Re: [ptxdist] Forcing kernel options from userspace package

[Michael Olbrich <m.olbrich@pengutronix.de>]

Hi,

On Tue, Jun 06, 2017 at 07:06:47PM +0000, christoph@ruediger.engineering wrote:
> is there a way to force a specific kernel option by selecting a userland package?
> 
> The concrete case:
> I’m working on a project that uses the SCTP protocol for which I’ve created a
> libsctp package for the userland support library of SCTP. The libsctp package
> is forced by my application via the corresponding “select LIBSCTP” in
> rules/my_app.in. Now I’m looking for a way to have libsctp force the kernel’s
> config flag CONFIG_IP_SCTP to be set. Does ptxdist provide any such mechanism
> or are the userland’s KConfig and the kernel’s KConfig totally separated?

That's not possible and unlikely to change. That would mean calling kconfig
for the kernel in 'ptxdist menuconfig' and that's not possible. The kernel
source code may not be available at that point.
I suggest a validation script that checks, that the two configs fit
together. Parsing ptxconfig is quite simple.

Michael

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