/usr/include/crt/host_config.h:119:2: error: #error -- unsupported GNU version (and fix)

[golightlyb]

I was getting this error using this repo in the make step:

/usr/include/crt/host_config.h:119:2: error: #error -- unsupported GNU version! gcc versions later than 7 are not supported!

This is an issue specific to CUDA, not to this repo. wiki.debian.org/NvidiaGraphicsDrivers#CUDA suggests to compile you need to add e.g. -ccbin clang-3.8 to the nvcc command line.

But I had to dig around to find how this applies to cmake.

On my system (Debian 10) I had to do e.g.

export CUDAHOSTCXX=clang-3.5;
./configure

(ls /usr/bin/clang* and ls /usr/bin/gcc* for possible values)

Hope that helps someone else!