Problem with compiling Gtk-Perl

[skidoo ds5 agh edu pl]

I get the 0.7005 version of Gtk-Perl. When I try to compile I get an
error:
In file included from GtkGdkGL.xs:7:
build/GtkGLAreaDefs.h:24:29: gtkgl/gtkglarea.h: No such file or
directory.

I couldn't find that file. I get my version from
http://projects.prosa.it/gtkperl/download.html. Can You help me ?

Yours sincerely

Lukasz Chrustek