Performance: Linking

• The new visibility attribute

  • http://www.nedprod.com/programs/gccvisibility.html
• #define DLLEXPORT __attribute__ ((visibility(“default”))
• #define DLLLOCAL __attribute__ ((visibility(“hidden”))
• class Visible {
• private:
• virtual void AvirtualMethod();
  • public:
    • DLLLOCAL void InternalToThisLibraryMethod();
    • DLLEXPORT void PublicMethod();
• };