Android编译m、mm、mmm指令

• aosp源码位置：build/envsetup.sh
  • 包含描述编译指令的作用。

• m: Makes from the top of the tree.
• mm: Builds and installs all of the modules in the current directory, and their
  dependencies.
• mmm: Builds and installs all of the modules in the supplied directories, and their
  dependencies.
  To limit the modules being built use the syntax: mmm dir/:target1,target2.
• mma: Same as ‘mm’
• mmma: Same as ‘mmm’

• 使用：在对应的文件目录下执行mm/mmm等。