make 编译报错，用的是提供的opencv-3.4.2

[Aruen24]

[ 50%] Building CXX object CMakeFiles/YoloV5sEngine.dir/yolov5s_infer.cc.o
In file included from /usr/local/opencv-3.4.2/include/opencv2/calib3d.hpp:48:0,
from /usr/local/opencv-3.4.2/include/opencv2/opencv.hpp:56,
from /home/wangyuanwen/tensorrt_test/yolov5_tensorrt_int8/yolov5s_infer.cc:6:
/usr/local/opencv-3.4.2/include/opencv2/features2d.hpp:50:10: fatal error: opencv2/flann/miniflann.hpp: No such file or directory
#include "opencv2/flann/miniflann.hpp"
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
CMakeFiles/YoloV5sEngine.dir/build.make:62: recipe for target 'CMakeFiles/YoloV5sEngine.dir/yolov5s_infer.cc.o' failed
make[2]: *** [CMakeFiles/YoloV5sEngine.dir/yolov5s_infer.cc.o] Error 1
CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/YoloV5sEngine.dir/all' failed
make[1]: *** [CMakeFiles/YoloV5sEngine.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

[Wulingtian]

你的OpenCV放到/usr/local目录下吗？

[Wulingtian]

[ 50%] Building CXX object CMakeFiles/YoloV5sEngine.dir/yolov5s_infer.cc.o
In file included from /usr/local/opencv-3.4.2/include/opencv2/calib3d.hpp:48:0,
from /usr/local/opencv-3.4.2/include/opencv2/opencv.hpp:56,
from /home/wangyuanwen/tensorrt_test/yolov5_tensorrt_int8/yolov5s_infer.cc:6:
/usr/local/opencv-3.4.2/include/opencv2/features2d.hpp:50:10: fatal error: opencv2/flann/miniflann.hpp: No such file or directory
#include "opencv2/flann/miniflann.hpp"
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
CMakeFiles/YoloV5sEngine.dir/build.make:62: recipe for target 'CMakeFiles/YoloV5sEngine.dir/yolov5s_infer.cc.o' failed
make[2]: *** [CMakeFiles/YoloV5sEngine.dir/yolov5s_infer.cc.o] Error 1
CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/YoloV5sEngine.dir/all' failed
make[1]: *** [CMakeFiles/YoloV5sEngine.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

你把opencv放到你的用户目录下试试

[Wulingtian]

这是我的库截图，你看看你的库有没有链接上

[Aruen24]

原来系统是ubuntu16.04 不支持GLIBC_2.27，系统换成18.04可以正常编译了！

[juzigithub]

@wang911205我遇到了跟你一样的问题，请问还有其他解决方案吗？