Version 2.4.6.3 is available upstream. Please consider updating!
It seems that version 2.4.6.3 is available upstream, while the latest version in the Gentoo tree is 2.4.6.2. You think this warning is false? Read more about it here.
A Class Library for High Energy Physics is intended to be a set of
HEP-specific foundation and utility classes such as random
generators, physics vectors, geometry and linear algebra.