Thanks for Mingw-w64, it's perfect!
I had issue with opening input file with the latest mingw-w64 v. 5.1.0. threads-posix sjlj. It gave me ... "Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: #0 ffffffffffffffff " So, I went back to v.4.9.2 which works fine.
Installer does not function correctly, unable to download. Manual installation is fine though.....
Misguiding name. It's either for 32 OR 64 bit Windows. Either, not both. No multilib. The only quirk putting it apart from hundreds of other releases of MinGW is that what you're downloading here is a fancy installer app. Instead of picking the package variant to download from a WWW page, you're doing it in the installer, which then downloads and unpacks it.