How to build my own Ext JS 3.3.1?

I want to know how to build my own Ext JS with only the js files 开发者_开发百科I need, or if there is a feature in Ext JS where I can just load the individual components that I need. Ext JS is a lot of the size of my application, and it is not working without including ext-all.js.

Sollution:

Use a php script to serve compressed css or js scripts like in the example in the link below:

http://www.thewebdevelopmentblog.com/2008/10/tip-speed-up-your-websites-using-gzip-and-merging-files/