/usr/include/ClanLib-1.0/ClanLib/GUI/ is in libclanlib-dev 1.0~svn3827-6.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ClanLib-1.0/ClanLib/GUI/button.h
/usr/include/ClanLib-1.0/ClanLib/GUI/checkbox.h
/usr/include/ClanLib-1.0/ClanLib/GUI/component.h
/usr/include/ClanLib-1.0/ClanLib/GUI/component_manager.h
/usr/include/ClanLib-1.0/ClanLib/GUI/component_move_handler.h
/usr/include/ClanLib-1.0/ClanLib/GUI/component_resize_handler.h
/usr/include/ClanLib-1.0/ClanLib/GUI/component_style.h
/usr/include/ClanLib-1.0/ClanLib/GUI/component_type.h
/usr/include/ClanLib-1.0/ClanLib/GUI/deck.h
/usr/include/ClanLib-1.0/ClanLib/GUI/filedialog.h
/usr/include/ClanLib-1.0/ClanLib/GUI/frame.h
/usr/include/ClanLib-1.0/ClanLib/GUI/gui_manager.h
/usr/include/ClanLib-1.0/ClanLib/GUI/image.h
/usr/include/ClanLib-1.0/ClanLib/GUI/inputbox.h
/usr/include/ClanLib-1.0/ClanLib/GUI/inputbox_stylebase.h
/usr/include/ClanLib-1.0/ClanLib/GUI/inputdialog.h
/usr/include/ClanLib-1.0/ClanLib/GUI/label.h
/usr/include/ClanLib-1.0/ClanLib/GUI/layout.h
/usr/include/ClanLib-1.0/ClanLib/GUI/listbox.h
/usr/include/ClanLib-1.0/ClanLib/GUI/listitem.h
/usr/include/ClanLib-1.0/ClanLib/GUI/menu.h
/usr/include/ClanLib-1.0/ClanLib/GUI/menu_item.h
/usr/include/ClanLib-1.0/ClanLib/GUI/menu_node.h
/usr/include/ClanLib-1.0/ClanLib/GUI/messagebox.h
/usr/include/ClanLib-1.0/ClanLib/GUI/progressbar.h
/usr/include/ClanLib-1.0/ClanLib/GUI/radiobutton.h
/usr/include/ClanLib-1.0/ClanLib/GUI/radiogroup.h
/usr/include/ClanLib-1.0/ClanLib/GUI/richedit.h
/usr/include/ClanLib-1.0/ClanLib/GUI/richedit_paragraph.h
/usr/include/ClanLib-1.0/ClanLib/GUI/scrollbar.h
/usr/include/ClanLib-1.0/ClanLib/GUI/setupgui.h
/usr/include/ClanLib-1.0/ClanLib/GUI/stylemanager.h
/usr/include/ClanLib-1.0/ClanLib/GUI/treeitem.h
/usr/include/ClanLib-1.0/ClanLib/GUI/treenode.h
/usr/include/ClanLib-1.0/ClanLib/GUI/treeview.h
/usr/include/ClanLib-1.0/ClanLib/GUI/window.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/button_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/checkbox_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/frame_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/image_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/inputbox_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/label_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/listbox_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/menu_item_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/menu_node_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/menu_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/progressbar_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/radiobutton_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/richedit_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/scrollbar_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/stylemanager_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/treeitem_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/treeview_silver.h
/usr/include/ClanLib-1.0/ClanLib/GUIStyleSilver/window_silver.h