Originally Posted by 5883

How to modify linux kernel config based on existing .config

Originally Posted by 5883

so i started "make menuconfig",
then "load alternate config file", yes it's using existing .config,
i do nothing but just exit the menuconfig and save the changes,
the new .config is different from .config.old,

how come ? i didn't make any change ?

Originally Posted by evo2

HI,

copy your old config file to .config in the kernel source root directory.
Eg.
If that config file is for an older kernel version you can then run "make oldconfig" and you will be prompted with questions only related to newly added kernel features. Finally you can run "make menuconfig" if you want to make any other changes.


Sorry, I've never used this feature of menuconfig so I don't know the details of what it is actually doing. I suggest trying the method I describe above - I've had great success with it in the past.

Evo2.