diff --git a/CI/ci-cppcheck.sh b/CI/ci-cppcheck.sh
index a28333a0..69f1c107 100755
--- a/CI/ci-cppcheck.sh
+++ b/CI/ci-cppcheck.sh
@@ -32,7 +32,7 @@ echo "CPPCHECK Summary"
 echo "=============================================================================="
 echo -e "${NC}"
 
-MAX_COUNT=165
+MAX_COUNT=162
 
 if [ $COUNT -gt $MAX_COUNT ]; then
   echo -e ${WARNING}
diff --git a/Doc/changelog.docu b/Doc/changelog.docu
index a72e6449..6e6d11bf 100644
--- a/Doc/changelog.docu
+++ b/Doc/changelog.docu
@@ -13,6 +13,10 @@
 <li>Update Doxygen config format</li>
 </ul>
 
+<b>Build System</b>
+<ul>
+<li>GTest is now automatically fetched via official git repository and build when unittests have been enabled</li>
+</ul>
 
 </tr>
 
diff --git a/src/OpenMesh/Core/IO/reader/OMReader.cc b/src/OpenMesh/Core/IO/reader/OMReader.cc
index 5ed81c58..cab6fd42 100644
--- a/src/OpenMesh/Core/IO/reader/OMReader.cc
+++ b/src/OpenMesh/Core/IO/reader/OMReader.cc
@@ -155,7 +155,7 @@ bool _OMReader_::read(std::istream& _is, BaseImporter& _bi, Options& _opt)
 
 //-----------------------------------------------------------------------------
 
-bool _OMReader_::read_ascii(std::istream& /* _is */, BaseImporter& /* _bi */, Options& /* _opt */) const
+bool _OMReader_::read_ascii(std::istream& /* _is */, BaseImporter& /* _bi */, const Options& /* _opt */) const
 {
   // not supported yet!
   return false;
@@ -164,7 +164,7 @@ bool _OMReader_::read_ascii(std::istream& /* _is */, BaseImporter& /* _bi */, Op
 
 //-----------------------------------------------------------------------------
 
-bool _OMReader_::read_binary(std::istream& _is, BaseImporter& _bi, Options& _opt) const
+bool _OMReader_::read_binary(std::istream& _is, BaseImporter& _bi, const Options& _opt) const
 {
   bool swap_required = _opt.check(Options::Swap) || (Endian::local() == Endian::MSB);
 
diff --git a/src/OpenMesh/Core/IO/reader/OMReader.hh b/src/OpenMesh/Core/IO/reader/OMReader.hh
index ed042f68..26801477 100644
--- a/src/OpenMesh/Core/IO/reader/OMReader.hh
+++ b/src/OpenMesh/Core/IO/reader/OMReader.hh
@@ -110,8 +110,8 @@ private:
 
   bool supports( const OMFormat::uint8 version ) const;
 
-  bool read_ascii(std::istream& _is, BaseImporter& _bi, Options& _opt) const;
-  bool read_binary(std::istream& _is, BaseImporter& _bi, Options& _opt) const;
+  bool read_ascii(std::istream& _is, BaseImporter& _bi, const Options& _opt) const;
+  bool read_binary(std::istream& _is, BaseImporter& _bi, const Options& _opt) const;
 
   typedef OMFormat::Header              Header;
   typedef OMFormat::Chunk::Header       ChunkHeader;
diff --git a/src/OpenMesh/Tools/Subdivider/Adaptive/Composite/RulesT.hh b/src/OpenMesh/Tools/Subdivider/Adaptive/Composite/RulesT.hh
index 7e41ebce..6cbb517f 100644
--- a/src/OpenMesh/Tools/Subdivider/Adaptive/Composite/RulesT.hh
+++ b/src/OpenMesh/Tools/Subdivider/Adaptive/Composite/RulesT.hh
@@ -64,14 +64,6 @@
 #include <vector>
 
 
-#if defined(OM_CC_MIPS) // avoid warnings
-#  define MIPS_WARN_WA( Item ) \
-  void raise(typename M:: ## Item ## Handle &_h, state_t _target_state ) \
-  { Inherited::raise(_h, _target_state); }
-#else
-#  define MIPS_WARN_WA( Item )
-#endif
-
 //== NAMESPACE ================================================================
 
 namespace OpenMesh   { // BEGIN_NS_OPENMESH
@@ -103,7 +95,6 @@ public:
 
   void raise(typename M::FaceHandle&   _fh, state_t _target_state) override;
   void raise(typename M::VertexHandle& _vh, state_t _target_state) override;
-  MIPS_WARN_WA(Edge) // avoid warning
 };
 
 
@@ -155,8 +146,6 @@ public:
   explicit VF(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::FaceHandle& _fh, state_t _target_state) override;
-  MIPS_WARN_WA(Edge)
-  MIPS_WARN_WA(Vertex)
 };
 
 
@@ -177,8 +166,6 @@ public:
   explicit FF(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::FaceHandle& _fh, state_t _target_state) override;
-  MIPS_WARN_WA(Vertex) // avoid warning
-  MIPS_WARN_WA(Edge  ) // avoid warning
 };
 
 
@@ -199,8 +186,6 @@ public:
   explicit FFc(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::FaceHandle& _fh, state_t _target_state) override;
-  MIPS_WARN_WA(Vertex) // avoid warning
-  MIPS_WARN_WA(Edge  ) // avoid warning
 };
 
 
@@ -221,8 +206,6 @@ public:
   explicit FV(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::VertexHandle& _vh, state_t _target_state) override;
-  MIPS_WARN_WA(Face) // avoid warning
-  MIPS_WARN_WA(Edge) // avoid warning
 };
 
 
@@ -243,8 +226,6 @@ public:
   explicit FVc(M& _mesh) : Inherited(_mesh) { init_coeffs(50); }
 
   void raise(typename M::VertexHandle& _vh, state_t _target_state) override;
-  MIPS_WARN_WA(Face) // avoid warning
-  MIPS_WARN_WA(Edge) // avoid warning
 
   static void init_coeffs(size_t _max_valence);
   static const std::vector<double>& coeffs() { return coeffs_; }
@@ -280,8 +261,6 @@ public:
   explicit VV(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::VertexHandle& _vh, state_t _target_state) override;
-  MIPS_WARN_WA(Face) // avoid warning
-  MIPS_WARN_WA(Edge) // avoid warning
 };
 
 
@@ -302,8 +281,6 @@ public:
   explicit VVc(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::VertexHandle& _vh, state_t _target_state) override;
-  MIPS_WARN_WA(Face) // avoid warning
-  MIPS_WARN_WA(Edge) // avoid warning
 };
 
 
@@ -324,8 +301,6 @@ public:
   explicit VE(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::EdgeHandle& _eh, state_t _target_state) override;
-  MIPS_WARN_WA(Face  ) // avoid warning
-  MIPS_WARN_WA(Vertex) // avoid warning
 };
 
 
@@ -346,8 +321,6 @@ public:
   explicit VdE(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::EdgeHandle& _eh, state_t _target_state) override;
-  MIPS_WARN_WA(Face  ) // avoid warning
-  MIPS_WARN_WA(Vertex) // avoid warning
 };
 
 
@@ -368,8 +341,6 @@ public:
   explicit VdEc(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::EdgeHandle& _eh, state_t _target_state) override;
-  MIPS_WARN_WA(Face  ) // avoid warning
-  MIPS_WARN_WA(Vertex) // avoid warning
 };
 
 
@@ -390,8 +361,6 @@ public:
   explicit EV(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::VertexHandle& _vh, state_t _target_state) override;
-  MIPS_WARN_WA(Face) // avoid warning
-  MIPS_WARN_WA(Edge) // avoid warning
 };
 
 
@@ -413,8 +382,6 @@ public:
   explicit EVc(M& _mesh) : Inherited(_mesh) { init_coeffs(50); }
 
   void raise(typename M::VertexHandle& _vh, state_t _target_state) override;
-  MIPS_WARN_WA(Face) // avoid warning
-  MIPS_WARN_WA(Edge) // avoid warning
 
   static void init_coeffs(size_t _max_valence);
   static const std::vector<double>& coeffs() { return coeffs_; }
@@ -449,8 +416,6 @@ public:
   explicit EF(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::FaceHandle& _fh, state_t _target_state) override;
-  MIPS_WARN_WA(Edge  ) // avoid warning
-  MIPS_WARN_WA(Vertex) // avoid warning
 };
 
 
@@ -471,8 +436,6 @@ public:
   explicit FE(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::EdgeHandle& _eh, state_t _target_state) override;
-  MIPS_WARN_WA(Face  ) // avoid warning
-  MIPS_WARN_WA(Vertex) // avoid warning
 };
 
 
@@ -493,8 +456,6 @@ public:
   explicit EdE(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::EdgeHandle& _eh, state_t _target_state) override;
-  MIPS_WARN_WA(Face  ) // avoid warning
-  MIPS_WARN_WA(Vertex) // avoid warning
 };
 
 
@@ -515,13 +476,10 @@ public:
   explicit EdEc(M& _mesh) : Inherited(_mesh) {}
 
   void raise(typename M::EdgeHandle& _eh, state_t _target_state) override;
-  MIPS_WARN_WA(Face  ) // avoid warning
-  MIPS_WARN_WA(Vertex) // avoid warning
 };
 
 // ----------------------------------------------------------------------------
 
-#undef MIPS_WARN_WA
 
 //=============================================================================
 } // END_NS_ADAPTIVE
diff --git a/src/OpenMesh/Tools/Subdivider/Uniform/SubdividerT.hh b/src/OpenMesh/Tools/Subdivider/Uniform/SubdividerT.hh
index cbf6420f..20889a08 100644
--- a/src/OpenMesh/Tools/Subdivider/Uniform/SubdividerT.hh
+++ b/src/OpenMesh/Tools/Subdivider/Uniform/SubdividerT.hh
@@ -166,8 +166,12 @@ protected:
 
   /// \name Overload theses methods
   //@{
-  /// Prepare mesh, e.g. add properties
-  virtual bool prepare( MeshType& _m ) = 0;
+  /** \brief Prepare mesh, e.g. add properties
+   *
+   *  You have to reimplement this function to setup your mesh. The default implementation
+   *  will always return false and therefore block your algorithm.
+   */
+  virtual bool prepare( MeshType& /*_m*/ ) { return false; };
 
   /// Subdivide mesh \c _m \c _n times
   virtual bool subdivide( MeshType& _m, size_t _n, const bool _update_points = true) = 0;
diff --git a/src/OpenMesh/Tools/Utils/Timer.cc b/src/OpenMesh/Tools/Utils/Timer.cc
index 37b85b05..afc67c1e 100644
--- a/src/OpenMesh/Tools/Utils/Timer.cc
+++ b/src/OpenMesh/Tools/Utils/Timer.cc
@@ -163,10 +163,10 @@ public:
     ~TimerImplPosix()
     { }
 
-    virtual void reset(void) { seconds_ = 0.0; }
+    virtual void reset(void) override { seconds_ = 0.0; }
 
-    virtual void start(void) { seconds_ = 0.0; clock_gettime( id_, &start_ ); }
-    virtual void stop(void)
+    virtual void start(void) override { seconds_ = 0.0; clock_gettime( id_, &start_ ); }
+    virtual void stop(void) override
     {
         timespec stop;
         clock_gettime( id_, &stop );
@@ -174,9 +174,9 @@ public:
         seconds_ += ( (double(stop.tv_nsec-start_.tv_nsec)*1e-9) );
     }
 
-    virtual void cont(void)  { clock_gettime( id_, &start_ ); }
+    virtual void cont(void) override { clock_gettime( id_, &start_ ); }
 
-    virtual double seconds() const { return seconds_; }
+    virtual double seconds() override const { return seconds_; }
 
 protected:
    clockid_t id_;
diff --git a/src/OpenMesh/Tools/Utils/Timer.hh b/src/OpenMesh/Tools/Utils/Timer.hh
index f96870b5..b8b3b665 100644
--- a/src/OpenMesh/Tools/Utils/Timer.hh
+++ b/src/OpenMesh/Tools/Utils/Timer.hh
@@ -98,8 +98,12 @@ public:
 
   Timer(void);
 
+  /// Make the timer non copyable
   Timer(const Timer& _other) = delete;
 
+  /// Make the timer non copyable
+  Timer& operator=( const Timer& ) = delete;
+
   ~Timer(void);
 
   /// Returns true if self is in a valid state!
@@ -144,6 +148,8 @@ public:
    */
   static std::string as_string(double seconds, Format format = Automatic);
 
+
+
 public:
 
   //@{