guarding implementation against compilation under iOS SDK < 13

src/osx/iphone/menu.mm

@@ -28,6 +28,8 @@
 
 #include "wx/menu.h"
 
+#if wxUSE_MENUS
+
 #include "wx/osx/private.h"
 
 // other standard headers
@@ -322,3 +324,5 @@ wxMenuImpl* wxMenuImpl::Create( wxMenu* peer, const wxString& title )
     wxMenuImpl* c = new wxMenuCocoaImpl( peer, nil );
     return c;
  }
+
+#endif

src/osx/iphone/menuitem.mm

@@ -13,6 +13,8 @@
 #include "wx/menuitem.h"
 #include "wx/stockitem.h"
 
+#if wxUSE_MENUS
+
 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/log.h"
@@ -328,3 +330,5 @@ wxMenuItemImpl* wxMenuItemImpl::Create( wxMenuItem* peer, wxMenu *pParentMenu,
     c = new wxMenuItemCocoaImpl( peer, item );
     return c;
 }
+
+#endif