Support for g++ 9.3 on Ubuntu 20.04

Any attempt to build something on top of Cuda on an Ubuntu 20.04 machine will fail with:

In file included from /usr/include/cuda_runtime.h:83,
                 from <command-line>:
/usr/include/crt/host_config.h:138:2: error: #error -- unsupported GNU version! gcc versions later than 8 are not supported!
  138 | #error -- unsupported GNU version! gcc versions later than 8 are not supported!
      |  ^~~~~
make[2]: *** [core/src/CMakeFiles/kokkoscore.dir/build.make:83: core/src/CMakeFiles/kokkoscore.dir/impl/Kokkos_CPUDiscovery.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:1015: core/src/CMakeFiles/kokkoscore.dir/all] Error 2
make: *** [Makefile:161: all] Error 2

Is Ubuntu 20.04 supposed to be supported, according to:
https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#system-requirements

Thanks