COMP: OTB_INSTALL_PACKAGE_DIR has no reason to be in cache while others not

CMakeLists.txt

@@ -173,8 +173,7 @@ IF(NOT OTB_INSTALL_INCLUDE_DIR)
 ENDIF(NOT OTB_INSTALL_INCLUDE_DIR)
 
 IF(NOT OTB_INSTALL_PACKAGE_DIR)
-  SET(OTB_INSTALL_PACKAGE_DIR ${OTB_INSTALL_LIB_DIR}
-    CACHE INTERNAL "")
+  SET(OTB_INSTALL_PACKAGE_DIR ${OTB_INSTALL_LIB_DIR})
 ENDIF(NOT OTB_INSTALL_PACKAGE_DIR)
 
 IF(NOT OTB_INSTALL_NO_DEVELOPMENT)