Cycles Building CUDA on Ubuntu 19.10 - No supported gcc/g++ host compiler found

Building Blender
1

I’m trying to build Blender with Cycles CUDA binaries but get the following error. My suspicion is that CUDA does not like the GCC version that ships with Ubuntu 19.10 (9.2.1). I tried to mitigate that by setting CUDA_HOST_COMPILER to /usr/bin/gcc-8 in cmake but that throws the same error. I think that is because CUDA wants 8.2.0 and I have 8.3.0 installed?

How can I set clang as a compiler?

[ 11%] Generating filter_sm_30.cubin
ERROR: No supported gcc/g++ host compiler found, but clang-8 is available.
Use ‘nvcc -ccbin clang-8’ to use that instead.
make[2]: *** [intern/cycles/kernel/CMakeFiles/cycles_kernel_cuda.dir/build.make:174: intern/cycles/kernel/filter_sm_30.cubin] Error 1
make[1]: *** [CMakeFiles/Makefile2:1416: intern/cycles/kernel/CMakeFiles/cycles_kernel_cuda.dir/all] Error 2
make: *** [Makefile:163: all] Error 2

2

“Fixed” it by manually editing the generated makefiles but that is something I would have to re-do every time I re-configure cmake :frowning: