CyanogenMod Compiler project lets you make your own ROM

A command line based project released by lithid-cm has the ability to go any user the power to create their own CM Roms. Called the CyanogenMod Compiler (CMC) it currently is in the test phase and allows only basic tweaks to a CM ROM including the ability to eliminate languages, wallpapers and tweak themes. The general idea is to be able to develop your own custom ROM without the need for dependence on anyone.

[xda-developers]