CMake Error at src/CMakeLists.txt:3 (find_package): By not providing "FindQt5.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "Qt5", but CMake did not find one.

这个错误提示意味着你的 CMakeLists.txt 文件中需要使用 Qt5，但是你的 CMake 没有找到 Qt5。

解决该问题的方法是确保你已经正确安装了 Qt5，并且将 Qt5 的路径添加到你的 CMake 模块路径中。

你可以尝试在 CMakeLists.txt 文件中使用以下代码来添加 Qt5 的模块路径：

set(CMAKE_PREFIX_PATH /path/to/Qt5)

其中 `/path/to/Qt5` 是你的 Qt5 安装路径。如果你的 Qt5 是通过包管理器安装的，那么可以尝试使用以下命令来设置 CMake 模块路径：

export CMAKE_PREFIX_PATH=/usr/lib/x86_64-linux-gnu/qt5

在这个例子中，我们假设 Qt5 是通过 apt 安装的，并且路径是 `/usr/lib/x86_64-linux-gnu/qt5`。

相关问题

CMake Error at CMakeLists.txt:9 (find_package): By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "OpenCV", but CMake did not find one.

这个错误是因为 CMake 在查找 OpenCV 时找不到对应的 `FindOpenCV.cmake` 文件，需要将该文件添加到 CMake 的模块路径中。

你可以尝试以下方法来解决这个问题：

1. 确认 OpenCV 是否已经正确安装并配置好了环境变量，如果没有安装，可以先下载并安装 OpenCV。

2. 将 `FindOpenCV.cmake` 文件复制到 CMake 的模块路径中。该文件通常位于 OpenCV 安装目录下的 `share/OpenCV` 目录中，可以将其复制到系统的 CMake 模块路径中，通常是 `/usr/share/cmake/Modules` 目录，或者将其复制到项目的根目录下。

3. 在项目的 `CMakeLists.txt` 文件中添加以下语句，将刚才复制的 `FindOpenCV.cmake` 文件所在的目录添加到 CMake 的模块路径中：

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} /path/to/FindOpenCV.cmake)

其中 `/path/to/FindOpenCV.cmake` 为 `FindOpenCV.cmake` 文件所在的路径。

4. 在 `CMakeLists.txt` 文件中添加以下语句，告诉 CMake 查找和链接 OpenCV 库：

find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
target_link_libraries(your_target ${OpenCV_LIBS})

其中 `your_target` 是你的项目名，`OpenCV_INCLUDE_DIRS` 和 `OpenCV_LIBS` 是 CMake 查找到的 OpenCV 库的路径和库文件名。

CMake Error at G:\RMMMMM\ore\CMakeLists.txt:18 (find_package): By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "OpenCV", but CMake di

d not find one.

The error message suggests that CMake was unable to locate the "OpenCV" package. This is likely because the "FindOpenCV.cmake" module was not found in the CMAKE_MODULE_PATH.

To resolve this issue, you can try the following steps:

1. Make sure that you have installed OpenCV on your system. You can download it from the official OpenCV website.

2. Check if the "FindOpenCV.cmake" module is present in your CMake installation. It is usually located in the "Modules" directory of your CMake installation.

3. If the module is not present, you can try downloading it from the CMake repository or searching for it online. Make sure to place it in a directory that is included in the CMAKE_MODULE_PATH.

4. Alternatively, you can manually set the OpenCV variables in your CMakeLists.txt file. You can use the following commands:

   set(OpenCV_DIR <path/to/opencv>)
   find_package(OpenCV REQUIRED)

Replace `<path/to/opencv>` with the actual path to your OpenCV installation directory.

5. After making the necessary changes, try running CMake again. If everything is set up correctly, the "OpenCV" package should be found without any errors.

I hope this helps! Let me know if you have any further questions.