2. Install Tools

PC OS	Network	Permission
Ubuntu	online	root

2.1 Install dependent packages

sudo apt-get install u-boot-tools  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-dri:i386 libgl1-mesa-dev g++-multilib tofrodos python-markdown libxml2-utils xsltproc zlib1g-dev:i386 dpkg-dev  libncurses5-dev  libsdl1.2-dev  lib32z-dev ccache  python-pyelftools python3-pyelftools  libssl-dev   liblz4-tool gcc-4.8  g++-4.8  libelf-dev

Note

If the compilation encountered error, please according to the error message install the corresponding software package.

2.2 Install JDK

sudo apt-get update
sudo apt-get install openjdk-8-jdk