I get the following error message when trying to build PyTorch:
unsupported GNU version! gcc versions later than 8 are not supported!

According to this stackoverflow thread 1 I need to make sure that I use the max supported GCC version for the CUDA version I have installed.
nvidia-smi

gives me
NVIDIA-SMI 460.32.03    Driver Version: 460.32.03    CUDA Version: 11.2

and
gcc --version

gives me
gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0

and
nvcc -V

gives
Cuda compilation tools, release 11.2, V11.2.152

According to the thread linked above, CUDA 11 supports GCC <= 10.
What am I missing here?