libopencv_imgcodecs.so.3.2: cannot open shared object file: No such file or directory

Question

I know that a similar question has been asked before, but none of the suggestions have helped.

I am trying to compile an OpenCV project using C++ in Ubuntu 15.10. I can run the project correctly in Netbeans. But I am supposed to send this to someone who will be using the command line. I can compile the program with the line:

 g++ -ggdb -o convert *.cpp  \`pkg-config --cflags --libs opencv\`

Where convert is the chosen name for the executable. There are no problems after executing this line. But when I run

./convert "image1.tif" "image2.tif"

I get:

  ./convert: error while loading shared libraries: libopencv_imgcodecs.so.3.2: cannot 
open shared object file: No such file or directory

In my .cpp files, I have:

#include "/usr/local/include/opencv2/highgui/highgui.hpp"

The file libopencv_imgcodecs.so.3.2 is in my /usr/local/lib folder. I tried putting -L/usr/local/lib in the command line, but this did not help. Perhaps this file path needs to go in a specific order in the command line? The order mattered for the pkg-config --cflags --libs opencv, which had to come after the -o convert *.cpp.

Answer 1

Just for convenience, as the first comment said, you just need:

export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/lib

if your CMAKE_INSTALL_PREFIX=/usr/local