Question

我按照this教程安装OpenCV，所有步骤一直有效，直到我到达安装部分。我做了以下事情：

mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/usr/local \
    -D INSTALL_C_EXAMPLES=OFF \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.3.0/modules \
    -D BUILD_EXAMPLES=ON ..

该命令执行了多次测试并显示了OpenCV 3.3.0的常规配置，但最后我收到了以下错误：

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
Protobuf_LIBRARY
    linked by target "opencv_dnn_modern" in directory /home/pi/opencv_contrib-3.3.0/modules/dnn_modern

-- Configuring incomplete, errors occurred!
See also "/home/pi/opencv-3.3.0/build/CMakeFiles/CMakeOutput.log".
See also "/home/pi/opencv-3.3.0/build/CMakeFiles/CMakeError.log".

我有一个opencv_contrib-3.3.0目录，而不是opencv_contrib，这就是为什么我将-3.3.0包含在make中。

Answer 1

我通过以下步骤解决了这个问题：

删除opencv目录中的构建文件夹
重新构建构建文件夹：mkdir build
转到该构建目录：cd build

在make中添加以下行：-D BUILD_opencv_dnn_modern=OFF 并运行如下：

cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D INSTALL_C_EXAMPLES=OFF \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D BUILD_opencv_dnn_modern=OFF \
-D ENABLE_NEON=ON \
-D ENABLE_VFPV3=ON \
-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.3.0/modules \
-D BUILD_EXAMPLES=ON ..

在Raspberry Pi中配置OpenCV时，使用Protobuf库获取CMake错误

1 个答案: