If you need MSYS too, let me know in comments. dongsheng-daily looks like daily builds, even including experimental GCC 7. rubenvb has some older GCC and Clang versions. ray_linn has various builds that include Ada (and Objective C/C++?) support. There are alternative third-party builds in subfolders starting from one step further out here (32 bit) and similar subfolders of different Toolchains targetting * folders for 64-bit and other builds. I've already tested this with one of the 32-bit gcc-5.4.0 packages - g++ compiled a hello-world with no problems. Other than that shortcuts issue, all you do is unpack the package to a suitable folder, make sure that the mingw32\bin or mingw64\bin folder is on the path somehow, and you should be done. Probably they're just Windows command prompt shortcuts with the path set up. I'm not sure what the shortcuts the installer offers to create are for - this is MinGW-w64, not MSYS or MSYS2, so there's no bash-based shell to provide shortcuts to. The binary packages themselves are in subfolders of this folder (Win32) and this folder (Win64). Sources for mingw-64 binary packages are easy enough to find, though. bug reports, but not found the source of the installer.
Incidentally, if anyone knows where to find the source code for the installer, I'd really appreciate a comment - I've hunted high and low, found e.g. That's just a pipe-separated text file - 5 fields for those 5 main options, plus one for the URL of the package to download.
To identify what the choices are, it uses a file repository.txt from this folder.
I'm guessing 32-bit with posix and dwarf is the default. Based purely on download stats, posix threads are used more than twice as much as win32, seh seems much more popular for 64-bit, dwarf for 32-bit, sjlj seems pretty unloved. I don't know about you, but I've no idea what to choose for threads and exceptions. The first 5 options are used to choose a single download package. Based on some screenshots for a bug report, the online installer asks the following questions. Although the following isn't fully tested yet, an offline installer seems unnecessary.
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