diff --git a/3d-viewer/3d_rendering/3d_render_raytracing/cmaterial.h b/3d-viewer/3d_rendering/3d_render_raytracing/cmaterial.h
index 5a88c98a34..aac1ef971b 100644
--- a/3d-viewer/3d_rendering/3d_render_raytracing/cmaterial.h
+++ b/3d-viewer/3d_rendering/3d_render_raytracing/cmaterial.h
@@ -40,6 +40,10 @@ class  CPROCEDURALGENERATOR
 public:
     CPROCEDURALGENERATOR();
 
+    virtual ~CPROCEDURALGENERATOR()
+    {
+    }
+
     /**
      * @brief Generate - Generates a 3D vector based on the ray and
      * hit information depending on the implementation
@@ -62,6 +66,10 @@ public:
     CBOARDNORMAL() : CPROCEDURALGENERATOR() { m_scale = 1.0f; }
     CBOARDNORMAL( float aScale );
 
+    virtual ~CBOARDNORMAL()
+    {
+    }
+
     // Imported from CPROCEDURALGENERATOR
     SFVEC3F Generate( const RAY &aRay,
                       const HITINFO &aHitInfo ) const override;
@@ -81,6 +89,10 @@ public:
 
     CCOPPERNORMAL( float aScale, const CPROCEDURALGENERATOR *aBoardNormalGenerator );
 
+    virtual ~CCOPPERNORMAL()
+    {
+    }
+
     // Imported from CPROCEDURALGENERATOR
     SFVEC3F Generate( const RAY &aRay,
                       const HITINFO &aHitInfo ) const override;
@@ -97,6 +109,10 @@ public:
     CSOLDERMASKNORMAL() : CPROCEDURALGENERATOR() { m_copper_normal_generator = NULL; }
     CSOLDERMASKNORMAL( const CPROCEDURALGENERATOR *aCopperNormalGenerator );
 
+    virtual ~CSOLDERMASKNORMAL()
+    {
+    }
+
     // Imported from CPROCEDURALGENERATOR
     SFVEC3F Generate( const RAY &aRay,
                       const HITINFO &aHitInfo ) const override;
@@ -116,6 +132,10 @@ public:
 
     CPLASTICNORMAL( float aScale );
 
+    virtual ~CPLASTICNORMAL()
+    {
+    }
+
     // Imported from CPROCEDURALGENERATOR
     SFVEC3F Generate( const RAY &aRay,
                       const HITINFO &aHitInfo ) const override;
@@ -136,6 +156,10 @@ public:
 
     CPLASTICSHINENORMAL( float aScale );
 
+    virtual ~CPLASTICSHINENORMAL()
+    {
+    }
+
     // Imported from CPROCEDURALGENERATOR
     SFVEC3F Generate( const RAY &aRay,
                       const HITINFO &aHitInfo ) const override;
@@ -155,6 +179,10 @@ public:
 
     CMETALBRUSHEDNORMAL( float aScale );
 
+    virtual ~CMETALBRUSHEDNORMAL()
+    {
+    }
+
     // Imported from CPROCEDURALGENERATOR
     SFVEC3F Generate( const RAY &aRay,
                       const HITINFO &aHitInfo ) const override;
diff --git a/3d-viewer/3d_rendering/ccamera.h b/3d-viewer/3d_rendering/ccamera.h
index 713222e7b3..3eea7a8fcd 100644
--- a/3d-viewer/3d_rendering/ccamera.h
+++ b/3d-viewer/3d_rendering/ccamera.h
@@ -89,6 +89,10 @@ class CCAMERA
      */
     explicit CCAMERA( float aRangeScale );
 
+    virtual ~CCAMERA()
+    {
+    }
+
 
     /**
      *  Function GetRotationMatrix
diff --git a/3d-viewer/3d_rendering/ctrack_ball.h b/3d-viewer/3d_rendering/ctrack_ball.h
index 5b81f5d569..059b7d08aa 100644
--- a/3d-viewer/3d_rendering/ctrack_ball.h
+++ b/3d-viewer/3d_rendering/ctrack_ball.h
@@ -40,6 +40,10 @@ class CTRACK_BALL : public CCAMERA
 
     explicit CTRACK_BALL( float aRangeScale );
 
+    virtual ~CTRACK_BALL()
+    {
+    }
+
     void Drag( const wxPoint &aNewMousePosition ) override;
 
     void Pan( const wxPoint &aNewMousePosition ) override;
diff --git a/eeschema/project_rescue.h b/eeschema/project_rescue.h
index fdaa82d434..3633484760 100644
--- a/eeschema/project_rescue.h
+++ b/eeschema/project_rescue.h
@@ -233,6 +233,10 @@ public:
     RESCUER( PROJECT& aProject, SCH_SHEET_PATH* aCurrentSheet,
              EDA_DRAW_PANEL_GAL::GAL_TYPE aGalBackeEndType );
 
+    virtual ~RESCUER()
+    {
+    }
+
     /**
      * Writes out the rescue library. Called after successful PerformAction()s. If this fails,
      * undo the actions.
@@ -316,6 +320,10 @@ public:
     {
     }
 
+    virtual ~LEGACY_RESCUER()
+    {
+    }
+
     virtual void FindCandidates() override;
 
     virtual void InvokeDialog( wxWindow* aParent, bool aAskShowAgain ) override;
@@ -339,6 +347,10 @@ public:
     SYMBOL_LIB_TABLE_RESCUER( PROJECT& aProject, SCH_SHEET_PATH* aCurrentSheet,
                               EDA_DRAW_PANEL_GAL::GAL_TYPE aGalBackeEndType );
 
+    virtual ~SYMBOL_LIB_TABLE_RESCUER()
+    {
+    }
+
     virtual void FindCandidates() override;
 
     virtual void InvokeDialog( wxWindow* aParent, bool aAskShowAgain ) override;
diff --git a/include/board_printout.h b/include/board_printout.h
index 1ea62a3327..020c58115b 100644
--- a/include/board_printout.h
+++ b/include/board_printout.h
@@ -49,6 +49,10 @@ struct BOARD_PRINTOUT_SETTINGS : public PRINTOUT_SETTINGS
 {
     BOARD_PRINTOUT_SETTINGS( const PAGE_INFO& aPageInfo );
 
+    virtual ~BOARD_PRINTOUT_SETTINGS()
+    {
+    }
+
     LSET m_layerSet;                   ///< Layers to print
     bool m_mirror;                      ///< Print mirrored
 
diff --git a/include/lib_tree_item.h b/include/lib_tree_item.h
index 097d25765e..3ceebbfcff 100644
--- a/include/lib_tree_item.h
+++ b/include/lib_tree_item.h
@@ -39,6 +39,10 @@
 class APIEXPORT LIB_TREE_ITEM
 {
 public:
+    virtual ~LIB_TREE_ITEM()
+    {
+    }
+
     virtual LIB_ID GetLibId() const = 0;
 
     virtual wxString GetName() const = 0;
diff --git a/include/preview_items/polygon_geom_manager.h b/include/preview_items/polygon_geom_manager.h
index e8fa42950b..9a9a21ffa4 100644
--- a/include/preview_items/polygon_geom_manager.h
+++ b/include/preview_items/polygon_geom_manager.h
@@ -58,6 +58,10 @@ public:
 
         ///> Called when the polygon is complete
         virtual void OnComplete( const POLYGON_GEOM_MANAGER& aMgr ) = 0;
+
+        virtual ~CLIENT()
+        {
+        }
     };
 
     /**
diff --git a/include/printout.h b/include/printout.h
index 7fae8b2458..06d9d748c8 100644
--- a/include/printout.h
+++ b/include/printout.h
@@ -38,6 +38,10 @@ struct PRINTOUT_SETTINGS
         m_pageCount  = 0;
     }
 
+    virtual ~PRINTOUT_SETTINGS()
+    {
+    }
+
     virtual void Save( wxConfigBase* aConfig );
     virtual void Load( wxConfigBase* aConfig );
 
diff --git a/include/project.h b/include/project.h
index 67533c285f..8cdbaca110 100644
--- a/include/project.h
+++ b/include/project.h
@@ -74,7 +74,7 @@ public:
     };
 
     PROJECT();
-    ~PROJECT();
+    VTBL_ENTRY ~PROJECT();
 
     //-----<Cross Module API>----------------------------------------------------
 
diff --git a/include/reporter.h b/include/reporter.h
index 7fcf1b11a5..b5d97545df 100644
--- a/include/reporter.h
+++ b/include/reporter.h
@@ -134,6 +134,10 @@ public:
      * Returns true if the reporter client is non-empty.
      */
     virtual bool HasMessage() const = 0;
+
+    virtual ~REPORTER()
+    {
+    }
 };
 
 
@@ -152,6 +156,10 @@ public:
     {
     }
 
+    virtual ~WX_TEXT_CTRL_REPORTER()
+    {
+    }
+
     REPORTER& Report( const wxString& aText, SEVERITY aSeverity = RPT_UNDEFINED ) override;
 
     bool HasMessage() const override;
@@ -173,6 +181,10 @@ public:
     {
     }
 
+    virtual ~WX_STRING_REPORTER()
+    {
+    }
+
     REPORTER& Report( const wxString& aText, SEVERITY aSeverity = RPT_UNDEFINED ) override;
 
     bool HasMessage() const override;
@@ -194,6 +206,10 @@ public:
     {
     }
 
+    virtual ~WX_HTML_PANEL_REPORTER()
+    {
+    }
+
     REPORTER& Report( const wxString& aText, SEVERITY aSeverity = RPT_UNDEFINED ) override;
 
     REPORTER& ReportTail( const wxString& aText, SEVERITY aSeverity = RPT_UNDEFINED ) override;
@@ -216,6 +232,10 @@ public:
     {
     }
 
+    virtual ~NULL_REPORTER()
+    {
+    }
+
     static REPORTER& GetInstance();
 
     REPORTER& Report( const wxString& aText, SEVERITY aSeverity = RPT_UNDEFINED ) override;
@@ -235,6 +255,10 @@ public:
     {
     }
 
+    virtual ~STDOUT_REPORTER()
+    {
+    }
+
     static REPORTER& GetInstance();
 
     REPORTER& Report( const wxString& aText, SEVERITY aSeverity = RPT_UNDEFINED ) override;
diff --git a/include/widgets/layer_box_selector.h b/include/widgets/layer_box_selector.h
index a1190d88eb..5a12fa7fc1 100644
--- a/include/widgets/layer_box_selector.h
+++ b/include/widgets/layer_box_selector.h
@@ -43,6 +43,10 @@ protected:
 public:
     LAYER_SELECTOR();
 
+    virtual ~LAYER_SELECTOR()
+    {
+    }
+
     // Returns a color index from the layer id
     // Virtual function because GerbView uses its own functions in a derived class
     virtual COLOR4D GetLayerColor( LAYER_NUM aLayer ) const = 0;
diff --git a/include/widgets/progress_reporter.h b/include/widgets/progress_reporter.h
index 55f9ef7554..59e333a7a8 100644
--- a/include/widgets/progress_reporter.h
+++ b/include/widgets/progress_reporter.h
@@ -44,6 +44,10 @@ class PROGRESS_REPORTER
         PROGRESS_REPORTER( int aNumPhases );
         PROGRESS_REPORTER( const PROGRESS_REPORTER& ) = delete;
 
+        virtual ~PROGRESS_REPORTER()
+        {
+        }
+
         /**
          * initialize the aPhase virtual zone of the dialog progress bar
          */
diff --git a/pcbnew/pcad2kicadpcb_plugin/pcb_callbacks.h b/pcbnew/pcad2kicadpcb_plugin/pcb_callbacks.h
index 91866ccb26..3706f0f58b 100644
--- a/pcbnew/pcad2kicadpcb_plugin/pcb_callbacks.h
+++ b/pcbnew/pcad2kicadpcb_plugin/pcb_callbacks.h
@@ -53,7 +53,11 @@ namespace PCAD2KICAD
     class PCB_CALLBACKS
     {
     public:
-        virtual PCB_LAYER_ID      GetKiCadLayer( int aPCadLayer ) = 0;
+        virtual ~PCB_CALLBACKS()
+        {
+        }
+
+        virtual PCB_LAYER_ID  GetKiCadLayer( int aPCadLayer ) = 0;
         virtual LAYER_TYPE_T  GetLayerType( int aPCadLayer ) = 0;
         virtual wxString      GetLayerNetNameRef( int aPCadLayer ) = 0;
         virtual int           GetNewTimestamp() = 0;
diff --git a/pcbnew/router/pns_node.cpp b/pcbnew/router/pns_node.cpp
index 4f7ad13135..512e26afbf 100644
--- a/pcbnew/router/pns_node.cpp
+++ b/pcbnew/router/pns_node.cpp
@@ -210,6 +210,10 @@ struct NODE::DEFAULT_OBSTACLE_VISITOR : public OBSTACLE_VISITOR
         }
     }
 
+    virtual ~DEFAULT_OBSTACLE_VISITOR()
+    {
+    }
+
     void SetCountLimit( int aLimit )
     {
         m_limitCount = aLimit;
@@ -483,6 +487,10 @@ struct HIT_VISITOR : public OBSTACLE_VISITOR
         m_items( aTab ), m_point( aPoint )
     {}
 
+    virtual ~HIT_VISITOR()
+    {
+    }
+
     bool operator()( ITEM* aItem ) override
     {
         SHAPE_CIRCLE cp( m_point, 0 );
diff --git a/pcbnew/router/pns_node.h b/pcbnew/router/pns_node.h
index 12c1243579..4ee01f94c2 100644
--- a/pcbnew/router/pns_node.h
+++ b/pcbnew/router/pns_node.h
@@ -104,6 +104,10 @@ public:
 
     OBSTACLE_VISITOR( const ITEM* aItem );
 
+    virtual ~OBSTACLE_VISITOR()
+    {
+    }
+
     void SetWorld( const NODE* aNode, const NODE* aOverride = NULL );
 
     virtual bool operator()( ITEM* aCandidate ) = 0;
diff --git a/pcbnew/tools/drawing_tool.cpp b/pcbnew/tools/drawing_tool.cpp
index cfd3e15409..e7fcfb527c 100644
--- a/pcbnew/tools/drawing_tool.cpp
+++ b/pcbnew/tools/drawing_tool.cpp
@@ -1593,6 +1593,10 @@ int DRAWING_TOOL::DrawVia( const TOOL_EVENT& aEvent )
         VIA_PLACER( PCB_BASE_EDIT_FRAME* aFrame ) : m_gridHelper( aFrame )
         {}
 
+        virtual ~VIA_PLACER()
+        {
+        }
+
         TRACK* findTrack( VIA* aVia )
         {
             const LSET lset = aVia->GetLayerSet();
diff --git a/pcbnew/tools/footprint_editor_tools.cpp b/pcbnew/tools/footprint_editor_tools.cpp
index 5abea8f88f..7e267c064c 100644
--- a/pcbnew/tools/footprint_editor_tools.cpp
+++ b/pcbnew/tools/footprint_editor_tools.cpp
@@ -290,6 +290,10 @@ int MODULE_EDITOR_TOOLS::PlacePad( const TOOL_EVENT& aEvent )
 
     struct PAD_PLACER : public INTERACTIVE_PLACER_BASE
     {
+        virtual ~PAD_PLACER()
+        {
+        }
+
         std::unique_ptr<BOARD_ITEM> CreateItem() override
         {
             D_PAD* pad = new D_PAD( m_board->GetFirstModule() );
diff --git a/pcbnew/tools/microwave_tool.cpp b/pcbnew/tools/microwave_tool.cpp
index f309885839..7ddcc8aec4 100644
--- a/pcbnew/tools/microwave_tool.cpp
+++ b/pcbnew/tools/microwave_tool.cpp
@@ -65,6 +65,10 @@ int MICROWAVE_TOOL::addMicrowaveFootprint( const TOOL_EVENT& aEvent )
                 m_itemType( aType )
         { };
 
+        virtual ~MICROWAVE_PLACER()
+        {
+        }
+
         std::unique_ptr<BOARD_ITEM> CreateItem() override
         {
             switch( m_itemType )
diff --git a/pcbnew/tools/pcb_tool_base.h b/pcbnew/tools/pcb_tool_base.h
index a89a11744e..223ef96d52 100644
--- a/pcbnew/tools/pcb_tool_base.h
+++ b/pcbnew/tools/pcb_tool_base.h
@@ -51,6 +51,10 @@ class PCBNEW_SELECTION;
 
 struct INTERACTIVE_PLACER_BASE
 {
+    virtual ~INTERACTIVE_PLACER_BASE()
+    {
+    }
+
     virtual std::unique_ptr<BOARD_ITEM> CreateItem() = 0;
     virtual void SnapItem( BOARD_ITEM *aItem );
     virtual bool PlaceItem( BOARD_ITEM *aItem, BOARD_COMMIT& aCommit );
@@ -70,7 +74,7 @@ public:
      * Creates a tool with given id & name. The name must be unique. */
     PCB_TOOL_BASE( TOOL_ID aId, const std::string& aName ) :
         TOOL_INTERACTIVE ( aId, aName ),
-        m_editModules( false ) 
+        m_editModules( false )
     {};
 
     /**
@@ -79,7 +83,7 @@ public:
      * Creates a tool with given name. The name must be unique. */
     PCB_TOOL_BASE( const std::string& aName ) :
         TOOL_INTERACTIVE ( aName ),
-        m_editModules( false ) 
+        m_editModules( false )
     {};
 
     virtual ~PCB_TOOL_BASE() {};
@@ -133,28 +137,28 @@ protected:
     virtual void setTransitions() override;
 
 
-    KIGFX::PCB_VIEW* view() const 
-    { 
-        return static_cast<KIGFX::PCB_VIEW*>( getView() ); 
+    KIGFX::PCB_VIEW* view() const
+    {
+        return static_cast<KIGFX::PCB_VIEW*>( getView() );
     }
-    
-    KIGFX::VIEW_CONTROLS* controls() const 
-    { 
-        return getViewControls(); 
+
+    KIGFX::VIEW_CONTROLS* controls() const
+    {
+        return getViewControls();
     }
-    
-    PCB_BASE_EDIT_FRAME* frame() const 
-    { 
+
+    PCB_BASE_EDIT_FRAME* frame() const
+    {
         return getEditFrame<PCB_BASE_EDIT_FRAME>();
     }
-    
+
     BOARD* board() const { return getModel<BOARD>(); }
-    
+
     MODULE* module() const
     {
         return board()->GetFirstModule();
     }
-    
+
     const PCB_DISPLAY_OPTIONS& displayOptions() const;
     PCB_DRAW_PANEL_GAL* canvas() const;
     const PCBNEW_SELECTION& selection() const;
diff --git a/pcbnew/tools/zone_create_helper.h b/pcbnew/tools/zone_create_helper.h
index b996c17349..3bebfed65d 100644
--- a/pcbnew/tools/zone_create_helper.h
+++ b/pcbnew/tools/zone_create_helper.h
@@ -71,7 +71,7 @@ public:
      */
     ZONE_CREATE_HELPER( DRAWING_TOOL& aTool, PARAMS& aParams );
 
-    ~ZONE_CREATE_HELPER();
+    virtual ~ZONE_CREATE_HELPER();
 
     /*
      * Interface for receiving POLYGON_GEOM_MANAGER update
diff --git a/qa/pcbnew_tools/tools/drc_tool/drc_tool.cpp b/qa/pcbnew_tools/tools/drc_tool/drc_tool.cpp
index fdfb1dfdcc..57576926df 100644
--- a/qa/pcbnew_tools/tools/drc_tool/drc_tool.cpp
+++ b/qa/pcbnew_tools/tools/drc_tool/drc_tool.cpp
@@ -64,6 +64,10 @@ public:
     {
     }
 
+    virtual ~DRC_RUNNER()
+    {
+    }
+
     void Execute( BOARD& aBoard )
     {
         if( m_exec_context.m_verbose )
@@ -151,6 +155,10 @@ public:
     {
     }
 
+    virtual ~DRC_COURTYARD_OVERLAP_RUNNER()
+    {
+    }
+
 private:
     std::string getRunnerIntro() const override
     {
@@ -184,6 +192,10 @@ public:
     {
     }
 
+    virtual ~DRC_COURTYARD_MISSING_RUNNER()
+    {
+    }
+
 private:
     std::string getRunnerIntro() const override
     {