a ParaView plugin for GADGET (HDF5) files for ParaView 5.12
cd ParaViewGadgetPlugin mkdir build; cd build
assuming your new ParaView install is in your PATH
ccmake ..; make
After successful compilation, the directory "./lib64/paraview-5.12/plugins/pvGadgetReader" contains the shared libs
Thus,
export PV_PLUGIN_PATH=/ParaViewGadgetPlugin/build/lib64/paraview-5.12/plugins/pvGadgetReader