message: Compiles :D But does not link
diff: @@ -699,7 +699,7 @@ namespace RINGMesh {
  private:
  /// Attached Mesh
  - std::unique_ptr< SurfaceMeshBase2< 3 > > mesh_;
  + std::unique_ptr< SurfaceMesh2< 3 > > mesh_;
  /// Attribute storing the surface index per polygon
  GEO::Attribute< index_t > surface_id_;
  