[CMake] Using different installs/versions of the OpenCV library

[Andreas Haferburg]

Have you tried specifying the version?

FIND_PACKAGE(OpenCV 2.2.0 EXACT REQUIRED)

FIND_PACKAGE(OpenCV 2.4.0 EXACT REQUIRED)

Not sure if the FindOpenCV script can handle the version argument.

Andreas

On 14.02.2013 11:42, Bart Vandewoestyne wrote:
> Hello list,
>
> To compile and link my code with the OpenCV library, I use
>
> find_package( OpenCV REQUIRED )
> ...
> add_executable(framecountertest framecountertest.cpp)
> target_link_libraries(framecountertest ${OpenCV_LIBS})
>
> and this works just fine: the OpenCV library that got installed using my package management system
> on Ubuntu 12.10 is being used.
>
> However, under the directory /tmp/opencv_install I have another manual installation of a more recent
> OpenCV library, and I would like to use that one instead of the default on my system, or easily
> switch between the two versions.  How should I specify that in my CMakeLists.txt file?  I have tried
>
> set(OpenCV_FOUND "1")
> set(OpenCV_INCLUDE_DIR "/home/bart/Git/Research/fat/inc/TraficonOpenCv/opencv")
> set(OpenCV_LIBS
> "opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core")
>
> include_directories(${OpenCV_INCLUDE_DIR})
> ...
> add_executable(framecountertest framecountertest.cpp)
> target_link_libraries(framecountertest ${OpenCV_LIBS})
>
> but even with these commands, still the default libs on my system are being used...
>
> What is the correct way to specify that I want to build with the install under /tmp/opencv_install
> ?  And how can I easily switch between versions without needing to remove one or the other version?
>
> Thanks!
> Bart
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