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Problem compiling kalman filter program

asked 2019-04-27 12:25:02 -0500

D3CIM8OR gravatar image

Hello, I am having some trouble compiling the sample kalman filter program found on

I get the following output when I try to build the program

g++ -o  kalman kalman.o -lopencv_core -lopencv_tracking -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs -lopencv_videoio -lopencv_objdetect
/usr/bin/ld: kalman.o: undefined reference to symbol '_ZN2cv12KalmanFilter7predictERKNS_3MatE'
/usr/bin/ld: /usr/lib/ error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make: *** [Makefile:9: kalman] Error 1

I am using my own Makefile for this, and this is the LIB variable in my makefile

LIBS=-lopencv_core -lopencv_tracking -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs -lopencv_videoio -lopencv_objdetect

And just in case, here is my entire Makefile:

LIBS=-lopencv_core -lopencv_tracking -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs -lopencv_videoio -lopencv_objdetect
%.o: %.cpp
        $(CC) -c -o $@ $< $(LIBS)
kalman: $(OBJ)
        $(CC) -o  $@ $^ $(LIBS)

The #includes for this program seem to suggest that the only libraries that are required to be linked are -lopencv_core, -lopencv_tracking, and -lopencv_highgui I originally had -lopencv_tracking as the very last library to link and I got the exact same error. I then promoted it to the second library to be linked and that yielded the same error.


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answered 2019-04-27 13:18:09 -0500

berak gravatar image

updated 2019-04-27 13:20:06 -0500

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Asked: 2019-04-27 12:25:02 -0500

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Last updated: Apr 27 '19