Re: [30721] use_parallel_build / portfile-phase.7.xml
Mark Duling writes:
One question about "use_parallel_build". Do you think that keyword relates to a phase, or should it be considered a "global keyword"? I thought perhaps "global", or do you consider it specifically related to the build phase? I thought parallelism applied more generally to the port overall. But if that were true, I suppose the name would be "use_parallel_install" or some such, so if you could comment on that it might clarify it. If I had followed the recent thread I suppose I would know this, but I didn't.
I also have to say that I struggled to come up with an organizing principle for keywords, and I'm not entirely sure that separating them into "global" (those relating to the port as a whole and not primarily related to a phase) and "phase" (those relating to a particular phase) is the best way. Perhaps there is a better way, but I haven't hit upon it yet. So I just wanted to ask if you think given that distinction, if portfile-phase is the best place for use_parallel_build. And if you have an opinion on whether that distinction is adequate or not, I'd welcome your comments on that as well.
Okay, I looked at the thread and I see that "use_parallel_build" does indeed relate specifically to the build phase. I should have done that before sending the email. Sorry. I gotta stop trying to think in the morning without caffeine. :) Perhaps I was influenced by my recollections that some ports stop installing outside of the build phase until another port is finished installing. At least I think I've seen this. If that is so and a ports hangs at activate or another phase until another port completes, it seems like parallel building still wouldn't get parallel installs. Mark
On Nov 5, 2007, at 2:30 PM, markd@macports.org wrote:
Perhaps I was influenced by my recollections that some ports stop installing outside of the build phase until another port is finished installing. At least I think I've seen this.
you have.
If that is so and a ports hangs at activate or another phase until another port completes, it seems like parallel building still wouldn't get parallel installs.
This option is not really related to that behavior. It just allows a port to say that it can be built with make -j (which can speed up builds on multi-core or multi-cpu systems). -- Daniel J. Luke +========================================================+ | *---------------- dluke@geeklair.net ----------------* | | *-------------- http://www.geeklair.net -------------* | +========================================================+ | Opinions expressed are mine and do not necessarily | | reflect the opinions of my employer. | +========================================================+
"Daniel J. Luke" <dluke@geeklair.net> writes:
Perhaps I was influenced by my recollections that some ports stop installing outside of the build phase until another port is finished installing. At least I think I've seen this.
you have.
If that is so and a ports hangs at activate or another phase until another port completes, it seems like parallel building still wouldn't get parallel installs.
This option is not really related to that behavior.
It just allows a port to say that it can be built with make -j (which can speed up builds on multi-core or multi-cpu systems).
Ah I see, I changed the description slightly to make it mor clear. Thanks! Unfortunately, my editor wrapped a bunch of lines so the commit was messy. Mark
I've just added a way to automatically set the number of build jobs (if desired): If the number of build jobs is set to "0" (in the config file), the number of jobs is set to the number of cores. This works only on Mac OS X (and FreeBSD -- though untested). -Markus On 05.11.2007, at 20:32, Daniel J. Luke wrote:
On Nov 5, 2007, at 2:30 PM, markd@macports.org wrote:
Perhaps I was influenced by my recollections that some ports stop installing outside of the build phase until another port is finished installing. At least I think I've seen this.
you have.
If that is so and a ports hangs at activate or another phase until another port completes, it seems like parallel building still wouldn't get parallel installs.
This option is not really related to that behavior.
It just allows a port to say that it can be built with make -j (which can speed up builds on multi-core or multi-cpu systems). -- Daniel J. Luke +========================================================+ | *---------------- dluke@geeklair.net ----------------* | | *-------------- http://www.geeklair.net -------------* | +========================================================+ | Opinions expressed are mine and do not necessarily | | reflect the opinions of my employer. | +========================================================+
--- Markus W. Weissmann http://www.mweissmann.de/
participants (3)
-
Daniel J. Luke
-
markd＠macports.org
-
Weissmann Markus