1. /usr/local/arm/opencv-3.4.0/opencv_contrib-3.4.0/modules/xfeatures2d/include/opencv2/xfeatures2d.hpp:42:10:

2. fatal error: /opencv2/xfeatures2d.hpp: No such file or directory

3. #include "/opencv2/xfeatures2d.hpp"

4. ^~~~~~~~~~~~~~~~~~~~~~~~~~

5. compilation terminated.

根据给的路径找到xfeature2d.hpp的文件并打开，找到第42行如下：

1. 40 #ifndef __OPENCV_XFEATURES2D_HPP__

2. 41 #define __OPENCV_XFEATURES2D_HPP__

3.  

4. 42 #include"/opencv2/xfeatures2d.hpp"

改为绝对路径

1. 40 #ifndef __OPENCV_XFEATURES2D_HPP__

2. 41 #define __OPENCV_XFEATURES2D_HPP__

3.  

4. 42#include"/usr/local/arm/opencv3.4.0/opencv_contrib3.4.0/modules/xfeatures2d/include/opencv2/xfeatures2d.hpp"

所有这种找不到的都这么解决。

对于boostdesc_bgm.i的问题直接下载到拟需要的文件夹。

opencv_contrib/modules/xfeatures2d/src/

百度云盘链接

1. 链接：https://pan.baidu.com/s/1pv2P8jn14im9IUDGorIuFg

2. 提取码：2jnr