make it compile

Author: aalkin

ALICE3/Core/CMakeLists.txt

@@ -12,6 +12,7 @@
 o2physics_add_library(ALICE3Core
                       SOURCES TOFResoALICE3.cxx
                               TrackUtilities.cxx
+			      FlatLutEntry.cxx
                               FlatTrackSmearer.cxx
                               GeometryContainer.cxx
                       PUBLIC_LINK_LIBRARIES O2::Framework
@@ -27,6 +28,7 @@ o2physics_target_root_dictionary(ALICE3Core
 o2physics_add_library(FastTracker
                       SOURCES FastTracker.cxx
                               DetLayer.cxx
+			      FlatLutEntry.cxx
 			      FlatLutWriter.cxx
                       PUBLIC_LINK_LIBRARIES O2::Framework
                                             O2Physics::AnalysisCore