Parallel building of nss with gyp+ninja (Re: Tracing where build time is spent)

Luboš Luňák l.lunak at
Mon Mar 16 11:17:58 UTC 2020

On Monday 17 of February 2020, Luboš Luňák wrote:
> On Monday 17 of February 2020, Jan-Marek Glogowski wrote:
> > From
> >
> >
> > "Ideally, also install gyp and ninja and put them on your path. This is
> > recommended, as the build is faster and more reliable."
> >
> > I had the impression, that just the gyp and ninja build supports
> > parallel build currently.
>  I've tried it, and yes, it builds so much faster. On Linux it's easy, on
> Windows it seems to require something called MozillaBuild, which is an .exe
> installer of all kinds of Unix tools. I've eventually managed to get nss to
> build with gyp+ninja even on Windows with this, but I'll need to look more
> into it to get it to build with gbuild. Still, I think this is the way to
> go.

 FWIW, this is now in gerrit as 
and the follow-up patches. It currently doesn't build in Jenkins, as it is 
still pending on buildbots getting updated to the latest LODE. 

 Luboš Luňák
 l.lunak at

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