pkg dependency problem with updated opencv

[Kevin Oberman]

After an update to opencv-core today, I found ffmpeg was unable to run as
it was linked to the old version of the libraries installed by opencv-core.
There was no PORTREVISION bump made to ffmpeg even though it links to those
libraries by default. opencv-core is shown as a libdepend in ffmpeg's
Makefile.

pkg check -B ffmpeg also shows no problem.

This is rather significant as any port linking to libav* will now fail and
need a rebuild. On my system alone, this totals at least 26 ports that just
broke with no indication of any problem. Do I not understand what pkg check
-B does?
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman at gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683