Set Opencv path for a c++ project using Cmake

Question

I have two Opencvs, opencv-2.4.10 is installed in /usr and opencv-3.1 is installed in /usr/local. I can set the opencv path in Eclipse easily. In cmake, how can I set the path f

Answer 1

I don't have a Linux machine to test it on but this is how I do it on Windows 10 64bit.

I only added a line in the CmakeLists.txt in my program to set the variable OpenCV_DIR used by CMake.

For example, if OpenCV is installed in C:/opencv, I add

SET("OpenCV_DIR" "C:/opencv")

in my CMakeLists.txt.

In your case, it should be something like

SET("OpenCV_DIR" "/usr/opencv-2.4.10")

But, as I said, I never tested this on Linux.