1. Android buid
  - Download original android source code (froyo) from http://source.android.com                    
  - Untar opensource packages of Thunder_Froyo.tar.gz into downloaded android source directory 
  - And, merge the source into the android source code(froyo)
  - Run following scripts to build android                          
    a) . ./build/envsetup.sh                                         
    b) choosecombo 1 1 generic 3                                     
    c) make -j4                                                      
  - When you compile the android source code, you have to add google original prebuilt source(toolchain) 
    into the android folder 
  - After build, you can find output at out/target/product/generic  
  
2. Kernel Build
  - Untar using follwwing command at the android folder
    	tar zxvf Thunderc_Kernel.tar.gz
  - cd Kernel
  - make thunderc-sprint-perf_defconfig
  - make

3. After Build, You Can find the build image at arch/arm/boot