[en] Absolute cross sections for most evaporation channels consecutive to the ¹⁶O + ⁶³Cu and ³⁴S + ⁴⁵Sc complete fusion reactions have been measured through observation of the corresponding γ-activities at excitation energies of the ⁷⁹Rb compound nucleus ranging between 32 and 74 MeV. They give evidence for an angular momentum population of the ⁷⁹Rb compound nucleus independent of the entrance channel. The energy variations of the complete-fusion cross sections are compared to model predictions with and without friction. This comparison suggests that the ³⁴S + ⁴⁵Sc system could be deformed at the contact position. The cross sections of most deexcitation channels are compared with the predictions of the codes ALICE and JULIAN. The results show that γ-ray competition with particle emission in the deexcitation of the ⁷⁹Rb compound nucleus is very important. From these comparisons, a detailed analysis is performed on the approximations made in both evaporation codes. (orig.)