Re: [Mingw-cross-env-list] update: Qt 4.7.0 RC1

[Mark Brand]

> > > FreeBSD and OSX seem to have a problem with MAKEFLAGS being set. Tens
> > > or hundreds of g++ processes are created and they eventually end up
> > > with strange errors.
> > I wish I understood why MAKEFLAGS="-j '$(JOBS)'" caused  problems on those
> > platforms. Do you know?
> No idea really. I'd be guessing that it's an obscure detail in the way
> that 'qmake' calls 'fork'. The initial errors on OSX were along the
> lines of:
>
> make[2]: g++: Resource temporarily unavailable
> /usr/libexec/gcc/i686-apple-darwin10/4.0.1/as: can't fork a new
> process to execute

My guess is that make is getting plain "-j" without a value. This causes 
parallelism without limit.


> Searching on those returned a lot of 'old' results. Previous versions
> of OSX had a fairly low number of maximum processes per user. I
> started fiddling with this, but that's when I noticed that hundreds of
> cc1plus processes were being created....
>
> I'll leave that in for the train of thought.
>
> I just tried something that is working on OSX, I suspect FreeBSD will
> be the same (I'm running it in a vm and it takes 145 mins to run).
>
> -        MAKEFLAGS="-j '$(JOBS)'" \
> +        MAKEFLAGS="-j $(JOBS)" \
>
> It looks like the ' surrounding a number is the problem.

I'd like to hear what Volker's thinks about this. Is it OK to remove the 
single quotes?

Mark