I recently install a fedora 18 after few years under ubuntu.
After the apropriate updates, I download and recompile, my favorites libraries such as Opencv and PCL.
In order to check if everything was ok I tried to compile the folowing code :
cv::Mat im = cv::imread("023.JPG");
cv::resize(im.clone(),im,cv::Size(600,800));
cv::imshow("default",im);
cv::waitkey(0);
The compilation step look like have succed, but when I try to execute this code I got the following :
/home/jonny/Desktop/prog/MMSE_SD2/test_opencv-build-desktop-Qt_4_8_4_in_PATH_System_Release/test_opencv: symbol lookup error: /home/jonny/Desktop/prog/MMSE_SD2/test_opencv-build-desktop-Qt_4_8_4_in_PATH_System_Release/test_opencv: undefined symbol: _ZN2cv12_OutputArrayD1Ev
I use qtcreator as IDE.
My .pro file looklike this :
INCLUDEPATH +=/usr/local/include/opencv-2.4.9
LIBS += -lopencv_core \
-lopencv_highgui \
-lopencv_imgproc \
-lopencv_calib3d \
-lopencv_contrib \
-lopencv_features2d \
-lopencv_flann \
-lopencv_legacy \
-lopencv_ml \
-lopencv_objdetect \
-lopencv_video
SOURCES += \
main.cpp
I recompiled three time opencv library without success.
If someone can help I really appreciate.
Thanks in advance
Jonny
My assumption is that you have an older version of OpenCV installed in the system and your program is runtime-linked to the wrong libraries.
You can easily check this by calling ldd <binary>
, which will list the libraries your binary will be linked to. If they are not the ones you installed in /usr/local/lib/, you may fix the issue by setting LD_LIBRARY_PATH.