Error

[warmtree96]

Thanks a lot,

When I enter make -j4
it became
`-- Configuring done
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
G2O_CORE_LIBRARY_DEBUG
linked by target "PlaneSLAM" in directory /home/user/github/PlaneSLAM-master
G2O_STUFF_LIBRARY_DEBUG
linked by target "PlaneSLAM" in directory /home/user/github/PlaneSLAM-master
G2O_TYPES_SBA_DEBUG
linked by target "PlaneSLAM" in directory /home/user/github/PlaneSLAM-master
G2O_TYPES_SLAM3D_DEBUG
linked by target "PlaneSLAM" in directory /home/user/github/PlaneSLAM-master

-- Generating done
CMake Generate step failed. Build files cannot be regenerated correctly.

[Finished]`
Does it mean I need to change Findg2o.cmake file in the cmake modules?

And do we have some methods to check how many versions of G2O exist in our computer?