Less than twelve hours ago, we brought you news that source code for Android 4.1 Jelly Bean had been released to the Android Open Source Project. As one would expect, this means that we should expect a deluge of source-built Jelly Bean development for various devices in the near future.
In order to help beginner builders get started creating tasty treats from source, XDA Recognized Developer dastin1015 has outlined the steps required in getting started making your own source-built port. The Ubuntu-based guide is not meant to be a complete A-to-Z guide, but it will get you on the right track to make things work.
The guide covers setting up the build environment, connecting to and downloading from the repository, adding a device, and building. As described in the thread:
To compile Jellybean on Ubuntu I’m going to first give you steps to set up your computer to get this thing rolling. Also note that this appears to be a development preview source code.
This will NOT make a fully functional ROM, but will give you a place to start. Also I CANNOT fix every error you run into.
Note: The source download is approximately 6GB in size. You will need 25GB free to complete a single build, and up to 80GB (or more) for a full set of builds.
To get started, head over to the original thread. Your source-built dreams are now possible._________