media-libs/libde265 supports both qt4 and qt5, although this seems to be partially automagic. In any case, qt4 is dead so please remove that USE flag.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=98e05db324830a18e8abc20b1766e0966bc14300 commit 98e05db324830a18e8abc20b1766e0966bc14300 Author: Andreas Sturmlechner <asturm@gentoo.org> AuthorDate: 2017-11-20 19:54:30 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2017-11-20 19:55:39 +0000 media-libs/libde265: Drop USE=qt4,tools, unnecessary REQUIRED_USE Bug: https://bugs.gentoo.org/600726 Closes: https://bugs.gentoo.org/631810 Package-Manager: Portage-2.3.13, Repoman-2.3.4 media-libs/libde265/Manifest | 1 - media-libs/libde265/libde265-1.0.2.ebuild | 17 +++++++++-------- media-libs/libde265/libde265-9999.ebuild | 15 ++++++++------- media-libs/libde265/metadata.xml | 3 --- 4 files changed, 17 insertions(+), 19 deletions(-)