Ubuntu18.04编译小米官方Redmi K40内核

背景

在Ubuntu18.04中编译小米官方内核Redmi K40的内核，环境配置等。

alioth-r-oss Mi 10S, Redmi K40 Android R LA.UM.9.12.r1-08000-SMxx50.0

代码下载

aosp@ubuntu:~/k40$ git clone https://github.com/MiCode/Xiaomi_Kernel_OpenSource.git -b alioth-r-oss --depth=1
Cloning into 'Xiaomi_Kernel_OpenSource'...
remote: Enumerating objects: 69273, done.
remote: Counting objects: 100% (69273/69273), done.
remote: Compressing objects: