There's no PPC support yet. (although gccgo may be able to output PPC
code at some point.)
If you want it, patches are welcome :)
AGL
There is already a PowerPC C compiler and linker, qc and ql, for plan9
so a port should be easier to do. The arm port was much quicker
because 5c/5l already existed. AFAIK nobody is working on it yet.
Kai
We have no immediate plans for PPC support in 6g/8g.
gccgo might support PPC today, but I haven't tried it.
Ian