How to compile the kernel, and debug it

Sp4rt4h

Hello,

I am getting back into kernel development, and it appears that the linux kernel's build system has changed. I am trying to debug it on Debian, and I am wondering what the steps are to compile the debug version, install it, and then debug it. Is there a guide anywhere?

opendrain

I use a custom script. from /usr/src/linux

Core part is,

make oldconfig (or menuconfig) 
make clean
make -j8 KALLSYMS_EXTRA_PASS=1 LOCALVERSION=-custom

Then you can prepend with, if needed, ARCH and CROSS_COMPILE variables.

To debug, debug symbols should be enabled in menuconfig.

Then of course you may also check the official guide of your distribution.