Comment # 2 on bug 991375 from Bruno Pesavento

(In reply to Stefan Dirsch from comment #1)
> @1: I see these libs installed in /usr/lib64
> # rpm -qplv nvidia-computeG04-367.35-25.1.x86_64.rpm |grep opencl
> lrwxrwxrwx    1 root    root                       26 Jul 26 13:56
> /usr/lib64/libnvidia-opencl.so.1 -> libnvidia-opencl.so.367.35
> -rwxr-xr-x    1 root    root                  8481000 Jul 26 13:56
> /usr/lib64/libnvidia-opencl.so.367.35
> 
> Not sure why you expect them in /usr/lib64/nvidia ...
> 
> @2: Not sure what's wrong on your system with the current 50-nvidia.conf,
> it's based on the 50-nvidia.conf in bnc#879767. I'm afraid you need to debug
> yourself on your system, what's the issue here. I cannot reproduce.

Thanks Stefan for looking into this.

@1: this is an "Optimus" notebook (Intel+Nvidia) with "bumblebee" installed, so
when the nvidia chip is engaged (e.g. with "optirun darkroom" or "optirun
clinfo") libnvidia* are searched in /usr/lib64/nvidia/.

@2: apparently the problem is a wrong packaging of the "bumblebee project"
nvidia-compute* packages.
Looking at nvidia-computeG04-367.35-25.1.x86_64.rpm (the "regular" package you
are using) I find indeed the needed 50-nvidia.conf and the two files
/libnvidia-opencl.so.1 -> libnvidia-opencl.so.367.35.
Unfortunately, being a "regular" installer, libraries go to /usr/lib64/, not
what is expected on a "bumblebee" install.
Looking at the nvidia-compute-<rev>.rpm packages from
/repositories/home:/Bumblebee-Project:/nVidia:/
I can confirm that both 50-nvidia.conf and the /libnvidia-opencl.so.1 -> link
are missing.
So, on a current "bumblebee" install OpenCL is broken, unless my workarounds
are applied.

If there is a good reason for the current "bumblebee" packaging, at least we
can refer to this bugreport when somebody occasionally complains that "OpenCL
doesn't work" over the Forums.