+mark_as_advanced(CLITK_EXPERIMENTAL)
+option(CLITK_MEMORY_INFO "Enable memory info (need libstatgrab >= v.0.90)" OFF)
+mark_as_advanced(CLITK_MEMORY_INFO)
+option(CLITK_EXTERNAL_GDCM "Enable features using external GDCM" OFF)
+mark_as_advanced(CLITK_EXTERNAL_GDCM)