On Sat, Jan 21, 2006 at 07:52:20AM +1100, Peter Jeremy wrote:5C > IMHO, the biggest problem (as des pointed out) is that there's nothing > to prevent two makes attempting to build the same port (this can > easily happen when both ports A and B depend on port C). One possible > solution would be to create another status file in the work directory > and hold a file lock (flock/lockf) on it whilst a make is in progress. > Any parallel attempt to make that port would block. > > If the above was implemented, an enhancement would then be to process > the port's dependency list in parallel, rather than serially. This > would allow a make that was blocked on one dependency to continue with > a different dependency.
There have been a couple of half-hearted attempts to implement this, but no complete ones (see an old portmgr PR for details + discussion). I'd welcome a complete version :) Kris
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