The reason I want to build hal is building networkmanager (from rho's ports), which requires hal as dependency.

2012/11/8 Predrag Ivanovic <predivan@open.telekom.rs>

On Thu, 08 Nov 2012 11:27:14 +0200
Stefan Stefanov wrote:

>Hello
>
>Trying to build hal from /opt - failed.
>Build cannot find videodev.h file in /usr/include/linux directory.
>
>There is videodev2.h in this directory, but symlinking it to videodev.h
>doesn't work, also.

Hal is dead :)
But, this patch might help (from Open Suse)

https://build.opensuse.org/package/view_file?file=hal-videodev.patch&package=hal&project=openSUSE%3ADropped&rev=2faf80489126a00cad48d5d33dfa5d1b

HTH
Pedja