title: error LNK1104 - cannot open *.obj
body: <p>I'm trying to build the Parrot ARDrone SDK v1.8 in Visual Studio 2012 Express on Windows 8. I've managed to get all the errors fixed up to this set:  </p>
  
  <pre><code>1 warning C4201: nonstandard extension used : nameless struct/union
  2 warning C4389: '==' : signed/unsigned mismatch
  3 warning C4100: 'cfg' : unreferenced formal parameter
  4 warning C4100: 'cfg' : unreferenced formal parameter
  5 warning C4100: 'cfg' : unreferenced formal parameter
  6 warning LNK4006: _gettimeofday already defined in video_stage_recorder.obj; second definition ignored
  7 warning LNK4006: _gettimeofday already defined in video_stage_recorder.obj; second definition ignored
  8 error LNK1004: cannot open file 'C:\Users\Daniel\ArDrone\ARDrone-1.8\ARDroneLib.obj'
  </code></pre>
  
  <p>I can't seem to find any answers to this error anywhere. Would any of the warnings be a cause for the 1104 linker error? Is there any way I can get more information from VS about what the cause could be?</p>
  
  <p>Any help/suggestions are welcome and appreciated.</p>
  
  <p>Dan</p>