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" 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.

这是一个CMake构建系统的错误信息，意思是在构建项目时，CMake无法找到名为“FindPCL.cmake”的模块，该模块是用于在CMake中设置PCL（Point Cloud Library）相关的一些参数和路径的。由于CMake无法找到该模块，因此无法找到PCL的配置文件。解决方法是将PCL的安装路径添加到CMAKE_PREFIX_PATH中，或者设置PCL_DIR变量为包含PCL配置文件的目录。如果PCL提供了独立的开发包或SDK，请确保已经安装。