The robust control for a class of linear delay systems of the form \[ \dot x(t)= \sum^k_{i=0} A_ix(t- t_i)+ \sum^m_{i=0} B_iu(t- \tau_i), \]
\[ y(t)= \sum^l_{i=0} C_ix(t- \sigma_i)+ \sum^p_{i=0} d_i u(t-v_i) \] is discussed by using a frequency-domain approach which considers the parametrized controllers \[ C= (X+ DN)(Y+ NQ)^{-1}, \] where \(X\), \(Y\) are the Bézout factors of the plant \(G(s)\). It is shown that these Bézout factors can be chosen to be continuous in the gap topology with respect to variations of the coprime factors. The \(L^1\)-optimal tracking problem is solved simultaneously with optimal robust stabilization.