Build rom for android device without support from manufacturer

Saturday, July 12, 2014

I have a Galaxy Nexus phone and as you know that Google does not support it anymore. I want to make rom for it but I don't know where to start. I know there is cyanogenmod but I want to make it on my own. For know I think I have to take the android source, take the driver, make them work together. But I don't know how to do that, how to take or how to write the driver? how to add it to android?... Please give me a start point or some keywords to research.