how to build source by myself

[Chao（data） Li]

hello:
        I have a question about how can i extend my functions according to my 
need ?  Because when i finished the extension code i don’t know if i can build 
another package to run. should I just follow the scripts on GitHub?  
https://github.com/apache/kylin/tree/master/build/script 
<https://github.com/apache/kylin/tree/master/build/script>