嵌入式-ubuntu安装yocto
1.安装ubuntu 16.04预留120G空间，推荐2G内存
2.更新（不成功多试几次）
sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \
build-essential chrpath socat cpio python python3 python3-pip python3-pexpect \
xz-utils debianutils iputils-ping libsdl1.2-dev xterm
3.安装辅助软件
sudo dpkg --configure -a
sudo apt install chrpath
sudo apt install gawk
sudo apt install git
sudo apt install texinfo
chrpath gawk git makeinfo