dev-lang/gnat-gpl/gnat-gpl-2016.ebuild:GCC_FILESDIR=${PORTDIR}/sys-devel/gcc/files dev-lang/gnat-gpl/gnat-gpl-2017.ebuild:GCC_FILESDIR=${PORTDIR}/sys-devel/gcc/files Using PORTDIR is invalid since it relies on a particular layout of the repository, and on the presence of other packages. Please stop doing such horrible hacks, and please fix this ASAP since we've spent significant effort in eradicating it across the repository.
gcc patches copied in FILESDIR.