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raulmur / ORB_SLAM2

Real-Time SLAM for Monocular, Stereo and RGB-D Cameras, with Loop Detection and Relocalization Capabilities
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Error occur when building ROS Example #73

Open zsy372901 opened 8 years ago

zsy372901 commented 8 years ago

Hi, I have already build the thirdparty libraries and orb slam. I am trying follow section 7 to build the ROS Example. But when I execute command "make -j", I get the error: [ 0%] Built target rospack_genmsg_libexe [ 0%] Built target rosbuild_precompile [ 50%] Building CXX object CMakeFiles/Mono.dir/src/ros_mono.cc.o In file included from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../Thirdparty/g2o/g2o/types/../core/optimizable_graph.h:41:0, from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../Thirdparty/g2o/g2o/types/../core/base_vertex.h:30, from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../Thirdparty/g2o/g2o/types/types_seven_dof_expmap.h:34, from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../include/LoopClosing.h:34, from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../include/LocalMapping.h:26, from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../include/Tracking.h:31, from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../include/System.h:29, from /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/src/ros_mono.cc:32: /home/pkulab/ORB_SLAM2/Examples/ROS/ORB_SLAM2/../../../Thirdparty/g2o/g2o/types/../core/jacobian_workspace.h:30:22: fatal error: Eigen/Core: No such file or directory

include <Eigen/Core>

                  ^

compilation terminated. make[2]: * [CMakeFiles/Mono.dir/src/ros_mono.cc.o] Error 1 make[1]: * [CMakeFiles/Mono.dir/all] Error 2 make: *\ [all] Error 2 I do not know how to deal with it :(

romanomatthew23 commented 8 years ago

http://askubuntu.com/questions/491067/eigen-installation-seemed-to-work-but-i-still-cant-make-eigen-work

The comment on the first answer says "You also can make a link inside /usr/local/include to /usr/include/eigen3/Eigen so that you don't have to use any extra flag with g++ again. For doing that, just execute the following: sudo ln -s /usr/include/eigen3/Eigen /usr/local/include/Eigen" And it worked for me!

xiesiyuan commented 7 years ago

Worked for me ,thanks

SubMishMar commented 4 years ago

sudo ln -s /usr/include/eigen3/Eigen /usr/local/include/Eigen

Worked! Much thanks!