Yes, this guide is currently broken for v0.8.x. I haven't spent time on trying to fix the code to make it work because people had some instability issues with the MinGW build of v0.5.0, and @bitcube had a more stable build using the Microsoft Visual Studio compiler.

He has also recently made changes to get v0.8.5b to compile using Visual Studio. You can find that guide here. Or, if you don't want to compile it yourself and just want to use the executable, check out this guide instead.