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List:       kde-devel
Subject:    Re: how to speed up compilation
From:       Stephan Kulow <coolo () kde ! org>
Date:       1999-07-07 13:09:05
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Werner Trobin wrote:
> 
> Steffen Hansen wrote:
> >
> > On Tue, 6 Jul 1999, Jan Varga wrote:
> >
> > >
> > > Hi,
> > >
> > > How can I speed up compilation of KDE source on Dual CPU system ?
> > > I try run make with parameter "-j2" but it is not working.
> > > It is only working when I pass only "-j" parameter, but it is sometimes
> > > too much.
> >
> > I do
> >
> > setenv MAKE 'make -j 2'
> > make
> >
> > That works for me.
> >
> 
> At the moment I'm thinking about buying a Dual Celeron system.
> Therefore I'd like to ask you if someone can provide some simple
> "benchmark-results" (e.g. KOffice compile, 1 CPU vs. 2 CPUs).
> 
> Today I had a nasty idea. If I understood that SMP thing correctly
> the --enable-final option does not allow to use the 2nd CPU (because
> of dependencies), or am I wrong here?
> 
> If this thought was correct it would be cool if we (yes, Coolo would
> have to do it, sorry Coolo) would create a new option (--enable-2).
> Instead of creating one huge file (--enable-final) this should create
> two files. Each of these files would contain half of the sources.
> If you then build it with make MAKE="make -j 2" -j 2 this sould be
> somewhat faster because you can use the 2nd CPU, too.
> Of course there are disadvantages (e.g. the resulting lib is bigger,
> Coolo has to implement, test, fix it,...), but I think it would be
> worth the troubles...
> 
Well, I would do it. You just need to send me a testbed system.

But somehow I'm afraid you have no idea what you just said - I mean, 
what it would mean for the Makefiles.

Greetings, Stephan

-- 
As long as Linux remains a religion of freeware fanatics,
Microsoft have nothing to worry about.  
                       By Michael Surkan, PC Week Online

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