[CMake] CMAKE error when I add my own library

[Bill Hoffman]

irene gonzalvez wrote:
> Dear CMake-users,
...
> 
> ADD_LIBRARY (myfunctions 
> Library/itkBinaryBallStructuringElement_modified.txx)
> 
A .txx file is a template file.  It is not a compiled file.  That is why 
your library is empty.

-Bill