Forked from https://github.com/HKUST-Aerial-Robotics/A-LOAM/
I fixed some issues to make it work fine with ubuntu20 and noetic.
Check the source abovem but these should be enough: Ceres Solver , PCL and PCL-conversitions
sudo apt install libceres-dev libpcl-dev ros-noetic-pcl-conversions
Thanks for LOAM(J. Zhang and S. Singh. LOAM: Lidar Odometry and Mapping in Real-time) and LOAM_NOTED.