c++ - 为什么我不能构建opencv WITH_QT？

Question

我已经在Windows 7 x64上安装了Qt5.12。和CMake 3.16。

我想构建OpenCV-4.1.2。因此，在cmake中，我检查了WITH_QT并将QT5_DIR指定为:C:\\Qt\\5.12.6，然后单击“配置”。但是我得到这个错误:

CMake Error at cmake/OpenCVFindLibsGUI.cmake:18 (find_package):
  Could not find a package configuration file provided by "Qt5" with any of
  the following names:

    Qt5Config.cmake
    qt5-config.cmake

  Add the installation prefix of "Qt5" to CMAKE_PREFIX_PATH or set "Qt5_DIR"
  to a directory containing one of the above files.  If "Qt5" provides a
  separate development package or SDK, be sure it has been installed.
Call Stack (most recent call first):
  CMakeLists.txt:669 (include)"

Answer 1

我终于知道了:我在Qt目录中搜索Qt5Config.cmake，并在以下位置找到了它:“C:\ Qt \ 5.12.6 \ msvc2017_64 \ lib \ cmake \ Qt5”。

现在，我在CMake中指定此目录，然后单击“配置”。一切正常。感谢你们。