ENH: fix problem with building vtk 4.4.2

Modules/VTKCompatibility.cmake

@@ -4,3 +4,9 @@ IF(APPLE)
   STRING( REGEX REPLACE "CMAKE_C_COMPILER" CMAKE_CXX_COMPILER CMAKE_CXX_CREATE_SHARED_MODULE "${CMAKE_CXX_CREATE_SHARED_MODULE}")
   STRING( REGEX REPLACE "CMAKE_C_COMPILER" CMAKE_CXX_COMPILER CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_CXX_CREATE_SHARED_LIBRARY}")
 ENDIF(APPLE)
+
+SET(VTKFTGL_BINARY_DIR "${VTK_BINARY_DIR}/Utilities/ftgl" CACHE INTERNAL "")
+SET(VTKFREETYPE_BINARY_DIR "${VTK_BINARY_DIR}/Utilities/freetype" CACHE INTERNAL "")
+SET(VTKFTGL_SOURCE_DIR "${VTK_SOURCE_DIR}/Utilities/ftgl" CACHE INTERNAL "")
+SET(VTKFREETYPE_SOURCE_DIR "${VTK_SOURCE_DIR}/Utilities/freetype" CACHE INTERNAL "")
+