I greatly appreciate greatly your recommendations. I got Ubuntu also installed on WSL. In addition, I could open it with lxde.
I (apparently) installed well, Ubuntu on WSL with the necessary dependencies to compile with make and gcc++, so I got StaMPS compiled in three systems: Ubuntu on WSL, lxde and CYGWIN:
However, and reviewing some similar step issues (concretely: downgrading ubuntu 20.04 to 18.04 to avoid the segmentation fault (core dumped), I realised that I should try downgrading to Ubuntu 18.04, as I got the same error in all three subsystems.
I am trying to downgrade, or uninstalling and install Ubuntu. The problem now is how to do this. Please, let me know if this can be a good option, and if you can provide me with some references to documentation related to the Ubuntu downgrading with the subsystems WSL, CYGWIN or lxde.
Thank you very much for your useful guidance and help.
Jose