Build synthesize；CMake Error at CMakeLists.txt:22 (find_package) ； Could not find a package configuration file provided by "PCL"

[WL9395]

When I execute "cmake .." output errors as follows. I can't solve them, especially：

-- The C compiler identification is GNU 4.8.5
-- The CXX compiler identification is GNU 4.8.5
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found Nlopt: /usr/local/lib/libnlopt.so
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Found CUDA: /usr/local/cuda-9.0 (found version "9.0")
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
CMake Error at CMakeLists.txt:22 (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" 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.

-- Configuring incomplete, errors occurred!
See also "/media/wl/work/PoseCNN/lib/synthesize/build/CMakeFiles/CMakeOutput.log".
See also "/media/wl/work/PoseCNN/lib/synthesize/build/CMakeFiles/CMakeError.log".