qmake 下,配置文件路徑中有空格存在的情況:
INCLUDEPATH += $$quote(D:/Program Files/OpenCV 4.1.1/opencv/build/include) \
$$quote(D:/Program Files/OpenCV 4.1.1/opencv/build/include/opecv2)
# 庫文件
LIBS += -L$$quote(D:/Program Files/OpenCV 4.1.1/opencv/build/x64/vc15/lib) \
-lopencv_world411d