Later, better, and more stable versions of LAC have been published since this article came out back in Nov2019. Since Nov2021 it is no longer necessary to compile LAC because a precompiled "AppImage" version is now available that includes all prerequisites for 64-bit X86 hardware. It works in all of the leading desktop LINUX distros. You can always find the latest, greatest version of LAC here:
https://sourceforge.net/projects/linuxaircombat/files/
As you explore that link you'll find versions with source code that you can compile in addition to precompiled versions. You'll also find versions for the Raspberry Pi on the "Raspbian" operating system in addition to the more mainstream LINUX distros.
Take a look at this video clip to get a good idea of what it's like to fly in LAC's online arenas when nobody else is participating:
https://rumble.com/vwn6gl-linux-air-combat-what-to-expect-when-you-are-the-only-...