Compilation error due to the implementation of a missing virtual function

[Bzz2745]

Here is part of build error log :

In file included from /home/user/Project/G3Reg/src/back_end/ransac/ransac.cpp:10:
/home/user/Project/G3Reg/include/utils/opt_utils.h: In member function ‘virtual gtsam::NonlinearFactor::shared_ptr gtsam::Point2PointFactor::clone() const’:
/home/user/Project/G3Reg/include/utils/opt_utils.h:52:79: error: invalid new-expression of abstract class type ‘gtsam::Point2PointFactor’
52 | gtsam::NonlinearFactor::shared_ptr(new Point2PointFactor(*this)));
| ^
/home/user/Project/G3Reg/include/utils/opt_utils.h:29:11: note: because the following virtual functions are pure within ‘gtsam::Point2PointFactor’:
29 | class Point2PointFactor : public NoiseModelFactor1
| ^~~~~~~~~~~~~~~~~
In file included from /home/user/Project/G3Reg/include/utils/opt_utils.h:11:
/usr/local/include/gtsam/nonlinear/NonlinearFactor.h:639:18: note: ‘gtsam::Vector gtsam::NoiseModelFactorN::evaluateError(const ValueTypes& ..., OptionalMatrixTypeT...) const [with ValueTypes = {gtsam::Pose3}; gtsam::Vector = Eigen::Matrix<double, -1, 1>]’
639 | virtual Vector evaluateError(const ValueTypes&... x,

What should I do to solve this ?

[qiaozhijian]

What's your GTSAM version?

[qiaozhijian]

Did you use the version that I recommanded in README?

[Bzz2745]

What's your GTSAM version?

I used the master branch of GTSAM , igraph 0.9.9

[qiaozhijian]

What's your GTSAM version?

I used the master branch of GTSAM , igraph 0.9.9

Try GTSAM-v4.2 please

[Bzz2745]

What's your GTSAM version?

I used the master branch of GTSAM , igraph 0.9.9

Try GTSAM-v4.2 please

Do you mean I should use the source.zip of version 4.2 in release ?

[qiaozhijian]

Reinstall GTSAM following this link https://github.com/borglab/gtsam/tree/4f66a491ffc83cf092d0d818b11dc35135521612