Remember, most restrictions apply only if you want to distribute the resulting code. In general, if you don't distribute your code (or the open source code you

Remember, most restrictions apply only if you want to distribute the resulting code. In general, if you don't distribute your code (or the open source code you incorporate), there are no restrictions to what you can do. For instance, you're free to modify the Linux kernel for internal use in your company without ever publishing your modifications.