yowl
yowl
Thanks very much for the help, I have something working I think 
Going to close this now as #8055 exists. Thanks!
Looks like the build is finding your GnuWin32 installation before Visual Studio. For example you have ``` Run Build Command(s):nmake /nologo cmTC_6e999\fast && C:\Program Files (x86)\GnuWin32\bin -f CMakeFiles\cmTC_6e999.dir\build.make /nologo -L...
hmm, not sure. What version of cmake do you have?
One other thing. When you run `build wasm` from "x64 Native Tools Command Prompt for VS 2019", delete the bin and obj folders first in case it has cached some...
Corert + emsdk "latest" has a problem with exceptions, best stick to 1.40.1. Not this problem but FYI
cmake 3.18 is relatively new, I wonder if its worth trying the last 3.17? For reference I'm on 3.15.1
I see on 3.18.2 "Fix quoting of path to cmake in CMAKE_RC_COMPILE_OBJECT" I don't know if that is the same quoting problem as you have, but 3.18.2 is was out...
A good place to look first could be https://github.com/dotnet/corert/blob/325f31dce46e893506899c913c39be6c4b219750/src/ILCompiler.WebAssembly/src/CodeGen/ILToWebAssemblyImporter.cs#L4939-L4946 The NRE check is there.
Did step 4 at https://github.com/dotnet/corert/blob/master/Documentation/how-to-build-WebAssembly.md not work for you?