I looked over the code to guage how big this 32-bit problem is. It's going to be a lot of work. 32-bit is hardcoded everywhere. Compiler, linker, libc calls.

So, on one hand, there's massive cross-platform support. On the other hand, those platforms are all obsolete, or about to be. Even the mobile and embedded ones have all gone 64-bit.

Maybe backwards compatibility will be maintained for a few years. But it ruins the embed-red-in-C story already.