I can't build the code

[Fengtu Wang]

Starting >>> littleslam_ros2
--- stderr: littleslam_ros2
CMake Error at CMakeLists.txt:18 (find_package):
By not providing "FindPCL.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "PCL", but
CMake did not find one.

Could not find a package configuration file provided by "PCL" (requested
version 1.8) with any of the following names:

PCLConfig.cmake
pcl-config.cmake

Add the installation prefix of "PCL" to CMAKE_PREFIX_PATH or set "PCL_DIR"
to a directory containing one of the above files. If "PCL" provides a
separate development package or SDK, be sure it has been installed.

---

Failed <<< littleslam_ros2 [ Exited with code 1 ]

Summary: 0 packages finished [15.1s]
1 package failed: littleslam_ros2
1 package had stderr output: littleslam_ros2

thanks for your time.

[Ryohei Sasaki]

Is a PCL installed in your PC?

In ubuntu, You can install it in the following way.

sudo apt install libpcl-dev

And, I didn't add a dependency about a PCL in package.xml, so I did it.
You can also install it by rosdep.
https://github.com/rsasaki0109/littleslam_ros2/blob/master/package.xml#L15