[ipt-netflow] compiling ipt-netflow statically into kernel (not as module)

[Karel <li...@vc...>]

Hello,

I am using custom compiled kernel without modules (mostly for security
reasons, but also fro simplicity).

How difficult would it be to compile ipt-netflow statically, instead of
as a module ?

Ideally, I would like to "patch" the kernel source, and then simply
select ipt-netflow option in menuconfig.

Any suggestions would be appreciated.

(For the record, compiling as module works OK on kernel 4.4.)

thanks,
Karel