win10基于QT5.14.2搭建opencv4.2.0编译出现无法找到bin文件: Permission denied问题

Question

昨天试着在QT上搭建opencv4.2.0版本，结果巨坑，老是出现这个问题：
error: cannot find D:\OPENCV\CV4.2.0\OPENC_QT\install\x64\mingw\lib: Permission denied

上网找过很多解决的方案，都不行，有在工程文件里添加

而且试过特别多的版本，说添加什么什么都不行，也试过什么修改后构建+qmake的那种，不行

也没有说的那种多了斜杠的问题

环境变量能加的都试了

还是这样子，特别绝望

Answer 1

opencv需要自己重编译或下载网上重编译好的.
.pro文件要加上类似下面的：
INCLUDEPATH += D:\opencv3.4.6\opencv\build\include

LIBS += E:\opencv-build\bin\libopencv_core346.dll
LIBS += E:\opencv-build\bin\libopencv_highgui346.dll
LIBS += E:\opencv-build\bin\libopencv_imgcodecs346.dll
LIBS += E:\opencv-build\bin\libopencv_imgproc346.dll
LIBS += E:\opencv-build\bin\libopencv_features2d346.dll
LIBS += E:\opencv-build\bin\libopencv_calib3d346.dll
LIBS += E:\opencv-build\bin\libopencv_videoio346.dll

环境变量要加上编译好的opencv的bin路径：（注意与上的区别，我是自己用CMake重编译的）
E:\opencv-build\install\x86\mingw\bin