https://unix.stackexchange.com/questions/208638/linux-kernel-meaning-of-source-tree-in-tree-and-out-of-tree
A quick search Google shows many results.
https:/ /unix.stackexch ange.com/ questions/ 208638/ linux-kernel- meaning- of-source- tree-in- tree-and- out-of- tree
A quick search Google shows many results.