Can the port command take advantage of multiple cores?

[Rainer Müller]

Yves de Champlain wrote:
> However, macports will not use it unless the Portfile says it'S OK to do 
> so with each specific port.  Now, very few (almost none) Portfiles have 
> this flag defined.  It's just too bad because most ports will build fine 
> with -j > 1 (I have tried over 150 ports with -j 8 and 5 have failed 
> because of that, mostly in the destroot phase).

Why is this opt-in and not opt-out? We could add a flag to ports that
they should be built with -j1 instead of what was specified in 
macports.conf. Is there a reason or some problem I don't know of?

Rainer