[yocto] How to clean

[Stewart, David C]

>From: yocto-bounces at yoctoproject.org [mailto:yocto-
>bounces at yoctoproject.org] On Behalf Of Dallas Clement
>Sent: Tuesday, June 26, 2012 12:21 PM
>
>I'd like to clean all of my build output so that I can rebuild with a
>different toolchain.  What is the best way to clean without having to
>redownload all of my source packages again?
>
>I can see that something like this
>
>$ bitbake -c cleanall linux-yocto
>
>can clean the kernel or an individual package.  I want to clean everything.

I just delete the tmp directory and that seems to get the result I want - remove all the binaries but doesn't delete the sources.