Aurelien Chedjou’s first half strike was enough for the Indomitable Lions to claim first place in their group, finishing on 13 points and four points above their adversaries.
Cameroon came into the fixture knowing that anything less than a draw would see them fail to qualify for the play-off round of the qualifiers of the World Cup, with a defeat meaning Libya would top the group.
Libya came out showing they meant business by testing Cameroonian shot-stopper Charles Itandje in the third minute through Mohamed El Mughrabi’s shot.
Samuel Eto’o excited the home fans with his 22nd minute free-kick which forced Libyan ‘keeper Mohamed Nashnush to tip the ball out for a corner.
The Indomitable Lions deservedly broke the deadlock when Enoh Eyong's corner kick found Galatasaray's centre back Aurelien Chedjou.
The towering stopper met the ball for a successful header into the back of the net, making it 1-0 to Cameroon just minutes before the break.
Eto’o, who was celebrating his landmark 110th cap for Cameroon, had to be replaced by Jaques Zoua following a rough challenge on the hour.
Under the guidance of Alex Song, Eric Choupo-Moting and Jacques Zoua, the hosts threatened to add a second goal as the second half progressed.
However, the Libyans could have equalised through Omar Abdelsalam in the 83rd and 89th minute, but they failed to fashion any sort of route to force a comeback.
The match ended 1-0 in favour of the home side, which saw them become the tenth and final team to qualify for the play-offs.
They join Ivory Coast, Egypt, Algeria, Ghana, Ethiopia, Nigeria, Burkina Faso, Cape Verde and Senegal.
The draw will take place in Cairo on 16 September.
It will be based on the latest Fifa rankings to be released on Thursday and will create five two-leg ties, with the winners going to the finals in Brazil.
The decisive games will be played in October and November.
- Match Summary