Modern C++ doesn't want to give external linkage to anonymous structs
Index: geo/drgeo_dialog.cc
--- geo/drgeo_dialog.cc.orig
+++ geo/drgeo_dialog.cc
@@ -38,7 +38,7 @@ static GtkWidget *drgeoEditDialog = NULL, *drgeoEntry;
 // Used in the style dialod callback, I know it's ugly, but so easy
 static drgeoFigure *selected_figure;
 
-struct
+struct fooclang
 {
   drgeoPoint mouse;
   drgeoFigure *figure;