Linking Ada to C++ Overloaded Functions and Methods

[Ron Wills <ron.rwsoft@gmail.com>]

I know that both Ada and C++ can overload functions and methods. The problem I'm having is when I'm trying to link Ada to overload C++ functions. I know I could use different Ada names, but if it's possible to keep the same names in Ada it would save a lot of re-coding.

An example is from the FLTK library. The "draw_box" method from the Fl_Widget class is overloaded and I get the following from g++ -fdump-ada-spec.

procedure draw_box (this : access constant Fl_Widget'Class);
pragma Import (CPP, draw_box, "_ZNK9Fl_Widget8draw_boxEv");

procedure draw_box
  (this : access constant Fl_Widget'Class;
   t : Fl_Enumerations_H.Fl_Boxtype;
   c : Fl_Enumerations_H.Fl_Color);  -- /usr/include/Fl/Fl_Widget.H:181
pragma Import (CPP, draw_box, "_ZNK9Fl_Widget8draw_boxE10Fl_Boxtypej");

The C++ name mangling works to uniquely identify the C++ methods, but the compiler is choking on the Ada names as already being declared.

fl_fl_widget_h.ads:171:07: entity "draw_box" was previously imported
fl_fl_widget_h.ads:171:07: (pragma "Import" applies to all previous entities)
fl_fl_widget_h.ads:171:07: import not allowed for "draw_box" declared at line 164
fl_fl_widget_h.ads:181:07: entity "draw_box" was previously imported
fl_fl_widget_h.ads:181:07: (pragma "Import" applies to all previous entities)
fl_fl_widget_h.ads:181:07: import not allowed for "draw_box" declared at line 167

Is there a way to use overloaded Ada names with C++ or do I need to find a unique Ada name for every C++ overload method?