In file included from ../../../source/gui/CDropDown.h:23,
                 from ../../../source/gui/CDropDown.cpp:20:
../../../source/gui/IList.h:4:7: warning: ‘class IList’ has virtual functions and accessible non-virtual destructor [-Wnon-virtual-dtor]
    4 | class IList
      |       ^~~~~
In file included from ../../../source/gui/CDropDown.cpp:20:
../../../source/gui/CDropDown.h:27:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   27 | class CDropDown : public IList, IGUIObject
      |       ^~~~~~~~~
In file included from ../../../source/gui/CDropDownImpl.h:4,
                 from ../../../source/gui/CDropDown.cpp:22:
../../../source/gui/CListImpl.h:36:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   36 | class CListImpl : public IList, public IGUIScrollBarOwner, public IGUITextOwner
      |       ^~~~~~~~~
In file included from ../../../source/gui/CDropDown.cpp:22:
../../../source/gui/CDropDownImpl.h:15:16: error: extra qualification ‘CDropDownImpl::’ on member ‘GetBufferedZ’ [-fpermissive]
   15 |  virtual float CDropDownImpl::GetBufferedZ() const;
      |                ^~~~~~~~~~~~~
In file included from ../../../source/gui/CListSelectionSingleImpl.h:1,
                 from ../../../source/gui/CDropDown.cpp:23:
../../../source/gui/IListSelection.h:4:7: warning: ‘class IListSelection’ has virtual functions and accessible non-virtual destructor [-Wnon-virtual-dtor]
    4 | class IListSelection
      |       ^~~~~~~~~~~~~~
In file included from ../../../source/gui/CDropDown.cpp:23:
../../../source/gui/CListSelectionSingleImpl.h:3:7: warning: base class ‘class IListSelection’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
    3 | class CListSelectionSingleImpl: public IListSelection, IGUIObject
      |       ^~~~~~~~~~~~~~~~~~~~~~~~
../../../source/gui/CDropDown.cpp: In member function ‘virtual void CDropDown::SetSelection(IListSelection*)’:
../../../source/gui/CDropDown.cpp:46:52: warning: unused parameter ‘selection’ [-Wunused-parameter]
   46 | void CDropDown::SetSelection(class IListSelection* selection)
      |                              ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
make[1]: *** [gui.make:183: obj/gui_Release/CDropDown.o] Error 1
make[1]: *** Waiting for unfinished jobs....
In file included from ../../../source/gui/CListImpl.h:23,
                 from ../../../source/gui/CDropDownImpl.h:4,
                 from ../../../source/gui/CDropDownImpl.cpp:20:
../../../source/gui/IList.h:4:7: warning: ‘class IList’ has virtual functions and accessible non-virtual destructor [-Wnon-virtual-dtor]
    4 | class IList
      |       ^~~~~
In file included from ../../../source/gui/CDropDownImpl.h:4,
                 from ../../../source/gui/CDropDownImpl.cpp:20:
../../../source/gui/CListImpl.h:36:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   36 | class CListImpl : public IList, public IGUIScrollBarOwner, public IGUITextOwner
      |       ^~~~~~~~~
In file included from ../../../source/gui/CDropDownImpl.cpp:20:
../../../source/gui/CDropDownImpl.h:15:16: error: extra qualification ‘CDropDownImpl::’ on member ‘GetBufferedZ’ [-fpermissive]
   15 |  virtual float CDropDownImpl::GetBufferedZ() const;
      |                ^~~~~~~~~~~~~
In file included from ../../../source/gui/CDropDown.h:23,
                 from ../../../source/gui/CGUI.cpp:29:
../../../source/gui/IList.h:4:7: warning: ‘class IList’ has virtual functions and accessible non-virtual destructor [-Wnon-virtual-dtor]
    4 | class IList
      |       ^~~~~
In file included from ../../../source/gui/CGUI.cpp:29:
../../../source/gui/CDropDown.h:27:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   27 | class CDropDown : public IList, IGUIObject
      |       ^~~~~~~~~
In file included from ../../../source/gui/CGUI.cpp:32:
../../../source/gui/CListSingle.h:27:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   27 | class CListSingle: public IList, IGUIObject
      |       ^~~~~~~~~~~
In file included from ../../../source/gui/CGUI.cpp:33:
../../../source/gui/CListMultiple.h:26:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   26 | class CListMultiple: public IList, IGUIObject
      |       ^~~~~~~~~~~~~
In file included from ../../../source/gui/CGUI.cpp:34:
../../../source/gui/COListSingle.h:26:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   26 | class COListSingle: public IList, IGUIObject
      |       ^~~~~~~~~~~~
In file included from ../../../source/gui/CGUI.cpp:35:
../../../source/gui/COListMultiple.h:26:7: warning: base class ‘class IList’ has accessible non-virtual destructor [-Wnon-virtual-dtor]
   26 | class COListMultiple: public IList, IGUIObject
      |       ^~~~~~~~~~~~~~
In file included from ../../../source/gui/CDropDownImpl.cpp:31:
../../../source/gui/IListSelection.h:4:7: warning: ‘class IListSelection’ has virtual functions and accessible non-virtual destructor [-Wnon-virtual-dtor]
    4 | class IListSelection
      |       ^~~~~~~~~~~~~~
make[1]: *** [gui.make:186: obj/gui_Release/CDropDownImpl.o] Error 1
make: *** [Makefile:127: gui] Error 2