Cmake not working

-- Ice
-- Could NOT find PY_Ice (missing: PY_ICE)
CMake Error at interfaces/slice/CMakeLists.txt:25 (file):
  file COPY cannot find
  "/home/azzi/gpsTry1/GPS-Server/interfaces/slice/../python/GPS_ice.py": No
  such file or directory.
  
  Please tell how to proceed