make -j1 produces four C++ instances

[bob prohaska]

On Tue, Dec 03, 2019 at 04:06:08PM +0000, greg at unrelenting.technology wrote:
> December 3, 2019 6:55 PM, "bob prohaska" <fbsd at www.zefox.net> wrote:
> 
> > Has the -j feature for make been changed/removed? 
> > 
> > IIRC, one could in the past limit the number of jobs created
> > while compiling software by using 
> > make -jN 
> > on the command line. Now it seems that
> > make -j1 
> > spawns four instances of C++ while trying to compile www/chromium.
> 
> make -jN won't necessarily do anything when make spawns other build systems
> which do their own parallelism.
> (*some* systems can integrate with GNU make, see e.g.
> https://github.com/ninja-build/ninja/issues/1139 )
> 
Which leads to:
https://github.com/ninja-build/ninja/issues/1441

> Chromium is mostly built using their own GN system,
> the backend of which actually is ninja btw
> 

Implying the behavior is controlled by ninja, not make. 

Is there some other way to restrain parallelism in
compiling www/chromium? 

Thanks for replying!

bob prohaska