And again fixed some compiler problems.

extensions/GeometryTools.cc

@@ -259,6 +259,8 @@ bool intersection_box_box_2d(double min_corner0[], double max_corner0[],
     if (point_in_box_2d(p, min_corner0, max_corner0))
       return true;
   }
+
+  return false;
 }
 
 //----------------------------------------< intersection_triangle_box_2d >
@@ -1288,6 +1290,8 @@ bool intersection_box_box_3d(double min_corner0[], double max_corner0[],
     if (point_in_box_3d(p, min_corner0, max_corner0))
       return true;
   }
+
+  return false;
 }
 
 //----------------------------------------< intersection_triangle_box_3d >

extensions/GeometryTools.hh

 namespace meshconv {
 
   template<int dow>
-  void coordinate_transform(double x[], double shift[], double scale[], double alpha=0.0, double beta=0.0)
+  void coordinate_transform(double x[], double shift[], double scale[], double alpha, double beta)
   {
     mtl::dense2D<double> Rx(dow,dow),Ry(dow,dow),T(dow,dow),S(dow,dow);
     Rx = 1.0;
@@ -38,4 +38,4 @@ namespace meshconv {
       x[i] = coords[i]+shift[i];
   }
 
-} // end namespace meshconv
\ No newline at end of file
+} // end namespace meshconv