title: What does "InitGoogleLogging" do?
body: <p>I've been modifying an <a href="https://github.com/BVLC/caffe/blob/master/examples/cpp_classification/classification.cpp" rel="noreferrer">example C++ program</a> from the Caffe deep learning library and I noticed this code on <a href="https://github.com/BVLC/caffe/blob/master/examples/cpp_classification/classification.cpp#L234" rel="noreferrer">line 234</a> that doesn't appear to be referenced again.</p>
  
  <pre><code>::google::InitGoogleLogging(argv[0]);
  </code></pre>
  
  <p>The argument provided is a prototxt file which defines the parameters of the deep learning model I'm calling. The thing that is confusing me is where the results from this line go? I know they end up being used in the program because if I make a mistake in the prototxt file then the program will crash. However I'm struggling to see how the data is passed to the class performing the classification tasks.</p>