This avoids ~9000 warnings like: austin@gcc113:~$ grep 'warning: argument unused during compilation' without-patch.build.log | sort -u clang-6.0: warning: argument unused during compilation: '-I ../atl' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../d3dcompiler_43' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../d3dx11_43' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../d3dx9_36' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../../../include/msvcrt' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../../include/msvcrt' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../../../include' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../../include' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../include' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../msvcm80' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../msvcp90' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../msvcrt' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I /usr/include/dbus-1.0' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I /usr/include/freetype2' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I /usr/include/libpng12' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I /usr/include/libxml2' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I /usr/include/p11-kit-1' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I /usr/lib/aarch64-linux-gnu/dbus-1.0/include' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../wscript' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ./..' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../..' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I .' [-Wunused-command-line-argument] clang-6.0: warning: argument unused during compilation: '-I ../xinput1_3' [-Wunused-command-line-argument]