Ok. I see. I still have the problem with CPU+GPU rendering.
I have done an experiment whose result seems to indicate that the CPU+GPU rendering problem I have is not related to CUDA compiler.
I have copied buildbot build cuda kernels (entire lib folder) from “/2.83/scripts/addons/cycles/” to the same path in my build.
I still have the problem running my build with CUDA kernels from buildbot builds (Runing builbot build works correctly).