title: Openfstexample.cpp:1:24: fatal error: fst/fstlib.h: No such file or directory compilation terminated
body: <p>I am  trying to compile following code using <code>gcc</code> in Ubuntu 10.04</p>
  
  <pre><code>#include &lt;fst/fstlib.h&gt;
  
  namespace fst {
    // Reads in an input FST. 
    StdVectorFst *input = StdVectorFst::Read("input.fst");
  
    // Reads in the transduction model. 
    StdVectorFst *model = StdVectorFst::Read("model.fst");
  
    // The FSTs must be sorted along the dimensions they will be joined.
    // In fact, only one needs to be so sorted.
    // This could have instead been done for "model.fst" when it was created. 
    ArcSort(input, StdOLabelCompare());
    ArcSort(model, StdILabelCompare());
  
    // Container for composition result. 
    StdVectorFst result;
  
    // Creates the composed FST. 
    Compose(*input, *model, &amp;result);
  
    // Just keeps the output labels. 
    Project(&amp;result, PROJECT_OUTPUT);
  
    // Writes the result FST to a file.
    result.Write("result.fst");
  }
  </code></pre>
  
  <p>It gives following error </p>
  
  <pre><code>Openfstexample.cpp:1:24: fatal error: fst/fstlib.h: No such file or directory
  compilation terminated.
  </code></pre>
  
  <p>Please note that I have already installed Openfst from <a href="http://www.openfst.org/" rel="nofollow">http://www.openfst.org/</a></p>
  
  <p>Any clues?</p>