A Strong Maximum Principle and a Compact Support Principle for infinity Laplacian

In this article we find necessary and sufficient conditions for the strong maximum principle and compact support principle for non-negative solutions to the quasilinear elliptic inequalities $$Delta_infty u + G(|Du|) - f(u),leq 0quad text{in}; mathcal{O},$$ and $$Delta_infty u + G(|Du|) - f(u),geq 0quad text{in}; mathcal{O},$$ where $mathcal{O}$ denotes the infinity Laplacian, $G$ is an appropriate continuous function and $f$ is a nondecreasing, continuous function with $f(0)=0$.