graphics/clutter-gtk-0.10.8 build failure: G_CONST_RETURN is unknown

[Yuri]

Getting many such errors after the recent ports upgrade:
/usr/local/include/clutter-1.0/cogl/cogl-matrix.h:277: error: expected 
'=', ',', ';', 'asm' or '__attribute__' before 'float'^M
In file included from /usr/local/include/clutter-1.0/cogl/cogl.h:38,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter-units.h:36,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter-types.h:32,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter-actor-meta.h:8,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter-action.h:32,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter.h:33,^M
                  from ./gtk-clutter-embed.h:31,^M
                  from ./gtk-clutter-embed.c:43:^M
/usr/local/include/clutter-1.0/cogl/cogl-material.h:889: error: expected 
'=', ',', ';', 'asm' or '__attribute__' before 'GList'^M
In file included from 
/usr/local/include/clutter-1.0/clutter/clutter-types.h:32,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter-actor-meta.h:8,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter-action.h:32,^M
                  from 
/usr/local/include/clutter-1.0/clutter/clutter.h:33,^M
                  from ./gtk-clutter-embed.h:31,^M
                  from ./gtk-clutter-embed.c:43:^M

G_CONST_RETURN seems to be a problem.
x11-toolkits/gtk30 failed to upgrade too but later than clutter-gtk. So 
is this a case of the missing dependency?
graphics/clutter-gtk should depend on x11-toolkits/gtk30 ?

Thanks,
Yuri