Comment # 26 on bug 921577 from Michel Normand

(In reply to Petr Gajdos from comment #25)
> So wouldn't be better to just hardcode numThreads to 1? That is
> 
> - int numThreads = QMIN(32,Config_getInt("DOT_NUM_THREADS"));
> + int numThreads = 1;
> 
> by the patch?

I don't think so.
The advantage of the doxygen_ppc64le_ignore_DOT_NUM_THREADS_to_0.patch (1)
is that it is sufficient as a bypass for the packages build in OBS (that have
config with DOT_NUM_THREADS=0)
But we continue to support DOT_NUM_THREADS when using the doxygen command 
manually for test purpose.

(1) https://bugzilla.suse.com/attachment.cgi?id=650515