Linux install kernel source

$ git tag -l Ubuntu-* Ubuntu-5.4.0-47.51 Ubuntu-5.4.0-48.52 Ubuntu-5.4.0-49.53 Ubuntu-5.4.0-51.56 Ubuntu-5.4.0-52.57 $

git checkout -b temp Ubuntu-5.4.0-52.57

You may then manipulate the release - for example, by adding new commits.

Applying Patches

Apply patches using git cherry-pick

To apply individual patches from an upstream kernel tree to your current Ubuntu kernel tree use the following command:

Where, SHAID is the commit ID of the patch you want to apply.

Set up chroot build environment

Get the automated chroot build scripts

• buildscripts: Scripts used to farm out the kernel builds to very fast remote
• chroot-setup: Scripts to setup jailed kernel compilation enviroments.
• daily-test-isos: Scripts and support files to produce daily, custom test isos.
• git-hooks: Optional hooks to help you commit patches
• maintscripts: Scripts used for general / stable kernel maintenance
• mainline-build: Scripts to produce .debs for mainline kernels
• misc: Everything else.

Download them using the following command.

git clone git://kernel.ubuntu.com/ubuntu/kteam-tools.git kteam-tools

Create the chroot environment

To automatically create the chroot environment use:

sudo mkdir -p /usr3/chroots # prep environment sudo chroot-setup/make_chroot precise amd64 http://archive.ubuntu.com/ubuntu

• arch stands for different arch supported by the CPU, for example i386 on AMD64 or LPIA on i386 etc.
• suite stands for release name such as hardy, gutsy, intrepid etc.
• mirror stands for the http location to download environment from, http://host[:port]/dir/

Note: You don't need to specify a mirror when using the LPIA arch

Packages required on a build system

• ccache
• devscripts
• xmlto
• docbook-utils
• gs
• transfig
• sharutils

Install build system package requisites

Certain packages are required to be installed on the build system. You can install these packages using the following command:

sudo apt-get install git-core debhelper build-essential fakeroot kernel-wedge makedumpfile

Optionally you may also install the following packages that might help debuild to function flawlessly.

sudo apt-get install ccache devscripts xmlto docbook-utils gs transfig sharutils libdw-dev libdw1 libelf-dev

Building the kernel packages

chroot into the build environment

Depending on what may be installed on your system you may use "dchroot" or "schroot" to chroot into the build environment.

You should chroot into a 64bit build environment to build 64bit kernel package, 32bit build environemt to build 32bit kernel package.

Setup the build tree

This step generates the debian control files required to build the kernel. The clean target is a bit of a misnomer here since we moved the generated files (control.stub, control) out of version control. The clean target actually creates these files. It is a known drawback, and unavoidable.

fakeroot debian/rules clean

Modify debian/changelog

Modify the debian/changelog file to reflect something unique about this build, for example, you may use a launchpad bug number that you might be building this kernel for.

Modify the the first line, for example:

linux (2.6.27-12.28) UNRELEASED; urgency=low

linux (2.6.27-12.28~lpNNNNNNUSERNAME1) UNRELEASED; urgency=low

Build the kernel package

fakeroot debian/rules binary-generic

fakeroot debian/rules binary-arch

Build the kernel header, source, doc packages

The following will build the header, source, doc packages.

fakeroot debian/rules binary-indep

Kernel/Dev/QuickBuildLocal (последним исправлял пользователь 193 2010-07-20 10:29:33)

The material on this wiki is available under a free license, see Copyright / License for details.

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Ubuntu Wiki

The majority of users that are interested in building their own kernel are doing so because they have installed Ubuntu on their system and they wish to make a small change to the kernel for that system. In many cases the user just wants to make a kernel configuration change.

The purpose of this page is to give that user a minimum amount of information for them to meet the goal of making a simple change to the kernel, building it and installing their kernel. It is not intended to be the definitive guide to doing Ubuntu kernel development.

Build Environment

sudo apt-get build-dep linux linux-image-$(uname -r)

sudo apt-get install libncurses-dev gawk flex bison openssl libssl-dev dkms libelf-dev libudev-dev libpci-dev libiberty-dev autoconf llvm

deb-src http://archive.ubuntu.com/ubuntu disco main deb-src http://archive.ubuntu.com/ubuntu disco-updates main

Obtaining the source for an Ubuntu release

There are a number of different ways of getting the kernel sources. The two main ways will be documented here.

If you have installed a version of Ubuntu and you want to make changes to the kernel that is installed on your system, use the apt-get method (described below) to obtain the sources.

However, if you wish to get the most up to date sources for the Ubuntu release you are running and make changes to that, use the git method (described below) to obtain the sources.

apt-get

apt-get source linux-image-unsigned-$(uname -r)

git

git clone git://kernel.ubuntu.com/ubuntu/ubuntu-.git

git clone git://kernel.ubuntu.com/ubuntu/ubuntu-disco.git

Modifying the configuration

chmod a+x debian/rules chmod a+x debian/scripts/* chmod a+x debian/scripts/misc/* LANG=C fakeroot debian/rules clean LANG=C fakeroot debian/rules editconfigs # you need to go through each (Y, Exit, Y, Exit..) or get a complaint about config later

This takes the current configuration for each architecture/flavour supported and calls menuconfig to edit its config file. The chmod is needed because the way the source package is created, it loses the executable bits on the scripts.

In order to make your kernel "newer" than the stock Ubuntu kernel from which you are based you should add a local version modifier. Add something like "+test1" to the end of the first version number in the debian.master/changelog file, before building. This will help identify your kernel when running as it also appears in uname -a. Note that when a new Ubuntu kernel is released that will be newer than your kernel (which needs regenerating), so care is needed when upgrading. NOTE: do not attempt to use CONFIG_LOCALVERSION as this _will_ break the build.

Building the kernel

LANG=C fakeroot debian/rules clean # quicker build: LANG=C fakeroot debian/rules binary-headers binary-generic binary-perarch # if you need linux-tools or lowlatency kernel, run instead: LANG=C fakeroot debian/rules binary

cd .. ls *.deb linux-headers-4.8.0-17_4.8.0-17.19_all.deb linux-headers-4.8.0-17-generic_4.8.0-17.19_amd64.deb linux-image-4.8.0-17-generic_4.8.0-17.19_amd64.deb

on later releases you will also find a linux-extra- package which you should also install if present.

Testing the new kernel

sudo dpkg -i linux*4.8.0-17.19*.deb sudo reboot

Debug Symbols

sudo apt-get install pkg-config-dbgsym LANG=C fakeroot debian/rules clean LANG=C fakeroot debian/rules binary-headers binary-generic binary-perarch skipdbg=false

See also

Kernel/BuildYourOwnKernel (последним исправлял пользователь b-stolk 2022-09-08 00:38:14)

The material on this wiki is available under a free license, see Copyright / License for details.

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How to install full kernel source on Debian or Ubuntu

Question: I need to download and install a full kernel source tree to compile a custom kernel for my Debian or Ubuntu system. What is a proper way to download full kernel source on Debian or Ubuntu?

Before installing full kernel source on your Linux system, ask yourself whether you really need the full kernel source. If you are trying to compile a kernel module or a custom driver for your kernel, you do not need the full kernel source. You only need to install matching kernel header files, and that's it.

You need the full kernel source tree only if you want to build a custom kernel after modifying the kernel code in any way and/or tweaking default kernel options.

Here is how to download and install full kernel source tree from Debian or Ubuntu repositories. While you can download the official kernel source code from https://www.kernel.org/pub/linux/kernel/, using distro's repositories allows you to download a kernel source with the maintainer's patches applied to it.

Install Full Kernel Source on Debian

Before downloading kernel source, install dpkg-dev , which contains a suite of development tools needed to build Debian source packages. Among other things, dpkg-dev contains dpgk-source tool which can extract a Debian source package and automatically apply patches.

$ sudo apt-get install dpkg-dev

Next, run the following command to download full kernel source.

$ apt-get source linux-image-$(uname -r)

Along with the full kernel source ( linux_X.X.XX.orig.tar.xz ), any available kernel patches ( linux_X.X.X+XXX.debian.tar.xz ) and source control file ( linux_XXXX.dsc ) will also be downloaded and stored in the current directory. The .dsc file instructs how the patches are applied to the kernel sources.

Upon the completion of download, the above command will automatically invoke dpkg-source tool, which will unpack the downloaded kernel source in the current directory, and apply downloaded patches according to .dsc file.

The final full kernel source tree will be available in the current directory as linux-X.X.XX .

Install Full Kernel Source on Ubuntu

If you want to install full kernel source, the Debian way described above should work on Ubuntu as well.

There is another way to download full kernel source on Ubuntu. You can actually check out the kernel source tree maintained by Canonical for different Ubuntu releases.

$ sudo apt-get install git $ git clone git://kernel.ubuntu.com/ubuntu/ubuntu-$(lsb_release --codename | cut -f2).git

For example, if you are using Ubuntu 14.04, the above command will check out code from " ubuntu-trusty " Git repository.

Once you check out the Git repository, use the following command to install necessary development packages to meet the build dependencies for the kernel source tree.

$ sudo apt-get build-dep linux-image-$(uname -r)

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