title: Error when building a wrapper to a library that uses PCL
body: <p>I have got the following errors in link phase</p>
  
  <blockquote>
    <p>error LNK2028: unresolved token (0A005083) "public: virtual __cdecl
    pcl::io::IOException::~IOException(void)"
    (??1IOException@io@pcl@@$$FUEAA@XZ) referenced in function "public:
    virtual void * __cdecl pcl::io::IOException::`vector deleting
    destructor'(unsigned int)" (??_EIOException@io@pcl@@$$FUEAAPEAXI@Z)</p>
    
    <p>error LNK2001: unresolved external symbol "public: virtual char const
    * __cdecl pcl::io::IOException::what(void)const " (?what@IOException@io@pcl@@UEBAPEBDXZ)</p>
    
    <p>error LNK2019: unresolved external symbol "public: virtual __cdecl
    pcl::io::IOException::~IOException(void)"
    (??1IOException@io@pcl@@$$FUEAA@XZ) referenced in function "public:
    virtual void * __cdecl pcl::io::IOException::`vector deleting
    destructor'(unsigned int)" (??_EIOException@io@pcl@@$$FUEAAPEAXI@Z)</p>
  </blockquote>
  
  <p>Any ideas why that is happening to me?</p>