Version 5.7.3 is available upstream. Please consider updating! It seems that version 5.7.3 is available upstream, while the latest version in the Gentoo tree is 5.3.5-r1. You think this warning is false? Read more about it here.
MUltifrontal Massively Parallel sparse direct Solver implements a
direct solver for large sparse linear systems, with a particular
focus on symmetric positive definite matrices. It can operate on
distributed matrices e.g. over a cluster. It has Fortran and C
interfaces, and can interface with ordering tools such
as Scotch or Metis.