Android6.0 compilation process

1, buy a vpn account
2, select the ubuntu version, when compiling the source code of 6.0, it seems that it can only be used on a 64-bit system. [Available to install ubuntu on a virtual machine] 3. You can download it by referring to the steps on the official
website. 4. After downloading, there is 40G. It took two days to download 5. After the download is completed, you need to install the tools before compiling: sudo apt-get install git- core gnupg flex bison gperf build-essential \   zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 \   lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache \   libgl1-mesa-dev libxml2-utils xsltproc unzip 6, follow the steps on the official website to start compiling. ps: It was downloaded on the ubuntu 15.10 32-bit system for the first time, and the compilation failed after the download was successful.    Then change to the system 14.02 64-bit system to download, the download is always unsuccessful, and then change to the 15.04 64-bit system for a successful download. The first compilation failed because step 5 was not executed. After executing step 5, make -j16 success. Screenshot after success. Now at 10:04:43 on May 26, 2016, proceed to the next step and install it on the phone