使用 Cmake 构建 PCL 教程时如何处理 'Policy CMP0074 is not set' 错误？
How to handle with 'Policy CMP0074 is not set' error while using Cmake to build PCL tutorials?
我想完成这个基础教程。
http://pointclouds.org/documentation/tutorials/writing_pcd.php#writing-pcd
很简单。当我准备 cmakelist 和 .cpp 文件时，我使用 cmake gui 运行 它们，但出现此错误。我安装了 pcl 1.9.1，所以我为 visual studio 2017 64x.
构建文件
Selecting Windows SDK version 10.0.17134.0 to target Windows
10.0.17763. The C compiler identification is MSVC 19.15.26726.0 The CXX compiler identification is MSVC 19.15.26726.0 Check for working C
compiler: C:/Program Files (x86)/Microsoft Visual
Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe
Check for working C compiler: C:/Program Files (x86)/Microsoft Visual
Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe
-- 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: C:/Program Files (x86)/Microsoft
Visual
Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe
Check for working CXX compiler: C:/Program Files (x86)/Microsoft
Visual
Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe
-- works Detecting CXX compiler ABI info Detecting CXX compiler ABI info - done Detecting CXX compile features Detecting CXX compile
features - done CMake Warning (dev) at CMakeLists.txt:5
(find_package): Policy CMP0074 is not set: find_package uses
_ROOT variables. Run "cmake --help-policy CMP0074" for
policy details. Use the cmake_policy command to set the policy and
suppress this warning.
Environment variable PCL_ROOT is set to:
C:\libraries\PCL 1.9.1
For compatibility, CMake is ignoring the variable. This warning is
for project developers. Use -Wno-dev to suppress it.
Found Eigen: C:/libraries/PCL 1.9.1/3rdParty/Eigen/eigen3 Eigen
found (include: C:/libraries/PCL 1.9.1/3rdParty/Eigen/eigen3, version:
3.3.5) Looking for pthread.h Looking for pthread.h - not found Found Threads: TRUE Found Boost: C:/libraries/PCL
1.9.1/3rdParty/Boost/include/boost-1_68 (found suitable version "1.68.0", minimum required is "1.40.0") found components: system
filesystem thread date_time iostreams serialization chrono atomic
regex Found FLANN: C:/libraries/PCL
1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib FLANN found (include: C:/libraries/PCL 1.9.1/3rdParty/FLANN/include, lib:
optimized;C:/libraries/PCL
1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s-gd.lib) FLANN found (include: C:/libraries/PCL 1.9.1/3rdParty/FLANN/include, lib:
optimized;C:/libraries/PCL
1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s-gd.lib) Found OpenNI2: C:/libraries/OpenNI2/Lib/OpenNI2.lib OpenNI2 found (include:
C:/libraries/OpenNI2/Include, lib:
C:/libraries/OpenNI2/Lib/OpenNI2.lib) OpenNI2 found (include:
C:/libraries/OpenNI2/Include, lib:
C:/libraries/OpenNI2/Lib/OpenNI2.lib) Found Qhull:
optimized;C:/libraries/PCL
1.9.1/3rdParty/Qhull/lib/qhullstatic.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic_d.lib QHULL found (include: C:/libraries/PCL 1.9.1/3rdParty/Qhull/include, lib:
optimized;C:/libraries/PCL
1.9.1/3rdParty/Qhull/lib/qhullstatic.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic_d.lib) looking for PCL_COMMON Found PCL_COMMON: C:/libraries/PCL 1.9.1/lib/pcl_common_release.lib
looking for PCL_KDTREE Found PCL_KDTREE: C:/libraries/PCL
1.9.1/lib/pcl_kdtree_release.lib looking for PCL_OCTREE Found PCL_OCTREE: C:/libraries/PCL 1.9.1/lib/pcl_octree_release.lib
looking for PCL_SEARCH Found PCL_SEARCH: C:/libraries/PCL
1.9.1/lib/pcl_search_release.lib looking for PCL_SAMPLE_CONSENSUS Found PCL_SAMPLE_CONSENSUS: C:/libraries/PCL
1.9.1/lib/pcl_sample_consensus_release.lib looking for PCL_FILTERS Found PCL_FILTERS: C:/libraries/PCL 1.9.1/lib/pcl_filters_release.lib
looking for PCL_2D Found PCL_2D: C:/libraries/PCL
1.9.1/include/pcl-1.9 looking for PCL_GEOMETRY Found PCL_GEOMETRY: C:/libraries/PCL 1.9.1/include/pcl-1.9 looking for PCL_IO Found
PCL_IO: C:/libraries/PCL 1.9.1/lib/pcl_io_release.lib looking for
PCL_FEATURES Found PCL_FEATURES: C:/libraries/PCL
1.9.1/lib/pcl_features_release.lib looking for PCL_ML Found PCL_ML: C:/libraries/PCL 1.9.1/lib/pcl_ml_release.lib looking for
PCL_SEGMENTATION Found PCL_SEGMENTATION: C:/libraries/PCL
1.9.1/lib/pcl_segmentation_release.lib looking for PCL_VISUALIZATION Found PCL_VISUALIZATION: C:/libraries/PCL
1.9.1/lib/pcl_visualization_release.lib looking for PCL_SURFACE Found PCL_SURFACE: C:/libraries/PCL 1.9.1/lib/pcl_surface_release.lib
looking for PCL_REGISTRATION Found PCL_REGISTRATION: C:/libraries/PCL
1.9.1/lib/pcl_registration_release.lib looking for PCL_KEYPOINTS Found PCL_KEYPOINTS: C:/libraries/PCL
1.9.1/lib/pcl_keypoints_release.lib looking for PCL_TRACKING Found PCL_TRACKING: C:/libraries/PCL 1.9.1/lib/pcl_tracking_release.lib
looking for PCL_RECOGNITION Found PCL_RECOGNITION: C:/libraries/PCL
1.9.1/lib/pcl_recognition_release.lib looking for PCL_STEREO Found PCL_STEREO: C:/libraries/PCL 1.9.1/lib/pcl_stereo_release.lib
looking for PCL_OUTOFCORE Found PCL_OUTOFCORE: C:/libraries/PCL
1.9.1/lib/pcl_outofcore_release.lib looking for PCL_PEOPLE Found PCL_PEOPLE: C:/libraries/PCL 1.9.1/lib/pcl_people_release.lib Found
PCL:
pcl_common;pcl_kdtree;pcl_octree;pcl_search;pcl_sample_consensus;pcl_filters;pcl_io;pcl_features;pcl_ml;pcl_segmentation;pcl_visualization;pcl_surface;pcl_registration;pcl_keypoints;pcl_tracking;pcl_recognition;pcl_stereo;pcl_outofcore;pcl_people;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_system-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_system-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_filesystem-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_filesystem-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_thread-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_thread-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_date_time-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_date_time-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_iostreams-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_iostreams-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_serialization-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_serialization-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_chrono-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_chrono-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_atomic-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_atomic-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_regex-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL
1.9.1/3rdParty/Boost/lib/libboost_regex-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL
1.9.1/3rdParty/Qhull/lib/qhullstatic.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic_d.lib;C:/libraries/OpenNI2/Lib/OpenNI2.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s-gd.lib;vtksys;vtkCommonCore;vtkCommonMath;vtkCommonMisc;vtkCommonSystem;vtkCommonTransforms;vtkCommonDataModel;vtkCommonColor;vtkCommonExecutionModel;vtkCommonComputationalGeometry;vtkFiltersCore;vtkFiltersGeneral;vtkImagingCore;vtkImagingFourier;vtkalglib;vtkFiltersStatistics;vtkFiltersExtraction;vtkInfovisCore;vtkFiltersGeometry;vtkFiltersSources;vtkRenderingCore;vtkzlib;vtkfreetype;vtkRenderingFreeType;vtkRenderingContext2D;vtkChartsCore;vtkDICOMParser;vtklz4;vtkIOCore;vtkIOLegacy;vtkexpat;vtkIOXMLParser;vtkDomainsChemistry;vtkIOXML;vtkParallelCore;vtkFiltersAMR;vtkFiltersFlowPaths;vtkFiltersGeneric;vtkImagingSources;vtkFiltersHybrid;vtkFiltersHyperTree;vtkImagingGeneral;vtkFiltersImaging;vtkFiltersModeling;vtkFiltersParallel;vtkFiltersParallelImaging;vtkFiltersPoints;vtkFiltersProgrammable;vtkFiltersSMP;vtkFiltersSelection;vtkFiltersTexture;vtkFiltersTopology;verdict;vtkFiltersVerdict;vtkmetaio;vtkjpeg;vtkpng;vtktiff;vtkIOImage;vtkImagingHybrid;vtkInfovisLayout;vtkInteractionStyle;vtkImagingColor;vtkRenderingAnnotation;vtkRenderingVolume;vtkInteractionWidgets;vtkViewsCore;vtkproj4;vtkGeovisCore;vtkhdf5_hl;vtkhdf5;vtkIOAMR;vtkIOEnSight;vtkNetCDF;vtkexoIIc;vtkIOExodus;vtkRenderingOpenGL;vtkRenderingContextOpenGL;vtkgl2ps;vtkRenderingGL2PS;vtklibharu;vtkIOExport;vtkRenderingLabel;vtkIOExportOpenGL;vtkIOGeometry;vtkIOImport;vtklibxml2;vtkIOInfovis;vtkIOLSDyna;vtkIOMINC;vtkoggtheora;vtkIOMovie;vtknetcdfcpp;vtkIONetCDF;vtkIOPLY;vtkjsoncpp;vtkIOParallel;vtkIOParallelXML;vtksqlite;vtkIOSQL;vtkIOTecplotTable;vtkIOVideo;vtkImagingMath;vtkImagingMorphological;vtkImagingStatistics;vtkImagingStencil;vtkInteractionImage;vtkRenderingImage;vtkRenderingLIC;vtkRenderingLOD;vtkRenderingVolumeOpenGL;vtkViewsContext2D;vtkViewsInfovis
(Required is at least version "1.2") Configuring done Generating done
构建后，当我单击打开项目并 运行 它时，出现此错误。
有什么解决办法吗？
CMP0074 警告并不是您作为用户真正需要担心的问题。这是对 CMakeLists.txt 开发人员的警告，即 CMake 中的行为已更改。
https://cmake.org/cmake/help/latest/policy/CMP0074.html
In CMake 3.12 and above the find_package() command now
searches prefixes specified by the _ROOT CMake variable
and the ROOT environment variable. Package roots are
maintained as a stack so nested calls to all find* commands inside
find modules also search the roots as prefixes. This policy provides
compatibility with projects that have not been updated to avoid using
_ROOT variables for other purposes.
The OLD behavior for this policy is to ignore _ROOT
variables. The NEW behavior for this policy is to use
_ROOT variables.
基本上，警告是 CMakeLists.txt 的开发人员尚未设置启用新行为或保留旧行为的策略，但是定义了 PCL_ROOT。 CMake 不会自动使用它，因为未启用新行为。
ALL_BUILD错误信息是因为ALL_BUILD目标/项目不是可执行目标。它的目的是强制构建解决方案中的所有项目。要修复该部分，您需要右键单击 Solution Explorer 中的可执行项目/目标，然后单击 "Set this project as the startup project"
我想完成这个基础教程。
http://pointclouds.org/documentation/tutorials/writing_pcd.php#writing-pcd
很简单。当我准备 cmakelist 和 .cpp 文件时，我使用 cmake gui 运行 它们，但出现此错误。我安装了 pcl 1.9.1，所以我为 visual studio 2017 64x.
构建文件Selecting Windows SDK version 10.0.17134.0 to target Windows 10.0.17763. The C compiler identification is MSVC 19.15.26726.0 The CXX compiler identification is MSVC 19.15.26726.0 Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe -- 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: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.15.26726/bin/Hostx86/x64/cl.exe -- works Detecting CXX compiler ABI info Detecting CXX compiler ABI info - done Detecting CXX compile features Detecting CXX compile features - done CMake Warning (dev) at CMakeLists.txt:5 (find_package): Policy CMP0074 is not set: find_package uses _ROOT variables. Run "cmake --help-policy CMP0074" for policy details. Use the cmake_policy command to set the policy and suppress this warning.
Environment variable PCL_ROOT is set to:
C:\libraries\PCL 1.9.1For compatibility, CMake is ignoring the variable. This warning is for project developers. Use -Wno-dev to suppress it.
Found Eigen: C:/libraries/PCL 1.9.1/3rdParty/Eigen/eigen3 Eigen found (include: C:/libraries/PCL 1.9.1/3rdParty/Eigen/eigen3, version: 3.3.5) Looking for pthread.h Looking for pthread.h - not found Found Threads: TRUE Found Boost: C:/libraries/PCL 1.9.1/3rdParty/Boost/include/boost-1_68 (found suitable version "1.68.0", minimum required is "1.40.0") found components: system filesystem thread date_time iostreams serialization chrono atomic regex Found FLANN: C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib FLANN found (include: C:/libraries/PCL 1.9.1/3rdParty/FLANN/include, lib: optimized;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s-gd.lib) FLANN found (include: C:/libraries/PCL 1.9.1/3rdParty/FLANN/include, lib: optimized;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s-gd.lib) Found OpenNI2: C:/libraries/OpenNI2/Lib/OpenNI2.lib OpenNI2 found (include: C:/libraries/OpenNI2/Include, lib: C:/libraries/OpenNI2/Lib/OpenNI2.lib) OpenNI2 found (include: C:/libraries/OpenNI2/Include, lib: C:/libraries/OpenNI2/Lib/OpenNI2.lib) Found Qhull: optimized;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic_d.lib QHULL found (include: C:/libraries/PCL 1.9.1/3rdParty/Qhull/include, lib: optimized;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic_d.lib) looking for PCL_COMMON Found PCL_COMMON: C:/libraries/PCL 1.9.1/lib/pcl_common_release.lib
looking for PCL_KDTREE Found PCL_KDTREE: C:/libraries/PCL 1.9.1/lib/pcl_kdtree_release.lib looking for PCL_OCTREE Found PCL_OCTREE: C:/libraries/PCL 1.9.1/lib/pcl_octree_release.lib
looking for PCL_SEARCH Found PCL_SEARCH: C:/libraries/PCL 1.9.1/lib/pcl_search_release.lib looking for PCL_SAMPLE_CONSENSUS Found PCL_SAMPLE_CONSENSUS: C:/libraries/PCL 1.9.1/lib/pcl_sample_consensus_release.lib looking for PCL_FILTERS Found PCL_FILTERS: C:/libraries/PCL 1.9.1/lib/pcl_filters_release.lib looking for PCL_2D Found PCL_2D: C:/libraries/PCL 1.9.1/include/pcl-1.9 looking for PCL_GEOMETRY Found PCL_GEOMETRY: C:/libraries/PCL 1.9.1/include/pcl-1.9 looking for PCL_IO Found PCL_IO: C:/libraries/PCL 1.9.1/lib/pcl_io_release.lib looking for PCL_FEATURES Found PCL_FEATURES: C:/libraries/PCL 1.9.1/lib/pcl_features_release.lib looking for PCL_ML Found PCL_ML: C:/libraries/PCL 1.9.1/lib/pcl_ml_release.lib looking for PCL_SEGMENTATION Found PCL_SEGMENTATION: C:/libraries/PCL 1.9.1/lib/pcl_segmentation_release.lib looking for PCL_VISUALIZATION Found PCL_VISUALIZATION: C:/libraries/PCL 1.9.1/lib/pcl_visualization_release.lib looking for PCL_SURFACE Found PCL_SURFACE: C:/libraries/PCL 1.9.1/lib/pcl_surface_release.lib looking for PCL_REGISTRATION Found PCL_REGISTRATION: C:/libraries/PCL 1.9.1/lib/pcl_registration_release.lib looking for PCL_KEYPOINTS Found PCL_KEYPOINTS: C:/libraries/PCL 1.9.1/lib/pcl_keypoints_release.lib looking for PCL_TRACKING Found PCL_TRACKING: C:/libraries/PCL 1.9.1/lib/pcl_tracking_release.lib
looking for PCL_RECOGNITION Found PCL_RECOGNITION: C:/libraries/PCL 1.9.1/lib/pcl_recognition_release.lib looking for PCL_STEREO Found PCL_STEREO: C:/libraries/PCL 1.9.1/lib/pcl_stereo_release.lib
looking for PCL_OUTOFCORE Found PCL_OUTOFCORE: C:/libraries/PCL 1.9.1/lib/pcl_outofcore_release.lib looking for PCL_PEOPLE Found PCL_PEOPLE: C:/libraries/PCL 1.9.1/lib/pcl_people_release.lib Found PCL: pcl_common;pcl_kdtree;pcl_octree;pcl_search;pcl_sample_consensus;pcl_filters;pcl_io;pcl_features;pcl_ml;pcl_segmentation;pcl_visualization;pcl_surface;pcl_registration;pcl_keypoints;pcl_tracking;pcl_recognition;pcl_stereo;pcl_outofcore;pcl_people;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_system-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_system-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_filesystem-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_filesystem-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_thread-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_thread-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_date_time-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_date_time-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_iostreams-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_iostreams-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_serialization-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_serialization-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_chrono-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_chrono-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_atomic-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_atomic-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_regex-vc141-mt-x64-1_68.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Boost/lib/libboost_regex-vc141-mt-gd-x64-1_68.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/Qhull/lib/qhullstatic_d.lib;C:/libraries/OpenNI2/Lib/OpenNI2.lib;optimized;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s.lib;debug;C:/libraries/PCL 1.9.1/3rdParty/FLANN/lib/flann_cpp_s-gd.lib;vtksys;vtkCommonCore;vtkCommonMath;vtkCommonMisc;vtkCommonSystem;vtkCommonTransforms;vtkCommonDataModel;vtkCommonColor;vtkCommonExecutionModel;vtkCommonComputationalGeometry;vtkFiltersCore;vtkFiltersGeneral;vtkImagingCore;vtkImagingFourier;vtkalglib;vtkFiltersStatistics;vtkFiltersExtraction;vtkInfovisCore;vtkFiltersGeometry;vtkFiltersSources;vtkRenderingCore;vtkzlib;vtkfreetype;vtkRenderingFreeType;vtkRenderingContext2D;vtkChartsCore;vtkDICOMParser;vtklz4;vtkIOCore;vtkIOLegacy;vtkexpat;vtkIOXMLParser;vtkDomainsChemistry;vtkIOXML;vtkParallelCore;vtkFiltersAMR;vtkFiltersFlowPaths;vtkFiltersGeneric;vtkImagingSources;vtkFiltersHybrid;vtkFiltersHyperTree;vtkImagingGeneral;vtkFiltersImaging;vtkFiltersModeling;vtkFiltersParallel;vtkFiltersParallelImaging;vtkFiltersPoints;vtkFiltersProgrammable;vtkFiltersSMP;vtkFiltersSelection;vtkFiltersTexture;vtkFiltersTopology;verdict;vtkFiltersVerdict;vtkmetaio;vtkjpeg;vtkpng;vtktiff;vtkIOImage;vtkImagingHybrid;vtkInfovisLayout;vtkInteractionStyle;vtkImagingColor;vtkRenderingAnnotation;vtkRenderingVolume;vtkInteractionWidgets;vtkViewsCore;vtkproj4;vtkGeovisCore;vtkhdf5_hl;vtkhdf5;vtkIOAMR;vtkIOEnSight;vtkNetCDF;vtkexoIIc;vtkIOExodus;vtkRenderingOpenGL;vtkRenderingContextOpenGL;vtkgl2ps;vtkRenderingGL2PS;vtklibharu;vtkIOExport;vtkRenderingLabel;vtkIOExportOpenGL;vtkIOGeometry;vtkIOImport;vtklibxml2;vtkIOInfovis;vtkIOLSDyna;vtkIOMINC;vtkoggtheora;vtkIOMovie;vtknetcdfcpp;vtkIONetCDF;vtkIOPLY;vtkjsoncpp;vtkIOParallel;vtkIOParallelXML;vtksqlite;vtkIOSQL;vtkIOTecplotTable;vtkIOVideo;vtkImagingMath;vtkImagingMorphological;vtkImagingStatistics;vtkImagingStencil;vtkInteractionImage;vtkRenderingImage;vtkRenderingLIC;vtkRenderingLOD;vtkRenderingVolumeOpenGL;vtkViewsContext2D;vtkViewsInfovis (Required is at least version "1.2") Configuring done Generating done
构建后，当我单击打开项目并 运行 它时，出现此错误。
有什么解决办法吗？
CMP0074 警告并不是您作为用户真正需要担心的问题。这是对 CMakeLists.txt 开发人员的警告，即 CMake 中的行为已更改。
https://cmake.org/cmake/help/latest/policy/CMP0074.html
In CMake 3.12 and above the find_package() command now searches prefixes specified by the _ROOT CMake variable and the ROOT environment variable. Package roots are maintained as a stack so nested calls to all find* commands inside find modules also search the roots as prefixes. This policy provides compatibility with projects that have not been updated to avoid using _ROOT variables for other purposes.
The OLD behavior for this policy is to ignore _ROOT variables. The NEW behavior for this policy is to use _ROOT variables.
基本上，警告是 CMakeLists.txt 的开发人员尚未设置启用新行为或保留旧行为的策略，但是定义了 PCL_ROOT。 CMake 不会自动使用它，因为未启用新行为。
ALL_BUILD错误信息是因为ALL_BUILD目标/项目不是可执行目标。它的目的是强制构建解决方案中的所有项目。要修复该部分，您需要右键单击 Solution Explorer 中的可执行项目/目标，然后单击 "Set this project as the startup project"