Building gcc12 parallel

Hi All,

Machine has 56 cores and 256G, so things should work fast.

Trying to build (big) some stuff in poudriere and now build is stuck on 
GCC-12.
Which it seems to do in serial mode, atleast I can only detect max 1 
compile-thread.
And that is of course going to take forever.

So what do I need to do to get Poudriere to call the gcc-12 build with 
something like -j 56 or so.

Thanx,
--WjW