≡ Menu

How do I install FreeBSD kernel source code?

Q. I need to configure FreeBSD kernel but not able to find out source code in /usr/src/sys directory. How do I install FreeBSD source code?

A.Your kernel and all related source code is located at /usr/src/sys directory which is also accessible through the /sys path.

If there is not a /usr/src/sys directory on your system, then the kernel source has not been installed. The easiest way to do this is by running sysinstall as root, choosing Configure, then Distributions, then src, then base and sys
# sysinstall
sysinstall-1.jpg

Select Configure
sysinstall-2.jpg
Select Distributions
sysinstall-3.jpg
Select src
sysinstall-4.jpg
Then base and sys > Select ok
sysinstall-5.jpg

Further readings

Share this tutorial on:

Your support makes a big difference:
I have a small favor to ask. More people are reading the nixCraft. Many of you block advertising which is your right, and advertising revenues are not sufficient to cover my operating costs. So you can see why I need to ask for your help. The nixCraft, takes a lot of my time and hard work to produce. If you use nixCraft, who likes it, helps me with donations:
Become a Supporter →    Make a contribution via Paypal/Bitcoin →   

Don't Miss Any Linux and Unix Tips

Get nixCraft in your inbox. It's free:



{ 8 comments… add one }
  • SIFE September 17, 2009, 11:41 pm

    Salamo Alikom
    does any way to get it with cvs ?

  • Cristian Navalici October 6, 2009, 4:57 pm

    Thanks a lot for the information!
    It was helpful

  • Dask January 29, 2010, 5:56 pm

    tnks man!
    It really help me!

  • Ben February 11, 2010, 12:26 pm

    followed these steps, but got:

    Warning: Can’t find the ‘8.0-RELEASE-p2’ distribution on this FTP server.

    I chose many different servers. What now?

  • Ben February 11, 2010, 12:38 pm

    actually, need to:

    # sysinstall
    configure
    options

    then change the release name to 8.0-RELEASE and it works fine after that.

  • sateesh June 30, 2012, 6:04 pm

    how do I install sources using pkg_add

  • bsd newbie August 22, 2012, 6:11 pm

    Thanks. It’s very helpful. I have been benefiting from your website. Keep up the good work. :D

  • nixkid November 27, 2012, 7:51 pm

    Sysinstall is mostly dead. It won’t install the source distribution for you any more. But now you can solve this problem in the Howto forum: http://forums.freebsd.org/showthread.php?t=29172.

Leave a Comment

You can use these HTML tags and attributes: <strong> <em> <pre> <code> <a href="" title="">


   Tagged with: , , , ,