> Thanks for explaining this.
> 
> Are there other specific values PKGSRC_LOCKTYPE takes besides 'sleep'?
> Is there any documention on how it works in detail (I checked to pkgsrc
> guide and it doesn't seem to be described)?
> 
> 
>       Ask a question on any topic and get answers from real people. Go 
> to Yahoo! Answers and share what you know at http://ca.answers.yahoo.com

We are not real :)

Anyways, it has some documentation in pkgsrc/mk/defaults/mk.conf and 
pkgsrc/mk/internal/locking.mk.

Also related, someone had provide make files for supporting multiple jobs. 
This was maybe 18 months ago. I tried looking for it, but can't find it 
now.

  Jeremy C. Reed