系统版本：ubuntu 16.04
sudo rm -r /usr/include/pcl-1.7 /usr/share/pcl /usr/bin/pcl* /usr/lib/libpcl*
sudo apt-get --purge remove libpcl-dev
然后再sudo apt-get update
sudo apt-get install libpcl-dev pcl-tools
其中出现的问题Could not find a package configuration file provided by "pcl_conversions" with any of the following names: pcl_conversionsConfig.cmake pcl_conversions-config.cmake
解决：sudo apt-get install ros-kinetic-pcl-conversions