instantiate SymbolicConfig

cpp/Point2.h

@@ -74,8 +74,7 @@ namespace gtsam {
   /** Lie group functions */
 
   /** Global print calls member function */
-  inline void print(const Point2& p, const std::string& s) { p.print(s); }
-  inline void print(const Point2& p) { p.print(); }
+  inline void print(const Point2& p, const std::string& s = "Point2") { p.print(s); }
 
   /** Dimensionality of the tangent space */
   inline size_t dim(const Point2& obj) { return 2; }

cpp/SymbolicFactorGraph.cpp

@@ -20,6 +20,8 @@ using namespace std;
 
 namespace gtsam {
 
+	INSTANTIATE_LIE_CONFIG(Symbol, Point2)
+
 	// Explicitly instantiate so we don't have to include everywhere
 	template class FactorGraph<SymbolicFactor>;