GLSMAC coredumps on NetBSD 10.1

[LuboGD]

The good news is that all the build dependencies seem to be available.

One important caveat is CMake doesn't pick up SDL2 automatically. I believe due to a bug upstream with NetBSD SDL2 package.
https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=59830

For some reason they have the SDL2 package-config (.pc) file named sdl2.pc (all lowercase), and the SDL2_image has it named SDL2_image.pc.

So after I got past that, GLSMAC built according to your instructions!

Compiled binary (release) coredumps. Seems to be at least vaguely similar to your issue #21 with huge maps, but not dependent on map size, and crashes no matter what. All my GPUs are pretty retro AMD. Here's the one on the desktop I used during this build:
VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity 2 [Radeon HD 7540D]

terminate called after throwing an instance of 'std::runtime_error'
what(): OpenGL error occured in render loop, aborting: 1281
[1] Abort trap (core dumped) ./GLSMAC

Please advise if any other logging info is required. Thanks for making GLSMAC, it shows great promise, and I look forward to updates!

P.S. GLSMAC compiles and runs ok on Adelie Linux, an Alpine derivative.