Description of problem: Please, update OpenCV to last stable release is 2.4.9. 2.4.9 is minimal version required by Digikam 4.1.0 https://projects.kde.org/projects/extragear/libs/libkface/repository/revisions/4662dd94102f8144bc65ce1cb66d6b6cb1d500fd
*** This bug has been marked as a duplicate of bug 1114377 ***