Available versions: 4.3.20150611 (~)4.3.20150611-r1 If you look at https://www.threadingbuildingblocks.org/download there is a 2017 version avalable under Apache license. Please provide a newer version ebuild
commit d83b58a15ac52dd23cce857445c8972e446c5938 Author: Matthias Maier <tamiko@gentoo.org> Date: Thu Mar 30 21:15:10 2017 -0500 dev-cpp/tbb: version bump to 2017.20170226 Package-Manager: Portage-2.3.3, Repoman-2.3.2 commit 0451d48fdba160cc23c46611d1cf4decf10946e3 Author: Matthias Maier <tamiko@gentoo.org> Date: Thu Mar 30 21:06:23 2017 -0500 dev-cpp/tbb: version bump to 4.4.20160803, bug #596130 Package-Manager: Portage-2.3.3, Repoman-2.3.2