[Haskell-cafe] Building regex-posix for windows

I'm having trouble building regex-posix for Windows under MinGW because MinGW does not include regex.h. As far as I know Haskell Platform uses MinGW and it includes regex-posix. I'd like to build regex-posix by myself, like Haskell Platform does. I would appreciate it if someone suggests some resources about building regex-posix and other packages for windows. I’m also looking for Haskell Platform developer’s blog or something similar, where I can read about porting Haskell on Windows. Thanks.