diff --git a/src/Mod/Part/App/ArcOfCirclePyImp.cpp b/src/Mod/Part/App/ArcOfCirclePyImp.cpp
index 5190d75fe..760d75696 100644
--- a/src/Mod/Part/App/ArcOfCirclePyImp.cpp
+++ b/src/Mod/Part/App/ArcOfCirclePyImp.cpp
@@ -75,7 +75,7 @@ PyObject *ArcOfCirclePy::PyMake(struct _typeobject *, PyObject *, PyObject *)  /
 }
 
 // constructor method
-int ArcOfCirclePy::PyInit(PyObject* args, PyObject* kwds)
+int ArcOfCirclePy::PyInit(PyObject* args, PyObject* /*kwds*/)
 {
     PyObject* o;
     double u1, u2;
@@ -212,12 +212,12 @@ Py::Object ArcOfCirclePy::getCircle(void) const
     return Py::Object(new CirclePy(new GeomCircle(circle)), true);
 }
 
-PyObject *ArcOfCirclePy::getCustomAttributes(const char* attr) const
+PyObject *ArcOfCirclePy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int ArcOfCirclePy::setCustomAttributes(const char* attr, PyObject *obj)
+int ArcOfCirclePy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/ArcOfEllipsePyImp.cpp b/src/Mod/Part/App/ArcOfEllipsePyImp.cpp
index 341f9e794..a03242817 100644
--- a/src/Mod/Part/App/ArcOfEllipsePyImp.cpp
+++ b/src/Mod/Part/App/ArcOfEllipsePyImp.cpp
@@ -86,7 +86,7 @@ PyObject *ArcOfEllipsePy::PyMake(struct _typeobject *, PyObject *, PyObject *)
 }
 
 // constructor method
-int ArcOfEllipsePy::PyInit(PyObject* args, PyObject* kwds)
+int ArcOfEllipsePy::PyInit(PyObject* args, PyObject* /*kwds*/)
 {
     PyObject* o;
     double u1, u2;
@@ -222,12 +222,12 @@ Py::Object ArcOfEllipsePy::getEllipse(void) const
     return Py::Object(new EllipsePy(new GeomEllipse(ellipse)), true);
 }
 
-PyObject *ArcOfEllipsePy::getCustomAttributes(const char* attr) const
+PyObject *ArcOfEllipsePy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int ArcOfEllipsePy::setCustomAttributes(const char* attr, PyObject *obj)
+int ArcOfEllipsePy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/ArcOfHyperbolaPyImp.cpp b/src/Mod/Part/App/ArcOfHyperbolaPyImp.cpp
index 2005c4005..71de3b2a7 100644
--- a/src/Mod/Part/App/ArcOfHyperbolaPyImp.cpp
+++ b/src/Mod/Part/App/ArcOfHyperbolaPyImp.cpp
@@ -86,7 +86,7 @@ PyObject *ArcOfHyperbolaPy::PyMake(struct _typeobject *, PyObject *, PyObject *)
 }
 
 // constructor method
-int ArcOfHyperbolaPy::PyInit(PyObject* args, PyObject* kwds)
+int ArcOfHyperbolaPy::PyInit(PyObject* args, PyObject* /*kwds*/)
 {
     PyObject* o;
     double u1, u2;
@@ -222,12 +222,12 @@ Py::Object ArcOfHyperbolaPy::getHyperbola(void) const
     return Py::Object(new HyperbolaPy(new GeomHyperbola(hyperbola)), true);
 }
 
-PyObject *ArcOfHyperbolaPy::getCustomAttributes(const char* attr) const
+PyObject *ArcOfHyperbolaPy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int ArcOfHyperbolaPy::setCustomAttributes(const char* attr, PyObject *obj)
+int ArcOfHyperbolaPy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/ArcOfParabolaPyImp.cpp b/src/Mod/Part/App/ArcOfParabolaPyImp.cpp
index bf887a7e3..92f6e9b8e 100644
--- a/src/Mod/Part/App/ArcOfParabolaPyImp.cpp
+++ b/src/Mod/Part/App/ArcOfParabolaPyImp.cpp
@@ -84,7 +84,7 @@ PyObject *ArcOfParabolaPy::PyMake(struct _typeobject *, PyObject *, PyObject *)
 }
 
 // constructor method
-int ArcOfParabolaPy::PyInit(PyObject* args, PyObject* kwds)
+int ArcOfParabolaPy::PyInit(PyObject* args, PyObject* /*kwds*/)
 {
     PyObject* o;
     double u1, u2;
@@ -210,12 +210,12 @@ Py::Object ArcOfParabolaPy::getParabola(void) const
     return Py::Object(new ParabolaPy(new GeomParabola(parabola)), true);
 }
 
-PyObject *ArcOfParabolaPy::getCustomAttributes(const char* attr) const
+PyObject *ArcOfParabolaPy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int ArcOfParabolaPy::setCustomAttributes(const char* attr, PyObject *obj)
+int ArcOfParabolaPy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/BRepOffsetAPI_MakePipeShellPyImp.cpp b/src/Mod/Part/App/BRepOffsetAPI_MakePipeShellPyImp.cpp
index 9ad72cd0c..949f299b6 100644
--- a/src/Mod/Part/App/BRepOffsetAPI_MakePipeShellPyImp.cpp
+++ b/src/Mod/Part/App/BRepOffsetAPI_MakePipeShellPyImp.cpp
@@ -277,12 +277,12 @@ PyObject* BRepOffsetAPI_MakePipeShellPy::setTransitionMode(PyObject *args)
     Py_Return;
 }
 
-PyObject *BRepOffsetAPI_MakePipeShellPy::getCustomAttributes(const char* attr) const
+PyObject *BRepOffsetAPI_MakePipeShellPy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int BRepOffsetAPI_MakePipeShellPy::setCustomAttributes(const char* attr, PyObject *obj)
+int BRepOffsetAPI_MakePipeShellPy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/BodyBase.cpp b/src/Mod/Part/App/BodyBase.cpp
index 7c14273fb..15a32f003 100644
--- a/src/Mod/Part/App/BodyBase.cpp
+++ b/src/Mod/Part/App/BodyBase.cpp
@@ -44,7 +44,7 @@ BodyBase::BodyBase()
     ADD_PROPERTY(BaseFeature , (0) );
 }
 
-const bool BodyBase::hasFeature(const App::DocumentObject* f) const
+bool BodyBase::hasFeature(const App::DocumentObject* f) const
 {
     const std::vector<App::DocumentObject*> &features = Model.getValues();
     return f == BaseFeature.getValue() || std::find(features.begin(), features.end(), f) != features.end();
@@ -65,7 +65,7 @@ BodyBase* BodyBase::findBodyOf(const App::DocumentObject* f)
     return NULL;
 }
 
-const bool BodyBase::isAfter(const App::DocumentObject *feature, const App::DocumentObject* target) const {
+bool BodyBase::isAfter(const App::DocumentObject *feature, const App::DocumentObject* target) const {
     assert (feature);
 
     if (feature == target) {
diff --git a/src/Mod/Part/App/BodyBase.h b/src/Mod/Part/App/BodyBase.h
index 06482a769..3379344ee 100644
--- a/src/Mod/Part/App/BodyBase.h
+++ b/src/Mod/Part/App/BodyBase.h
@@ -71,13 +71,13 @@ public:
 
     // These methods are located here to avoid a dependency of ViewProviderSketchObject on PartDesign
     /// Remove the feature from the body
-    virtual void removeFeature(App::DocumentObject* feature){}
+    virtual void removeFeature(App::DocumentObject*){}
 
     /// Return true if the feature belongs to this body or either the body is based on the feature
-    const bool hasFeature(const App::DocumentObject *f) const;
+    bool hasFeature(const App::DocumentObject *f) const;
 
     /// Return true if the feature belongs to the body and is located after the target
-    const bool isAfter(const App::DocumentObject *feature, const App::DocumentObject *target) const;
+    bool isAfter(const App::DocumentObject *feature, const App::DocumentObject *target) const;
 
     /**
      * Return the body which this feature belongs too, or NULL.
diff --git a/src/Mod/Part/App/CirclePyImp.cpp b/src/Mod/Part/App/CirclePyImp.cpp
index 33ca37784..298836f5c 100644
--- a/src/Mod/Part/App/CirclePyImp.cpp
+++ b/src/Mod/Part/App/CirclePyImp.cpp
@@ -306,12 +306,12 @@ void  CirclePy::setYAxis(Py::Object arg)
     }
 }
 
-PyObject *CirclePy::getCustomAttributes(const char* attr) const
+PyObject *CirclePy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int CirclePy::setCustomAttributes(const char* attr, PyObject *obj)
+int CirclePy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/OffsetSurfacePyImp.cpp b/src/Mod/Part/App/OffsetSurfacePyImp.cpp
index eff384a29..d7dc4f494 100644
--- a/src/Mod/Part/App/OffsetSurfacePyImp.cpp
+++ b/src/Mod/Part/App/OffsetSurfacePyImp.cpp
@@ -78,13 +78,13 @@ int OffsetSurfacePy::PyInit(PyObject* args, PyObject* /*kwd*/)
     }
 }
 
-PyObject* OffsetSurfacePy::uIso(PyObject *args)
+PyObject* OffsetSurfacePy::uIso(PyObject *)
 {
     PyErr_SetString(PyExc_NotImplementedError, "Not yet implemented");
     return 0;
 }
 
-PyObject* OffsetSurfacePy::vIso(PyObject *args)
+PyObject* OffsetSurfacePy::vIso(PyObject *)
 {
     PyErr_SetString(PyExc_NotImplementedError, "Not yet implemented");
     return 0;
diff --git a/src/Mod/Part/App/PartFeature.cpp b/src/Mod/Part/App/PartFeature.cpp
index eb381a34d..6ced6b769 100644
--- a/src/Mod/Part/App/PartFeature.cpp
+++ b/src/Mod/Part/App/PartFeature.cpp
@@ -330,8 +330,8 @@ std::vector<Part::cutFaces> Part::findAllFacesCutBy(
     return result;
 }
 
-const bool Part::checkIntersection(const TopoDS_Shape& first, const TopoDS_Shape& second,
-                                   const bool quick, const bool touch_is_intersection) {
+bool Part::checkIntersection(const TopoDS_Shape& first, const TopoDS_Shape& second,
+                             const bool quick, const bool touch_is_intersection) {
     Bnd_Box first_bb, second_bb;
     BRepBndLib::Add(first, first_bb);
     first_bb.SetGap(0);
diff --git a/src/Mod/Part/App/PartFeature.h b/src/Mod/Part/App/PartFeature.h
index cd386eabd..892c480a5 100644
--- a/src/Mod/Part/App/PartFeature.h
+++ b/src/Mod/Part/App/PartFeature.h
@@ -141,8 +141,8 @@ std::vector<cutFaces> findAllFacesCutBy(const TopoDS_Shape& shape,
   * If there is any error in the boolean operations, the check always returns false
   */
 PartExport
-const bool checkIntersection(const TopoDS_Shape& first, const TopoDS_Shape& second,
-                             const bool quick, const bool touch_is_intersection);
+bool checkIntersection(const TopoDS_Shape& first, const TopoDS_Shape& second,
+                       const bool quick, const bool touch_is_intersection);
 
 } //namespace Part
 
diff --git a/src/Mod/Part/App/PartFeaturePyImp.cpp b/src/Mod/Part/App/PartFeaturePyImp.cpp
index 573129ea0..d184d6bd0 100644
--- a/src/Mod/Part/App/PartFeaturePyImp.cpp
+++ b/src/Mod/Part/App/PartFeaturePyImp.cpp
@@ -37,12 +37,12 @@ std::string PartFeaturePy::representation(void) const
     return std::string("<Part::PartFeature>");
 }
 
-PyObject *PartFeaturePy::getCustomAttributes(const char* attr) const
+PyObject *PartFeaturePy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int PartFeaturePy::setCustomAttributes(const char* attr, PyObject *obj)
+int PartFeaturePy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/PlateSurfacePyImp.cpp b/src/Mod/Part/App/PlateSurfacePyImp.cpp
index 99de264b9..68ccda567 100644
--- a/src/Mod/Part/App/PlateSurfacePyImp.cpp
+++ b/src/Mod/Part/App/PlateSurfacePyImp.cpp
@@ -185,13 +185,13 @@ PyObject* PlateSurfacePy::makeApprox(PyObject *args, PyObject* kwds)
     } PY_CATCH_OCC;
 }
 
-PyObject* PlateSurfacePy::uIso(PyObject *args)
+PyObject* PlateSurfacePy::uIso(PyObject * /*args*/)
 {
     PyErr_SetString(PyExc_NotImplementedError, "Not yet implemented");
     return 0;
 }
 
-PyObject* PlateSurfacePy::vIso(PyObject *args)
+PyObject* PlateSurfacePy::vIso(PyObject * /*args*/)
 {
     PyErr_SetString(PyExc_NotImplementedError, "Not yet implemented");
     return 0;
diff --git a/src/Mod/Part/App/PropertyTopoShape.cpp b/src/Mod/Part/App/PropertyTopoShape.cpp
index 8b556181e..9a1fa92c4 100644
--- a/src/Mod/Part/App/PropertyTopoShape.cpp
+++ b/src/Mod/Part/App/PropertyTopoShape.cpp
@@ -431,23 +431,23 @@ PyObject *PropertyShapeHistory::getPyObject(void)
     return Py::new_reference_to(Py::None());
 }
 
-void PropertyShapeHistory::setPyObject(PyObject *value)
+void PropertyShapeHistory::setPyObject(PyObject *)
 {
 }
 
-void PropertyShapeHistory::Save (Base::Writer &writer) const
+void PropertyShapeHistory::Save (Base::Writer &) const
 {
 }
 
-void PropertyShapeHistory::Restore(Base::XMLReader &reader)
+void PropertyShapeHistory::Restore(Base::XMLReader &)
 {
 }
 
-void PropertyShapeHistory::SaveDocFile (Base::Writer &writer) const
+void PropertyShapeHistory::SaveDocFile (Base::Writer &) const
 {
 }
 
-void PropertyShapeHistory::RestoreDocFile(Base::Reader &reader)
+void PropertyShapeHistory::RestoreDocFile(Base::Reader &)
 {
 }
 
diff --git a/src/Mod/Part/App/Tools.cpp b/src/Mod/Part/App/Tools.cpp
index 6c8d149f5..ff60a6d62 100644
--- a/src/Mod/Part/App/Tools.cpp
+++ b/src/Mod/Part/App/Tools.cpp
@@ -114,6 +114,7 @@ Part::Tools::makeSurface(const TColStd_ListOfTransient &theBoundaries,
                          const Standard_Integer theNbIter,
                          const Standard_Integer theMaxDeg)
 {
+    (void)theTol;
     //constants for algorithm
     const Standard_Integer aNbIter = theNbIter; //number of algorithm iterations
     const Standard_Integer aNbPnts = theNbPnts; //sample points per each constraint
diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 23967ba79..fe2743e8b 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -923,19 +923,19 @@ Base::BoundBox3d TopoShape::getBoundBox(void) const
     return box;
 }
 
-void TopoShape::Save (Base::Writer & writer) const
+void TopoShape::Save (Base::Writer & ) const
 {
 }
 
-void TopoShape::Restore(Base::XMLReader &reader)
+void TopoShape::Restore(Base::XMLReader &)
 {
 }
 
-void TopoShape::SaveDocFile (Base::Writer &writer) const
+void TopoShape::SaveDocFile (Base::Writer &) const
 {
 }
 
-void TopoShape::RestoreDocFile(Base::Reader &reader)
+void TopoShape::RestoreDocFile(Base::Reader &)
 {
 }
 
@@ -1396,11 +1396,15 @@ TopoDS_Compound TopoShape::slices(const Base::Vector3d& dir, const std::vector<d
     return comp;
 }
 
-TopoDS_Shape TopoShape::generalFuse(const std::vector<TopoDS_Shape> &sOthers, Standard_Real tolerance, std::vector<TopTools_ListOfShape>* mapInOut) const
+TopoDS_Shape TopoShape::generalFuse(const std::vector<TopoDS_Shape> &sOthers, Standard_Real tolerance,
+                                    std::vector<TopTools_ListOfShape>* mapInOut) const
 {
     if (this->_Shape.IsNull())
         Standard_Failure::Raise("Base shape is null");
 #if OCC_VERSION_HEX < 0x060900
+    (void)sOthers;
+    (void)tolerance;
+    (void)mapInOut;
     throw Base::AttributeError("GFA is available only in OCC 6.9.0 and up.");
 #else
     BRepAlgoAPI_BuilderAlgo mkGFA;
@@ -1520,6 +1524,7 @@ TopoDS_Shape TopoShape::makeTube() const
 #else 
 static Handle(Law_Function) CreateBsFunction (const Standard_Real theFirst, const Standard_Real theLast, const Standard_Real theRadius)
 {
+    (void)theRadius;
     //Handle_Law_BSpline aBs;
     //Handle_Law_BSpFunc aFunc = new Law_BSpFunc (aBs, theFirst, theLast);
     Handle_Law_Constant aFunc = new Law_Constant();
@@ -2675,7 +2680,7 @@ const double MeshVertex::MESH_MIN_PT_DIST = gp::Resolution();
 
 void TopoShape::getFaces(std::vector<Base::Vector3d> &aPoints,
                          std::vector<Facet> &aTopo,
-                         float accuracy, uint16_t flags) const
+                         float accuracy, uint16_t /*flags*/) const
 {
     if (this->_Shape.IsNull())
         return;
@@ -2809,7 +2814,7 @@ void TopoShape::setFaces(const std::vector<Base::Vector3d> &Points,
 
 void TopoShape::getPoints(std::vector<Base::Vector3d> &Points,
                           std::vector<Base::Vector3d> &Normals,
-                          float Accuracy, uint16_t flags) const
+                          float Accuracy, uint16_t /*flags*/) const
 {
     if (_Shape.IsNull())
         return;
@@ -2919,6 +2924,9 @@ void TopoShape::getLinesFromSubelement(const Data::Segment* element,
                                        std::vector<Base::Vector3d> &Points,
                                        std::vector<Line> &lines) const
 {
+    (void)element;
+    (void)Points;
+    (void)lines;
 }
 
 void TopoShape::getFacesFromSubelement(const Data::Segment* element,
diff --git a/src/Mod/Part/App/TopoShapeFacePyImp.cpp b/src/Mod/Part/App/TopoShapeFacePyImp.cpp
index d5185917d..a742507f1 100644
--- a/src/Mod/Part/App/TopoShapeFacePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapeFacePyImp.cpp
@@ -764,12 +764,12 @@ Py::Dict TopoShapeFacePy::getPrincipalProperties(void) const
     return dict;
 }
 
-PyObject *TopoShapeFacePy::getCustomAttributes(const char* attr) const
+PyObject *TopoShapeFacePy::getCustomAttributes(const char* ) const
 {
     return 0;
 }
 
-int TopoShapeFacePy::setCustomAttributes(const char* attr, PyObject *obj)
+int TopoShapeFacePy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/App/TopoShapePyImp.cpp b/src/Mod/Part/App/TopoShapePyImp.cpp
index e489a2654..e6d0c7f9d 100644
--- a/src/Mod/Part/App/TopoShapePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapePyImp.cpp
@@ -1916,6 +1916,7 @@ PyObject* TopoShapePy::proximity(PyObject *args)
     //return Py_BuildValue("OO", overlappss1, overlappss2); //subshapes
     return Py_BuildValue("OO", overlappssindex1, overlappssindex2); //face indexes
 #else
+    (void)args;
     PyErr_SetString(PyExc_NotImplementedError, "proximity requires OCCT >= 6.8.1");
     return 0;
 #endif
@@ -2413,7 +2414,7 @@ PyObject *TopoShapePy::getCustomAttributes(const char* attr) const
     return 0;
 }
 
-int TopoShapePy::setCustomAttributes(const char* attr, PyObject *obj)
+int TopoShapePy::setCustomAttributes(const char* , PyObject *)
 {
     return 0; 
 }
diff --git a/src/Mod/Part/Gui/Command.cpp b/src/Mod/Part/Gui/Command.cpp
index 11fdb79ed..01e6e1577 100644
--- a/src/Mod/Part/Gui/Command.cpp
+++ b/src/Mod/Part/Gui/Command.cpp
@@ -94,7 +94,7 @@ CmdPartPickCurveNet::CmdPartPickCurveNet()
 
 void CmdPartPickCurveNet::activated(int iMsg)
 {
-
+    Q_UNUSED(iMsg);
 }
 
 //===========================================================================
@@ -116,6 +116,7 @@ CmdPartNewDoc::CmdPartNewDoc()
 
 void CmdPartNewDoc::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     doCommand(Doc,"d = App.New()");
     updateActive();
 }
@@ -137,9 +138,9 @@ CmdPartBox2::CmdPartBox2()
     sPixmap       = "Part_Box";
 }
 
-
 void CmdPartBox2::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     openCommand("Part Box Create");
     doCommand(Doc,"from FreeCAD import Base");
     doCommand(Doc,"import Part");
@@ -180,6 +181,7 @@ CmdPartBox3::CmdPartBox3()
 
 void CmdPartBox3::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     openCommand("Part Box Create");
     doCommand(Doc,"from FreeCAD import Base");
     doCommand(Doc,"import Part");
@@ -220,6 +222,7 @@ CmdPartPrimitives::CmdPartPrimitives()
 
 void CmdPartPrimitives::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     PartGui::TaskPrimitives* dlg = new PartGui::TaskPrimitives();
     Gui::Control().showDialog(dlg);
 }
@@ -273,6 +276,7 @@ CmdPartCut::CmdPartCut()
 
 void CmdPartCut::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     std::vector<Gui::SelectionObject> Sel = getSelection().getSelectionEx(0, Part::Feature::getClassTypeId());
     if (Sel.size() != 2) {
         QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Wrong selection"),
@@ -350,6 +354,7 @@ CmdPartCommon::CmdPartCommon()
 
 void CmdPartCommon::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     std::vector<Gui::SelectionObject> Sel = getSelection().getSelectionEx(0, Part::Feature::getClassTypeId());
 
     //test if selected object is a compound, and if it is, look how many children it has...
@@ -451,6 +456,7 @@ CmdPartFuse::CmdPartFuse()
 
 void CmdPartFuse::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     std::vector<Gui::SelectionObject> Sel = getSelection().getSelectionEx(0, Part::Feature::getClassTypeId());
 
     //test if selected object is a compound, and if it is, look how many children it has...
@@ -767,6 +773,7 @@ CmdPartCompound::CmdPartCompound()
 
 void CmdPartCompound::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     unsigned int n = getSelection().countObjectsOfType(Part::Feature::getClassTypeId());
     if (n < 1) {
         QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Wrong selection"),
@@ -817,6 +824,7 @@ CmdPartSection::CmdPartSection()
 
 void CmdPartSection::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     std::vector<Gui::SelectionObject> Sel = getSelection().getSelectionEx(0, Part::Feature::getClassTypeId());
     if (Sel.size() != 2) {
         QMessageBox::warning(Gui::getMainWindow(), QObject::tr("Wrong selection"),
@@ -863,6 +871,7 @@ CmdPartImport::CmdPartImport()
 
 void CmdPartImport::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QStringList filter;
     filter << QString::fromLatin1("STEP (*.stp *.step)");
     filter << QString::fromLatin1("STEP with colors (*.stp *.step)");
@@ -922,6 +931,7 @@ CmdPartExport::CmdPartExport()
 
 void CmdPartExport::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QStringList filter;
     filter << QString::fromLatin1("STEP (*.stp *.step)");
     filter << QString::fromLatin1("STEP with colors (*.stp *.step)");
@@ -968,6 +978,7 @@ CmdPartImportCurveNet::CmdPartImportCurveNet()
 
 void CmdPartImportCurveNet::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QStringList filter;
     filter << QString::fromLatin1("%1 (*.stp *.step *.igs *.iges *.brp *.brep)")
                  .arg(QObject::tr("All CAD Files"));
@@ -1014,6 +1025,7 @@ CmdPartMakeSolid::CmdPartMakeSolid()
 
 void CmdPartMakeSolid::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     std::vector<App::DocumentObject*> objs = Gui::Selection().getObjectsOfType
         (Part::Feature::getClassTypeId());
     runCommand(Doc, "import Part");
@@ -1081,7 +1093,6 @@ DEF_STD_CMD_A(CmdPartReverseShape);
 CmdPartReverseShape::CmdPartReverseShape()
   :Command("Part_ReverseShape")
 {
-
     sAppModule    = "Part";
     sGroup        = QT_TR_NOOP("Part");
     sMenuText     = QT_TR_NOOP("Reverse shapes");
@@ -1092,6 +1103,7 @@ CmdPartReverseShape::CmdPartReverseShape()
 
 void CmdPartReverseShape::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     std::vector<App::DocumentObject*> objs = Gui::Selection().getObjectsOfType
         (Part::Feature::getClassTypeId());
     runCommand(Doc, "import Part");
@@ -1146,6 +1158,7 @@ CmdPartBoolean::CmdPartBoolean()
 
 void CmdPartBoolean::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::TaskView::TaskDialog* dlg = Gui::Control().activeDialog();
     if (!dlg)
         dlg = new PartGui::TaskBooleanOperation();
@@ -1176,6 +1189,7 @@ CmdPartExtrude::CmdPartExtrude()
 
 void CmdPartExtrude::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskExtrusion());
 }
 
@@ -1202,6 +1216,7 @@ CmdPartMakeFace::CmdPartMakeFace()
 
 void CmdPartMakeFace::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     std::vector<Part::Part2DObject*> sketches = Gui::Selection().getObjectsOfType<Part::Part2DObject>();
     openCommand("Make face");
 
@@ -1252,6 +1267,7 @@ CmdPartRevolve::CmdPartRevolve()
 
 void CmdPartRevolve::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskRevolution());
 }
 
@@ -1279,6 +1295,7 @@ CmdPartFillet::CmdPartFillet()
 
 void CmdPartFillet::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskFilletEdges(0));
 }
 
@@ -1306,6 +1323,7 @@ CmdPartChamfer::CmdPartChamfer()
 
 void CmdPartChamfer::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskChamferEdges(0));
 }
 
@@ -1333,6 +1351,7 @@ CmdPartMirror::CmdPartMirror()
 
 void CmdPartMirror::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskMirroring());
 }
 
@@ -1360,6 +1379,7 @@ CmdPartCrossSections::CmdPartCrossSections()
 
 void CmdPartCrossSections::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::TaskView::TaskDialog* dlg = Gui::Control().activeDialog();
     if (!dlg) {
         std::vector<App::DocumentObject*> obj = Gui::Selection().getObjectsOfType
@@ -1399,6 +1419,7 @@ CmdPartBuilder::CmdPartBuilder()
 
 void CmdPartBuilder::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskShapeBuilder());
 }
 
@@ -1427,6 +1448,7 @@ CmdPartLoft::CmdPartLoft()
 
 void CmdPartLoft::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskLoft());
 }
 
@@ -1455,6 +1477,7 @@ CmdPartSweep::CmdPartSweep()
 
 void CmdPartSweep::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::Control().showDialog(new PartGui::TaskSweep());
 }
 
@@ -1483,6 +1506,7 @@ CmdPartOffset::CmdPartOffset()
 
 void CmdPartOffset::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     App::DocumentObject* shape = getSelection().getObjectsOfType(Part::Feature::getClassTypeId()).front();
     std::string offset = getUniqueObjectName("Offset");
 
@@ -1531,6 +1555,7 @@ CmdPartOffset2D::CmdPartOffset2D()
 
 void CmdPartOffset2D::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     App::DocumentObject* shape = getSelection().getObjectsOfType(Part::Feature::getClassTypeId()).front();
     std::string offset = getUniqueObjectName("Offset2D");
 
@@ -1671,6 +1696,7 @@ CmdPartThickness::CmdPartThickness()
 
 void CmdPartThickness::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::SelectionFilter faceFilter  ("SELECT Part::Feature SUBELEMENT Face COUNT 1..");
     if (!faceFilter.match()) {
         QMessageBox::warning(Gui::getMainWindow(),
@@ -1745,6 +1771,7 @@ CmdShapeInfo::CmdShapeInfo()
 
 void CmdShapeInfo::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
 #if 0
     static const char * const part_pipette[]={
         "32 32 17 1",
@@ -1844,6 +1871,7 @@ CmdPartRuledSurface::CmdPartRuledSurface()
 
 void CmdPartRuledSurface::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     bool ok = false;
     TopoDS_Shape curve1, curve2;
     std::string link1, link2, obj1, obj2;
@@ -1959,6 +1987,7 @@ CmdCheckGeometry::CmdCheckGeometry()
 
 void CmdCheckGeometry::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::TaskView::TaskDialog* dlg = Gui::Control().activeDialog();
     if (!dlg)
         dlg = new PartGui::TaskCheckGeometryDialog();
@@ -1991,6 +2020,7 @@ CmdColorPerFace::CmdColorPerFace()
 
 void CmdColorPerFace::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     if (getActiveGuiDocument()->getInEdit())
         getActiveGuiDocument()->resetEdit();
     std::vector<App::DocumentObject*> sel = Gui::Selection().getObjectsOfType(Part::Feature::getClassTypeId());
@@ -2028,6 +2058,7 @@ CmdMeasureLinear::CmdMeasureLinear()
 
 void CmdMeasureLinear::activated(int iMsg)
 {
+  Q_UNUSED(iMsg);
   PartGui::goDimensionLinearRoot();
 }
 
@@ -2056,6 +2087,7 @@ CmdMeasureAngular::CmdMeasureAngular()
 
 void CmdMeasureAngular::activated(int iMsg)
 {
+  Q_UNUSED(iMsg);
   PartGui::goDimensionAngularRoot();
 }
 
@@ -2084,6 +2116,7 @@ CmdMeasureClearAll::CmdMeasureClearAll()
 
 void CmdMeasureClearAll::activated(int iMsg)
 {
+  Q_UNUSED(iMsg);
   PartGui::eraseAllDimensions();
 }
 
@@ -2112,6 +2145,7 @@ CmdMeasureToggleAll::CmdMeasureToggleAll()
 
 void CmdMeasureToggleAll::activated(int iMsg)
 {
+  Q_UNUSED(iMsg);
   ParameterGrp::handle group = App::GetApplication().GetUserParameter().
     GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("View");
   bool visibility = group->GetBool("DimensionsVisible", true);
@@ -2146,6 +2180,7 @@ CmdMeasureToggle3d::CmdMeasureToggle3d()
 
 void CmdMeasureToggle3d::activated(int iMsg)
 {
+  Q_UNUSED(iMsg);
   PartGui::toggle3d();
 }
 
@@ -2174,6 +2209,7 @@ CmdMeasureToggleDelta::CmdMeasureToggleDelta()
 
 void CmdMeasureToggleDelta::activated(int iMsg)
 {
+  Q_UNUSED(iMsg);
   PartGui::toggleDelta();
 }
 
diff --git a/src/Mod/Part/Gui/CommandParametric.cpp b/src/Mod/Part/Gui/CommandParametric.cpp
index ad71f8a5f..5fe7c3b44 100644
--- a/src/Mod/Part/Gui/CommandParametric.cpp
+++ b/src/Mod/Part/Gui/CommandParametric.cpp
@@ -53,6 +53,7 @@ CmdPartCylinder::CmdPartCylinder()
 
 void CmdPartCylinder::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QString cmd;
     cmd = qApp->translate("CmdPartCylinder","Cylinder");
     openCommand((const char*)cmd.toUtf8());
@@ -93,6 +94,7 @@ CmdPartBox::CmdPartBox()
 
 void CmdPartBox::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QString cmd;
     cmd = qApp->translate("CmdPartBox","Cube");
     openCommand((const char*)cmd.toUtf8());
@@ -133,6 +135,7 @@ CmdPartSphere::CmdPartSphere()
 
 void CmdPartSphere::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QString cmd;
     cmd = qApp->translate("CmdPartSphere","Sphere");
     openCommand((const char*)cmd.toUtf8());
@@ -173,6 +176,7 @@ CmdPartCone::CmdPartCone()
 
 void CmdPartCone::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QString cmd;
     cmd = qApp->translate("CmdPartCone","Cone");
     openCommand((const char*)cmd.toUtf8());
@@ -213,6 +217,7 @@ CmdPartTorus::CmdPartTorus()
 
 void CmdPartTorus::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     QString cmd;
     cmd = qApp->translate("CmdPartTorus","Torus");
     openCommand((const char*)cmd.toUtf8());
diff --git a/src/Mod/Part/Gui/CommandSimple.cpp b/src/Mod/Part/Gui/CommandSimple.cpp
index a4c78e42d..434282605 100644
--- a/src/Mod/Part/Gui/CommandSimple.cpp
+++ b/src/Mod/Part/Gui/CommandSimple.cpp
@@ -64,6 +64,7 @@ CmdPartSimpleCylinder::CmdPartSimpleCylinder()
 
 void CmdPartSimpleCylinder::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     PartGui::DlgPartCylinderImp dlg(Gui::getMainWindow());
     if (dlg.exec()== QDialog::Accepted) {
         Base::Vector3d dir = dlg.getDirection();
@@ -114,6 +115,7 @@ CmdPartShapeFromMesh::CmdPartShapeFromMesh()
 
 void CmdPartShapeFromMesh::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     bool ok;
     double tol = QInputDialog::getDouble(Gui::getMainWindow(), QObject::tr("Sewing Tolerance"),
         QObject::tr("Enter tolerance for sewing shape:"), 0.1, 0.01,10.0,2,&ok);
@@ -176,6 +178,7 @@ CmdPartSimpleCopy::CmdPartSimpleCopy()
 
 void CmdPartSimpleCopy::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Base::Type partid = Base::Type::fromName("Part::Feature");
     std::vector<App::DocumentObject*> objs = Gui::Selection().getObjectsOfType(partid);
     openCommand("Create Copy");
@@ -221,6 +224,7 @@ CmdPartRefineShape::CmdPartRefineShape()
 
 void CmdPartRefineShape::activated(int iMsg)
 {
+    Q_UNUSED(iMsg);
     Gui::WaitCursor wc;
     Base::Type partid = Base::Type::fromName("Part::Feature");
     std::vector<App::DocumentObject*> objs = Gui::Selection().getObjectsOfType(partid);
diff --git a/src/Mod/Part/Gui/DlgBooleanOperation.cpp b/src/Mod/Part/Gui/DlgBooleanOperation.cpp
index d189966a5..0c21f1373 100644
--- a/src/Mod/Part/Gui/DlgBooleanOperation.cpp
+++ b/src/Mod/Part/Gui/DlgBooleanOperation.cpp
@@ -304,6 +304,8 @@ bool DlgBooleanOperation::indexOfCurrentItem(QTreeWidgetItem* item, int& top_ind
 
 void DlgBooleanOperation::currentItemChanged(QTreeWidgetItem* current, QTreeWidgetItem * previous)
 {
+    Q_UNUSED(current);
+    Q_UNUSED(previous);
 //    if (current && current->flags() & Qt::ItemIsUserCheckable)
 //        current->setCheckState(0, Qt::Checked);
     //if (previous && previous->flags() & Qt::ItemIsUserCheckable)
diff --git a/src/Mod/Part/Gui/DlgExtrusion.cpp b/src/Mod/Part/Gui/DlgExtrusion.cpp
index 985e25970..7dceb2f47 100644
--- a/src/Mod/Part/Gui/DlgExtrusion.cpp
+++ b/src/Mod/Part/Gui/DlgExtrusion.cpp
@@ -67,7 +67,7 @@ public:
     {
         canSelect = false;
     }
-    bool allow(App::Document* pDoc, App::DocumentObject* pObj, const char* sSubName)
+    bool allow(App::Document* /*pDoc*/, App::DocumentObject* pObj, const char* sSubName)
     {
         this->canSelect = false;
         if (!pObj->isDerivedFrom(Part::Feature::getClassTypeId()))
diff --git a/src/Mod/Part/Gui/DlgFilletEdges.cpp b/src/Mod/Part/Gui/DlgFilletEdges.cpp
index 0d4d8e2fb..275f368e0 100644
--- a/src/Mod/Part/Gui/DlgFilletEdges.cpp
+++ b/src/Mod/Part/Gui/DlgFilletEdges.cpp
@@ -184,7 +184,7 @@ namespace PartGui {
         {
             allowEdge = false;
         }
-        bool allow(App::Document*pDoc, App::DocumentObject*pObj, const char*sSubName)
+        bool allow(App::Document* /*pDoc*/, App::DocumentObject*pObj, const char*sSubName)
         {
             if (pObj != this->object)
                 return false;
diff --git a/src/Mod/Part/Gui/DlgPrimitives.cpp b/src/Mod/Part/Gui/DlgPrimitives.cpp
index 023268808..a378788bb 100644
--- a/src/Mod/Part/Gui/DlgPrimitives.cpp
+++ b/src/Mod/Part/Gui/DlgPrimitives.cpp
@@ -683,6 +683,7 @@ void DlgPrimitives::createPrimitive(const QString& placement)
 
 Location::Location(QWidget* parent)
 {
+    Q_UNUSED(parent);
     mode = 0;
     ui.setupUi(this);
 }
diff --git a/src/Mod/Part/Gui/DlgRevolution.cpp b/src/Mod/Part/Gui/DlgRevolution.cpp
index bb203fd71..0d3f5973d 100644
--- a/src/Mod/Part/Gui/DlgRevolution.cpp
+++ b/src/Mod/Part/Gui/DlgRevolution.cpp
@@ -70,7 +70,7 @@ public:
     {
         canSelect = false;
     }
-    bool allow(App::Document*pDoc, App::DocumentObject*pObj, const char*sSubName)
+    bool allow(App::Document* /*pDoc*/, App::DocumentObject*pObj, const char*sSubName)
     {
         this->canSelect = false;
         if (!pObj->isDerivedFrom(Part::Feature::getClassTypeId()))
diff --git a/src/Mod/Part/Gui/SoFCShapeObject.cpp b/src/Mod/Part/Gui/SoFCShapeObject.cpp
index e4da17d5b..af853a0f4 100644
--- a/src/Mod/Part/Gui/SoFCShapeObject.cpp
+++ b/src/Mod/Part/Gui/SoFCShapeObject.cpp
@@ -148,7 +148,7 @@ void SoFCControlPoints::drawControlPoints(const SbVec3f * points,int32_t len) co
     glEnd();
 }
 
-void SoFCControlPoints::generatePrimitives(SoAction* action)
+void SoFCControlPoints::generatePrimitives(SoAction* /*action*/)
 {
 }
 
diff --git a/src/Mod/Part/Gui/TaskCheckGeometry.cpp b/src/Mod/Part/Gui/TaskCheckGeometry.cpp
index c80ec22a7..076e18c5f 100644
--- a/src/Mod/Part/Gui/TaskCheckGeometry.cpp
+++ b/src/Mod/Part/Gui/TaskCheckGeometry.cpp
@@ -307,6 +307,7 @@ int ResultModel::rowCount(const QModelIndex &parent) const
 
 int ResultModel::columnCount(const QModelIndex &parent) const
 {
+    Q_UNUSED(parent);
     return 3;
 }
 
diff --git a/src/Mod/Part/Gui/TaskFaceColors.cpp b/src/Mod/Part/Gui/TaskFaceColors.cpp
index 04b28824d..76eb885ee 100644
--- a/src/Mod/Part/Gui/TaskFaceColors.cpp
+++ b/src/Mod/Part/Gui/TaskFaceColors.cpp
@@ -77,7 +77,7 @@ namespace PartGui {
             : Gui::SelectionFilterGate((Gui::SelectionFilter*)0), object(obj)
         {
         }
-        bool allow(App::Document*pDoc, App::DocumentObject*pObj, const char*sSubName)
+        bool allow(App::Document* /*pDoc*/, App::DocumentObject*pObj, const char*sSubName)
         {
             if (pObj != this->object)
                 return false;
@@ -161,7 +161,7 @@ public:
 
         return false;
     }
-    void addFacesToSelection(Gui::View3DInventorViewer* viewer,
+    void addFacesToSelection(Gui::View3DInventorViewer* /*viewer*/,
                              const Gui::ViewVolumeProjection& proj,
                              const Base::Polygon2D& polygon,
                              const TopoDS_Shape& shape)
@@ -257,6 +257,7 @@ public:
 FaceColors::FaceColors(ViewProviderPartExt* vp, QWidget* parent)
   : d(new Private(vp))
 {
+    Q_UNUSED(parent);
     d->ui->setupUi(this);
     d->ui->groupBox->setTitle(QString::fromUtf8(vp->getObject()->Label.getValue()));
     d->ui->colorButton->setDisabled(true);
diff --git a/src/Mod/Part/Gui/TaskLoft.cpp b/src/Mod/Part/Gui/TaskLoft.cpp
index 24e072961..a030d32ba 100644
--- a/src/Mod/Part/Gui/TaskLoft.cpp
+++ b/src/Mod/Part/Gui/TaskLoft.cpp
@@ -67,6 +67,7 @@ public:
 LoftWidget::LoftWidget(QWidget* parent)
   : d(new Private())
 {
+    Q_UNUSED(parent);
     Gui::Command::runCommand(Gui::Command::App, "from FreeCAD import Base");
     Gui::Command::runCommand(Gui::Command::App, "import Part");
 
diff --git a/src/Mod/Part/Gui/TaskOffset.cpp b/src/Mod/Part/Gui/TaskOffset.cpp
index 2114b586d..2d3818778 100644
--- a/src/Mod/Part/Gui/TaskOffset.cpp
+++ b/src/Mod/Part/Gui/TaskOffset.cpp
@@ -68,6 +68,7 @@ public:
 OffsetWidget::OffsetWidget(Part::Offset* offset, QWidget* parent)
   : d(new Private())
 {
+    Q_UNUSED(parent);
     Gui::Command::runCommand(Gui::Command::App, "from FreeCAD import Base");
     Gui::Command::runCommand(Gui::Command::App, "import Part");
 
diff --git a/src/Mod/Part/Gui/TaskShapeBuilder.cpp b/src/Mod/Part/Gui/TaskShapeBuilder.cpp
index baa099d77..b825bf37f 100644
--- a/src/Mod/Part/Gui/TaskShapeBuilder.cpp
+++ b/src/Mod/Part/Gui/TaskShapeBuilder.cpp
@@ -108,6 +108,7 @@ public:
 ShapeBuilderWidget::ShapeBuilderWidget(QWidget* parent)
   : d(new Private())
 {
+    Q_UNUSED(parent);
     d->ui.setupUi(this);
     d->ui.label->setText(QString());
     d->bg.addButton(d->ui.radioButtonEdgeFromVertex, 0);
diff --git a/src/Mod/Part/Gui/TaskSweep.cpp b/src/Mod/Part/Gui/TaskSweep.cpp
index d05db6a00..96ef926ed 100644
--- a/src/Mod/Part/Gui/TaskSweep.cpp
+++ b/src/Mod/Part/Gui/TaskSweep.cpp
@@ -81,7 +81,7 @@ public:
             : Gui::SelectionFilterGate((Gui::SelectionFilter*)0)
         {
         }
-        bool allow(App::Document*pDoc, App::DocumentObject*pObj, const char*sSubName)
+        bool allow(App::Document* /*pDoc*/, App::DocumentObject*pObj, const char*sSubName)
         {
             if (pObj->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
                 if (!sSubName) {
@@ -128,6 +128,7 @@ public:
 SweepWidget::SweepWidget(QWidget* parent)
   : d(new Private())
 {
+    Q_UNUSED(parent);
     Gui::Command::runCommand(Gui::Command::App, "from FreeCAD import Base");
     Gui::Command::runCommand(Gui::Command::App, "import Part");
 
diff --git a/src/Mod/Part/Gui/TaskThickness.cpp b/src/Mod/Part/Gui/TaskThickness.cpp
index f53d42501..622a1d70c 100644
--- a/src/Mod/Part/Gui/TaskThickness.cpp
+++ b/src/Mod/Part/Gui/TaskThickness.cpp
@@ -74,7 +74,7 @@ public:
             : Gui::SelectionFilterGate((Gui::SelectionFilter*)0), object(obj)
         {
         }
-        bool allow(App::Document*pDoc, App::DocumentObject*pObj, const char*sSubName)
+        bool allow(App::Document* /*pDoc*/, App::DocumentObject*pObj, const char*sSubName)
         {
             if (pObj != this->object)
                 return false;
@@ -91,6 +91,7 @@ public:
 ThicknessWidget::ThicknessWidget(Part::Thickness* thickness, QWidget* parent)
   : d(new Private())
 {
+    Q_UNUSED(parent);
     Gui::Command::runCommand(Gui::Command::App, "from FreeCAD import Base");
     Gui::Command::runCommand(Gui::Command::App, "import Part");
 
diff --git a/src/Mod/Part/Gui/ViewProvider.cpp b/src/Mod/Part/Gui/ViewProvider.cpp
index fc6aeef59..60d71d8d8 100644
--- a/src/Mod/Part/Gui/ViewProvider.cpp
+++ b/src/Mod/Part/Gui/ViewProvider.cpp
@@ -80,10 +80,10 @@ void ViewProviderPart::applyColor(const Part::ShapeHistory& hist,
 
 // ----------------------------------------------------------------------------
 
-void ViewProviderShapeBuilder::buildNodes(const App::Property* prop, std::vector<SoNode*>& nodes) const
+void ViewProviderShapeBuilder::buildNodes(const App::Property* , std::vector<SoNode*>& ) const
 {
 }
 
-void ViewProviderShapeBuilder::createShape(const App::Property* prop, SoSeparator* coords) const
+void ViewProviderShapeBuilder::createShape(const App::Property* , SoSeparator* ) const
 {
 }
diff --git a/src/Mod/Part/Gui/ViewProviderExt.cpp b/src/Mod/Part/Gui/ViewProviderExt.cpp
index 0dbd6226f..c0598d4f7 100644
--- a/src/Mod/Part/Gui/ViewProviderExt.cpp
+++ b/src/Mod/Part/Gui/ViewProviderExt.cpp
@@ -633,7 +633,7 @@ std::vector<Base::Vector3d> ViewProviderPartExt::getModelPoints(const SoPickedPo
     return std::vector<Base::Vector3d>();
 }
 
-std::vector<Base::Vector3d> ViewProviderPartExt::getSelectionShape(const char* Element) const
+std::vector<Base::Vector3d> ViewProviderPartExt::getSelectionShape(const char* /*Element*/) const
 {
     return std::vector<Base::Vector3d>();
 }
diff --git a/src/Mod/Part/Gui/ViewProviderMirror.cpp b/src/Mod/Part/Gui/ViewProviderMirror.cpp
index 26ff1e6d0..27c0bfd1b 100644
--- a/src/Mod/Part/Gui/ViewProviderMirror.cpp
+++ b/src/Mod/Part/Gui/ViewProviderMirror.cpp
@@ -192,13 +192,13 @@ bool ViewProviderMirror::onDelete(const std::vector<std::string> &)
     return true;
 }
 
-void ViewProviderMirror::dragStartCallback(void *data, SoDragger *)
+void ViewProviderMirror::dragStartCallback(void *, SoDragger *)
 {
     // This is called when a manipulator is about to manipulating
     Gui::Application::Instance->activeDocument()->openCommand("Edit Mirror");
 }
 
-void ViewProviderMirror::dragFinishCallback(void *data, SoDragger *)
+void ViewProviderMirror::dragFinishCallback(void *, SoDragger *)
 {
     // This is called when a manipulator has done manipulating
     Gui::Application::Instance->activeDocument()->commitCommand();
diff --git a/src/Mod/Part/Gui/ViewProviderReference.cpp b/src/Mod/Part/Gui/ViewProviderReference.cpp
index 7f3c1eed4..f87b1320c 100644
--- a/src/Mod/Part/Gui/ViewProviderReference.cpp
+++ b/src/Mod/Part/Gui/ViewProviderReference.cpp
@@ -176,7 +176,7 @@ ViewProviderPartReference::~ViewProviderPartReference()
     //pShapeHints->unref();
 }
 
-void ViewProviderPartReference::onChanged(const App::Property* prop)
+void ViewProviderPartReference::onChanged(const App::Property* /*prop*/)
 {
     //if (prop == &LineWidth) {
     //    pcLineStyle->lineWidth = LineWidth.getValue();
@@ -292,6 +292,6 @@ std::vector<std::string> ViewProviderPartReference::getDisplayModes(void) const
 }
 
 
-void ViewProviderPartReference::updateData(const App::Property* prop)
+void ViewProviderPartReference::updateData(const App::Property* )
 {
 }