How to build a module for Android?

Question

linux

There was a need to build a driver for android 6 with the received root. The driver for linux was found, but I don’t know how to rebuild the kernel with the necessary module on android, I found links that didn’t answer my questions
For example: here or here because I don’t know where to get a copy of the kernel sources (not on w3bsit3-dns.com, or I’m very bad searched) in the first instruction and in the second there is no config.gz file in the device (Asus ZenPad 8)

Answer 1

To build the module, the kernel of the same version from another device will suffice. (VERMAGIC must match yours exactly) For my device, I tried to match by random (configured the kernel, compiled the module, tried insmod'nut, looked at the logs, configured again ...)