Question

我在项目中运行CMake（实际上是rosmake）时收到错误。我已经安装了OpenCV，但是我收到以下错误：

Linking CXX shared library ../lib/libCornerHelper.so
  /usr/bin/ld: cannot find -lopencv_contrib
  /usr/bin/ld: cannot find -lopencv_legacy
  /usr/bin/ld: cannot find -lopencv_stitching
  /usr/bin/ld: cannot find -lopencv_gpu
  /usr/bin/ld: cannot find -lopencv_objdetect
  /usr/bin/ld: cannot find -lopencv_calib3d
  /usr/bin/ld: cannot find -lopencv_features2d
  /usr/bin/ld: cannot find -lopencv_video
  /usr/bin/ld: cannot find -lopencv_highgui
  /usr/bin/ld: cannot find -lopencv_ml
  /usr/bin/ld: cannot find -lopencv_imgproc
  /usr/bin/ld: cannot find -lopencv_flann
  /usr/bin/ld: cannot find -lopencv_core
  collect2: ld returned 1 exit status
  make[3]: *** [../lib/libCornerHelper.so] Error 1

有谁知道如何解决这个问题？

Answer 1

显然，他找不到opencv来链接你的项目。您是否在/ usr或/ usr / local以外的其他地方安装了它？

如果是这样，您需要添加LD_LIBRARY_PATH变量的路径，依此类推。你运行它时系统会说什么？

pkg-config --cflags --libs opencv

如果你得到这样的东西，那么你的系统就可以了。

-I/opt/opencv/include/opencv -I/opt/opencv/include  -L/opt/opencv/lib -lopencv_core -lopencv_imgproc -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_features2d -lopencv_calib3d -lopencv_objdetect -lopencv_contrib -lopencv_legacy -lopencv_flann

但如果你不这样做，你的系统将无法找到它，cmake也找不到它：

Package opencv was not found in the pkg-config search path. Perhaps you should add the directory containing `opencv.pc' to the PKG_CONFIG_PATH environment variable No package 'opencv' found

Answer 2

如果您在ROS中使用OpenCV，如果您在manifest.xml文件中声明了对opencv2的依赖，则应自动选择相应的链接标记和路径。

如果您仍有问题，建议您搜索ROS Answers，如果找不到任何问题，请在那里提问。这是官方的ROS支持论坛，可能会比StackOverflow更好地解决ROS特定问题。

在Ubuntu中编译基于OpenCV和ROS的项目

2 个答案: