#include <pbd/touchable.h>
+#include "gtkmm2ext/visibility.h"
+
namespace Gtkmm2ext {
-class PopUp : public Gtk::Window, public Touchable
+class LIBGTKMM2EXT_API PopUp : public Gtk::Window, public Touchable
{
public:
PopUp (Gtk::WindowPosition pos, unsigned int show_for_msecs = 0,