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I've tried following this tutorial: https://www.learnopencv.com/install-opencv-4-on-raspberry-pi/

I installed a fresh copy of Raspbian Buster on the Raspberry Pi 2 before following the tutorial.

It gave me errors after running “make -j$(nproc)”:

[ 34%] Building CXX object samples/opengl/CMakeFiles/example_opengl_opengl.dir/opengl.cpp.o
/home/pi/opencv/samples/opengl/opengl.cpp:14:14: fatal error: GL/glu.h: No such         
file or directory
 #include <GL/glu.h>
          ^~~~~~~~~~
 compilation terminated.
 make[2]: *** [samples/opengl/CMakeFiles/example_opengl_opengl.dir/build.make:63: 
 samples/opengl/CMakeFiles/example_opengl_opengl.dir/opengl.cpp.o] Error 1
 make[1]: *** [CMakeFiles/Makefile2:37187: 
 samples/opengl/CMakeFiles/example_opengl_opengl.dir/all] Error 2
 make[1]: *** Waiting for unfinished jobs....

At the very end of “make -j$(nproc)”:

[ 37%] Built target opencv_cvv
make: *** [Makefile:163: all] Error 2

I am very new to raspberry pi's and OpenCV so I do not know if the tutorial is valid or outdated. Thanks for the help.

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  • looks like a bunch of header files are missing – Jaromanda X Dec 22 '19 at 23:20
  • @JaromandaX Yes I see that, but I don't know why or how to install them – Titan Dec 22 '19 at 23:22
  • did you run all the commands in Step 2: Install OS Libraries - were there any errors? in second tutorial it's the apt get after Then you can install all the important tools and libraries needed for OpenCV – Jaromanda X Dec 22 '19 at 23:25
  • @JaromandaX As I mentioned before, the first tutorial had a "Timeout" error after executing "sudo apt-get -y install libgtk2.0-dev libtbb-dev qt5-default" – Titan Dec 22 '19 at 23:28
  • this timeout occur every time you tried? or did you try once and think it wasn't important to install those libraries? – Jaromanda X Dec 22 '19 at 23:29
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If you do not have special requirements to compile OpenCV from source it is not a good idea to do it, in particular by newbies. You find the OpenCV library in the default Raspbian repository. Just look at it with:

rpi ~$ apt list *opencv*

You will find 75 packages. Just pick that one you need and install it.

rpi ~$ sudo apt install python3-opencv

may be a good choice.

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  • Thank you! This is so much easier than what I was doing, happy holidays! – Titan Dec 25 '19 at 7:47

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