- Fix build with modern compilers in the contrib module [1]
- Fix build of opencv-core with clang in the ts module [2]
- Fix build with QT option [3]
- Fix build of py-opencv with clang [4]
Reported by: avg [1], Robert Huff <roberthuff@rcn.com> [2]
PR: ports/182443 [3], ports/182837 [4]
Submitted by: O. Hartmann <ohartman@zedat.fu-berlin.de> [3], pawel [4]
