title: YAML-CPP with QTcreator
body: <p>i try to use yaml-cpp in cmake with windows 7</p>
  
  <p>I followed the tutorial and build the cmake and get yaml-cpp.dll , yaml-cpp.lib , yaml-cpp.exp</p>
  
  <p>i saved them inside the libs directory in my project.</p>
  
  <p>with</p>
  
  <pre><code>LIBS += -L$$PWD/libs -lyaml-cpp
  </code></pre>
  
  <p>i add in in my pro file. The include files are added with</p>
  
  <pre><code>INCLUDEPATH +=$$PWD\includes
  </code></pre>
  
  <p>inside this is my yaml-cpp directory with all include files.</p>
  
  <p>On my program I use</p>
  
  <pre><code>#include &lt;yaml-cpp/yaml.h&gt;
  </code></pre>
  
  <p>This all is compiling without an error. But when I add </p>
  
  <pre><code>    YAML::Node doc;
  </code></pre>
  
  <p>i get the undefiened reference to Yaml::Node ERROR</p>
  
  <p>i dont know what i have forgot to link.</p>
  
  <p>Do you have an idea? thank you for help</p>