Version 3.3.4 is available upstream. Please consider updating! It seems that version 3.3.4 is available upstream, while the latest version in the Gentoo tree is 3.0.3. You think this warning is false? Read more about it here.
suitesparseconfig-7.0.0 fails to build with multilib enabled because of dependencies that cannot be satisfied. All the other packages require it. Bug #908851.
Constrained COLAMD computes an column approximate minimum degree ordering
algorithm, (like COLAMD), but it can also be given a set of ordering
constraints.