安装Rockchip平台工具链

搭建用于编译Android的环境，建议使用64位的Ubuntu 16.04，需要安装如下软件包：

$ sudo apt-get install bison g++-multilib git gperf libxml2-utils make python-networkx zip
$ sudo apt-get install flex curl libncurses5-dev libssl-dev zlib1g-dev gawk minicom
$ sudo apt-get install exfat-fuse exfat-utils device-tree-compiler liblz4-tool
$ sudo apt-get install openjdk-8-jdk

• 更多说明可查看 https://source.android.com/source/initializing.html;