<i> Dear ITK-users,<br></i><i>I am a new person to ITK. I am trying to rebuild 
</i><br><i> RawImageViewer application from Insight application </i><i> . But I got the following link errors.</i><i>, Could you please give me some 
</i>&gt;<i> hints on this issue. Thank you very much.<br><br>&gt;   Creating library G:\InsightApplications-3.20.0\InsightApplications-3.20.0\Insight2005\RawImageReaderViewer\Debug\RawImageReaderViewer.lib and object G:\InsightApplications-3.20.0\InsightApplications-3.20.0\Insight2005\RawImageReaderViewer\Debug\RawImageReaderViewer.exp<br>
4&gt;itkRawImageReaderViewer.obj : error LNK2019: unresolved external symbol &quot;public: virtual __thiscall fltkImageViewerGUI::~fltkImageViewerGUI(void)&quot; (??1fltkImageViewerGUI@@UAE@XZ) referenced in function __unwindfunclet$??0?$ImageViewer@EE@fltk@@QAE@XZ$0<br>
4&gt;itkRawImageReaderViewer.obj : error LNK2019: unresolved external symbol &quot;public: __thiscall fltkImageViewerGUI::fltkImageViewerGUI(void)&quot; (??0fltkImageViewerGUI@@QAE@XZ) referenced in function &quot;public: __thiscall fltk::ImageViewer&lt;unsigned char,unsigned char&gt;::ImageViewer&lt;unsigned char,unsigned char&gt;(void)&quot; (??0?$ImageViewer@EE@fltk@@QAE@XZ)<br>
4&gt;itkRawImageReaderViewer.obj : error LNK2001: unresolved external symbol &quot;public: virtual void __thiscall fltkImageViewerGUI::AddMenuBarOptions(void)&quot; (?AddMenuBarOptions@fltkImageViewerGUI@@UAEXXZ)<br>4&gt;itkRawImageReaderViewer.obj : error LNK2001: unresolved external symbol &quot;public: virtual void __thiscall fltkImageViewerGUI::AddFilterMenuOptions(void)&quot; (?AddFilterMenuOptions@fltkImageViewerGUI@@UAEXXZ)<br>
4&gt;itkRawImageReaderViewer.obj : error LNK2001: unresolved external symbol &quot;public: virtual void __thiscall fltkImageViewerGUI::AddFileMenuOptions(void)&quot; (?AddFileMenuOptions@fltkImageViewerGUI@@UAEXXZ)<br>4&gt;itkRawImageReaderViewerGUI.obj : error LNK2019: unresolved external symbol &quot;public: virtual __thiscall RawImageReaderViewerGUI::~RawImageReaderViewerGUI(void)&quot; (??1RawImageReaderViewerGUI@@UAE@XZ) referenced in function &quot;public: virtual void * __thiscall RawImageReaderViewerGUI::`scalar deleting destructor&#39;(unsigned int)&quot; (??_GRawImageReaderViewerGUI@@UAEPAXI@Z)<br>
4&gt;G:\InsightApplications-3.20.0\InsightApplications-3.20.0\Insight2005\RawImageReaderViewer\Debug\RawImageReaderViewer.exe : fatal error LNK1120: 6 unresolved externals<br>4&gt;Build log was saved at &quot;file://g:\InsightApplications-3.20.0\InsightApplications-3.20.0\Insight2005\RawImageReaderViewer\RawImageReaderViewer.dir\Debug\BuildLog.htm&quot;<br>
4&gt;RawImageReaderViewer - 7 error(s), 1 warning(s)<br><br>please help me.<br></i>