Where can I get help with build with emscripten?

I’m trying to build a webassembly binary of PhysX with the repo above.
I found some macros defined in header files to indicate target platform to be emscripten.
But there’s no Makefile for emscripten.
I succeeded to build linux binary with linux32 and linux64 build scripts included.
But I got lost while I’m writing my own emscripten build scripts based on them.

we do not support officially emscripten. But it should be possible to compile the SDK.

You can take a look at the cmake files over here: