Downloading the files is only half the battle. To use the compiler from your standard Windows Command Prompt or PowerShell, you must add it to your system’s Environment Variables.
The most efficient way to download and manage MinGW-w64 on Windows 10 is through MSYS2. This software distribution provides a modern package manager (pacman) that handles updates and dependencies automatically.
The terminal will ask which packages you want to include. For a complete setup, simply press Enter to select "all." When prompted to proceed with the installation, type "Y" and hit Enter. MSYS2 will now download the compiler, debugger, and necessary libraries.
First, visit the official MSYS2 website and download the installer executable. Once the download finishes, run the installer and follow the on-screen prompts. It is highly recommended to keep the default installation folder, usually C:\msys64, to avoid path issues with certain development tools later on.
Open the Windows Start menu and type "Environment Variables," then select "Edit the system environment variables." In the window that appears, click the "Environment Variables" button at the bottom. Under the "System variables" section, find the variable named "Path," select it, and click "Edit."
After the installation completes, ensure the "Run MSYS2 now" box is checked and click Finish. A terminal window will open. To install the MinGW-w64 toolchain, type the following command into the terminal and press Enter: pacman -S --needed base-devel mingw-w64-x86_64-toolchain
Click "New" and paste the path to the bin folder of your MinGW-w64 installation. If you used the default MSYS2 settings, the path will be: C:\msys64\mingw64\bin. Click OK on all open windows to save your changes.