title: Fatal error: no such file or directory
body: <p>I have downloaded the source code to do some benchmark for couple of C++ library. I don't have much knowledge in C++. I downloaded the libraries. When I try to compile the code </p>
  
  <pre><code>g++ test_matrix_pseudoinverse.cpp -o test_matrix_pseudoinverse
  </code></pre>
  
  <p>I get this error </p>
  
  <blockquote>
    <p>test_matrix_pseudoinverse.cpp:26:64: fatal error:
    opencv2.4/modules/core/include/opencv2/core/core.hpp: No such file or
    directory  #include
    
                                                                    ^ compilation terminated.</p>
  </blockquote>
  
  <p>The source code with all the libraries are in github</p>
  
  <p><a href="https://github.com/shiblybcc/linear-algebra-benchmark" rel="nofollow">https://github.com/shiblybcc/linear-algebra-benchmark</a>  </p>
  
  <p>I have downloaded the code from <a href="http://nghiaho.com/?p=1726" rel="nofollow">here</a>. It would be nice if someone could tell me why I am getting this error and how to run the code without any error. </p>
  
  <p>I am on linux and I have added opencv2 folder in /usr/local/include directory.</p>