catkin_make error

[130926C]

Hi, when I compile this package using catkin_make, it put a series error like this, even after compile dependence in ReadMe file:

ultiray_shape.h:43:23: error: ‘math’ does not name a type; did you mean ‘tanh’? void AddRay(const math::Vector3 &_start, const math::Vector3 &_end); ^~~~ tanh

OS: Ubuntu 18.04
Version: melodic

What should i do to deal that ?

think you for your time.

[zhoushiguang7]

请问你解决了吗 我也遇到这个问题了