I don't know, I've never used MinGW for any of my projects. I've only built 3DWorld with Visual Studio on Windows and gcc on linux. Supposedly if MinGW is a gcc-like compiler for Windows, you can start with the makefile. Have you tried anything yet? If you have a specific problem, maybe I can help you with that. But at this point it's not a supported compiler.
I don't know, I've never used MinGW for any of my projects. I've only built 3DWorld with Visual Studio on Windows and gcc on linux. Supposedly if MinGW is a gcc-like compiler for Windows, you can start with the makefile. Have you tried anything yet? If you have a specific problem, maybe I can help you with that. But at this point it's not a supported compiler.