title: How can I solve undefined reference from a shared library?
body: <p>I've already take a look on ALL answers in stackoverflow: no way.</p>
  
  <p>I've compiled a shared library A that use Nite1.3. So my library is in:</p>
  
  <pre><code> /usr/local/lib/A.so
  </code></pre>
  
  <p>I've my project B that include A.</p>
  
  <p>Compiling B, I get a lot of undefined reference to.. how can I really solve the problem?</p>
  
  <pre><code>usr/local/lib/A.so: undefined reference to `XnVFlowRouter::XnVFlowRouter(char const*)'
  .....
  </code></pre>