The build tool changed from MINGW to MINGW64, a 64-bit fork of MINGW. Do not download from osdn.net. The site's security certificate has expired and has been hijacked by some company no longer ...

Now if your system cannot handle ‘.tar.gz’ files (common on Unix, but not on Windows) you can download 7zip, which is a compression utility that handles this format (and many others like .zip and .rar ...