2. Install Tools

PC OS	Network
ubuntu21.04	online

sudo apt-get install repo git ssh make gcc libssl-dev liblz4-tool expect g++ patchelf chrpath gawk texinfo chrpath diffstat binfmt-support qemu-user-static live-build bison flex fakeroot cmake gcc-multilib g++-multilib unzip device-tree-compiler ncurses-dev

If an error occurs during compilation, you can view the error message and install the corresponding software package.

eg.

Error

ERROR: No python2

Solutions

sudo apt-get install python2

Error

/usr/bin/env: ‘python’: No such file or directory

Solutions

sudo apt install python-is-python3