Rock/Android Build/zh cn

中文（中国大陆）‎

   给radxa rock编译AOSP(Android Open Source Project)整个安卓系统源码是一项大工程，会很耗费时间和硬盘空间。你可以参考安卓官方的详细系统要求页面。推荐的编译主机是Ubuntu 12.04 64位。在我们的测试编译机器上一次完整编译总共花费了35分钟和30G的硬盘空间。配置intel 4770处理器(四代i7，四核八线程，3.4Ghz)，16G内存和256G固态硬盘(友情提示: 固态硬盘可以极大提高编译速度).

初始化编译环境

   参考了安卓官方的环境搭建教程，下面是我们测试过的在全新的系统上可用的步骤。

安装JDK

   sudo add-apt-repository ppa:webupd8team/java
   sudo apt-get update
   sudo apt-get install oracle-java6-installer

安装所需要的包

   sudo apt-get install git gnupg flex bison gperf build-essential \
   zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev \
   libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-glx:i386 \
   g++-multilib mingw32 tofrodos gcc-multilib ia32-libs\
   python-markdown libxml2-utils xsltproc zlib1g-dev:i386

注意: 在Ubuntu 13.10上，已经没有ia32-libs这个包，不需要安装这个包。

安装ARM交叉编译器和编译内核相关依赖

   sudo apt-get install gcc-arm-linux-gnueabihf
   sudo apt-get install lzop libncurses5-dev
   export ARCH=arm
   export CROSS_COMPILE=arm-linux-gnueabihf-

安装其他所需要的运行库

   sudo apt-get install libssl1.0.0 libssl-dev

Get the source code

   wget http://dl.radxa.com/rock/source/radxa_rock_android.tar.gz  #(mirror1: BaiduYun)
   tar zxf radxa_rock_android.tar.gz
   cd radxa_rock_android
   git checkout .

Or if you can access the private git server, you can clone with the following command:

   git clone -b radxa-dev git@git.linux-rockchip.org:radxa/radxa_rock_android.git
   cd radxa_rock_android

Note: If someone pushed the repo to github, let me know(tom@radxa.com). I have some problems pushing it to github because of large files.

Build the kernel

   export ARCH=arm
   cd kernel
   make rk3188_radxa_rock_defconfig
   make kernel.img #kernel.img is the normal kernel image with rockchip crc
   cd ..

Build android source code

   source build/envsetup.sh
   lunch rk31sdk-eng
   make -j8

Generate the image

   ./mkimage.sh ota

you will get boot.img recovery.img system.img under rockdev/Image, and update.img under rockdev

Flash the image

Next, follow the rock/flash the image to flash the image you just build.