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GCC 10 is officially released. The personal build for Windows (MinGW-w64) that can be downloaded from https://winlibs.com requires no installation, just extract to a folder.
Building GCC on Windows from source code is very difficult and cannot be recommended to beginners. Moreover, GCC 10 has not yet been officially released and you may need to wait a few more weeks to get it.
If you want an up-to-date GCC in Windows (currently version 9.3), I recommend downloading and installing the MSYS2 package. Once you install it, launch it using the "MinGW64" icon and install the correct compiler in the terminal. For details, see this question: How to install MinGW-w64 and MSYS2?
Once you have done this, you can forget about MSYS2 and simply use the directory with the binaries in your PATH.
The maintainers of MSYS2 are very keen in supporting bleeding edge software, so once GCC 10 is released, you will be able to update to it (using the command pacman -Syu)
very soon.
I've been looking for the 64-bit MinGW Windows installer for a bit now and can't find it, people on forums just link back to the 32-bit installer saying "It works on 64-bit Windows". I have no clue how I found it before but I got it on my laptop about 2 months ago but can't find it now when I want to get it for my desktop. I'm currently running the newest version from the github but it doesn't come with libraries like GMP and every attempt to find / create it separately doesn't work
