Problems building latest headless CUDA on linux: can't find acceptable g++ version

[ankitm]

I picked that from the third link I posted.

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

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

I’m guessing there is an entry for path to Cuda compiler in the CMakeCache.txt file in the build folder. If it points to gcc-9, change the path manually to 8.

If doesn’t work, try the second link (last post in that thread) or the fourth one which use symlink
ln -sf /usr/bin/gcc-8 /usr/local/cuda/bin/gcc