Linux error while loading shared libraries: cannot open shared object file: No such file or directory

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Your library is a dynamic library.
You need to tell the operating system where it can locate it at runtime.

To do so,
we will need to do those easy steps:

  1. Find where the library is placed if you don’t know it.

    sudo find / -name the_name_of_the_file.so

  2. Check for the existence of the dynamic library path environment variable(LD_LIBRARY_PATH)

    echo $LD_LIBRARY_PATH

    If there is nothing to be displayed, add a default path value (or not if you wish to)

    LD_LIBRARY_PATH=/usr/local/lib

  3. We add the desired path, export it and try the application.

    Note that the path should be the directory where the path.so.something is. So if path.so.something is in /my_library/path.so.something, it should be:

    LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/my_library/
export LD_LIBRARY_PATH
./my_app

Reference to source

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