diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0a892a02562ca0a8e3c7f571737eb77dc807e69..446eb0e360f80172c1615bffe8565325025431a8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.3 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
 set ( CMAKE_MODULE_PATH      ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake ) 
 #
 include ( DD4hepBuild )
@@ -20,7 +20,7 @@ option(DD4HEP_USE_GEANT4  "Enable the simulation part based on Geant4"    OFF)
 option(DD4HEP_USE_GEAR    "Build gear wrapper for backward compatibility" OFF)
 option(DD4HEP_USE_LCIO    "Build lcio extensions"    OFF)
 option(BUILD_TESTING      "Enable and build tests"   ON)
-option(DD4HEP_USE_CXX11   "Build DD4hep using c++11" OFF)
+option(DD4HEP_USE_CXX11   "Build DD4hep using c++11" ON)
 option(DD4HEP_USE_CXX14   "Build DD4hep using c++14" OFF)
 option(CMAKE_MACOSX_RPATH "Build with rpath on macos" ON)
 #
@@ -35,15 +35,13 @@ option(CMAKE_MACOSX_RPATH "Build with rpath on macos" ON)
 dd4hep_set_version(DD4hep MAJOR 0 MINOR 19 PATCH 0)
 dd4hep_configure_output( OUTPUT "${PROJECT_BINARY_DIR}" INSTALL "${CMAKE_INSTALL_PREFIX}" )
 #
+# Include ROOT
 #
-#  No Reflex library present for ROOT 6
-#
-find_package ( ROOT REQUIRED COMPONENTS Geom GenVector )
-if ( ${ROOT_VERSION_MAJOR} GREATER 5 )
-  set ( DD4HEP_USE_CXX11 ON ) 
-  message ( STATUS "ROOT_VERSION_MAJOR: ${ROOT_VERSION_MAJOR} --> Using GaudiPluginService..." )
-  add_subdirectory ( GaudiPluginService)  
-endif()
+find_package ( ROOT REQUIRED COMPONENTS Geom GenVector Eve GUI Graf3d Rgl)
+include(${ROOT_USE_FILE})
+message ( STATUS "ROOT_VERSION: ${ROOT_VERSION}" )
+add_subdirectory ( GaudiPluginService)
+
 #---------------------------------------------------------------------------------------------------
 #fg: moved to here from DD4hep.cmake to not force CMAKE_CXX_FLAGS upon dependent packages
 dd4hep_set_compiler_flags()
diff --git a/DDEve/CMakeLists.txt b/DDEve/CMakeLists.txt
index b91f81b8a57fa0f5c9608ef775f30b544a53c70e..21436416ee12d4f183de2aa38fbe4a430fc8bf15 100644
--- a/DDEve/CMakeLists.txt
+++ b/DDEve/CMakeLists.txt
@@ -10,7 +10,7 @@
 #
 #==========================================================================
 dd4hep_package(    DDEve
-  USES             DDCore [ROOT REQUIRED COMPONENTS TEve]
+  USES             DDCore [ROOT REQUIRED COMPONENTS Eve]
   INCLUDE_DIRS     include
   INSTALL_INCLUDES include/DDEve)
 #
diff --git a/UtilityApps/CMakeLists.txt b/UtilityApps/CMakeLists.txt
index 2876c182bfc0ed44e3c829ff0622bcdb46c02c1e..ebb8d45f57e3d994cd0de92173d7dfd3d9893bbb 100644
--- a/UtilityApps/CMakeLists.txt
+++ b/UtilityApps/CMakeLists.txt
@@ -36,27 +36,27 @@ dd4hep_add_executable(test_surfaces
   USES     DDRec DDTest
   OPTIONAL [LCIO REQUIRED SOURCES src/test_surfaces.cpp])
 #-----------------------------------------------------------------------------------
-dd4hep_add_dictionary( G__teve
+dd4hep_add_dictionary( G__eve
   SOURCES src/EvNavHandler.h
   LINKDEF src/LinkDef.h )
 
 #-----------------------------------------------------------------------------------
 if ( ${DD4HEP_USE_LCIO} )
-  dd4hep_add_dictionary( G__teve1
+  dd4hep_add_dictionary( G__eve1
     SOURCES src/EvNavHandler.h
     LINKDEF src/LinkDef.h )
   dd4hep_add_executable( teveLCIO
-    USES           [ROOT REQUIRED COMPONENTS TEve]
+    USES           [ROOT REQUIRED COMPONENTS Eve GUI Graf3d Rgl]
                    [LCIO REQUIRED]
                    DDRec
-    GENERATED      G__teve1.cxx
+    GENERATED      G__eve1.cxx
     SOURCES        src/teve_display.cpp src/next_event_lcio.cpp
  )
 endif()
 
 #-----------------------------------------------------------------------------------
-dd4hep_add_executable( teveDisplay 
-  USES           [ROOT REQUIRED COMPONENTS TEve] DDRec
-  GENERATED      G__teve.cxx
+dd4hep_add_executable( teveDisplay
+  USES           [ROOT REQUIRED COMPONENTS Eve GUI Graf3d Rgl] DDRec
+  GENERATED      G__eve.cxx
   SOURCES        src/teve_display.cpp src/next_event_dummy.cpp
 )
diff --git a/cmake/DD4hep.cmake b/cmake/DD4hep.cmake
index a7701280dd7ab080b9164123d2de26e1c65fcc88..3b2f625c0dfbc2bd7adfb3efb985685571b940b5 100644
--- a/cmake/DD4hep.cmake
+++ b/cmake/DD4hep.cmake
@@ -105,11 +105,7 @@ function(dd4hep_generate_rootmap_notapple library)
     SET ( DD4hep_DIR ${CMAKE_SOURCE_DIR} )
   endif()
   find_package(ROOT QUIET)
-if( ${ROOT_VERSION_MAJOR} GREATER 5 )
   set(rootmapfile ${CMAKE_SHARED_MODULE_PREFIX}${library}.components)
-else()
-  set(rootmapfile ${CMAKE_SHARED_MODULE_PREFIX}${library}.rootmap)
-endif()
 
   set(libname ${CMAKE_SHARED_MODULE_PREFIX}${library}${CMAKE_SHARED_LIBRARY_SUFFIX})
   #message(STATUS "DD4hep_DIR = ${DD4hep_DIR}" )
@@ -117,14 +113,14 @@ endif()
                      POST_BUILD
                      COMMAND ${CMAKE_COMMAND} -Dlibname=${libname} -Drootmapfile=${rootmapfile}
                              -Dgenmap_install_dir=${LIBRARY_OUTPUT_PATH}
-                             -DROOT_VERSION_MAJOR=${ROOT_VERSION_MAJOR}
+                             -DROOT_VERSION=${ROOT_VERSION}
                              -DDD4hep_DIR=${DD4hep_DIR}
                              -P ${DD4hep_DIR}/cmake/MakeRootMap.cmake)
 
   #add_custom_command(OUTPUT ${rootmapfile}
   #                   COMMAND ${CMAKE_COMMAND} -Dlibname=${libname} -Drootmapfile=${rootmapfile}
   #                           -Dgenmap_install_dir=${LIBRARY_OUTPUT_PATH}
-  #                           -DROOT_VERSION_MAJOR=${ROOT_VERSION_MAJOR}
+  #                           -DROOT_VERSION=${ROOT_VERSION}
   #                           -DDD4hep_DIR=${DD4hep_DIR}
   #                           -P ${DD4hep_DIR}/cmake/MakeRootMap.cmake
   #                   DEPENDS ${library})
diff --git a/cmake/DD4hepBuild.cmake b/cmake/DD4hepBuild.cmake
index ff006d03c2cf0211f8c4e99cfa526e9b8d3a321d..bed0ba5ab7e06cb83512ee47f4b31980750cc737 100644
--- a/cmake/DD4hepBuild.cmake
+++ b/cmake/DD4hepBuild.cmake
@@ -1266,24 +1266,15 @@ function( dd4hep_add_dictionary dictionary )
     dd4hep_debug ( "${tag}  Unparsed:'${ARG_UNPARSED_ARGUMENTS}'" ) 
     dd4hep_debug ( "${tag}  Sources: '${CMAKE_CURRENT_SOURCE_DIR}'" ) 
     #
-    if ( ${ROOT_VERSION_MAJOR} GREATER 5 )
-      ## ${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary}_rdict.pcm
-      add_custom_command(OUTPUT ${dictionary}.cxx
-        COMMAND ${ROOTCLING_EXECUTABLE} -cint -f ${dictionary}.cxx 
-        -s ${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary} -inlineInputHeader -c -p ${ARG_OPTIONS} ${comp_defs} -std=c++${DD4HEP_USE_STDCXX} ${inc_dirs} ${headers} ${linkdefs} 
-        DEPENDS ${headers} ${linkdefs} )
-      #  Install the binary to the destination directory
-      #set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary}_rdict.pcm PROPERTIES GENERATED TRUE )
-      install(FILES ${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary}_rdict.pcm DESTINATION lib)
-      #set_source_files_properties( ${dictionary}.h ${dictionary}.cxx PROPERTIES GENERATED TRUE )
-    else()
-      add_custom_command(OUTPUT ${dictionary}.h ${dictionary}.cxx
-        COMMAND ${ROOTCINT_EXECUTABLE} -cint -f ${dictionary}.cxx 
-        -s ${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary} -c -p ${ARG_OPTIONS} ${comp_defs} ${inc_dirs} ${headers} ${linkdefs} 
-        DEPENDS ${headers} ${linkdefs} )
-      #set_source_files_properties( ${dictionary}.h ${dictionary}.cxx PROPERTIES GENERATED TRUE )
+    add_custom_command(OUTPUT ${dictionary}.cxx
+      COMMAND ${ROOT_rootcling_CMD} -cint -f ${dictionary}.cxx
+      -s ${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary} -inlineInputHeader -c -p ${ARG_OPTIONS} ${comp_defs} -std=c++${DD4HEP_USE_STDCXX} ${inc_dirs} ${headers} ${linkdefs}
+      DEPENDS ${headers} ${linkdefs} )
+    #  Install the binary to the destination directory
+    #set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary}_rdict.pcm PROPERTIES GENERATED TRUE )
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/../lib/${dictionary}_rdict.pcm DESTINATION lib)
+    #set_source_files_properties( ${dictionary}.h ${dictionary}.cxx PROPERTIES GENERATED TRUE )
     endif()
-  endif()
 endfunction()
 
 #---------------------------------------------------------------------------------------------------
diff --git a/cmake/DD4hepConfig.cmake.in b/cmake/DD4hepConfig.cmake.in
index 4b7697184b7261d72f853b29bda243224c53418b..ce108159ea2431c87712c17930f37c5ce52796b9 100644
--- a/cmake/DD4hepConfig.cmake.in
+++ b/cmake/DD4hepConfig.cmake.in
@@ -27,7 +27,7 @@ set ( GEANT4_USE_CLHEP   "@GEANT4_USE_CLHEP@" )
 
 set ( ROOTSYS            "$ENV{ROOTSYS}" )
 set ( ROOT_DIR           "$ENV{ROOTSYS}/cmake" )
-set ( ROOT_VERSION_MAJOR "@ROOT_VERSION_MAJOR@" )
+set ( ROOT_VERSION       "@ROOT_VERSION@" )
 
 include ( ${DD4hep_DIR}/cmake/DD4hep.cmake )
 
diff --git a/cmake/MakeRootMap.cmake b/cmake/MakeRootMap.cmake
index 452689a081ef2546f9791f662463a84a34011ae6..5b8fc9637d9ffe5ec96d147b4f0f65b5b8a7e902 100644
--- a/cmake/MakeRootMap.cmake
+++ b/cmake/MakeRootMap.cmake
@@ -1,11 +1,10 @@
-message(STATUS " *** ROOT_genmap[Root version: ${ROOT_VERSION_MAJOR}]: Generate map for ${libname} ..." )
-if( ${ROOT_VERSION_MAJOR} GREATER 5 )
+message(STATUS " *** ROOT_genmap[Root version: ${ROOT_VERSION}]: Generate map for ${libname} ..." )
   #
   #  Running listcomponents from Gaudi
   #   
   FIND_PROGRAM( ROOT_genmap_CMD listcomponents PATHS ${genmap_install_dir}/../bin ${DD4hep_DIR}/bin )
   ###MESSAGE( STATUS " *** MakeRootMap ${genmap_install_dir}/../bin $ENV{DD4hep_DIR}/bin ${DD4hep_DIR}" )
-  MESSAGE( STATUS " *** MakeRootMap[${ROOT_VERSION_MAJOR}].cmake run command : ${ROOT_genmap_CMD} -o ${rootmapfile} ${libname} 
+  MESSAGE( STATUS " *** MakeRootMap[${ROOT_VERSION}].cmake run command : ${ROOT_genmap_CMD} -o ${rootmapfile} ${libname}
                  WORKING_DIRECTORY ${genmap_install_dir} "
     ) 
 
@@ -20,24 +19,4 @@ if( ${ROOT_VERSION_MAJOR} GREATER 5 )
     WORKING_DIRECTORY ${genmap_install_dir}
     )
 
-else()
-  #
-  #  Running genmap from ROOT 5
-  #
-  FIND_PROGRAM( ROOT_genmap_CMD genmap PATHS $ENV{ROOTSYS}/bin $ENV{PATH} )
-  MESSAGE( STATUS " *** MakeRootMap[${ROOT_VERSION_MAJOR}].cmake run command : ${ROOT_genmap_CMD} -debug -i ${libname} -o ${rootmapfile}
-                 WORKING_DIRECTORY ${genmap_install_dir} "
-    )
-
-  if(APPLE)
-    SET ( ENV{DYLD_LIBRARY_PATH} ./:$ENV{DYLD_LIBRARY_PATH}:$ENV{DD4HEP_LIBRARY_PATH}:$ENV{ROOTSYS}/lib:${genmap_install_dir} )
-  else()
-    SET ( ENV{LD_LIBRARY_PATH} ./:$ENV{LD_LIBRARY_PATH}:$ENV{ROOTSYS}/lib:${genmap_install_dir} )
-  endif()
-
-  EXECUTE_PROCESS( COMMAND 
-    ${ROOT_genmap_CMD} -debug -i ${libname} -o ${rootmapfile}
-    WORKING_DIRECTORY ${genmap_install_dir}
-    )
 
-endif()