Non-x86, but developer tools available
Tilera’s Gx chips support the 2.6.36 release of Linux and are CentOS compatible…
If you want to read the complete article please follow this link and read the last comment.
Here is another link that you will get more detailed informations about the coding and where to fin a SDK
that you are able to set up your own code or entire system, but how you will be able to insert in the
MikroTik CCR it would be a hint, if it is able to do or not only MikroTik can answering you.
By the way perhaps you should also compile The Dude for let us all having a real The DUDE Server