Comment by HolyBlackCat on CMake pkg-config on Windows 11 returns error: "required by 'virtual:world', not found"

Don't set environment variables manually (PATH, PKG_CONFIG_PATH, ...). Open MSYS2 MINGW64 terminal in the Start menu and they'll be set for you. Install CMake in MSYS2 (pacman -S mingw-w64-x86_64-cmake) and use it instead of the official one, at the very least it defaults to using MSYS2 compilers instead of MSVC.