我已经在我的系统上使用opencv python很长一段时间了,因为我主要在python3上工作。然而,现在,我一直在尝试运行一个用C编写的存储库,它使用opencv C。
我没有安装opencv C++,因为我认为opencv python只是opencv C的 Package 器,所以它必须有运行opencv C所需的代码。
但是,在运行make
时,我得到了诸如undefined reference to 'cv::String::deallocate()'
之类的错误
我正在查看其他链接,如Undefined reference to `cv::String::deallocate()' error in OpenCV 3.4.3和What is an undefined reference/unresolved external symbol error and how do I fix it?,但这让我有点困惑。如何设置第一个链接中提到的依赖项?
EDIT:下面是make命令输出的最后一部分,也就是我得到错误的地方:
我的Makefile
处理opencv的部分有OPENCV_CFLAGS
和OPENCV_LIBS
标志。以下是Makefile
的一部分:
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OPENCV_CFLAGS = -I/usr/local/include/opencv4
OPENCV_LIBS = -L/usr/local/lib -lopencv_gapi -lopencv_stitching -lopencv_alphamat -lopencv_aruco -lopencv_bgsegm -lopencv_bioinspired -lopencv_ccalib -lopencv_cudabgsegm -lopencv_cudafeatures2d -lopencv_cudaobjdetect -lopencv_cudastereo -lopencv_dnn_objdetect -lopencv_dnn_superres -lopencv_dpm -lopencv_face -lopencv_freetype -lopencv_fuzzy -lopencv_hdf -lopencv_hfs -lopencv_img_hash -lopencv_intensity_transform -lopencv_line_descriptor -lopencv_mcc -lopencv_quality -lopencv_rapid -lopencv_reg -lopencv_rgbd -lopencv_saliency -lopencv_sfm -lopencv_stereo -lopencv_structured_light -lopencv_phase_unwrapping -lopencv_superres -lopencv_surface_matching -lopencv_tracking -lopencv_highgui -lopencv_datasets -lopencv_text -lopencv_plot -lopencv_videostab -lopencv_cudaoptflow -lopencv_optflow -lopencv_cudalegacy -lopencv_videoio -lopencv_cudawarping -lopencv_wechat_qrcode -lopencv_xfeatures2d -lopencv_shape -lopencv_ml -lopencv_ximgproc -lopencv_video -lopencv_dnn -lopencv_xobjdetect -lopencv_objdetect -lopencv_calib3d -lopencv_imgcodecs -lopencv_features2d -lopencv_flann -lopencv_xphoto -lopencv_photo -lopencv_cudaimgproc -lopencv_cudafilters -lopencv_imgproc -lopencv_cudaarithm -lopencv_core -lopencv_cudev
P.S.:我发现allocate()和dealocate()已经在cvstd中声明了。hpp和我在同一个文件中看到它们的定义。但我不知道为什么链接器找不到它。
此外,我的Makefile已经设置了诸如-lopencv_core -lopencv_highgui -lopencv_imgproc
之类的依赖项。我不知道为什么我仍然得到一个链接错误。
P.P.S.:我是C++的新手,所以很多代码编译过程对我来说都是陌生的。任何帮助将不胜感激。
1条答案
按热度按时间bybem2ql1#
我修正了错误。感谢@Scheff'sCat的评论。我的系统中唯一的opencv版本是opencv 4。5.2.
我不确定我的回答对每个人都有多大帮助,因为这个问题更具体。我在工作中使用一个公共桌面,基于其他用户如何安装软件包和移动文件夹,文件夹结构有点奇怪。
/usr/local/include/opencv4/opencv2
包含了我试图构建的repo所需的所有文件。但是make命令访问/usr/include/opencv2
,而/usr/include/opencv2
并不包含存储库所需的几个文件。我只需要将/usr/local/include/opencv4/opencv2
的内容移动到/usr/include/opencv2
,make
就可以工作了。