How do you non-interactively turn on features in a Linux kernel .config file?

Question

I have a situation where our software needs to work with several different Linux kernel distributions / kernel trees. (including Android forks)

In trying to automate

Answer 1

The kernel has a tool (./scripts/config) to change specific options on .config. Here is an example:

./scripts/config --set-val CONFIG_OPTION y

Although, it doesn't check the validity of the .config file.