How to build source kernel

[flebber]

I have found the fedora docs for building a kernel.
http://fedoraproject.org/wiki/Building_a_custom_kernel
This guide assumed that I would build from a src.rpm. If I wanted to build 3.7 directly from kernel.org sources then what steps are missing from the guide or is there a better guide?

http://leigh123linux.fedorapeople.or...1.fc19.src.rpm

[jpollard]

It is also documented in the source... Look in the README file as there are a number of variations.

The big one to remember is to copy a working initial configuration (this saves a LOT of time when starting) with "cp /boot/config-<version> .config" before running "make [menu|x|g|old|silent|...]config" (whichever you choose, and there are a fair number of options). This is where you can make custom configuration selections.

Once the configuration is completed, you can then do
1) make - which builds the kernel
2) make modules -- which builds modules (this step is sometimes dropped)
3) as root: make modules_install install
This last step will create modules (if not already created), install them in /lib, and create the initrd. The "install" target will put the kernel, config file, and initrd in /boot.

On my non-EFI the last steps put the kernel and initrd in /boot.

You will have to edit the grub boot menu to add that custom kernel to the menu.

---------- Post added at 09:55 AM ---------- Previous post was at 09:53 AM ----------

Most of the time, there is no issue with the kernel (I've done it several times to get patches that haven't yet made it to the repositories, which can take a month or so).

[flebber]

Thanks to the replies.

Is there any advantage in using Leigh123 src.rpm for 19 in F18 or has he just built the modules as in steps 1 & 2 of @jpollard guide?

[jpollard]

It was my understanding that the source rpms were the same as that used for the binary rpm... so using them shouldn't make any difference. I don't know if the .config file is included though.

Originally Posted by jpollard

It was my understanding that the source rpms were the same as that used for the binary rpm... so using them shouldn't make any difference. I don't know if the .config file is included though.

I didn't change the .config

[jpollard]

Then you should get exactly the same binaries.

The only use of compiling a kernel would be to get either different configuration options, or to compile a generic kernel - in which case there is no .config to start with, and won't be in a source rpm...

[flebber]

Thank You for clarifying