Reply To: Is there any easier way to compile OpenLB in Windows?
Yes, OpenLB is primarily developed on and targeted at Linux (although you can also use it on other Unix-like systems)
In general there is not that much platform-specific implementation. The main requirements are full C++17 support and the declaration of various preprocessor flags to select the parallelization modes and so on (this is why you get the any_platform error).
There are many people working on OpenLB under Windows using the WSL system. You can check out the corresponding tech report (although it may be out of date by now, in general you only need to enable WSL and install a Linux distribution of your choice under Windows. There is also a video guide linked).
I hope this helps.