Debug build is too large to run on Windows

[bjoelle]

This isn't a critical issue for users but I've just spent two days troubleshooting this so I want to save it for future reference
Apparently Windows has a size limit on executables that it will run (somewhere around 3.5G) and the debug build is currently above so it won't start, with a very cryptic error message
Release build works fine on the same machine & setup (Windows 10 64bits Home edition, MinGW compiler)

I think this could be solved by building some of it (e.g. the libs folder) as a shared library instead but I don't know enough cmake to do this properly