using kpkg to build kernels

27 Nov 2005

Using kpkg to Build Kernels

Preparation

make backup floppy

mkboot /boot/kernel...

add myself to src group (logout & login)

sudo adduser sonia src

check groups

groups

install pre-reqs

apt-get install gcc kernel-package debhelper
 dpkg-dev libncurses5-dev fakeroot g++ build-essential devscripts

configure package compiler name, etc

vi /etc/kernel-pkg.conf

clean up old sources/links, if required

cd /usr/src
 sudo rm -rf linux*

download & install debian kernel source

sudo apt-get install linux-source-2.6.10
 sudo tar jxvf linux-source-2.6.123.tar.bz
 sudo chown -R root.src linux-source-2.6.123
 sudo ln -s linux-source-2.6.123 linux

Use linux-source (or linux-tree?) for Ubuntu; kernel-source comes from Debian, linux-source comes from Ubuntu. All the dependencies haven’t been changed over yet, though, so if you get warnings about “uninstalled package kernel-source” even though linux-source is installed, you can safely ignore them. Can sometimes also just download linux-headers-`uname -r`

check prereqs

cd /usr/src/linux/scripts
 ./ver_linux

Configure

cd /usr/src/linux
 cp /boot/config_foo .config
 make oldconfig (can also use --config oldconfig in make-kpkg)
 make xconfig or make menuconfig

update debian/changelog (will appear after first build)

dch -i

Build Image

cd /usr/src/linux
 make-kpkg clean
 fakeroot make-kpkg --initrd --append-to-version=.sonia.001 kernel-image --config oldconfig
 fakeroot make-kpkg --initrd --append-to-version=.sonia.001 kernel_image modules_image
 fakeroot make-kpkg --initrd --append-to-version=.sonia.001 --added-modules=madwifi modules_image

or some combo of the above.
don’t use –revision – versions aren’t handled correctly

Install

cd ..
 dpkg -i kernel-image-2.6.....
 dpkg -i modules...

hold kernel, so not accidently upgraded

aptitude, search for sonia

find current status

(dpkg -l truncates) ?? gives wrong result.

dpkg --get-selections | grep kernel

backup config from /boot, and .deb files

distcc

“Note”
If distcc process killed whilst troubleshooting, etc, remove ~/.distcc check all gcc’s about the same version, with `gcc -v` (first 2 digits important)

install pre-reqs (probably excessive)

apt-get install distcc gcc kernel-package debhelper dpkg-dev libncurses5-dev fakeroot

config /etc/default/distcc

ALLOWEDNETS="127.0.0.1 192.168.1.0/24"

setup “masquerade” directory

mkdir -p /usr/local/distcc/bin
 cd /usr/local/distcc/bin
 ln -s /usr/bin/distcc c++
 ln -s /usr/bin/distcc cc
 ln -s /usr/bin/distcc g++
 ln -s /usr/bin/distcc gcc

configure environment

CONCURRENCY_LEVEL=40
 DISTCC_HOSTS="localhost hp mango pomelo armada"
 PATH="/usr/local/distcc/bin:${PATH}"

 export CONCURRENCY_LEVEL DISTCC_HOSTS PATH

http://www.myrddin.org/howto/debian-distcc.php
http://distcc.planetmirror.com/faq.html

Sonia Hamilton - Blog

using kpkg to build kernels

27 Nov 2005