Enabling kernel module doesn't work when building the kernel

[privat.danie...@gmail.com]

Hi,

wasted like 60 hours + on this, and still do not have a solution. I simply want to build the kernel 4.19 with 1 module enabled which is not enabled by default (CONFIG_TCG_CRB).
I set it to y inside src/third_party/kernel/v4.19/chromeos/config/base.config and run ./setup_board --board=${BOARD} and ./build_packages --board=${BOARD}. It builds the kernel from source but the module still is not built into it. Can it be that hard to enable one module or am I missing something? What would be the "most simple and fast" way to get it working? I already spent too much time and I don't really care anymore if it's done cleanly or not, I simply want it to work. Any ideas or help is welcome.

regards

[Jon Does]

Is the correct kernel version being built?  Maybe you're modifying the wrong kernel that's being compiled?

[privat.danie...@gmail.com]

I used the USE flag "kernel-4_19" and edited accordingly src/third_party/kernel/v4.19/chromeos/config/base.config.
However, I checked the kernel sources after ./build_packages within the chroot in /build/$BOARD/var/cache/portage/sys-kernel/chromeos-kernel/. For some reason it doesn't add the kernel module I added inside the base.config previously. I have literally no clue what the problem is.

regards

[Adam Kearn]

Hey you need to cros_workon the kernel before you can edit it use these commands 

# run this to work on the build
cros_workon --board=${BOARD} start sys-kernel/chromeos-kernel-4_19

# remove old kernel from build

emerge-${BOARD} -C sys-kernel/chromeos-kernel-4_4

# build different kernel from local source
cros_workon --board=${BOARD} start sys-kernel/chromeos-kernel-4_19

cd ~/trunk/src/third_party/kernel/v4.19

###<modify kernel config or source if you want>###
emerge-${BOARD} sys-kernel/chromeos-kernel-4_19

# build image
./build_packages --board=${BOARD} chromeos-kernel-4_19

./build_packages --board=${BOARD}

./build_image --board=${BOARD} --noenable_rootfs_verification test

[Adam Kearn]

Hey

Were you able to get it working with those commands I sent you above?

-Adam

[privat.danie...@gmail.com]

Thanks you very much Adam! Worked like a charm.

regards