Cmake: OpenCV > 2.4.3 not found. , but via pip: opencv-contrib-python (3.4.0.12) is installed

hello, not sure what shall I do?
cmake cannot find opencv, which I installed for python2 and 3 via pip and the version is: opencv-contrib-python (3.4.0.12)

How to set path to opencv pip package correctly? Or do I need to recompile opencv from source?

Error message by Cmake:

-- Using flag -std=c++11.
CMake Error at CMakeLists.txt:35 (message):
  OpenCV > 2.4.3 not found.