Compiling opencv samples: unknown cmake command ocv_check_dependencies

Question

I am trying to build the OpenCV samples which come with the source package and I get the following:

CMake Error at CMakeLists.txt:10 (ocv_check_dependencies)         


        

Answer 1

How to compile OpenCV sample code ?

# For OpenCV 3 
cd /path/to/opencv/samples/cpp/
#Compile
g++ -ggdb `pkg-config --cflags --libs opencv` facedetect.cpp -o facedetect
#run
./facedetect

Works for me.

googled from this link