/usr/include/CGAL/IO/pixmaps/ is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/CGAL/IO/pixmaps/alpha_shape.xpm
/usr/include/CGAL/IO/pixmaps/arrow.xpm
/usr/include/CGAL/IO/pixmaps/back.xpm
/usr/include/CGAL/IO/pixmaps/circle.xpm
/usr/include/CGAL/IO/pixmaps/constrained.xpm
/usr/include/CGAL/IO/pixmaps/demoicon.xpm
/usr/include/CGAL/IO/pixmaps/focus.xpm
/usr/include/CGAL/IO/pixmaps/focus1.xpm
/usr/include/CGAL/IO/pixmaps/focus1_mask.xpm
/usr/include/CGAL/IO/pixmaps/focus2.xpm
/usr/include/CGAL/IO/pixmaps/focus2_mask.xpm
/usr/include/CGAL/IO/pixmaps/focus3.xpm
/usr/include/CGAL/IO/pixmaps/focus3_mask.xpm
/usr/include/CGAL/IO/pixmaps/forward.xpm
/usr/include/CGAL/IO/pixmaps/greene_approx.xpm
/usr/include/CGAL/IO/pixmaps/hand.xpm
/usr/include/CGAL/IO/pixmaps/handtool.xpm
/usr/include/CGAL/IO/pixmaps/holddown.xpm
/usr/include/CGAL/IO/pixmaps/iso_rectangle.xpm
/usr/include/CGAL/IO/pixmaps/line.xpm
/usr/include/CGAL/IO/pixmaps/min_parallelogram.xpm
/usr/include/CGAL/IO/pixmaps/min_rectangle.xpm
/usr/include/CGAL/IO/pixmaps/mouse_coord.xpm
/usr/include/CGAL/IO/pixmaps/movepoint.xpm
/usr/include/CGAL/IO/pixmaps/nearest_vertex.xpm
/usr/include/CGAL/IO/pixmaps/notool.xpm
/usr/include/CGAL/IO/pixmaps/optimal_convex.xpm
/usr/include/CGAL/IO/pixmaps/point.xpm
/usr/include/CGAL/IO/pixmaps/points.xpm
/usr/include/CGAL/IO/pixmaps/polygon.xpm
/usr/include/CGAL/IO/pixmaps/rotation.xpm
/usr/include/CGAL/IO/pixmaps/show_polygon.xpm
/usr/include/CGAL/IO/pixmaps/triangulation.xpm
/usr/include/CGAL/IO/pixmaps/voronoi.xpm
/usr/include/CGAL/IO/pixmaps/ymonotone.xpm
/usr/include/CGAL/IO/pixmaps/zoom_in.xpm
/usr/include/CGAL/IO/pixmaps/zoom_in_rect.xpm
/usr/include/CGAL/IO/pixmaps/zoom_out.xpm