ubuntu搭建PCL和liblas过程中遇到的一些问题汇总

装这两个库真的是要吐了, 本文不教装环境，仅仅记录本人在装环境过程中出现的关键问题
liblas和PCL的安装就不多说了，网上教程一大堆，最重要的要了解有什么依赖库再动手，比如说boost，eigen，VTK，numpy，cmake等等一大堆，先装依赖库，装好了之后再去编译源码，关于PCL库没啥好说的，就是依赖库装好按着流程来就行了。
推荐链接：https://blog.youkuaiyun.com/sinat_28752257/article/details/79169647
在安装pcl的过程中，cmake…之后可以检查你的库是否能正常找到：
– The C compiler identification is GNU 5.4.0
– The CXX compiler identification is GNU 5.4.0
– 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 PkgConfig: /usr/bin/pkg-config (found version “0.29.1”)
– Could NOT find ClangFormat (missing: ClangFormat_EXECUTABLE ClangFormat_VERSION) (Required is at least version “10”)
– Performing Test HAVE_MARCH
– Performing Test HAVE_MARCH - Success
– Using CPU native flags for SSE optimization: -march=native
– Performing Test HAVE_MM_MALLOC
– Performing Test HAVE_MM_MALLOC - Success
– Performing Test HAVE_POSIX_MEMALIGN
– Performing Test HAVE_POSIX_MEMALIGN - Success
– Performing Test HAVE_SSE4_2_EXTENSIONS
– Performing Test HAVE_SSE4_2_EXTENSIONS - Success
– Performing Test HAVE_SSE4_1_EXTENSIONS
– Performing Test HAVE_SSE4_1_EXTENSIONS - Success
– Performing Test HAVE_SSSE3_EXTENSIONS
– Performing Test HAVE_SSSE3_EXTENSIONS - Success
– Performing Test HAVE_SSE3_EXTENSIONS
– Performing Test HAVE_SSE3_EXTENSIONS - Success
– Performing Test HAVE_SSE2_EXTENSIONS
– Performing Test HAVE_SSE2_EXTENSIONS - Success
– Performing Test HAVE_SSE_EXTENSIONS
– Performing Test HAVE_SSE_EXTENSIONS - Success
– Try OpenMP C flag = [-fopenmp]
– Performing Test OpenMP_FLAG_DETECTED
– Performing Test OpenMP_FLAG_DETECTED - Success
– Try OpenMP CXX flag = [-fopenmp]
– Performing Test OpenMP_FLAG_DETECTED
– Performing Test OpenMP_FLAG_DETECTED - Success
– Found OpenMP: -fopenmp
– Found OpenMP
– Looking for pthread.h
– Looking for pthread.h - found
– Looking for pthread_create
– Looking for pthread_create - found
– Found Threads: TRUE
– Checking for module ‘eigen3’
– Found eigen3, version 3.2.92
– Found Eigen: /usr/include/eigen3 (Required is at least version “3.1”)
– Eigen found (include: /usr/include/eigen3, version: 3.2.92)
– Checking for module ‘flann>=1.7.0’
– Found flann, version 1.8.4
– Found FLANN: /usr/lib/x86_64-linux-gnu/libflann_cpp.so (Required is at least version “1.7.0”)
– Found LIBUSB_1: /usr/lib/x86_64-linux-gnu/libusb-1.0.so
– Checking for module ‘libusb-1.0’
– Found libusb-1.0, version 1.0.20
– Found USB_10: /usr/lib/x86_64-linux-gnu/libusb-1.0.so
– Found OpenNI: /usr/lib/libOpenNI.so
– OpenNI found (include: /usr/include/ni, lib: /usr/lib/libOpenNI.so)
– Could NOT find OpenNI2 (missing: OPENNI2_LIBRARIES OPENNI2_INCLUDE_DIRS)
– OpenNI2 grabber support: not building because OpenNI2 not found
– Could NOT find ENSENSO (missing: ENSENSO_LIBRARIES ENSENSO_INCLUDE_DIRS)
– IDS-Imaging Ensenso camera support: not building because Ensenso not found
– Could NOT find davidSDK (missing: DAVIDSDK_LIBRARY DAVIDSDK_INCLUDE_DIR)
– David Vision Systems SDK support: not building because davidSDK not found
– Could NOT find DSSDK (missing: DSSDK_LIBRARIES DSSDK_INCLUDE_DIRS)
– DepthSense SDK support: not building because DSSDK not found
– Could NOT find RSSDK (missing: RSSDK_LIBRARIES RSSDK_INCLUDE_DIRS)
– RealSense SDK support: not building because RSSDK not found
– Could NOT find RSSDK2
– RealSense SDK 2.0 (librealsense) support: not building because RSSDK2 not found
– Checking for module ‘metslib’
– No package ‘metslib’ found
– Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version “1.2.8”)
– Found PNG: /usr/lib/x86_64-linux-gnu/libpng.so (found version “1.2.54”)
– Found Qhull: optimized;/usr/lib/x86_64-linux-gnu/libqhull.so;debug;/usr/lib/x86_64-linux-gnu/libqhull.so
– QHULL found (include: /usr/include, lib: optimized;/usr/lib/x86_64-linux-gnu/libqhull.so;debug;/usr/lib/x86_64-linux-gnu/libqhull.so)
– VTK_MAJOR_VERSION 7, rendering backend: OpenGL2
– VTK found (include: /usr/local/include/vtk-7.1, libs: vtkChartsCore;vtkCommonColor;vtkCommonCore;vtksys;vtkCommonDataModel;vtkCommonMath;vtkCommonMisc;vtkCommonSystem