Building the mulle-objc-runtime with Emscripten

You need mulle-make 2.5 or better for mulle-objc-runtime 0.27 and upwards.

But then it is:

1mulle-sde -DCMAKE_PP="emcmake" \
2          -DMULLE_CRAFT_PLATFORMS=webassembly \
3          craft 

Then you hit a snag, because we emcc uses its own clang and we need mulle-clang. The way forward is to compile everything with mulle-clang from .m to IR and then with emcc to .wasm.

Presumably...