- Add a distclean target - Add a help target - Add the -Wshadow option Signed-off-by: Martin Roth <martin@coreboot.org> Change-Id: Ie31d61bd0e28b1e228656dfa09b5ab1996868706 Reviewed-on: https://review.coreboot.org/c/coreboot/+/50848 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com>