for seome reason gcc does not type cast Gtk::TreeRow to Gtk::ListStore
Created attachment 275383 [details]
"If you need support, post the output of 'emerge --info =media-gfx/k3d-0.7.11.0-r1', the complete build log and the output of 'emerge -pqv =media-gfx/k3d-0.7.11.0-r1'"
One down, two to go ;)
These other steps are important, for instance there will be information about your toolchain.
Created attachment 275545 [details]
emerge -pqv =media-gfx/k3d-0.7.11.0-r1
media-gfx/k3d-0.7.11.0-r1 USE="graphviz jpeg nls openexr png python tiff truetype -3ds -cuda -gnome -gts -imagemagick"
With dev-cpp/gtkmm-2.22.0 does not generate this error
with dev-cpp/gtkmm-2.24.0 does.
Headers diff for both versions shows that ComboBox has (in 2.24) new definitions and therefore automatic type cast does not work.
Created attachment 275559 [details, diff]
fix gtkmm-2.24 type cast problem
This fixes this one particular problem with gtkmm-2.24
Created attachment 275611 [details, diff]
fix gtkmm-2.24 type cast problem, few more
This only shows where problem is. Backward compatiblile solution (with gtkmm 2.22) would be typecast to proper pointer type.
I can confirm this error with gtkmm-2.24 on ~amd64
*** Bug 379083 has been marked as a duplicate of this bug. ***