SUMMARY The clang free compiler is available for windows as prebuilt-binaries in: http://releases.llvm.org/download.html And it uses much less disk space than any (free to test) Visual Studio. Craft can only use (from the setup): Welcome to the Craft setup wizard! Select compiler [0] Mingw-w64, [1] Microsoft Visual Studio 2017, [2] Microsoft Visual Studio 2019 (Experimental) (Default is Microsoft Visual Studio 2017):