Xavier(3):Project ‘*‘ specifies ‘/usr/include/opencv‘ as an include dir, which is not found.

opencv文件目录找不到

grid_map_cv

cv_bridge

voronoi(维诺图)

解决方案1----修改报错的文件

解决方案2----制作软连接--推荐

制作软连接参考1

制作软连接参考2

参考链接：

Xavier卸载opencv及安装opencv3.x

opencv文件目录找不到

Xavier卸载opencv后，会让一些与opencv有关的包在使用时报错，这是因为这些opencv目录被删除，或者尽管有这个目录/文件，但文件的存储非常小----大概是无效文件

报错参考如下，报错是“/usr/include/opencv”这个目录找不到，这个目录是opencv的头文件目录

grid_map_cv

  Project 'grid_map_cv' specifies '/usr/include/opencv' as an include dir,which is not found.  It does neither exist as an absolute directory nor in'${{prefix}}//usr/include/opencv'.  Check the issue tracker'http://github.com/anybotics/grid_map/issues' and consider creating aticket if the problem has not been reported yet.
Call Stack (most recent call first):/opt/ros/melodic/share/grid_map_ros/cmake/grid_map_rosConfig.cmake:197 (find_package)/opt/ros/melodic/share/catkin/cmake/catkinConfig.cmake:76 (find_package)CMakeLists.txt:21 (find_package)

cv_bridge

CMake Error at /opt/ros/melodic/share/cv_bridge/cmake/cv_bridgeConfig.cmake:113 (message):Project 'cv_bridge' specifies '/usr/include/opencv' as an include dir,which is not found.  It does neither exist as an absolute directory nor in'${{prefix}}//usr/include/opencv'.  Check the issue tracker'https://github.com/ros-perception/vision_opencv/issues' and considercreating a ticket if the problem has not been reported yet.
Call Stack (most recent call first):/opt/ros/melodic/share/grid_map_cv/cmake/grid_map_cvConfig.cmake:199 (find_package)/opt/ros/melodic/share/grid_map_ros/cmake/grid_map_rosConfig.cmake:197 (find_package)/opt/ros/melodic/share/catkin/cmake/catkinConfig.cmake:76 (find_package)CMakeLists.txt:21 (find_package)

voronoi(维诺图)

CMake Error at /home/bit/planing_and_control_ws/devel/share/voronoi/cmake/voronoiConfig.cmake:113 (message):Project 'voronoi' specifies '/usr/include/opencv' as an include dir, whichis not found.  It does neither exist as an absolute directory nor in'/home/bit/planing_and_control_ws/src/planning/dependent_package/voronoi//usr/include/opencv'.Report the problem to the maintainer 'lijiangnan <lijiangnan@@todo.todo>'

解决方案1----修改报错的文件

上面两个报错对应修改的文件可以从报错中看出，分别为：

/opt/ros/melodic/share/grid_map_cv/cmake/grid_map_cvConfig.cmake/opt/ros/melodic/share/cv_bridge/cmake/cv_bridgeConfig.cmake

先安装自己需要的opencv版本；

将文件中的“/usr/include/opencv”改为自己安装的opencv的头文件目录（参考解决方案2中提到的目录）即可，

参考之前写的：https://blog.csdn.net/BIT_HXZ/article/details/123664947----是为了找到自带的opencv4，步骤和这里差不多（但这里用的是自己安装的opencv）

解决方案2----制作软连接--推荐

先安装自己需要的opencv版本；

查看默认opencv头文件目录，进入/usr/include。文件夹内查找opencv，发现opencv只有40B，索性直接删除。

sudo rm  opencv

制作软连接参考1

当cmake编译时设置安装目录为/usr/local ，cmake指令部分参数参考如下：

CMAKE_INSTALL_PREFIX=/usr/local

opencv头文件目录为/usr/local/include/opencv

sudo ln -s /usr/local/include/opencv /usr/include/opencv

制作软连接参考2

当安装opencv时，只执行make，没哟执行sudo make install，此时头文件目录在自己的opencv 编译目录内，参考：

/home/meng/lib/opencv-3.2.0/build/include

此时执行：

sudo ln -s /home/bit/lib/opencv-3.2.0/build/include /usr/include/opencv

参考链接：

Xavier卸载opencv及安装opencv3.x

Jetson Xavier NX安装opencv3.x以及踩过的坑_gz7seven的博客-CSDN博客