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Adding PCL Nurbs support to ROS

System: Kubuntu 14.04 LTS ROS Indigo PCL 1.7.1

I'm trying to get the tutorial on generating mesh from a cloud using NURBS working. In the beginning it is stated that the on_nurbs (part of surface) module is not included in the upstream version of PCL (for ROS Indigo this is libpcl version 1.7.1-3) and indeed I cannot find it anywhere in my ROS installation (including the required headers also causes errors upon compilation due to the fact that those files are missing). However I have also read that there is a special patch provided by PCL for compatibility with ROS, which I cannot find. How do I proceed if I want to add this feature in particular to an already installed ROS with all upstream PCL packages? I can download the source for 1.7.1, build those but this compatibility issue bothers me a lot. I really don't want to mess up my ROS configuration for something that might not even work at the end. The pcl_ros used for interfacing the PCL library is obviously bound to the version that ROS is shipped with.