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58 lines
3.6 KiB
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Linux FAQs with Answers--How to install full kernel source on Debian or Ubuntu
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> **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?
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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][1], and that's it.
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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.
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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/][2], using distro's repositories allows you to download a kernel source with the maintainer's patches applied to it.
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### Install Full Kernel Source on Debian ###
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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.
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$ sudo apt-get install dpkg-dev
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Next, run the following command to download full kernel source.
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$ apt-get source linux-image-$(uname -r)
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Along with the full kernel source (linux_X.X.XX.orig.tar.xz), any available kernel patches (linux_X.X.X+XXX.debian.tar.xz) and source control file (linux_XXXX.dsc) will also be downloaded and stored in the current directory. The .dsc file instructs how the patches are applied to the kernel sources.
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Upon the completion of download, the above command will automatically invoke dpkg-source tool, which will unpack the downloaded kernel source in the current directory, and apply downloaded patches according to .dsc file.
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The final full kernel source tree will be available in the current directory as "linux-X.X.XX".
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### Install Full Kernel Source on Ubuntu ###
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If you want to install full kernel source, the Debian way described above should work on Ubuntu as well.
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There is another way to download full kernel source on Ubuntu. You can actually check out the kernel source tree maintained by Canonical for different Ubuntu releases.
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$ sudo apt-get install git
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$ git clone git://kernel.ubuntu.com/ubuntu/ubuntu-$(lsb_release --codename | cut -f2).git
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For example, if you are using Ubuntu 14.04, the above command will check out code from "ubuntu-trusty" Git repository.
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Once you check out the Git repository, use the following command to install necessary development packages to meet the build dependencies for the kernel source tree.
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$ sudo apt-get build-dep linux-image-$(uname -r)
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--------------------------------------------------------------------------------
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via: http://ask.xmodulo.com/install-full-kernel-source-debian-ubuntu.html
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作者：[Dan Nanni][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[a]:http://ask.xmodulo.com/author/nanni
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[1]:http://ask.xmodulo.com/install-kernel-headers-linux.html
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[2]:https://www.kernel.org/pub/linux/kernel/ |