The standard install of
opencv appears to be broken on Fedora 24 - because (when loading an image) it
libavcodec.so.53 whereas up-to-date
ffmpeg-devel has an apparently useless
So, building from source appears to be the way to go (particularly since Fedora 24 has
opencv ~2.4.12, rather than
Building OpenCV from source
This makes use of
these instructions. Clone OpenCV from GitHub
git clone https://github.com/Itseez/opencv.git
mkdir build Install required packages
install tbb-devel eigen3-devel
## If you need video (for png, jpeg only this isn't required)
#dnf install ffmpeg-devel Prepare
One thing that I didn’t realise before, is that
cmake options are cumulative across commandline invocations :
cd ../opencv/build # ensure we're in the right place
cmake -D WITH_TBB =ON -D WITH_EIGEN =ON -D WITH_JAVA =OFF ..
cmake -D BUILD_DOCS =OFF -D BUILD_TESTS =OFF -D BUILD_PERF_TESTS =OFF -D BUILD_EXAMPLES =OFF ..
cmake -D WITH_OPENCL =OFF -D WITH_CUDA =OFF -D BUILD_opencv_gpu =OFF -D BUILD_opencv_gpuarithm =OFF -D BUILD_opencv_gpubgsegm =OFF -D BUILD_opencv_gpucodec =OFF -D BUILD_opencv_gpufeatures2d =OFF -D BUILD_opencv_gpufilters =OFF -D BUILD_opencv_gpuimgproc =OFF -D BUILD_opencv_gpulegacy =OFF -D BUILD_opencv_gpuoptflow =OFF -D BUILD_opencv_gpustereo =OFF -D BUILD_opencv_gpuwarping =OFF ..
cmake -D CMAKE_BUILD_TYPE =RELEASE -D CMAKE_INSTALL_PREFIX =/usr .. Build
cd ../build # ensure we're in the right place
sudo make install Test that Python integration works
Documentation is available
(default, Jun 21 2016, 09:15:12 )
[GCC 6.1.1 20160510 (Red Hat 6.1.1-2 )] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2