From Tizen Wiki
Building Tizen from Source Code
There are many ways to build Tizen from source code:
- Build using the GBS build tool - This is the most common way for people to build Tizen projects fully from source or specific components. To get started with building from source, please start here.
- Build using the automated-build system - This is a new feature that will allow you to build Tizen completely using a web interface. You can access that here