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So I have a question concerning a .so file in Ubuntu. I'm trying to run a program in QT creator, but I get the error 

/home/sean/Desktop/iStrabGUI_140321/iStrabGUI: error while loading 
shared libraries: libopencv_core.so.2.3: 
cannot open shared object file: No such file or directory

My opencv and opencv2 directories are located at /usr/include, and I did add them to my LD_LIBRARY_PATH variable. However, after checking inside the opencv and opencv2 directories, it doesn't seem like the file is there at all. My question is, how do I go about getting this file? I've already installed libopencv-dev on my computer, so where does this come from?

Coliwack
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  • This could help you out, it's quite similar to your problem: [openCV program compile error “libopencv_core.so.2.4: cannot open shared object file: No such file or directory” in ubuntu 12.04](http://stackoverflow.com/questions/12335848/opencv-program-compile-error-libopencv-core-so-2-4-cannot-open-shared-object-f) – Daniel R. Jun 11 '16 at 20:02
  • Hello, and thank you for the comment. I've tried the solutions detailed in the post you referred me to, but I had the same problem. I've tried looking for the files on my machine, but I have been unable to find them. I think that might be part of what the problem is. – Coliwack Jun 12 '16 at 17:43

1 Answers1

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If you really can not find the shared library, it seems to me that you have not installed openCV properly. You might have downloaded openCV but not built the libraries, I assume?

Since you are using Ubuntu you can install openCV from the Ubuntu repository sudo apt-get install libopencv-dev python-opencv

Daniel R.
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