Yes, it uses JSBuilder to build cherryonext.js and cherryonext-debug.js.
But if you want only produce a file that can be used in your development environment, waiting for a new cherry release (probably sometimes during this week, but this is not a promise), just use a script as the foillowing:
As you see it will produce a cherry-unix.js file that you can use insted of cherryonext.js (be aware: comments are not stripped away, the file is not miniefied and so on...)
rm -rf cherry-unix.js
for file in `cat cherryonext.jsb | grep include | cut -d "=" -f 2 | cut -d " " -f 1 | tr \\\\\\\\ /`
echo $file | xargs cat >> cherry-unix.js