title: Qt5 OpenCV3.4.5 LNK1105 cannot open opencv_world345d.obj
body: <p>I am building a Qt5 project with OpenCV3.4.5 in windows. The OpenCV is a prebuilt version with <code>opencv_world345.lib</code> and <code>opencv_world345dlib</code>. I create a <code>.pri</code> file for including opencv into the Qt project. Here below is for the opencv <code>.pri</code> file:</p>
  
  <pre><code>INCLUDEPATH += C:/opencv-3.4.5/prebuild/include \
                 C:/opencv-3.4.5/prebuild/include/opencv \
                 C:/opencv-3.4.5/prebuild/include/opencv2
  Debug: {
  LIBS += lc:/opencv-3.4.5/prebuild/x64/vc14/lib/opencv_world345d
  }
  Release: {
  LIBS += lc:/opencv-3.4.5/prebuild/x64/vc14/lib/opencv_world345
  }
  </code></pre>
  
  <p>I also set <code>C:\opencv-3.4.5\prebuild\x64\vc14\bin</code> in the path of systems variables. </p>
  
  <p>Building the project in debug mode gives the error: <code>LINK : fatal error LNK1104: cannot open file 'lc:\opencv-3.4.5\prebuild\x64\vc14\lib\opencv_world345d.obj'</code>.</p>
  
  <p>What causes the error? Do I miss something else in configuring opencv for Qt?</p>