How to Build Arduino Project with Eclipse

I download the zip file on git and extract it.
Then I open the eclipse,choose the arduino directory and import arduino-core、processing and processing-head
Then I run it.
A problem occurred : 
The project was not built since its build path is incomplete. Cannot find the class file for com.github.zafarkhaja.semver.Version. Fix the build path then try building this project
How can I fix this problem
