
There are multiple directories provided here. The release directory
contains the camera GPL source package.  The tools provid binary toolchain.
The toolchain-src provide the source code of toolchain. 

The compiling environment:
    o We recommend you use "Centos 6.4" 

To install the tools:
    o mkdir /opt/crosstool
    o copy the grain-media/arm-none-linux-gnueabi-4.4.0_ARMv5TE directory to /opt/crosstool

To build the source code:
 O To Build linux kernel
 	o cd release/src
 	o type 'make kernel'
 o To build U-boot
	o cd release/src
 	o type 'make bootloader'
 o To build GPL src code
	o cd release/src
	o type 'make all'

To build the toolchain:
 o cd toolchain-src
 O type './gen_toolchain'
