Re: parallel make hangs

[John W. Eaton]

On 11/21/2017 10:06 PM, Daniel J Sebald wrote:

> Those happen sometimes.  Here the make process hangs on voronoi.eps 
> (regardless of parallel build or not), but I think that is a 
> long-standing bug with osmesa and nVidia drivers.

I'm surprised that you have any success mixing the nvidia libGL with 
OSMesa.  I don't think the layout of the GL context used the the nvidia 
library is compatible with the one used by Mesa.  As far as I know, the 
only way to make that work properly is to use the Mesa libGL and force 
software rendering.  What happens if you do that, by setting 
LD_PRELOAD=/path/to/your/mesa/libGL.so and LIBGL_ALWAYS_SOFTWARE=1 in 
the build environment?  Does it hang then?  Are both actually needed for 
building?  Since that is only doing off-screen rendering, then the 
LIBGL_ALWAYS_SOFTWARE might not be needed.

jwe