Ryan Schmidt wrote:
Ryan> As ports are tested, "use_parallel_build yes" is added to
the
Ryan> portfile. Then MacPorts will build those ports using -j$jobs
Ryan> (where $jobs is the number of CPU cores in your computer).
This
Ryan> was added for MacPorts 1.6.
Excellent, thanks. That makes it transparent even. ;-)
Well, that's what I thought happened. But now others are saying
there's an option in macports.conf that needs to be set. Can someone
please clarify? Is there an option, and if so, what does it need to be
set to?
There is a config parameter in macports.conf called "buildmakejobs",
that controls the default value for build.jobs (default config is 1)
However, this was considered dangerous so the Portfile opt-in setting
of "use_parallel_build" was added - with a default setting of no.
So in order to get MacPorts to use -j2 or more, you need to both
set your local preference and then also each Portfile to opt-in...
Opt-in was added in
http://trac.macports.org/projects/macports/changeset/30714
before that it assumed opt-out -(by using "build.jobs 1") instead.
--anders
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