win10下编译opencv4.5.1的过程记录
win10下编译opencv其实也不复杂,准备工具:
1. cmake-3.19.2
2. opencv源码4.5.1
3.opencv-contrib源码4.5.1
4.opencv-thirdpart, 最新版
其他的依赖,这里一笔带过,能多准备就多准备把。
这里只说ffmpeg和ippcv.
第一个拉仇恨的是ffmpeg。
这里只说关键点:
1. 在源码中找到 D:\win10\opencv400\opencv\sources\3rdparty\ffmpeg\ffmpeg.cmake 文件
看到第一行的编号,到opencv-thirdpart项目中把它checkout出来;
核对 FFMPEG_FILE_HASH_CMAKE 是否一致,如果不一致,修改D:\win10\opencv400\opencv\sources\3rdparty\ffmpeg\ffmpeg.cmake 文件
然后,修改为大致如下的结果:
# Binaries branch name: ffmpeg/master_20181106 # Binaries were created for OpenCV: 2c6f1ab57d4250ee46e32d1b51c056431965b470 ocv_update(FFMPEG_BINARIES_COMMIT "759a23e24ab787a0979f8a93103dcc3105ec10c1") ocv_update(FFMPEG_FILE_HASH_BIN32 "849286ccc527c99e5a218b67f13c6e8c") ocv_update(FFMPEG_FILE_HASH_BIN64 "96444a4645753aaafa296479665c9185") ocv_update(FFMPEG_FILE_HASH_CMAKE "f710891525a04586d565d0e700e62a9c") function(download_win_ffmpeg script_var) set(${script_var} "" PARENT_SCOPE) set(ids BIN32 BIN64 CMAKE) set(name_BIN32 "opencv_ffmpeg.dll") set(name_BIN64 "opencv_ffmpeg_64.dll") set(name_CMAKE "ffmpeg_version.cmake") set(FFMPEG_DOWNLOAD_DIR "${OpenCV_BINARY_DIR}/3rdparty/ffmpeg") set(status TRUE) foreach(id ${ids}) if( 0 ) ocv_download(FILENAME ${name_${id}} HASH ${FFMPEG_FILE_HASH_${id}} URL "$ENV{OPENCV_FFMPEG_URL}" "${OPENCV_FFMPEG_URL}" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/${FFMPEG_BINARIES_COMMIT}/ffmpeg/" DESTINATION_DIR ${FFMPEG_DOWNLOAD_DIR} ID FFMPEG RELATIVE_URL STATUS res) endif( 0 ) set(status TRUE) if(NOT res) set(status FALSE) endif() endforeach() if(status) set(${script_var} "${FFMPEG_DOWNLOAD_DIR}/ffmpeg_version.cmake" PARENT_SCOPE) endif() endfunction() if(OPENCV_INSTALL_FFMPEG_DOWNLOAD_SCRIPT) configure_file("${CMAKE_CURRENT_LIST_DIR}/ffmpeg-download.ps1.in" "${CMAKE_BINARY_DIR}/win-install/ffmpeg-download.ps1" @ONLY) install(FILES "${CMAKE_BINARY_DIR}/win-install/ffmpeg-download.ps1" DESTINATION "." COMPONENT libs) endif() ocv_install_3rdparty_licenses(ffmpeg license.txt readme.txt)
这样,点击cmake, config, 应该还是会报错,因为 .cache/中的 ffmpeg_version.cmake 在cmakefile的生成目录中缺少了这个文件。
于是,找到对应的目录,将 ffmpeg_version.cmake 拷贝过去。
再cmake, config 。
一般就能成功了。
ippcv部分差不多也是这个过程。
enjoy!
wish you healthy!
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每一个不曾起舞的日子,都是对生命的辜负。
But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthward, downward, into the dark, the deep - into evil.
其实人跟树是一样的,越是向往高处的阳光,它的根就越要伸向黑暗的地底。----尼采
每一个不曾起舞的日子,都是对生命的辜负。
But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthward, downward, into the dark, the deep - into evil.
其实人跟树是一样的,越是向往高处的阳光,它的根就越要伸向黑暗的地底。----尼采