使用cmake 编译opencv编译opencv时会出现这样的警告提示
打开记录日记后时发现是因为网络连接问题缺失部分文件
#use_cache “C:/Users/rgzn/Desktop/opencv/opencv-3.4.3/.cache” #do_copy “opencv_ffmpeg.dll” “fa5a2a4e2f37defcb95bde8ed145c2b3” “https://raw.githubusercontent.com/opencv/opencv_3rdparty/8041bd6f5ad37045c258904ba3030bb3442e3911/ffmpeg/opencv_ffmpeg.dll” “C:/Users/rgzn/Desktop/opencv/vs_opencv/3rdparty/ffmpeg” #missing “C:/Users/rgzn/Desktop/opencv/vs_opencv/3rdparty/ffmpeg/opencv_ffmpeg.dll” #check_md5 “C:/Users/rgzn/Desktop/opencv/opencv-3.4.3/.cache/ffmpeg/fa5a2a4e2f37defcb95bde8ed145c2b3-opencv_ffmpeg.dll” #mismatch_md5 “C:/Users/rgzn/Desktop/opencv/opencv-3.4.3/.cache/ffmpeg/fa5a2a4e2f37defcb95bde8ed145c2b3-opencv_ffmpeg.dll” “d41d8cd98f00b204e9800998ecf8427e” #delete “C:/Users/rgzn/Desktop/opencv/opencv-3.4.3/.cache/ffmpeg/fa5a2a4e2f37defcb95bde8ed145c2b3-opencv_ffmpeg.dll” #cmake_download “C:/Users/rgzn/Desktop/opencv/opencv-3.4.3/.cache/ffmpeg/fa5a2a4e2f37defcb95bde8ed145c2b3-opencv_ffmpeg.dll” “https://raw.githubusercontent.com/opencv/opencv_3rdparty/8041bd6f5ad37045c258904ba3030bb3442e3911/ffmpeg/opencv_ffmpeg.dll” timeout on name lookup is not supported Trying 0.0.0.0… TCP_NODELAY set connect to 0.0.0.0 port 443 failed: Address not available Failed to connect to raw.githubusercontent.com port 443: Address not available Closing connection 0
以其中一例解释 看日志我们可以得到信息
缺失的部分是 opencv_ffmpeg.dll在哪里下载？ https://raw.githubusercontent.com/opencv/opencv_3rdparty/8041bd6f5ad37045c258904ba3030bb3442e3911/ffmpeg/opencv_ffmpeg.dll怎么命名？ md5-文件名 fa5a2a4e2f37defcb95bde8ed145c2b3-opencv_ffmpeg.dll放在哪里？ “C:/Users/rgzn/Desktop/opencv/opencv-3.4.3/.cache/ffmpeg/fa5a2a4e2f37defcb95bde8ed145c2b3-opencv_ffmpeg.dll”后面的都一样一个一个下载就ok
访问不了raw.githubusercontent.com 怎么办
https://site.ip138.com/raw.Githubusercontent.com/
输入raw.githubusercontent.com
查询IP地址
修改hosts
打开C:\Windows\System32\drivers\etc\hosts,(需要使用管理员权限打开)
添加以下内容保存即可 （IP地址查询后相应修改，可以ping不同IP的延时 选择最佳IP地址）
# GitHub Start 52.74.223.119 github.com 192.30.253.119 gist.github.com 54.169.195.247 api.github.com 185.199.111.153 assets-cdn.github.com ==151.101.76.133 raw.githubusercontent.com== 151.101.108.133 user-images.githubusercontent.com 151.101.76.133 gist.githubusercontent.com 151.101.76.133 cloud.githubusercontent.com 151.101.76.133 camo.githubusercontent.com 151.101.76.133 avatars0.githubusercontent.com 151.101.76.133 avatars1.githubusercontent.com 151.101.76.133 avatars2.githubusercontent.com 151.101.76.133 avatars3.githubusercontent.com 151.101.76.133 avatars4.githubusercontent.com 151.101.76.133 avatars5.githubusercontent.com 151.101.76.133 avatars6.githubusercontent.com 151.101.76.133 avatars7.githubusercontent.com 151.101.76.133 avatars8.githubusercontent.com # GitHub End下载后放置原位重新编译即可！
缺失的文件也可以直接在这里下载 https://download.csdn.net/download/jjookkeerr95/12810003
