@josch1337 Thanks for the help.
I am trying to use build the bag2scan node for using my bag data as input to peopleremover. As according to the CMakelist I tried building with "WITH_ROS=ON", "WITH_PYTHON=ON" and "WITH_RIVLIB=ON", where RIVLIB is the dependency for building the bag2scan node. With all the above 3 set to ON, I am not able to build 3DTK. "WITH_RIVLIB=ON" seems to be at fault, as I am not able to build once it is set. I didn't find resource to install RiVlib. Please help.