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I'm needing to custom compile a kernel to enable some very specific hardware features that are not on by default and have to be compiled in. I started following this guide but it seems to be slightly outdated for 12.04 onwards as some commands fail with missing source packages.

https://help.ubuntu.com/community/Kernel/Compile

What is the easiest way to rebuild the current kernel source so I can tweak the options I need?

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1 Answer 1

These steps are very general and apply to every package in Ubuntu/Debian.

  1. This will download the source package and applies all Ubuntu patches.

    apt-get source linux-image-3.... # select the exact package you want
    
  2. Install all build dependencies.

    sudo apt-get build-dep linux-image-3...
    
  3. Enter the directory of the source.

    cd linux-... # change accordingly
    
  4. Do the changes to the source you need.

  5. After finishing the edits, add a new version to the changelog (else it's going to complain the source doesn't match):

    dch --local mysuffix
    
  6. Build it with unsigned changes file and unsigned source package (for local testing):

    debuild -uc -us
    

    This will take a while!

  7. Find the packages one level below:

    ls -al ../*.deb
    
  8. Install them like any other package.

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