title: libcurl, C, compiling example warning 'select@20'
body: <p>By compiling libcurl examples with gcc mingw+codeblocks on windows I found a problem:
  This example:</p>
  
  <pre><code>http://curl.haxx.se/libcurl/c/fopen.html
  </code></pre>
  
  <p>gives an error (NOT WARNING but error is not "quality" word for topic) during compiling:</p>
  
  <blockquote>
    <p>...\fopen.c|134|undefined reference to `select@20'</p>
  </blockquote>
  
  <p>On that line...</p>
  
  <pre><code>rc = select(maxfd+1, &amp;fdread, &amp;fdwrite, &amp;fdexcep, &amp;timeout);
  </code></pre>
  
  <p>How to get rid of that error?</p>