parallel builds revisited

Benjamin Lutz mail at
Thu Apr 12 20:29:12 UTC 2007

On Thursday 12 April 2007 22:20, Pav Lucistnik wrote:
> Benjamin Lutz píše v čt 12. 04. 2007 v 21:07 +0200:
> > On Thursday 12 April 2007 11:06, Garrett Cooper wrote:
> > > I dunno how you want to approach this, but gmake does recommend 2
> > > jobs be run in parallel for HTT enabled chips, and 3 or 4 jobs
> > > for a dual core machines.
> > > -Garrett
> >
> > So far the approach is one job per CPU. I'll do some benchmarks
> > lateron to determine wether it really helps to run more jobs. For
> > the KDE ports,
> Sadly, Qt blows up with -j2, so here comes KDE hopes...

Must be a result of their qmake generated makefiles. Fortunately, moth 
software using autotools (kde*, and also xorg7) seems to build just 
fine with -j.

A bigger blow than Qt is that OOo doesn't work with -j though :( That's 
probably the port that would need it the most... (the failure seems to 
happen very late in the build process though, which gives me hope that 
it's something reasonably easy to fix. If only the development cycles 
(code, build, test) weren't so extremely long...)

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