The clutter-devel package contains the header files and libraries for building a extension library.
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This package contains the libraries, header files other development files for GTK+ 3.
The clutter-gtk-devel package contains libraries and header files for building a extension library for the clutter-gtk.
Library for clutter embedded into every GNOME application
Clutter-GTK is a library providing facilities to integrate Clutter into GTK+ applications and vice versa. Clutter-GTK provides a GTK+ widget, GtkClutterEmbed, for embedding the a Clutter stage into any GtkContainer; and GtkClutterActor, a Clutter actor for embedding any GtkWidget inside a Clutter stage.