1. Android build
  - Download original android source code ( android-8.0.0_r28) from http://source.android.com
    {
      $repo init -u git://10.168.177.185/platform/manifest.git -b  android-8.0.0_r28
      $repo sync -cdq -j12 --no-tags
      $repo start  android-8.0.0_r28 --all 
    )
  - And, merge this open source into the android source code
  - Run following scripts to build android
    a) source build/envsetup.sh
    b) lunch 1
    c) make -j4
	
  - When you compile the android source code, you have to add google original prebuilt source(toolchain) into the android directory.
  - After build, you can find output at out/target/product/generic

2. Kernel Build  
  - Uncompress using following command at the android directory
        a) tar -xvzf *_Kernel.tar.gz

  - When you compile the kernel source code, you have to add google original prebuilt source(toolchain) into the android directory.
  - Run following scripts to build 	
  
	 a) cd kernel/msm-3.18/
	 
	 b) mkdir -p ../../out;
	 
	 c) make O=../../out ARCH=arm64 CROSS_COMPILE=~/msm8996_o_diva_mp_180116/android/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android- lucye_tmo_us-perf_defconfig;
	 
	 d) make O=../../out ARCH=arm64 CROSS_COMPILE=$(pwd)/../../prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android- KCFLAGS=-mno-android;



  - After build, you can find the build image(zImage) at out/arch/arm64/boot
