Open the MSYS2 terminal
Update the package database
Update all installed packages
Install the GCC toolchain package
Install any additional GCC-related packages you need
Verify GCC is installed
Add the MSYS2 `bin` directory to your system PATH if needed
Restart the terminal or IDE after updating PATH
Use `pacman -S mingw-w64-ucrt-x86_64-gcc` for UCRT64
Use `pacman -S mingw-w64-x86_64-gcc` for MINGW64
Use `pacman -S mingw-w64-clang-x86_64-gcc` only if using the matching environment
Use `gcc –version` to confirm installation
Use `g++ –version` to confirm C++ support
Use `pacman -Ss gcc` to search available GCC packages
Use `pacman -S mingw-w64-x86_64-toolchain` to install the full MinGW-w64 toolchain
Use `pacman -S mingw-w64-ucrt-x86_64-toolchain` to install the full UCRT64 toolchain