For building Windows, use the buildall.bat script in this directory.
It requires that the CMD.EXE be created using the DevStudio Tools link to create a CMD.EXE windo.
If multiple DevStudio versions are installed on the machine, you can run buildall.bat on separate windows that each were created by the desired DevStudio target.
If you prefer to build all versions (or several) at the same time, you should uncomment the specific version desired in buildall.bat to build them from a single window.