@Stan` thanks for the detailed build instructions. I was able to build it on Ubuntu 20.04 (AMD Ryzen 5 4600 + NVIDIA 1650Ti setup). However, on starting the game it is showing me
```WARNING: You are using 'llvmpipe (LLVM 10.0.0, 128 bits)' graphics driver, expect very poor performance!
WARNING: If possible install a proper graphics driver for your hardware.```
The gameplay is like 6 FPS against AI on a 2 player medium map. Any suggestions on how to fix it?