1. Android buid (User)
  - Download original android source code (Kitkat Version 4.4.2) from http://source.android.com                    
  - Untar opensource packages of LGD950_Kitkat_V20b_Android.tar.gz into downloaded android source directory 
    a) tar -zxvf LGD950_Kitkat_V20b_Android.tar.gz
  - And, merge the source into the android source code(JellyBean)
  - Run following scripts to build android                          
    a)$source build/envsetup.sh                                      
    b)$choosecombo 1 generic user
    c)$m -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 (User)
  - Uncompress using following command at the android directory
        tar xvzf LGD950_Kitkat_V20b_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 kernel
    a) cd kernel
	b) export PATH=$PATH:tools/lz4demo
	c) make ARCH=arm CROSS_COMPILE=../prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi- z-att-perf_defconfig zImage -j4
	
	* "-j4" : The number, 4, is the number of multiple jobs to be invoked simultaneously. 
	* lz4demo : More information can be found at "https://code.google.com/p/lz4/"
  - After build, you can find the build image(zImage) at arch/arm/boot/
  
3. how to build chromium_lge (vendor\lge\external\chromium_lge\src),
   please refer to README.txt at the folder mentioned above.