Group:Linux-libre Kernel

Welcome in the Linux Libre Kernel Group - Every One is Free to Join!

current_status Active

irc #linux-libre

contact aurelien

note LK group for Linux Libre Kernel hacktivists

LAST OUT '2.6.38.3 linux libre kernel .deb available from April the 15 2011'

              'You work on different type of architecture and/or operating system please join'

website http://www.fscorsica.org (At the time you have build a linux libre kernel without modification on the base configuration you are welcome to link your website to share your works)

members aurelien parsifal

architecture 32 bits

operating system Debian Squeeze on fully free repositories

The Linux Libre Kernel Group as been created to help people to construct and compile their own Linux Libre Kernel from http://www.fsfla.org

1st goal establish a working compilation recipe (without change from the basic linux kernel configuration distributions but free as in freedom)

2nd goal offer a Linux Libre Kernel Optimization Solution - LKOS a guide to bring some optimizations on your own linux libre kernel

3rd goal keep old receipe at fscorsica.org/old to offer solutions for people which need to works on old solutions

One of the simply way to compile your own Linux Libre Kernel for your distribution is (This example as been made on a Full Libre GNU / Linux Debian Operating System)

You can find the .deb of this linux libre kernel at :: http://www.fscorsica.org/kernel-en.html

You can find the .deb of an LKOS example at :: http://www.fscorsica.org/lkos-en.html

'How-To-compile-your-own-linux-libre-kernel-on-free-debian-based'

Linux Libre-Kernel version :: 2.6.38.3

Last edit Tuesday the 15 April 2011.

Type: GNU documentation

License: GNU Free Documentation License

Made on Operating System : Debian Sqeeze with free software only

Distribution: GNU / linux

This part is important and long (depending on the computers you have got)

If you are running on a fresh install or if you never made that type of operation before, you will need to install packages needed for linux libre kernel compilation. First, make sure your apt database is updated

All command must be made under root

Get the root power with su or sudo

su
aptitude update

Install the needed packages

aptitude install fakeroot kernel-package libncurses5-dev libqt3-mt-dev bzip2 wget build-essential

In a web browser go to last linux libre kernel release you can launch from another buffer of your emacs or terminal if you use tty

links http://www.linux-libre.fsfla.org/pub/linux-libre/releases/

Copy the link adress of the linux libre kernel version you want.

In a terminal go to /usr/src and get the source :

wget http://www.linux-libre.fsfla.org/pub/linux-libre/releases/2.6.38.3-libre/linux-2.6.38.3-libre.tar.bz2

Uncompress the archive file

tar xvjf linux-2.6.38.3-libre.tar.bz2

Go to the newly created directory of the uncompressed source

cd linux-2.6.38.3

Enter

you have to edit a file in the linux libre kernel source before compiling

Edit on > linux-2.6.38.3/Documentation/lguest/Makefile

emacs Documentation/lguest/Makefile
all: lguest
to
all:

save and close (under emacs C-x C-s)

Now you can start the compilation of the last linux libre kernel

normaly at this point you are already in /usr/src/linux2.6.38.3

make clean mrproper

Now, you can review and change config variables. First, update your config file to the new options of the linux libre kernel source

make nconfig
F6 to save the .config
F9 to quit

This will open an application that classifies and explains the properties and available modules you can either 'build into' the linux libre kernel, make modularly available or disable. When you are done, save it and exit.

make-kpkg clean

Now you have to create a file ::

create the version.h file in the linux-2.6.38.3/include/linux containing ::

emacs include/linux/version.h
#define UTS_RELEASE "2.6.38.3-libre-planet"  <- (here change libre-planet by what you want)

C-x C-s save the file in /usr/src/linux-2.6.38.3/include/linux/version.h

Now, you can build your linux libre kernel, enter

fakeroot make-kpkg --initrd --append-to-version=-planet kernel_image kernel_headers kernel_source

You can change "planet" by the value you have choose when you have create the utsrelease.h file. Optionally, you can add kernel_source at the end, if you want to build a source pack. You can also put CONCURRENCY_LEVEL=N (where N should be replaced by the number of CPU cores your computer has) at the beginning of the command to make the building process take advantage of multiple core systems.

The last command will take some time to complete. At the end, you will have linux-image and linux-headers (and linux-source if you chose) installation files.

go to linux-image and linux-headers files to the directory you want. Then, either go to that directory in terminal with cd command and install the two .deb packages:

Now you've got your own libre-kernel files in /usr/src

dpkg -i linux-image-2.6.38.3-libre-planet.deb
dpkg -i linux-headers-2.6.38.3-libre-planet.deb
dpkg -i linux-source-2.6.38.3-libre-planet.deb

Or

dpkg -i *b (if the directory is clean)

Or, just double-click on the two files and click on the Install Package button.

Restart and choose libre-planet kernel from your GRUB.

If you build you own Linux Libre Kernel and share it arround it can be usefull to generate the md5 checksum

md5sum linux-image-2.6.38.3-libre-planet.deb > linux-image-2.6.38.3-libre-planet.deb.md5

Special Thanks to

The Free Technologie Academy :: http://www.ftacademy.org
Linux advanced administration manual :: first version of the receipe
For the participation on the receipe 2.6.32 :: Ali Gundunz http://www.aligunduz.org/articles/buildkernel.html Ali Gundunz :: gndz.ali(at)gmail(dot)com
For the modification part on the /linux-2.6.32.5/lguest/Makefile Damian Fossi :: damianfossi(at)gmail(dot)com

This document is under GNU Free Documentation License Last modification bring April the 15 2011.