Select sources for FreeBSD

Hello, under the install, you can select sources when selecting package set to install, and when I select custom, what sources do I need for the nvidia-driver to compile on the system?
You don't need to select any sources as far as I know. The driver should be located under /usr/ports/x11/nvidia-driver.

There is an article located here that could be useful.
Roberth said:
Well it needs the kernel's source to compile against it, same with OSS.

Correct, you also need misc/compat5x and if chosen a linux_base.