Also there is many errors in stdio.d .\phobos-ldc\std\stdio.d(618): Error: undefined identifier '_fileno' .\phobos-ldc\std\stdio.d(619): Error: undefined identifier '_setmode' .\phobos-ldc\std\stdio.d(619): Error: undefined identifier _O_BINARY .\phobos-ldc\std\stdio.d(620): Error: undefined identifier '_setmode'