version guards to avoid using stdc for WebAssembly

[aferust]

Dear Mike,

I have been struggling to compile an example code on https://theartofmachinery.com/2018/12/20/emscripten_d.html. I realized that bindbc-sdl uses some types from core.stdc. Those are not available when compiling for wasm. I could compile the example code with these modifications. You can merge and do some final touches if you want.

Thanks. Ferhat

[mdparker]

Thanks! However, I'd rather wait and see how Sebastiaan Koppe's port of DRuntime to WebAssembly turns out before making any changes like this. So I'll let this sit here for a bit.

[aferust]

Yes, I am waiting for his final work too. I will let my fork live until his work complete.

[ichordev]

From what I can see, Sebastiaan Koppe's project seems to have been silent for about a year. Are you still interested in these changes being merged? If so, I can incorporate them into the next update.

[aferust]

Please do it. Thanks.