Bootstrapping clang/wasm toolchain

[vadimkantorov]

Curious, has anyone tried/succeeded compiling clang/llvm/wasm/emscripten toolchain itself to make an in-browser C compiler able to produce and execute WASM modules directly in-browser?

I found some hobby attempts at writing C-to-wasm compilers from scratch, but if LLVM/Clang itself could be compiled to WASM, this could open way to many more other compilers-in-browser, even if using full Clang for example program C compilation is overkill.

Probably could be interesting for pedagogical purposes / teaching C and alleviating the server costs :)

[kripken]

Yes, see Emception by @jprendes . That's the best one I'm aware of.

[vadimkantorov]

Oh wow. Interesting that it's similar to my busytex in that it's also making a busybox-like executable

I would hope that bootstrapping llvm becomes part of emscripten proper in some future

Unfortunately, emception demo crashes the mobile Safari