Technically I should still have a floppy and its backup, but the old laptop I used to make it is dead. It's kind of difficult to find floppy drives these days, and the whole thing is so old that the floppies might be no more readable.

The dlopen trick is something I'll remember if I need that sort of stuff, but I've grown wary of FFIs. With libraries, there's often #define constants or macros that make FFIs a bit awkward. I prefer to use static linking if the lib is not too big, or dynamic loading but still with light bindings if not. If you know a bit the internals of Lua, I use a very similar method to extend Forth's "vocabulary", and the loading (and manual linkink with dlsym) is done only when the extension is invoked and initializes itself.