diff --git a/FWCore/CMakeLists.txt b/FWCore/CMakeLists.txt
index 07f309c5651a43f8fbaf587bd423d726d869cd31..0540c5e3bbfb41d38892b323246015148e13ad55 100644
--- a/FWCore/CMakeLists.txt
+++ b/FWCore/CMakeLists.txt
@@ -8,7 +8,7 @@ find_package(ROOT COMPONENTS RIO Tree)
 
 # this declaration will not be needed in the future
 gaudi_depends_on_subdirs(GaudiAlg GaudiKernel)
-gaudi_install_scripts()
+# gaudi_install_scripts()
 gaudi_install_python_modules()
 
 gaudi_add_library(FWCore
diff --git a/Simulation/DetSimCore/CMakeLists.txt b/Simulation/DetSimCore/CMakeLists.txt
index c222800f79ee562ce87a8078548ac4602720dfaa..e25301fad3e6d60a3648fe1f86a8ba1d7b35f03f 100644
--- a/Simulation/DetSimCore/CMakeLists.txt
+++ b/Simulation/DetSimCore/CMakeLists.txt
@@ -7,6 +7,7 @@ gaudi_depends_on_subdirs(
 
 find_package(Geant4 REQUIRED ui_all vis_all)
 include(${Geant4_USE_FILE})
+find_package(plcio)
 
 set(DetSimCore_srcs
     src/DetSimAlg.cpp
@@ -21,6 +22,6 @@ set(DetSimCore_srcs
 )
 
 gaudi_add_module(DetSimCore ${DetSimCore_srcs}
-    INCLUDE_DIRS DetSimInterface GaudiKernel Geant4
-    LINK_LIBRARIES DetSimInterface GaudiKernel Geant4
+    INCLUDE_DIRS DetSimInterface GaudiKernel Geant4 plcio
+    LINK_LIBRARIES DetSimInterface GaudiKernel Geant4 plcio
 )
diff --git a/Simulation/DetSimInterface/DetSimInterface/IG4PrimaryCnvTool.h b/Simulation/DetSimInterface/DetSimInterface/IG4PrimaryCnvTool.h
new file mode 100644
index 0000000000000000000000000000000000000000..83caf9d5b97d05c2826570c70c4c44ec16a5e785
--- /dev/null
+++ b/Simulation/DetSimInterface/DetSimInterface/IG4PrimaryCnvTool.h
@@ -0,0 +1,22 @@
+#ifndef IG4PrimaryCnvTool_h
+#define IG4PrimaryCnvTool_h
+
+// IG4PrimaryCnvTool:
+//     convert an event in other formats to an event in G4 format.
+// The G4Event object is managed by Geant4.
+
+#include "GaudiKernel/AlgTool.h"
+
+class G4Event;
+
+class IG4PrimaryCnvTool: virtual public IAlgTool {
+public:
+
+    DeclareInterfaceID(IG4PrimaryCnvTool, 0, 1);
+
+    virtual ~IG4PrimaryCnvTool() {};
+
+    virtual mutate(G4Event* anEvent) = 0;
+};
+
+#endif