系統：jetson-nano-jp451-sd-card-image
ubuntu 18.04

（總共編譯得2-3個多小時，大家耐心吧，時間相較于其它的已經很短了）
注意：！！make -j8以后千萬別在動了，還有就是開始前把那些后臺啥的都關掉，千萬別在make -j8期間操作，要不然報錯。

ps：如果你們編譯其它的版本，我在這提供11個文件，你們得放到/opencv-contrib/modules/xfeatures2d/src/這個里面。
你們還得下載opencv和opencv-contrib的包，官網給你們放著，編譯步驟參考我這個原理是一樣的，得注意，他們兩個的版本應該一樣的。
官網：https://github.com/opencv/
鏈接：https://pan.baidu.com/s/1Jcu6g80qlp-5A3FrZ6VO8Q?pwd=0lzt
提取碼：0lzt

1.下載源碼，我提供的鏈接如下：

鏈接：https://pan.baidu.com/s/1QsrI67HmHXV59k6RetSMUQ?pwd=55d4
提取碼：55d4

1.1文件上傳的路徑位置，注意ymck是我自己的用戶名（你們自己換成你們自己相對應的就行）

2.解壓文件

unzip opencv4.4.zip

3.安裝依賴

#1.
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple scikit-build==0.11.1
##注意，必須是這個版本，否則會報錯，調試好久。。。#里面有些處理視頻和圖像的我就不在這單獨說明了
#2.
sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
#3.
sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
#4.    
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-22-dev
#5.    
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
#6.    
sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
#7.
sudo apt-get install cmake libgtk2.0-dev libavcodec-dev libavformat-dev libjpeg-dev libpng-dev libtiff-dev libtiff5-dev libswscale-dev libcurl4-openssl-dev libtbb2 libdc1394-22-dev

4.增加swap交換內存

下面這個swap可以操作，也可以不操作，最好選一個吧。

4.1臨時增加交換內存swap

sudo fallocate -l 4G /var/swapfile
sudo chmod 600 /var/swapfile #600是root權限，644是普通用戶也行
sudo mkswap /var/swapfile
sudo swapon /var/swapfile

4.2永久增加swap

sudo fallocate -l 4G /var/swapfile
sudo chmod 600 /var/swapfile
sudo mkswap /var/swapfile
sudo swapon /var/swapfile
sudo bash -c 'echo "/var/swapfile swap swap defaults 0 0" >> /etc/fstab'

5.安裝opencv4.4（里面是有contrib這個的）

5.1創建目錄

#1.
cd opencv4.4/opencv-4.4.0/
#2.
mkdir build
#3.
cd build

5.2安裝配置cmake選項

注意，里面ymck是我的用戶名，大家自行修改，換成你們自己的！

cmake \
-D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D INSTALL_C_EXAMPLES=OFF \
-D INSTALL_TESTS=OFF \
-D WITH_FFMPEG=ON \
-D WITH_GSTREAMER=ON \
-D WITH_V4L=ON \
-D WITH_OPENEXR=OFF \
-D CUDA_ARCH_BIN=5.3 \
-D CUDA_ARCH_PTX="" \
-D CMAKE_CXX_FLAGS="-W -Wall -Werror=return-type" \
-D BUILD_PNG=ON \
-D BUILD_TIFF=ON \
-D BUILD_TBB=OFF \
-D BUILD_JPEG=ON \
-D BUILD_JASPER=OFF \
-D BUILD_ZLIB=OFF \
-D BUILD_EXAMPLES=OFF \
-D BUILD_opencv_java=OFF \
-D BUILD_opencv_python2=OFF \
-D BUILD_opencv_python3=ON \
-D ENABLE_PRECOMPILED_HEADERS=OFF \
-D WITH_OPENCL=OFF \
-D WITH_OPENMP=OFF \
-D WITH_GSTREAMER_0_10=OFF \
-D WITH_CUDA=ON \
-D WITH_GTK=ON \
-D WITH_VTK=OFF \
-D WITH_1394=OFF \
-D CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-10.2 \
-D OPENCV_ENABLE_NONFREE=ON \
-D OPENCV_EXTRA_MODULES_PATH=/home/ymck/opencv4.4/opencv_contrib-4.4.0/modules \
-D PYTHON3_EXECUTABLE=/home/ymck/archiconda3/envs/dc39/bin/python \
-D PYTHON3_INCLUDE_DIR=/home/ymck/archiconda3/envs/dc39/include/python3.9 \
-D PYTHON_DEFAULT_EXECUTABLE=$(which python3) \
-D PYTHON3_LIBRARY=/home/ymck/archiconda3/envs/dc39/lib/libpython3.9.so \
..

大家可以看我的結果（如果buidl目錄被玩壞了，可以新建一個其它的在進行cmake,我把這個結果放到最后面：）,大家往下看，一定這幾個得出現，要不然弄了可能找不到opencv4.4，雖然不報錯也能安裝成功，但是你導入cv2，會報錯，而且你也找不到這個包，which python你們可以用這個代碼查找相應的路徑，一般和我這個路徑差不多

#####################################
#這里面的代碼不是運行的
#這里面的代碼是讓你們對照自己的camke是否正確的
--   Python 3:
--     Interpreter:                 /home/ymck/archiconda3/envs/dc39/bin/python (ver 3.9.13)
--     Libraries:                   /home/ymck/archiconda3/envs/dc39/lib/libpython3.9.so (ver 3.9.13)
--     numpy:                       /home/ymck/archiconda3/envs/dc39/lib/python3.9/site-packages/numpy/core/include (ver 1.26.4)
--     install path:                lib/python3.9/site-packages/cv2/python-3.9
-- 
--   Python (for build):            /home/ymck/archiconda3/envs/dc39/bin/python3
#####################################

5.3編譯！！一定要增大swap否則會報錯！！！！！

make -j8

5.3.1報錯，一條cuda，一條內存不足，導致報錯，所以大家一定要增大swap交換內存！！！！！！！！！！！，

5.3.2解決問題

增大swap，之前是1.9G，現在是5.9G，reboot以后即可恢復

現在未報錯，可以看到swap的確跑到2.5G了，說明的確有點費swap

5.4開始安裝

sudo make install

運行結果如下：

5.4.1waning解釋，這是對開發者的一個警告，對咱們來說沒啥問題我解釋一下

CMake提醒開發者，它默認的FindCUDA模塊已經被移除，會影響到之前依賴這個模塊的構建腳本。這不會影響到項目的構建過程，只是作為一個提醒開發者進行代碼維護的提示。

6.復制編譯過程中的文件到自己在虛擬環境中的dist-packages,這樣你就可以導入這個cv2了

這個python中的python3.9就是你編譯過程中產生的

cp /usr/local/lib/python3.9/site-packages/cv2/python-3.9/cv2.cpython-39-aarch64-linux-gnu.so /home/ymck/archiconda3/envs/dc39/lib/python3.9/site-packages/

復制完成以后結果如下：

7.查看opencv版本

#1.
python
#2.
import cv2
#3.
print(cv2.__version__)

到這就說明大家成功編譯完成啦，祝大家都成功呀！！！

8.安裝過程

如下圖：

大家可以看我的結果（如果buidl目錄被玩壞了，可以新建一個其它的在進行cmake,我把這個結果放到最后面：

#這個是cmake以后的輸出的結果：
# 大家可以自己對照一下，有些實在安裝不上（java啥的，比較ubuntu18實在太老了。
#如果你們用的版本高，你們運行前面安裝依賴的話，應該不會出現我下面這些no found。
#還有就是，一些warning，因為我升級了cmake版本，這些對咱們沒啥影響，#warning不影響，那些warning是對開發者的一些提醒，遇見了不用在意。
-- CUDA detected: 10.2
-- CUDA: Using CUDA_ARCH_BIN=5.3
-- CUDA NVCC target flags: -gencode;arch=compute_53,code=sm_53;-D_FORCE_INLINES
-- 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) 
-- Could NOT find JNI (missing: JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 AWT JVM) 
CMake Deprecation Warning at 3rdparty/carotene/hal/CMakeLists.txt:1 (cmake_minimum_required):Compatibility with CMake < 3.5 will be removed from a future version ofCMake.Update the VERSION argument <min> value or use a ...<max> suffix to tellCMake that the project does not need compatibility with older versions.CMake Deprecation Warning at 3rdparty/carotene/CMakeLists.txt:1 (cmake_minimum_required):Compatibility with CMake < 3.5 will be removed from a future version ofCMake.Update the VERSION argument <min> value or use a ...<max> suffix to tellCMake that the project does not need compatibility with older versions.-- OpenCV Python: during development append to PYTHONPATH: /home/ymck/opencv4.4/opencv-4.4.0/build1/python_loader
-- Caffe:   NO
-- Protobuf:   NO
-- Glog:   NO
-- freetype2:   YES (ver 21.0.15)
-- harfbuzz:    YES (ver 1.7.2)
-- Could NOT find HDF5 (missing: HDF5_LIBRARIES HDF5_INCLUDE_DIRS) (found version "")
-- 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: 'int'
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.sse2.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.sse3.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.ssse3.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.sse4_1.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.sse4_2.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.avx.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.avx2.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin128.avx512_skx.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin256.avx2.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin256.avx512_skx.cpp
-- Excluding from source files list: <BUILD>/modules/core/test/test_intrin512.avx512_skx.cpp
-- Excluding from source files list: modules/imgproc/src/corner.avx.cpp
-- Excluding from source files list: modules/imgproc/src/imgwarp.avx2.cpp
-- Excluding from source files list: modules/imgproc/src/imgwarp.sse4_1.cpp
-- Excluding from source files list: modules/imgproc/src/resize.avx2.cpp
-- Excluding from source files list: modules/imgproc/src/resize.sse4_1.cpp
-- Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': /home/ymck/opencv4.4/opencv-4.4.0/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
-- opencv_dnn: filter out ocl4dnn source code
-- Excluding from source files list: <BUILD>/modules/dnn/layers/layers_common.avx.cpp
-- Excluding from source files list: <BUILD>/modules/dnn/layers/layers_common.avx2.cpp
-- Excluding from source files list: <BUILD>/modules/dnn/layers/layers_common.avx512_skx.cpp
-- Excluding from source files list: modules/features2d/src/fast.avx2.cpp
-- 
-- General configuration for OpenCV 4.4.0 =====================================
--   Version control:               unknown
-- 
--   Extra modules:
--     Location (extra):            /home/ymck/opencv4.4/opencv_contrib-4.4.0/modules
--     Version control (extra):     unknown
-- 
--   Platform:
--     Timestamp:                   2024-03-03T06:54:55Z
--     Host:                        Linux 4.9.201-tegra aarch64
--     CMake:                       3.28.3
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               RELEASE
-- 
--   CPU/HW features:
--     Baseline:                    NEON FP16
--       required:                  NEON
--       disabled:                  VFPV3
-- 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ standard:                11
--     C++ Compiler:                /usr/bin/c++  (ver 7.5.0)
--     C++ flags (Release):         -W -Wall -Werror=return-type   -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 -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -W -Wall -Werror=return-type   -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 -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -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 -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -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 -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      -Wl,--gc-sections -Wl,--as-needed  
--     Linker flags (Debug):        -Wl,--gc-sections -Wl,--as-needed  
--     ccache:                      NO
--     Precompiled headers:         NO
--     Extra dependencies:          m pthread cudart_static dl rt nppc nppial nppicc nppicom nppidei nppif nppig nppim nppist nppisu nppitc npps cublas cudnn cufft -L/usr/local/cuda-10.2/lib64 -L/usr/lib/aarch64-linux-gnu
--     3rdparty dependencies:
-- 
--   OpenCV modules:
--     To be built:                 alphamat aruco bgsegm bioinspired calib3d ccalib core cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor ml objdetect optflow phase_unwrapping photo plot python3 quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab xfeatures2d ximgproc xobjdetect xphoto
--     Disabled:                    python2 world
--     Disabled by dependency:      -
--     Unavailable:                 cnn_3dobj cvv hdf java js julia matlab ovis sfm viz
--     Applications:                tests perf_tests apps
--     Documentation:               NO
--     Non-free algorithms:         YES
-- 
--   GUI: 
--     GTK+:                        YES (ver 3.22.30)
--       GThread :                  YES (ver 2.56.4)
--       GtkGlExt:                  NO
-- 
--   Media I/O: 
--     ZLib:                        /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.11)
--     JPEG:                        build-libjpeg-turbo (ver 2.0.5-62)
--     WEBP:                        build (ver encoder: 0x020f)
--     PNG:                         build (ver 1.6.37)
--     TIFF:                        build (ver 42 - 4.0.10)
--     JPEG 2000:                   build Jasper (ver 1.900.1)
--     HDR:                         YES
--     SUNRASTER:                   YES
--     PXM:                         YES
--     PFM:                         YES
-- 
--   Video I/O:
--     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:
--     Lapack:                      NO
--     Eigen:                       YES (ver 3.3.4)
--     Custom HAL:                  YES (carotene (ver 0.0.1))
--     Protobuf:                    build (3.5.1)
-- 
--   NVIDIA CUDA:                   YES (ver 10.2, CUFFT CUBLAS)
--     NVIDIA GPU arch:             53
--     NVIDIA PTX archs:
-- 
--   cuDNN:                         YES (ver 8.0.0)
-- 
--   Python 3:
--     Interpreter:                 /home/ymck/archiconda3/envs/dc39/bin/python (ver 3.9.13)
--     Libraries:                   /home/ymck/archiconda3/envs/dc39/lib/libpython3.9.so (ver 3.9.13)
--     numpy:                       /home/ymck/archiconda3/envs/dc39/lib/python3.9/site-packages/numpy/core/include (ver 1.26.4)
--     install path:                lib/python3.9/site-packages/cv2/python-3.9
-- 
--   Python (for build):            /home/ymck/archiconda3/envs/dc39/bin/python3
-- 
--   Java:                          
--     ant:                         NO
--     JNI:                         NO
--     Java wrappers:               NO
--     Java tests:                  NO
-- 
--   Install to:                    /usr/local
-- -----------------------------------------------------------------
-- 
-- Configuring done (13.4s)
-- Generating done (3.2s)
-- Build files have been written to: /home/ymck/opencv4.4/opencv-4.4.0/build1
(dc39) ymck@ymck-desktop:~/opencv4.4/opencv-4.4.0/build1$