You are quite adventurous

I have no prior knowledge of Archlinux so bear with me.
I tried an install on WSL2 and I get this error (probably due to gcc being more recent than on mint)
Code:
[ 26%] Building CXX object OVP/OGLClient/CMakeFiles/OGLClient.dir/ztreemgr.cpp.o
In file included from /home/gondos/orbiter2016-git/src/TheGondos-orbiter/OVP/OGLClient/ztreemgr.cpp:6:
/home/gondos/orbiter2016-git/src/TheGondos-orbiter/OVP/OGLClient/ztreemgr.h:49:9: error: ‘uint8_t’ does not name a type
49 | uint8_t magic[4]; // file ID and version
| ^~~~~~~
/home/gondos/orbiter2016-git/src/TheGondos-orbiter/OVP/OGLClient/ztreemgr.h:21:1: note: ‘uint8_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
20 | #include <iostream>
+++ |+#include <cstdint>
21 |
It does not look like the error mentionned in your link about Orbitersdk.h not being found though... Maybe it is because WSL2 only allocates 1 CPU so it's compiling with make -j1.
I'll keep you posted if I can have a working build.
Edit : WSL2 does expose 12 CPUs so it must be makepkg that does not take them into account. Where can I change that?
Edit2 : I pushed an update for compilation on gcc13, however makepkg seems to add a "-Werror=format-security" option which breaks NASSP.