How to Choose which OpenCV to use in CMakeLists.txt when I have two OpenCV (same versions) in my computer?

Question

I installed ROS in my computer. And ROS automatically installed opencv 3.2 in my computer. As I need to use functions in opencv's extra modules, I installed opencv again from source.

Now I have a c++ project and I want to use the opencv I installed from source instead of the one that comes with ROS. As both are 3.2 version, I don't know how to select which opencv to use in CMakeLists.txt.

Please indicate how you configured CMake to search for OpenCV. — piwi, Apr 25 '17 at 10:19
I just use `find_package(OpenCV 3.2 QUIET)`, which automatically find the opencv in ROS — tczj, Apr 25 '17 at 10:21

score 3 · Accepted Answer · edited Apr 25 '17 at 11:30

3

You can indicate where to search for packages by changing parameters to find_package(), for example:

find_package(OpenCV 3.2 QUIET NO_DEFAULT_PATH PATHS "/path/to/custom/opencv")

In this case, CMake will not search for OpenCV in usual locations but will search only in the path you specified.

edited Apr 25 '17 at 11:30

Antonio

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answered Apr 25 '17 at 10:26

piwi

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How to Choose which OpenCV to use in CMakeLists.txt when I have two OpenCV (same versions) in my computer?

1 Answers1