How to make a kernel package for Raspberry Pi?
 

I know about this helpful manual, but I don't understand what to do with compiled files. In x86 it's easy, but there are some kernel.img files. So I can't find any slackbuild to make a package. I know about source/ directory in the repo, but I think it's not for raspberry pi. Thanks!

Would you be able to rename the topic to include "Raspberry Pi" ? I was poised to write short treatise on how to build a Kernel using the build scripts in the ARM source tree, but as you noticed - it does not support the Raspberry Pi since it's not an officially supported device.
If someone were to search the forums for a similar question, it'd help to have a subject line more closely representing the question.

Thanks

Ok, thanks.

Can you explain what you are trying to achieve as an end result?

I want a package like this.

What version of Raspberry Pi are you building a kernel for?
Are you starting from scratch with building the kernel or do you have it already built and just want to make a package to install it?

When I needed to learn about Slackware packages I found Mozes' introduction to Slackware Packages (.PDF) a great resource. I pretty much picked up everything I needed to know from there, and Slack Docs was a great help too.

Raspberry Pi 3. I'm going to build the kernel and package it. I know how to use makepkg, but I don't understand the format of /boot.

In the /boot directory you need the Raspberry Pi firmware, including the /boot/overlays directory, and of course the kernel7.img

<edit> you could simply explode the sarpi3-boot-firmware-armv7-1_slackcurrent_fd0.txz package to view the contents and recreate it with your own kernel and latest firmware included.