maintainer-feedback requested: [Bug 250833] math/eigen3: upgrade to 3.3.8 + add dependencies

[bugzilla-noreply at freebsd.org]

Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-kde (Team)
<kde at FreeBSD.org> for maintainer-feedback:
Bug 250833: math/eigen3: upgrade to 3.3.8 + add dependencies
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250833



--- Description ---
The attached patch upgrades math/eigen3 to 3.3.8.

Changelog is available at
http://eigen.tuxfamily.org/index.php?title=ChangeLog#Eigen_3.3.8

Since I'm there, I added some dependencies: cmake is launched during the
configure step, and if built as a port, the macros Find_Package locate some
dependencies which are not registered.

Note: I suggest an OPTION, so that it could be disabled.