[vtkusers] vtkMarchingCubes error

[Vetria Byrd]

I am trying to compile C++ code using vtkMarching Cubes.  

Here's some of the code:

#include "vtkMarchingCubes.h"
:
:

vtkVolume16Reader *v16 = vtkVolume16Reader::New();
   v16->SetDataDimensions(128,128);
   v16->GetOutput()->SetOrigin(0.0,0.0,0.0);
   v16->SetDataByteOrderToLittleEndian();
   v16->SetFilePrefix("/headsq/half");
   v16->SetImageRange(1,93);
   v16->SetDataSpacing(1.6,1.6,1.5);

vtkMarchingCubes *iso = vtkMarchingCubes::New();
   iso->SetInput(v16->GetOutput() );
   iso->SetValue(0,1150);


Which generates the following error messages:

Building executable /mz/hd/byrdv/headbone/headbone...
headbone.o: In function `main':
headbone.o(.text+0x1d4): undefined reference to `vtkMarchingCubes::New(void)'
headbone.o(.text+0x234): undefined reference to `vtkMarchingCubes::SetValue(int, float)'
collect2: ld returned 1 exit status

I have included vtkMarchingCubes.h along with other needed .h files.
Not sure what the problem is. Any assistance would be greatly appreciated.

Thank you,
Vetria