On 7 April 2018 at 21:56, Chris Stankevitz via Boost-users <boost-users@lists.boost.org> wrote:

Can't find anything about it in the docs.

"Unknown compiler version - please run the configure tests and report
the results" [1]

You must me using a newer version of VS than the (a somewhat) current version of VS at the time of release of Boost 1.XX.

The warning should be ignored (this is a known problem, formally correct, but generally harmless (until it's not ;-) )).

degski