...Installation instructions are provided in the INSTALL file of the project and in https://sourceforge.net/p/trjcavity/wiki/Home/#ffad
If you need support using this tool (or report bugs), please post it in the discussion forum.
Remarks: v2 runs in parallel and supports GROMACS v5.1+ series. If you want to continue on using GROMACS v4.x, please use trj_cavity_v1.1.