Where can I find and install the mingw-w64 packages for centos-7?

Trying to get cross compiling working on centos7. (I have jenkins running in that environment.) There is a lot of out of date documentation on the web for mingw. Apparently there was an answer **here ** but is gone. The cross compilation steps are discussed **here **. I can do a **sudo yum groupinstall -y packagename**, but nothing I try works (MinGW-64 mingw-64 mingw64, MinGW64, or MinGW cross-compiler) as I have seen in various posts and forums. I also tried downloading the source but had no luck with that also as various pre-requsites are missing, and when I try and obtain them they don't exist or are the wrong version.