QEMU4V

h1. Automate a checkpatch run on commit

h2. Copyright

The material has been taken from "here":http://blog.vmsplice.net/2011/03/how-to-automatically-run-checkpatchpl.html (author is Stefan Hajnoczi).

h2. How to automatically run checkpatch.pl when developing QEMU

The *checkpatch.pl* script was recently added to *qemu.git* as a way to scan patches for coding standard violations. You can automatically run *checkpatch.pl* when committing changes to git and abort if there are violations:

<pre><code class="shell">

$ cd qemu

$ cat >.git/hooks/pre-commit

#!/bin/bash

exec git diff --cached | scripts/checkpatch.pl --no-signoff -q -

^D

$ chmod 755 .git/hooks/pre-commit

</code></pre>

Any commit that violates the coding standard as checked by *checkpatch.pl* will be aborted. I am running with this git hook now and will post any tweaks I make to it.

_Update_ : If you encounter a false positive because *checkpatch.pl* is complaining about code you didn't touch, use _git commit --no-verify_ to override the pre-commit hook. Use this trick sparingly :-).