ENH: Added FindCTK script to Utilites/CMake/

Utilities/CMake/FindCTK.cmake

@@ -0,0 +1,44 @@
+# - Find a CTK installation or build tree.
+# The following variables are set if CTK is found.  If CTK is not
+# found, CTK_FOUND is set to false.
+#  CTK_FOUND         - Set to true when VTK is found.
+#  CTK_USE_FILE      - CMake file to use VTK.
+#  CTK_MAJOR_VERSION - The VTK major version number.
+#  CTK_MINOR_VERSION - The VTK minor version number
+#                       (odd non-release).
+#  CTK_BUILD_VERSION - The VTK patch level
+#                       (meaningless for odd minor).
+#  CTK_INCLUDE_DIRS  - Include directories for CTK
+#  CTK_LIBRARY_DIRS  - Link directories for CTK libraries
+#
+# The following cache entries must be set by the user to locate VTK:
+#  CTK_DIR  - The directory containing CTKConfig.cmake.
+#             This is either the root of the build tree,
+#             or the lib/vtk directory.  This is the 
+#             only cache entry.
+#
+
+# Assume not found.
+SET(CTK_FOUND 0)
+
+# Construct consitent error messages for use below.
+SET(CTK_DIR_MESSAGE "CTK not found.  Set the CTK_DIR cmake cache entry to the directory containing CTKConfig.cmake.  This is either the root of the build tree, or PREFIX/lib/vtk for an installation.")
+
+# Use the Config mode of the find_package() command to find CTKConfig.
+# If this succeeds (possibly because CTK_DIR is already set), the
+# command will have already loaded CTKConfig.cmake and set CTK_FOUND.
+IF(NOT CTK_FOUND)
+  FIND_PACKAGE(CTK QUIET NO_MODULE)
+ENDIF()
+
+#-----------------------------------------------------------------------------
+IF(NOT CTK_FOUND)
+  # CTK not found, explain to the user how to specify its location.
+  IF(CTK_FIND_REQUIRED)
+    MESSAGE(FATAL_ERROR ${CTK_DIR_MESSAGE})
+  ELSE(CTK_FIND_REQUIRED)
+    IF(NOT CTK_FIND_QUIETLY)
+      MESSAGE(STATUS ${CTK_DIR_MESSAGE})
+    ENDIF(NOT CTK_FIND_QUIETLY)
+  ENDIF(CTK_FIND_REQUIRED)
+ENDIF()