VS2017配置opencv扩展模块时cmaker错误

上回咱们说到VS2017+openCV3.4.6+openCV3.4.6 contrib扩展模块安装教程：https://blog.csdn.net/YHxiaohao/article/details/105900084

下面我们对cmaker出现错误进行解读，节选自其他博客，加上自己理解：

我遇到的错误是

#do_unpack “ippicv_2019_win_intel64_20180723_general.zip” “1d222685246896fe089f88b8858e4b2f” “https://raw.githubusercontent.com/opencv/opencv_3rdparty/32e315a5b106a7b89dbed51c28
f8120a48b368b4/ippicv/ippicv_2019_win_intel64_20180723_general.zip” “D:/Program
Files (x86)/opencv/opencv-build-x64/3rdparty/ippicv”

# 下载获取ippicv_2017u3_win_intel64_general_20170822.zip的过程
do_unpack "ippicv_2017u3_win_intel64_general_20170822.zip" "0421e642bc7ad741a2236d3ec4190bdd" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/dfe3162c237af211e98b8960018b564bc209261d/ippicv/ippicv_2017u3_win_intel64_general_20170822.zip" "D:/Kits/OpenCV/opencv-source/opencv-3.4.1/build/3rdparty/ippicv"
#cmake_download "D:/Kits/OpenCV/opencv-source/opencv-3.4.1/.cache/ippicv/0421e642bc7ad741a2236d3ec4190bdd-ippicv_2017u3_win_intel64_general_20170822.zip" "https://raw.githubusercontent.com/opencv/opencv_3rdparty/dfe3162c237af211e98b8960018b564bc209261d/ippicv/ippicv_2017u3_win_intel64_general_20170822.zip"
# timeout on name lookup is not supported

这一类，具体解读我们可以参考这篇文章：https://blog.csdn.net/KayChanGEEK/article/details/79919417讲的非常详细。无非是下载不下来，哪能怎么办呢，这里我把这些在.cach中的包附上，注意适用于opencv3.4.6和其配套扩展包。

          

链接：https://pan.baidu.com/s/1JD1WrikdIHvXMgaZrjXSYQ 
提取码：3b4d