Properly handle SDL2

[probonopd]

libSDL2 apparently needs many libraries that it does not declare as dependencies in a way that ldd understands.

Reference

• find the way to package DOS programs/games dosemu2/dosemu2#2133 (comment)

[probonopd]

So possible we should patch those into libSDL2-2.0.so.0 with patchelf --add-needed so that they get properly deployed?

[stsp]

I am still more than confident this
should be solved on an APK level.
Find sdl2 deps on ubuntu or by some
other means, and add them to the
apk metadata.
Don't go for binary patching or any
other weird things, that's what I think.

[probonopd]

Hi @stsp, what do you mean by "APK level"? As a cross-distro toolset, go-appimage doesn't even know what APK is.

[stsp]

The problemis that in alpine the
sdl2 deps are missing. This means
you can't get a working dosemu2
there at all, no matter the appimage.
Solve this first, get the working alpine
build, then just wrap it to appimage
entirely.