CMake Error at CMakeLists.txt:44 (rosidl_get_typesupport_target):

[wenleiwang]

I am trying to compile LIO-SAM on Ubuntu 20.04 with foxy. Below is the error I got after the command

~/ros2_ws$ colcon build
Starting >>> lio_sam
--- stderr: lio_sam
** WARNING ** io features related to pcap will be disabled
** WARNING ** io features related to png will be disabled
** WARNING ** io features related to libusb-1.0 will be disabled
CMake Error at CMakeLists.txt:44 (rosidl_get_typesupport_target):
Unknown CMake command "rosidl_get_typesupport_target".

---

Failed <<< lio_sam [3.55s, exited with code 1]

Summary: 0 packages finished [3.79s]
1 package failed: lio_sam
1 package had stderr output: lio_sam

cd ~/ros2_ws/src
git clone https://github.com/TixiaoShan/LIO-SAM.git
cd LIO-SAM
git checkout ros2
cd ..
cd ..
colcon build

Anyone knows what are the issues here?