Cape Verde drew 1-1 with the António Conceiço side in their last Group A match to finish third in the standings.
The hosts kept their unbeaten record going in the tournament, finishing first in their group with seven points after three games.
Vincent Aboubakar, the Cameroon captain scored the game’s first goal right before halftime at Paul Biya Stadium, bringing his record to five goals in three games.
Meanwhile, Ethiopia was sent out of the tournament in Bafoussam after a 1-1 draw with Burkina Faso.
The Walias only got one point from three games, putting them at the bottom of the group standings.