurred while executing this line:
/Users/Krunal/jogamp/gluegen/make/build-test.xml:246: The following error occurred while executing this line:
/Users/Krunal/jogamp/gluegen/make/build-test.xml:126: Compile failed; see the compiler error output for details.