Question

我克隆，编译并安装了OpenCV的主分支：

cmake .. -DCMAKE_INSTALL_PREFIX=/some/non-system-path \ 
         -DCMAKE_BUILD_TYPE=RelWithDebInfo \
         -DCMAKE_INSTALL_RPATH=/some/non-system-path

make
make install

通常的东西，除了我在用户路径中安装它。为了测试它，我尝试运行以下＆＃34; hello world＆＃34;例如：

#include <stdio.h>
#include <opencv2/opencv.hpp>
using namespace cv;
int main(int argc, char** argv )
{
    if ( argc != 2 )
    {
        printf("usage: DisplayImage.out <Image_Path>\n");
        return -1;
    }
    Mat image;
    image = imread( argv[1], 1 );
    if ( !image.data )
    {
        printf("No image data \n");
        return -1;
    }
    namedWindow("Display Image", WINDOW_AUTOSIZE );
    imshow("Display Image", image);
    waitKey(0);
    return 0;
}

使用以下CMakeLists.txt：

cmake_minimum_required(VERSION 2.8)
project( DisplayImage )
find_package( OpenCV REQUIRED )
include_directories( ${OpenCV_INCLUDE_DIRS} )
add_executable( DisplayImage main.cpp )
target_link_libraries( DisplayImage ${OpenCV_LIBS} )

请注意，这是OpenCV的确切示例。它失败了以下内容：

[ 50%] Building CXX object CMakeFiles/DisplayImage.dir/main.cpp.o
make[2]: *** No rule to make target 'opencv_calib3d-NOTFOUND', needed by 'DisplayImage'.  Stop.
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/DisplayImage.dir/all' failed
make[1]: *** [CMakeFiles/DisplayImage.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

查看/some/non-system-path/lib，libopencv_calib3d.so指向libopencv_calib3d.so.3.3.1。

我认为这可能是link_directories问题，但是，设置它也没有解决问题。至于${OpenCV_LIBS}我打印了它，我得到了：

message(STATUS "OpenCV_LIBS = ${OpenCV_LIBS}")
-- OpenCV_LIBS = opencv_calib3d;opencv_core;opencv_dnn;opencv_features2d;opencv_flann;opencv_highgui;opencv_imgcodecs;opencv_imgproc;opencv_ml;opencv_objdetect;opencv_photo;opencv_shape;opencv_stitching;opencv_superres;opencv_video;opencv_videoio;opencv_videostab;opencv_viz

有什么想法吗？

Answer 1

在Windows 10上使用CMake在Visual Studio 2019上构建OpenCV时遇到了这个问题。 x64-Debug配置已成功构建，但是x64-Release出现了opencv_calib3d-NOTFOUND错误。

alalek comment的引用：

OpenCV支持的内部版本仅调试和发行。完全不支持其他构建配置，并且不应用适当的编译器标志。

我注意到CMakeSettings.json具有RelWithDebInfo的{{1}}配置类型。因此，我将其更改为x64-Release配置类型，从而解决了该问题。

P。 S。here中也描述了可能的解决方案，但我没有尝试。

链接到从源构建的OpenCV时的Cmake问题

1 个答案: