多版本OpenCV+OpenCV_contrib安装及使用
多版本的安装
对于多个版本都安装到了显式指定的路径上，可以参考文章2进行设置；若是有一种版本常用的，则将其安装到默认目录/usr/local下，而对于另一种新安装的，则显式指定安装目录CMAKE -D CMAKE_INSTALL_PREFIX=/home/xxx/opencv-x.x.x/build/installed，见参考文章1
多版本切换使用
安装到/usr/local的版本无需额外增加环境变量，都可以找到。
安装到指定目录下的OpenCV，则需要添加环境变量来使得系统知道去哪里找。具体做法：
- 打开~/.bashrc
- 添加如下内容
export PKG_CONFIG_PATH=/home/xxx/opencv-x.x.x/build/installed/lib/pkgconfig
export LD_LIBRARY_PATH=/home/xxx/opencv-x.x.x/build/installed/lib
source ~/.bashrc更新使之生效- 在项目中的CMakeLists.txt中，要找到对应版本的OpenCVConfig.cmake文件，示例如下：
set(OpenCV_DIR "/home/xxx/opencv-x.x.x/build" #这里不指定则从默认的目录里如/usr/local去找
find_package(OpenCV REQUIRED)
message(STATUS "OpenCV library status:") #以下是输出对应的版本信息，以便确认为所需版本
message(STATUS " version: ${OpenCV_VERSION}")
message(STATUS " libraries: ${OpenCV_LIBS}")
message(STATUS " include path: ${OpenCV_INCLUDE_DIRS}")
附录之OpenCV_contrib模块安装
由于要使用nonfree模块，需要安装contrib套件，安装过程遇到许多麻烦，遂记录之。
nonfree modules安装不完整的问题
编译安装时最终都通过了，却发现如sift, surf都还是不能用。查看cmake输出发现其中有unavailable的模块，问题应该是出在这里：
-- OpenCV modules:
-- To be built: alphamat aruco bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hdf hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor ml objdetect optflow phase_unwrapping photo plot python2 quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab viz xfeatures2d ximgproc xobjdetect xphoto
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv java js julia matlab ovis python3 sfm xfeatures2d
-- Applications: tests perf_tests apps
-- Documentation: NO
-- Non-free algorithms: YES
--
继续向上查看，发现有如下的报错:
-- xfeatures2d/vgg: Download: vgg_generated_80.i
-- Try 1 failed
--
=======================================================================
Couldn't connect to server from the Internet.
Perhaps direct connections are not allowed in the current network.
To use proxy please check/specify these environment variables:
- http_proxy/https_proxy
- and/or HTTP_PROXY/HTTPS_PROXY
=======================================================================
CMake Warning at cmake/OpenCVDownload.cmake:202 (message):
xfeatures2d/vgg: Download failed: 7;"Couldn't connect to server"
For details please refer to the download log file:
/home/wrx/opencv-4.4.0/build/CMakeDownloadLog.txt
Call Stack (most recent call first):
opencv_contrib-4.4.0/modules/xfeatures2d/cmake/download_vgg.cmake:16 (ocv_download)
opencv_contrib-4.4.0/modules/xfeatures2d/CMakeLists.txt:12 (download_vgg_descriptors)
似乎是下载vgg_generated_80.i失败，像这样的还有face_landmark_model.dat、ippicv_2020_lnx_intel64_20191018_general.tgz、boostdesc_bgm.i、boostdesc_bgm_hd.i、boostdesc_bgm_bi.i、boostdesc_lbgm.i、vgg_generated_120.i、 vgg_generated_48.i、vgg_generated_64.i、boostdesc_binboost_064.i、boostdesc_binboost_128.i、boostdesc_binboost_256.i
在log中所言，参考/home/wrx/opencv-4.4.0/build/CMakeDownloadLog.txt去查看细节，打开该日志发现提供了下载地址
#use_cache "/home/wrx/opencv-4.4.0/.cache"
#do_unpack "ippicv_2020_lnx_intel64_20191018_general.tgz" "7421de0095c7a39162ae13a6098782f9" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/a56b6ac6f030c312b2dce17430eef13aed9af274/ippicv/ippicv_2020_lnx_intel64_20191018_general.tgz" "/home/wrx/opencv-4.4.0/build/3rdparty/ippicv"
#check_md5 "/home/wrx/opencv-4.4.0/.cache/ippicv/7421de0095c7a39162ae13a6098782f9-ippicv_2020_lnx_intel64_20191018_general.tgz"
#mismatch_md5 "/home/wrx/opencv-4.4.0/.cache/ippicv/7421de0095c7a39162ae13a6098782f9-ippicv_2020_lnx_intel64_20191018_general.tgz" "d41d8cd98f00b204e9800998ecf8427e"
#delete "/home/wrx/opencv-4.4.0/.cache/ippicv/7421de0095c7a39162ae13a6098782f9-ippicv_2020_lnx_intel64_20191018_general.tgz"
#cmake_download "/home/wrx/opencv-4.4.0/.cache/ippicv/7421de0095c7a39162ae13a6098782f9-ippicv_2020_lnx_intel64_20191018_general.tgz" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/a56b6ac6f030c312b2dce17430eef13aed9af274/ippicv/ippicv_2020_lnx_intel64_20191018_general.tgz"
#match_hash_in_cmake_cache "OCV_DOWNLOAD_ADE_HASH_3rdparty_ade_v0_1_1f_zip"
#do_copy "boostdesc_bgm.i" "0ea90e7a8f3f7876d450e4149c97c74f" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/34e4206aef44d50e6bbcd0ab06354b52e7466d26/boostdesc_bgm.i" "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d"
#missing "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d/boostdesc_bgm.i"
#check_md5 "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/0ea90e7a8f3f7876d450e4149c97c74f-boostdesc_bgm.i"
#mismatch_md5 "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/0ea90e7a8f3f7876d450e4149c97c74f-boostdesc_bgm.i" "d41d8cd98f00b204e9800998ecf8427e"
#delete "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/0ea90e7a8f3f7876d450e4149c97c74f-boostdesc_bgm.i"
#cmake_download "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/0ea90e7a8f3f7876d450e4149c97c74f-boostdesc_bgm.i" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/34e4206aef44d50e6bbcd0ab06354b52e7466d26/boostdesc_bgm.i"
#do_copy "boostdesc_bgm_bi.i" "232c966b13651bd0e46a1497b0852191" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/34e4206aef44d50e6bbcd0ab06354b52e7466d26/boostdesc_bgm_bi.i" "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d"
#missing "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d/boostdesc_bgm_bi.i"
#check_md5 "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/232c966b13651bd0e46a1497b0852191-boostdesc_bgm_bi.i"
#mismatch_md5 "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/232c966b13651bd0e46a1497b0852191-boostdesc_bgm_bi.i" "d41d8cd98f00b204e9800998ecf8427e"
#delete "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/232c966b13651bd0e46a1497b0852191-boostdesc_bgm_bi.i"
#cmake_download "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/232c966b13651bd0e46a1497b0852191-boostdesc_bgm_bi.i" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/34e4206aef44d50e6bbcd0ab06354b52e7466d26/boostdesc_bgm_bi.i"
#do_copy "boostdesc_bgm_hd.i" "324426a24fa56ad9c5b8e3e0b3e5303e" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/34e4206aef44d50e6bbcd0ab06354b52e7466d26/boostdesc_bgm_hd.i" "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d"
#missing "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d/boostdesc_bgm_hd.i"
#check_md5 "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/324426a24fa56ad9c5b8e3e0b3e5303e-boostdesc_bgm_hd.i"
#mismatch_md5 "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/324426a24fa56ad9c5b8e3e0b3e5303e-boostdesc_bgm_hd.i" "d41d8cd98f00b204e9800998ecf8427e"
#delete "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/324426a24fa56ad9c5b8e3e0b3e5303e-boostdesc_bgm_hd.i"
#cmake_download "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/324426a24fa56ad9c5b8e3e0b3e5303e-boostdesc_bgm_hd.i" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/34e4206aef44d50e6bbcd0ab06354b52e7466d26/boostdesc_bgm_hd.i"
#do_copy "boostdesc_binboost_064.i" "202e1b3e9fec871b04da31f7f016679f" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/34e4206aef44d50e6bbcd0ab06354b52e7466d26/boostdesc_binboost_064.i" "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d"
#missing "/home/wrx/opencv-4.4.0/build/downloads/xfeatures2d/boostdesc_binboost_064.i"
#check_md5 "/home/wrx/opencv-4.4.0/.cache/xfeatures2d/boostdesc/202e1b3e9fec871b04da31f7f016679f-boostdesc_binboost_064.i"
网络原因连接不上某些下载项，自己想办法事先下好吧～下载完毕后，这里尝试了几种方式来使得文件能替代。
1.参考1
对ippicv默认安装源修改，打开源文件：/home/xxx/opencv-x.x.x/3rdparty/ippicv/ippicv.cmake，将其中
https://raw.githubusercontent.com/opencv/opencv_3rdparty/${IPPICV_COMMIT}ippicv/替换为file:~/path/to/ippicv/
类似的，对face_landmark_model的opencv默认安装源进行修改：
在源文件中打开：/home/xxx/opencv-x.x.x/opencv_contrib/modules/face/CMakeLinks.txt，将其中的
https://raw.githubusercontent.com/opencv/opencv_3rdparty/${__commit_hash}/替换为file:~/Downloads/
这种方法对这两个文件的识别有效。
但对vgg的源/home/xxx/opencv-x.x.x/opencv_contrib/modules/xfeatures2d/cmake/download_vgg.cmake进行同样的修改无效！
且文中及这篇文章中说的将vgg等文件放到/home/xxx/opencv-x.x.x/opencv_contrib/modules/xfeatures2d/src/目录下的方法都无效！
2. 参考2
将各文件按[hash码-文件名]格式保存到对应的.cache文件夹内覆盖掉原先0kb的文件。
其放置于/home/xxx/opencv-x.x.x/.cache/xfeatures2d/vgg/文件夹内，最终成功搞定了xfeatures模块，编译安装日志如下：
wrx@wrx-m15-r3:~/opencv-4.4.0/buildnew$ cmake -DCMAKE_INSTALL_PREFIX=/home/wrx/opencv-4.4.0/buildnew/installed -DOPENCV_EXTRA_MODULES_PATH=/home/wrx/opencv-4.4.0/opencv_contrib-4.4.0/modules /home/wrx/opencv-4.4.0/ ..
-- Detected processor: x86_64
-- Looking for ccache - not found
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found suitable version "1.2.11", minimum required is "1.2.3")
-- The imported target "openjp2_static" references the file
"/usr/lib/x86_64-linux-gnu/libopenjp2.a"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "openjpip" references the file
"/usr/lib/x86_64-linux-gnu/libopenjpip.so.2.3.0"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "openjpip_server" references the file
"/usr/lib/x86_64-linux-gnu/libopenjpip_server.a"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_decompress" references the file
"/usr/bin/opj_decompress"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_compress" references the file
"/usr/bin/opj_compress"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_dump" references the file
"/usr/bin/opj_dump"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_jpip_addxml" references the file
"/usr/bin/opj_jpip_addxml"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_server" references the file
"/usr/bin/opj_server"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_dec_server" references the file
"/usr/bin/opj_dec_server"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_jpip_transcode" references the file
"/usr/bin/opj_jpip_transcode"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_jpip_test" references the file
"/usr/bin/opj_jpip_test"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- Found OpenJPEG: openjp2 (found version "2.3.0")
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11")
-- Found OpenEXR: /usr/lib/x86_64-linux-gnu/libIlmImf.so
-- Checking for module 'gtk+-3.0'
-- No package 'gtk+-3.0' found
-- Checking for module 'gtk+-2.0'
-- No package 'gtk+-2.0' found
-- found Intel IPP (ICV version): 2020.0.0 [2020.0.0 Gold]
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/icv
-- found Intel IPP Integration Wrappers sources: 2020.0.0
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/iw
-- Could not find OpenBLAS include. Turning OpenBLAS_FOUND off
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing: Atlas_CLAPACK_INCLUDE_DIR Atlas_CBLAS_LIBRARY Atlas_BLAS_LIBRARY)
-- A library with BLAS API found.
-- A library with LAPACK API found.
-- Could NOT find JNI (missing: JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
-- The imported target "vtkRenderingPythonTkWidgets" references the file
"/usr/lib/x86_64-linux-gnu/libvtkRenderingPythonTkWidgets.so"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/cmake/vtk-6.3/VTKTargets.cmake"
but not all the files it references.
-- The imported target "vtk" references the file
"/usr/bin/vtk"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/cmake/vtk-6.3/VTKTargets.cmake"
but not all the files it references.
-- Found VTK 6.3.0 (/usr/lib/cmake/vtk-6.3/UseVTK.cmake)
-- OpenCV Python: during development append to PYTHONPATH: /home/wrx/opencv-4.4.0/buildnew/python_loader
-- Caffe: NO
-- Protobuf: NO
-- Glog: NO
-- freetype2: YES (ver 21.0.15)
-- harfbuzz: YES (ver 1.7.2)
-- HDF5: Using hdf5 compiler wrapper to determine C configuration
-- Julia not found. Not compiling Julia Bindings.
-- Module opencv_ovis disabled because OGRE3D was not found
-- No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available.
-- Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake.
-- Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components.
-- Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h
-- Failed to find glog - Could not find glog include directory, set GLOG_INCLUDE_DIR to directory containing glog/logging.h
-- Module opencv_sfm disabled because the following dependencies are not found: Glog/Gflags
-- Checking for module 'tesseract'
-- No package 'tesseract' found
-- Tesseract: NO
-- Allocator metrics storage type: 'long long'
-- HDF5: Using hdf5 compiler wrapper to determine C configuration
-- Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': /home/wrx/opencv-4.4.0/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
-- opencv_dnn: filter out cuda4dnn source code
-- xfeatures2d/vgg: Download: vgg_generated_64.i
--
-- General configuration for OpenCV 4.4.0 =====================================
-- Version control: unknown
--
-- Extra modules:
-- Location (extra): /home/wrx/opencv-4.4.0/opencv_contrib-4.4.0/modules
-- Version control (extra): unknown
--
-- Platform:
-- Timestamp: 2020-10-14T12:08:36Z
-- Host: Linux 5.4.0-48-generic x86_64
-- CMake: 3.10.2
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: Release
--
-- CPU/HW features:
-- Baseline: SSE SSE2 SSE3
-- requested: SSE3
-- Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
-- requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
-- SSE4_1 (17 files): + SSSE3 SSE4_1
-- SSE4_2 (2 files): + SSSE3 SSE4_1 POPCNT SSE4_2
-- FP16 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
-- AVX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
-- AVX2 (31 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
-- AVX512_SKX (7 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
--
-- C/C++:
-- Built as dynamic libs?: YES
-- C++ standard: 11
-- C++ Compiler: /usr/bin/c++ (ver 7.5.0)
-- C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /usr/bin/cc
-- C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
-- C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
-- Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed
-- Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed
-- ccache: NO
-- Precompiled headers: NO
-- Extra dependencies: dl m pthread rt
-- 3rdparty dependencies:
--
-- OpenCV modules:
-- To be built: alphamat aruco bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hdf hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor ml objdetect optflow phase_unwrapping photo plot python2 quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab viz xfeatures2d ximgproc xobjdetect xphoto
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv java js julia matlab ovis python3 sfm
-- Applications: tests perf_tests apps
-- Documentation: NO
-- Non-free algorithms: NO
--
-- GUI:
-- GTK+: NO
-- VTK support: YES (ver 6.3.0)
--
-- Media I/O:
-- ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11)
-- JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80)
-- WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020e)
-- PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.54)
-- TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 / 4.0.9)
-- JPEG 2000: OpenJPEG (ver 2.3.0)
-- OpenEXR: /usr/lib/x86_64-linux-gnu/libImath.so /usr/lib/x86_64-linux-gnu/libIlmImf.so /usr/lib/x86_64-linux-gnu/libIex.so /usr/lib/x86_64-linux-gnu/libHalf.so /usr/lib/x86_64-linux-gnu/libIlmThread.so (ver 2_2)
-- HDR: YES
-- SUNRASTER: YES
-- PXM: YES
-- PFM: YES
--
-- Video I/O:
-- DC1394: YES (2.2.5)
-- FFMPEG: YES
-- avcodec: YES (57.107.100)
-- avformat: YES (57.83.100)
-- avutil: YES (55.78.100)
-- swscale: YES (4.8.100)
-- avresample: YES (3.7.0)
-- GStreamer: YES (1.14.5)
-- v4l/v4l2: YES (linux/videodev2.h)
--
-- Parallel framework: pthreads
--
-- Trace: YES (with Intel ITT)
--
-- Other third-party libraries:
-- Intel IPP: 2020.0.0 Gold [2020.0.0]
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/icv
-- Intel IPP IW: sources (2020.0.0)
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/iw
-- Lapack: NO
-- Eigen: YES (ver 3.3.4)
-- Custom HAL: NO
-- Protobuf: build (3.5.1)
--
-- OpenCL: YES (no extra features)
-- Include path: /home/wrx/opencv-4.4.0/3rdparty/include/opencl/1.2
-- Link libraries: Dynamic load
--
-- Python 2:
-- Interpreter: /usr/bin/python2.7 (ver 2.7.17)
-- Libraries: /usr/lib/x86_64-linux-gnu/libpython2.7.so (ver 2.7.17)
-- numpy: /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.13.3)
-- install path: lib/python2.7/dist-packages/cv2/python-2.7
--
-- Python (for build): /usr/bin/python2.7
--
-- Java:
-- ant: NO
-- JNI: NO
-- Java wrappers: NO
-- Java tests: NO
--
-- Install to: /home/wrx/opencv-4.4.0/buildnew/installed
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to: /home/wrx/opencv-4.4.0/buildnew
可以看到，xfeatures2d不再是unavailable了，由是可知，log里是没有废话的噢！（我的log中仍有许多问题，留在这里，有待后面再改进）
附录之GUI
多版本的OpenCV可能会存在没有GUI从而不能使用namedwindow, imshow等函数的情况
提示：highgui/src/window.cpp:651: not implemented
重新加上-DFORCE_VTK=ON -DWITH_TBB=ON编译安装后（参考这里），看cmake输出log
cmake -DCMAKE_INSTALL_PREFIX=/home/wrx/opencv-4.4.0/buildnew/installed -DFORCE_VTK=ON -DWITH_TBB=ON -DOPENCV_EXTRA_MODULES_PATH=/home/wrx/opencv-4.4.0/opencv_contrib-4.4.0/modules /home/wrx/opencv-4.4.0/ ..
-- The CXX compiler identification is GNU 7.5.0
-- The C compiler identification is GNU 7.5.0
-- 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
-- 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
-- Detected processor: x86_64
-- Found PythonInterp: /usr/bin/python2.7 (found suitable version "2.7.17", minimum required is "2.7")
-- Found PythonLibs: /usr/lib/x86_64-linux-gnu/libpython2.7.so (found suitable exact version "2.7.17")
-- Found PythonInterp: /usr/bin/python3 (found suitable version "3.6.9", minimum required is "3.2")
-- Found PythonLibs: /usr/lib/x86_64-linux-gnu/libpython3.6m.so (found suitable exact version "3.6.9")
Traceback (most recent call last):
File "", line 1, in
ModuleNotFoundError: No module named 'numpy'
-- Looking for ccache - not found
-- Performing Test HAVE_CXX_FSIGNED_CHAR
-- Performing Test HAVE_CXX_FSIGNED_CHAR - Success
-- Performing Test HAVE_C_FSIGNED_CHAR
-- Performing Test HAVE_C_FSIGNED_CHAR - Success
-- Performing Test HAVE_CXX_W
-- Performing Test HAVE_CXX_W - Success
-- Performing Test HAVE_C_W
-- Performing Test HAVE_C_W - Success
-- Performing Test HAVE_CXX_WALL
-- Performing Test HAVE_CXX_WALL - Success
-- Performing Test HAVE_C_WALL
-- Performing Test HAVE_C_WALL - Success
-- Performing Test HAVE_CXX_WERROR_RETURN_TYPE
-- Performing Test HAVE_CXX_WERROR_RETURN_TYPE - Success
-- Performing Test HAVE_C_WERROR_RETURN_TYPE
-- Performing Test HAVE_C_WERROR_RETURN_TYPE - Success
-- Performing Test HAVE_CXX_WERROR_NON_VIRTUAL_DTOR
-- Performing Test HAVE_CXX_WERROR_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_C_WERROR_NON_VIRTUAL_DTOR
-- Performing Test HAVE_C_WERROR_NON_VIRTUAL_DTOR - Failed
-- Performing Test HAVE_CXX_WERROR_ADDRESS
-- Performing Test HAVE_CXX_WERROR_ADDRESS - Success
-- Performing Test HAVE_C_WERROR_ADDRESS
-- Performing Test HAVE_C_WERROR_ADDRESS - Success
-- Performing Test HAVE_CXX_WERROR_SEQUENCE_POINT
-- Performing Test HAVE_CXX_WERROR_SEQUENCE_POINT - Success
-- Performing Test HAVE_C_WERROR_SEQUENCE_POINT
-- Performing Test HAVE_C_WERROR_SEQUENCE_POINT - Success
-- Performing Test HAVE_CXX_WFORMAT
-- Performing Test HAVE_CXX_WFORMAT - Success
-- Performing Test HAVE_C_WFORMAT
-- Performing Test HAVE_C_WFORMAT - Success
-- Performing Test HAVE_CXX_WERROR_FORMAT_SECURITY
-- Performing Test HAVE_CXX_WERROR_FORMAT_SECURITY - Success
-- Performing Test HAVE_C_WERROR_FORMAT_SECURITY
-- Performing Test HAVE_C_WERROR_FORMAT_SECURITY - Success
-- Performing Test HAVE_CXX_WMISSING_DECLARATIONS
-- Performing Test HAVE_CXX_WMISSING_DECLARATIONS - Success
-- Performing Test HAVE_C_WMISSING_DECLARATIONS
-- Performing Test HAVE_C_WMISSING_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WMISSING_PROTOTYPES
-- Performing Test HAVE_CXX_WMISSING_PROTOTYPES - Failed
-- Performing Test HAVE_C_WMISSING_PROTOTYPES
-- Performing Test HAVE_C_WMISSING_PROTOTYPES - Success
-- Performing Test HAVE_CXX_WSTRICT_PROTOTYPES
-- Performing Test HAVE_CXX_WSTRICT_PROTOTYPES - Failed
-- Performing Test HAVE_C_WSTRICT_PROTOTYPES
-- Performing Test HAVE_C_WSTRICT_PROTOTYPES - Success
-- Performing Test HAVE_CXX_WUNDEF
-- Performing Test HAVE_CXX_WUNDEF - Success
-- Performing Test HAVE_C_WUNDEF
-- Performing Test HAVE_C_WUNDEF - Success
-- Performing Test HAVE_CXX_WINIT_SELF
-- Performing Test HAVE_CXX_WINIT_SELF - Success
-- Performing Test HAVE_C_WINIT_SELF
-- Performing Test HAVE_C_WINIT_SELF - Success
-- Performing Test HAVE_CXX_WPOINTER_ARITH
-- Performing Test HAVE_CXX_WPOINTER_ARITH - Success
-- Performing Test HAVE_C_WPOINTER_ARITH
-- Performing Test HAVE_C_WPOINTER_ARITH - Success
-- Performing Test HAVE_CXX_WSHADOW
-- Performing Test HAVE_CXX_WSHADOW - Success
-- Performing Test HAVE_C_WSHADOW
-- Performing Test HAVE_C_WSHADOW - Success
-- Performing Test HAVE_CXX_WSIGN_PROMO
-- Performing Test HAVE_CXX_WSIGN_PROMO - Success
-- Performing Test HAVE_C_WSIGN_PROMO
-- Performing Test HAVE_C_WSIGN_PROMO - Failed
-- Performing Test HAVE_CXX_WUNINITIALIZED
-- Performing Test HAVE_CXX_WUNINITIALIZED - Success
-- Performing Test HAVE_C_WUNINITIALIZED
-- Performing Test HAVE_C_WUNINITIALIZED - Success
-- Performing Test HAVE_CXX_WSUGGEST_OVERRIDE
-- Performing Test HAVE_CXX_WSUGGEST_OVERRIDE - Success
-- Performing Test HAVE_C_WSUGGEST_OVERRIDE
-- Performing Test HAVE_C_WSUGGEST_OVERRIDE - Failed
-- Performing Test HAVE_CXX_WNO_DELETE_NON_VIRTUAL_DTOR
-- Performing Test HAVE_CXX_WNO_DELETE_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_C_WNO_DELETE_NON_VIRTUAL_DTOR
-- Performing Test HAVE_C_WNO_DELETE_NON_VIRTUAL_DTOR - Failed
-- Performing Test HAVE_CXX_WNO_UNNAMED_TYPE_TEMPLATE_ARGS
-- Performing Test HAVE_CXX_WNO_UNNAMED_TYPE_TEMPLATE_ARGS - Failed
-- Performing Test HAVE_C_WNO_UNNAMED_TYPE_TEMPLATE_ARGS
-- Performing Test HAVE_C_WNO_UNNAMED_TYPE_TEMPLATE_ARGS - Failed
-- Performing Test HAVE_CXX_WNO_COMMENT
-- Performing Test HAVE_CXX_WNO_COMMENT - Success
-- Performing Test HAVE_C_WNO_COMMENT
-- Performing Test HAVE_C_WNO_COMMENT - Success
-- Performing Test HAVE_CXX_WIMPLICIT_FALLTHROUGH_3
-- Performing Test HAVE_CXX_WIMPLICIT_FALLTHROUGH_3 - Success
-- Performing Test HAVE_C_WIMPLICIT_FALLTHROUGH_3
-- Performing Test HAVE_C_WIMPLICIT_FALLTHROUGH_3 - Success
-- Performing Test HAVE_CXX_WNO_STRICT_OVERFLOW
-- Performing Test HAVE_CXX_WNO_STRICT_OVERFLOW - Success
-- Performing Test HAVE_C_WNO_STRICT_OVERFLOW
-- Performing Test HAVE_C_WNO_STRICT_OVERFLOW - Success
-- Performing Test HAVE_CXX_FDIAGNOSTICS_SHOW_OPTION
-- Performing Test HAVE_CXX_FDIAGNOSTICS_SHOW_OPTION - Success
-- Performing Test HAVE_C_FDIAGNOSTICS_SHOW_OPTION
-- Performing Test HAVE_C_FDIAGNOSTICS_SHOW_OPTION - Success
-- Performing Test HAVE_CXX_WNO_LONG_LONG
-- Performing Test HAVE_CXX_WNO_LONG_LONG - Success
-- Performing Test HAVE_C_WNO_LONG_LONG
-- Performing Test HAVE_C_WNO_LONG_LONG - Success
-- Performing Test HAVE_CXX_PTHREAD
-- Performing Test HAVE_CXX_PTHREAD - Success
-- Performing Test HAVE_C_PTHREAD
-- Performing Test HAVE_C_PTHREAD - Success
-- Performing Test HAVE_CXX_FOMIT_FRAME_POINTER
-- Performing Test HAVE_CXX_FOMIT_FRAME_POINTER - Success
-- Performing Test HAVE_C_FOMIT_FRAME_POINTER
-- Performing Test HAVE_C_FOMIT_FRAME_POINTER - Success
-- Performing Test HAVE_CXX_FFUNCTION_SECTIONS
-- Performing Test HAVE_CXX_FFUNCTION_SECTIONS - Success
-- Performing Test HAVE_C_FFUNCTION_SECTIONS
-- Performing Test HAVE_C_FFUNCTION_SECTIONS - Success
-- Performing Test HAVE_CXX_FDATA_SECTIONS
-- Performing Test HAVE_CXX_FDATA_SECTIONS - Success
-- Performing Test HAVE_C_FDATA_SECTIONS
-- Performing Test HAVE_C_FDATA_SECTIONS - Success
-- Performing Test HAVE_CXX_MSSE (check file: cmake/checks/cpu_sse.cpp)
-- Performing Test HAVE_CXX_MSSE - Success
-- Performing Test HAVE_CXX_MSSE2 (check file: cmake/checks/cpu_sse2.cpp)
-- Performing Test HAVE_CXX_MSSE2 - Success
-- Performing Test HAVE_CXX_MSSE3 (check file: cmake/checks/cpu_sse3.cpp)
-- Performing Test HAVE_CXX_MSSE3 - Success
-- Performing Test HAVE_CXX_MSSSE3 (check file: cmake/checks/cpu_ssse3.cpp)
-- Performing Test HAVE_CXX_MSSSE3 - Success
-- Performing Test HAVE_CXX_MSSE4_1 (check file: cmake/checks/cpu_sse41.cpp)
-- Performing Test HAVE_CXX_MSSE4_1 - Success
-- Performing Test HAVE_CXX_MPOPCNT (check file: cmake/checks/cpu_popcnt.cpp)
-- Performing Test HAVE_CXX_MPOPCNT - Success
-- Performing Test HAVE_CXX_MSSE4_2 (check file: cmake/checks/cpu_sse42.cpp)
-- Performing Test HAVE_CXX_MSSE4_2 - Success
-- Performing Test HAVE_CXX_MF16C (check file: cmake/checks/cpu_fp16.cpp)
-- Performing Test HAVE_CXX_MF16C - Success
-- Performing Test HAVE_CXX_MFMA
-- Performing Test HAVE_CXX_MFMA - Success
-- Performing Test HAVE_CXX_MAVX (check file: cmake/checks/cpu_avx.cpp)
-- Performing Test HAVE_CXX_MAVX - Success
-- Performing Test HAVE_CXX_MAVX2 (check file: cmake/checks/cpu_avx2.cpp)
-- Performing Test HAVE_CXX_MAVX2 - Success
-- Performing Test HAVE_CXX_MAVX512F (check file: cmake/checks/cpu_avx512.cpp)
-- Performing Test HAVE_CXX_MAVX512F - Success
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD (check file: cmake/checks/cpu_avx512common.cpp)
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD - Success
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD_MAVX512VL_MAVX512BW_MAVX512DQ (check file: cmake/checks/cpu_avx512skx.cpp)
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD_MAVX512VL_MAVX512BW_MAVX512DQ - Success
-- Performing Test HAVE_CPU_BASELINE_FLAGS
-- Performing Test HAVE_CPU_BASELINE_FLAGS - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_1
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_1 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_2
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_2 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_FP16
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_FP16 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX2
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX2 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX512_SKX
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX512_SKX - Success
-- Performing Test HAVE_CXX_FVISIBILITY_HIDDEN
-- Performing Test HAVE_CXX_FVISIBILITY_HIDDEN - Success
-- Performing Test HAVE_C_FVISIBILITY_HIDDEN
-- Performing Test HAVE_C_FVISIBILITY_HIDDEN - Success
-- Performing Test HAVE_CXX_FVISIBILITY_INLINES_HIDDEN
-- Performing Test HAVE_CXX_FVISIBILITY_INLINES_HIDDEN - Success
-- Performing Test HAVE_C_FVISIBILITY_INLINES_HIDDEN
-- Performing Test HAVE_C_FVISIBILITY_INLINES_HIDDEN - Failed
-- Performing Test HAVE_LINK_AS_NEEDED
-- Performing Test HAVE_LINK_AS_NEEDED - Success
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for posix_memalign
-- Looking for posix_memalign - found
-- Looking for malloc.h
-- Looking for malloc.h - found
-- Looking for memalign
-- Looking for memalign - found
-- Check if the system is big endian
-- Searching 16 bit integer
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found suitable version "1.2.11", minimum required is "1.2.3")
-- Found JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so
-- Found TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (found version "4.0.9")
-- Found WebP: /usr/lib/x86_64-linux-gnu/libwebp.so
-- The imported target "openjp2_static" references the file
"/usr/lib/x86_64-linux-gnu/libopenjp2.a"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "openjpip" references the file
"/usr/lib/x86_64-linux-gnu/libopenjpip.so.2.3.0"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "openjpip_server" references the file
"/usr/lib/x86_64-linux-gnu/libopenjpip_server.a"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_decompress" references the file
"/usr/bin/opj_decompress"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_compress" references the file
"/usr/bin/opj_compress"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_dump" references the file
"/usr/bin/opj_dump"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_jpip_addxml" references the file
"/usr/bin/opj_jpip_addxml"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_server" references the file
"/usr/bin/opj_server"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_dec_server" references the file
"/usr/bin/opj_dec_server"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_jpip_transcode" references the file
"/usr/bin/opj_jpip_transcode"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- The imported target "opj_jpip_test" references the file
"/usr/bin/opj_jpip_test"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/x86_64-linux-gnu/openjpeg-2.3/OpenJPEGTargets.cmake"
but not all the files it references.
-- Found OpenJPEG: openjp2 (found version "2.3.0")
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11")
-- Found PNG: /usr/lib/x86_64-linux-gnu/libpng.so (found version "1.6.34")
-- Looking for /usr/include/libpng/png.h
-- Looking for /usr/include/libpng/png.h - found
-- Found OpenEXR: /usr/lib/x86_64-linux-gnu/libIlmImf.so
-- Checking for module 'gtk+-3.0'
-- No package 'gtk+-3.0' found
-- Checking for module 'gtk+-2.0'
-- Found gtk+-2.0, version 2.24.32
-- Checking for module 'gthread-2.0'
-- Found gthread-2.0, version 2.56.4
-- Found TBB (env): /usr/lib/x86_64-linux-gnu/libtbb.so
-- IPPICV: Download: ippicv_2020_lnx_intel64_20191018_general.tgz
-- found Intel IPP (ICV version): 2020.0.0 [2020.0.0 Gold]
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/icv
-- found Intel IPP Integration Wrappers sources: 2020.0.0
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/iw
-- Could not find OpenBLAS include. Turning OpenBLAS_FOUND off
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing: Atlas_CLAPACK_INCLUDE_DIR Atlas_CBLAS_LIBRARY Atlas_BLAS_LIBRARY)
-- Looking for sgemm_
-- Looking for sgemm_ - found
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - found
-- Found Threads: TRUE
-- A library with BLAS API found.
-- Looking for cheev_
-- Looking for cheev_ - found
-- A library with LAPACK API found.
-- Performing Test HAVE_CXX_WNO_DEPRECATED
-- Performing Test HAVE_CXX_WNO_DEPRECATED - Success
-- Performing Test HAVE_CXX_WNO_MISSING_PROTOTYPES
-- Performing Test HAVE_CXX_WNO_MISSING_PROTOTYPES - Failed
-- Performing Test HAVE_CXX_WNO_MISSING_DECLARATIONS
-- Performing Test HAVE_CXX_WNO_MISSING_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WNO_SHADOW
-- Performing Test HAVE_CXX_WNO_SHADOW - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_PARAMETER
-- Performing Test HAVE_CXX_WNO_UNUSED_PARAMETER - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS
-- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS - Success
-- Performing Test HAVE_CXX_WNO_SIGN_COMPARE
-- Performing Test HAVE_CXX_WNO_SIGN_COMPARE - Success
-- Performing Test HAVE_CXX_WNO_SIGN_PROMO
-- Performing Test HAVE_CXX_WNO_SIGN_PROMO - Success
-- Performing Test HAVE_CXX_WNO_UNDEF
-- Performing Test HAVE_CXX_WNO_UNDEF - Success
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE - Failed
-- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS
-- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS - Success
-- Performing Test HAVE_CXX_WNO_EXTRA
-- Performing Test HAVE_CXX_WNO_EXTRA - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION
-- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE
-- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE - Success
-- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32
-- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32 - Failed
-- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF
-- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF - Success
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH - Failed
-- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE
-- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE - Success
-- Performing Test HAVE_CXX_WNO_INCONSISTENT_MISSING_OVERRIDE
-- Performing Test HAVE_CXX_WNO_INCONSISTENT_MISSING_OVERRIDE - Failed
-- Performing Test HAVE_CXX_WNO_IMPLICIT_FALLTHROUGH
-- Performing Test HAVE_CXX_WNO_IMPLICIT_FALLTHROUGH - Success
-- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS
-- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS - Success
-- Could NOT find JNI (missing: JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
-- The imported target "vtkRenderingPythonTkWidgets" references the file
"/usr/lib/x86_64-linux-gnu/libvtkRenderingPythonTkWidgets.so"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/cmake/vtk-6.3/VTKTargets.cmake"
but not all the files it references.
-- The imported target "vtk" references the file
"/usr/bin/vtk"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
"/usr/lib/cmake/vtk-6.3/VTKTargets.cmake"
but not all the files it references.
-- Found VTK 6.3.0 (/usr/lib/cmake/vtk-6.3/UseVTK.cmake)
-- Performing Test HAVE_C_WNO_UNUSED_VARIABLE
-- Performing Test HAVE_C_WNO_UNUSED_VARIABLE - Success
-- Performing Test HAVE_C_WNO_SHADOW
-- Performing Test HAVE_C_WNO_SHADOW - Success
-- Looking for dlerror in dl
-- Looking for dlerror in dl - found
-- Performing Test HAVE_C_WNO_IMPLICIT_FALLTHROUGH
-- Performing Test HAVE_C_WNO_IMPLICIT_FALLTHROUGH - Success
-- Performing Test HAVE_C_WNO_UNDEF
-- Performing Test HAVE_C_WNO_UNDEF - Success
-- Performing Test HAVE_C_WNO_SIGN_COMPARE
-- Performing Test HAVE_C_WNO_SIGN_COMPARE - Success
-- ADE: Download: v0.1.1f.zip
-- OpenCV Python: during development append to PYTHONPATH: /home/wrx/opencv-4.4.0/buildnew/python_loader
-- Checking for modules 'libavcodec;libavformat;libavutil;libswscale'
-- Found libavcodec, version 57.107.100
-- Found libavformat, version 57.83.100
-- Found libavutil, version 55.78.100
-- Found libswscale, version 4.8.100
-- Checking for module 'libavresample'
-- Found libavresample, version 3.7.0
-- Checking for module 'gstreamer-base-1.0'
-- Found gstreamer-base-1.0, version 1.14.5
-- Checking for module 'gstreamer-app-1.0'
-- Found gstreamer-app-1.0, version 1.14.5
-- Checking for module 'gstreamer-riff-1.0'
-- Found gstreamer-riff-1.0, version 1.14.5
-- Checking for module 'gstreamer-pbutils-1.0'
-- Found gstreamer-pbutils-1.0, version 1.14.5
-- Checking for module 'libdc1394-2'
-- Found libdc1394-2, version 2.2.5
-- Caffe: NO
-- Protobuf: NO
-- Glog: NO
-- Checking for module 'freetype2'
-- Found freetype2, version 21.0.15
-- Checking for module 'harfbuzz'
-- Found harfbuzz, version 1.7.2
-- freetype2: YES (ver 21.0.15)
-- harfbuzz: YES (ver 1.7.2)
-- HDF5: Using hdf5 compiler wrapper to determine C configuration
-- Found HDF5: /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5.so;/usr/lib/x86_64-linux-gnu/libpthread.so;/usr/lib/x86_64-linux-gnu/libsz.so;/usr/lib/x86_64-linux-gnu/libz.so;/usr/lib/x86_64-linux-gnu/libdl.so;/usr/lib/x86_64-linux-gnu/libm.so (found version "1.10.0.1")
-- Julia not found. Not compiling Julia Bindings.
-- Module opencv_ovis disabled because OGRE3D was not found
-- No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available.
-- Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake.
-- Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components.
-- Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h
-- Failed to find glog - Could not find glog include directory, set GLOG_INCLUDE_DIR to directory containing glog/logging.h
-- Module opencv_sfm disabled because the following dependencies are not found: Glog/Gflags
-- Checking for module 'tesseract'
-- No package 'tesseract' found
-- Tesseract: NO
-- Allocator metrics storage type: 'long long'
-- HDF5: Using hdf5 compiler wrapper to determine C configuration
-- Performing Test HAVE_CXX_WNO_DEPRECATED_DECLARATIONS
-- Performing Test HAVE_CXX_WNO_DEPRECATED_DECLARATIONS - Success
-- Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': /home/wrx/opencv-4.4.0/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
-- opencv_dnn: filter out cuda4dnn source code
-- Performing Test HAVE_CXX_WNO_OVERLOADED_VIRTUAL
-- Performing Test HAVE_CXX_WNO_OVERLOADED_VIRTUAL - Success
-- xfeatures2d/boostdesc: Download: boostdesc_bgm.i
-- xfeatures2d/boostdesc: Download: boostdesc_bgm_bi.i
-- xfeatures2d/boostdesc: Download: boostdesc_bgm_hd.i
-- xfeatures2d/boostdesc: Download: boostdesc_binboost_064.i
-- xfeatures2d/boostdesc: Download: boostdesc_binboost_128.i
-- xfeatures2d/boostdesc: Download: boostdesc_binboost_256.i
-- xfeatures2d/boostdesc: Download: boostdesc_lbgm.i
-- xfeatures2d/vgg: Download: vgg_generated_48.i
-- xfeatures2d/vgg: Download: vgg_generated_64.i
-- xfeatures2d/vgg: Download: vgg_generated_80.i
-- xfeatures2d/vgg: Download: vgg_generated_120.i
-- data: Download: face_landmark_model.dat
-- Performing Test HAVE_CXX_WNO_UNUSED_PRIVATE_FIELD
-- Performing Test HAVE_CXX_WNO_UNUSED_PRIVATE_FIELD - Failed
--
-- General configuration for OpenCV 4.4.0 =====================================
-- Version control: unknown
--
-- Extra modules:
-- Location (extra): /home/wrx/opencv-4.4.0/opencv_contrib-4.4.0/modules
-- Version control (extra): unknown
--
-- Platform:
-- Timestamp: 2020-10-14T13:57:40Z
-- Host: Linux 5.4.0-48-generic x86_64
-- CMake: 3.10.2
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: Release
--
-- CPU/HW features:
-- Baseline: SSE SSE2 SSE3
-- requested: SSE3
-- Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
-- requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
-- SSE4_1 (17 files): + SSSE3 SSE4_1
-- SSE4_2 (2 files): + SSSE3 SSE4_1 POPCNT SSE4_2
-- FP16 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
-- AVX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
-- AVX2 (31 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
-- AVX512_SKX (7 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
--
-- C/C++:
-- Built as dynamic libs?: YES
-- C++ standard: 11
-- C++ Compiler: /usr/bin/c++ (ver 7.5.0)
-- C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /usr/bin/cc
-- C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
-- C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
-- Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed
-- Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed
-- ccache: NO
-- Precompiled headers: NO
-- Extra dependencies: dl m pthread rt
-- 3rdparty dependencies:
--
-- OpenCV modules:
-- To be built: alphamat aruco bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hdf hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor ml objdetect optflow phase_unwrapping photo plot python2 quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab viz xfeatures2d ximgproc xobjdetect xphoto
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv java js julia matlab ovis python3 sfm
-- Applications: tests perf_tests apps
-- Documentation: NO
-- Non-free algorithms: NO
--
-- GUI:
-- GTK+: YES (ver 2.24.32)
-- GThread : YES (ver 2.56.4)
-- GtkGlExt: NO
-- VTK support: YES (ver 6.3.0)
--
-- Media I/O:
-- ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11)
-- JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80)
-- WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020e)
-- PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.34)
-- TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 / 4.0.9)
-- JPEG 2000: OpenJPEG (ver 2.3.0)
-- OpenEXR: /usr/lib/x86_64-linux-gnu/libImath.so /usr/lib/x86_64-linux-gnu/libIlmImf.so /usr/lib/x86_64-linux-gnu/libIex.so /usr/lib/x86_64-linux-gnu/libHalf.so /usr/lib/x86_64-linux-gnu/libIlmThread.so (ver 2_2)
-- HDR: YES
-- SUNRASTER: YES
-- PXM: YES
-- PFM: YES
--
-- Video I/O:
-- DC1394: YES (2.2.5)
-- FFMPEG: YES
-- avcodec: YES (57.107.100)
-- avformat: YES (57.83.100)
-- avutil: YES (55.78.100)
-- swscale: YES (4.8.100)
-- avresample: YES (3.7.0)
-- GStreamer: YES (1.14.5)
-- v4l/v4l2: YES (linux/videodev2.h)
--
-- Parallel framework: TBB (ver 2017.0 interface 9107)
--
-- Trace: YES (with Intel ITT)
--
-- Other third-party libraries:
-- Intel IPP: 2020.0.0 Gold [2020.0.0]
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/icv
-- Intel IPP IW: sources (2020.0.0)
-- at: /home/wrx/opencv-4.4.0/buildnew/3rdparty/ippicv/ippicv_lnx/iw
-- Lapack: NO
-- Eigen: YES (ver 3.3.4)
-- Custom HAL: NO
-- Protobuf: build (3.5.1)
--
-- OpenCL: YES (no extra features)
-- Include path: /home/wrx/opencv-4.4.0/3rdparty/include/opencl/1.2
-- Link libraries: Dynamic load
--
-- Python 2:
-- Interpreter: /usr/bin/python2.7 (ver 2.7.17)
-- Libraries: /usr/lib/x86_64-linux-gnu/libpython2.7.so (ver 2.7.17)
-- numpy: /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.13.3)
-- install path: lib/python2.7/dist-packages/cv2/python-2.7
--
-- Python (for build): /usr/bin/python2.7
--
-- Java:
-- ant: NO
-- JNI: NO
-- Java wrappers: NO
-- Java tests: NO
--
-- Install to: /home/wrx/opencv-4.4.0/buildnew/installed
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to: /home/wrx/opencv-4.4.0/buildnew
这里GUI有YES了，namedwindow可用了。
附录之环境变量
定义
环境变量是用来定义系统运行环境的参数，如每个用户不同的主目录(HOME)、邮件存放位置(MAIL)等。环境变量一般都大写。
查看
用下述命令查看系统的全部环境变量
env列出所有的环境变量export单独使用时与env一样echo $VAL查看VAL变量对应的值(区分大小写)，包含已添加的目录
常见环境变量及作用
| 环境变量名称 | 作用 |
|---|---|
| HOME | 用户主目录 |
| SHELL | 用户使用的Shell解释器名称 |
| PATH | 用户命令行解释器搜索用户执行命令的路径 |
| EDITOR | 默认文本编辑器 |
| RANDOM | 生成随机数字 |
| LANG | 系统语言 |
| HISTSIZE | 输出的历史命令记录条数 |
| HISTFILESIZE | 保存的历史命令记录条数 |
| PS1 | Bash解释器的提示符 |
| 邮件保存路径 |
创建环境变量
创建方式
- 添加到环境变量
PATH中，需要注意添加顺序
#加到PATH末尾
export PATH=$PATH:/path/to/your/dir
#加到PATH开头
export PATH=/path/to/your/dir:$PATH
- 直接用
export命名一个新的环境变量
export VAR_NAME=value
作用范围
-
当前终端。在终端中添加的环境变量是临时的，关闭终端或在另一个终端中，所添加的环境变量无效。
-
当前用户生效
-
全局
改变作用范围
export
References
- Ubuntu多版本OpenCV共存和切换https://blog.csdn.net/learning_tortosie/article/details/80594399
- Ubuntu安装使用多版本opencv https://blog.csdn.net/heyijia0327/article/details/54575245
- Ubuntu设置和查看环境变量https://blog.csdn.net/White_Idiot/article/details/78253004
- https://blog.csdn.net/u012816621/article/details/51732932
- vgg_generated_48.i#missing问题解决 https://blog.csdn.net/sinat_25923849/article/details/106071379
- ippicv及face_landmark_model#missing问题解决 https://zhuanlan.zhihu.com/p/81582710
- 多版本OpenCV的GUI如何生效 https://github.com/opencv/opencv/issues/8537#issuecomment-315159561