I'm trying to build AOSP for the Galaxy S3 (GT-i9300) and I cannot seem to get this to work. I have had success with my Nexus (Maguro) by following the AOSP building guides, so I know that my environment is at least stable enough for a build. I know that I need to add the device files, kernel, and vendor files, but I can only find them through CyanogenMod. I want to build a pure Android ROM and not have any of the additions from CM. I also know that pre-built ROMs exist, but I want to be able to build my own so that I can add my own stuff to it (again, I don't want the additions from some other developer, yet). Does anyone know of any good resources that will help me get a pure Android ROM on my i9300? Thanks.