Saturday, 17 January 2009

How to really build a nice Debian kernel package in a clean way

There are a lot of manuals around. So why do I want to add another? Because I want to eliminate some not so clever hints and remarks. First and most importantly of all: there is NO step which has to be done as root in the whole kernel package building process (provided that the necessary tools are installed). I do it as me, ben.
Many of the following steps can be replaced by GUI action. There is no reason not to use the GUI, e.g. file-roller for extraction etc. I will give the commands, anyway.

Let's get started by installing some necessary tools. If you encounter other packages which are not installed on a typical Debian/Ubuntu/gNewSense system, please let me know.

ben@bearfoot:~$ sudo -s
root@bearfoot:~# apt-get install fakeroot kernel-package build-essential libncurses5-dev
root@bearfoot:~# exit

We will work in the directory ~/kernel:

ben@bearfoot:~$ mkdir kernel
ben@bearfoot:~$ cd kernel

Download the sources for a free kernel at
http://www.fsfla.org/svnwiki/selibre/linux-libre/
, e.g.:
ben@bearfoot:~$ wget -c http://www.fsfla.org/svnwiki/selibre/linux-libre/download/releases/2.6.28-libre/linux-2.6.28-libre.tar.bz2
ben@bearfoot:~$ tar -jxf linux-2.6.28-libre.tar.bz2
ben@bearfoot:~$ cd linux-2.6.28

The next step will enable you to use an existing kernel configuration as a base for your new config:
ben@bearfoot:~$ cp /boot/config-{your-latest-version} ./.config
ben@bearfoot:~$ make menuconfig
ben@bearfoot:~$ fakeroot make-kpkg clean
ben@bearfoot:~$ fakeroot make-kpkg buildpackage --initrd --append-to-version=-libre-ben --revision 20090117

The execution of the last command may take a lot of time, depending on your machine, your kernel configuration and what you do on the machine during compile time. On a Pentium 4 2.4GHz with 1.5GB RAM running gNewSense it took about... well, it is not finished yet. Will tell you next time.

3 comments:

Tu said...
This comment has been removed by the author.
Camelek said...

There is no package named "kernelpackage", please change that to:
"kernel-package" :]
Thank you for your article about Debian custom kernel instalation :]

ben said...

thanks for your remark. i changed the package name in the article.
ben