title: How include header file with cuda constants in any files
body: <p>I have header file with this constants</p>
  
  <pre><code>__constant__ er_t SERIES_PREC;
  __constant__ er_t ONE;
  __constant__ er_t HALF;
  </code></pre>
  
  <p>I can't include this header file in any *.cu files - error linkin.
  How can i use constant memory in this situation?</p>