I just want to install the newest version of clang http://packages.ubuntu.com/raring/clang-3.2
Does this mean I have to update my kernel to raring?
Clang 3.2.1 for 13.04(Raring) is available from the universe repository and can be installed normally through Synaptic or apt.
For 12.04, You can add the PPA to your repository through Synaptic using the following line(with instructions provided in the link below):
Or, from the command line(Ctrl+Alt+t):
To install the PPA on 12.10, run the following commands from the terminal(Ctrl+Alt+t):
In Synaptic, add the following line:
deb http://ppa.launchpad.net/georgekola/clang/ubuntu quantal main
Note for the 12.10 packages: The deb files are named 3.2-1~exp5ubuntu1 from February 2013, while the PPA is 3.2-1~exp1ubuntu3 from December 2012. Personally, I am using clang 3.2.1 on 12.04 and cannot currently give a recommendation over which package to use on 12.10.