[Xenomai] packaging question: no kernel dependencies?

[Xenomai] packaging question: no kernel dependencies?

[Michael Haberler]

I'm working to debian-package linuxcnc with Xenomai userland RT threads.

AFAICT building requires only the userland support package, but for instance not the kernel headers. The way I read http://www.xenomai.org/documentation/xenomai-2.6/html/README.INSTALL/#_feature_conflict_resolution it is safe to rely on runtime detection of feature compatibility.

goof prevention question: Is it safe to wrap such a package without explicit references to some kernel version?

- Michael 

Re: [Xenomai] packaging question: no kernel dependencies?

[Gilles Chanteperdrix]

On 02/16/2013 08:22 AM, Michael Haberler wrote:

> I'm working to debian-package linuxcnc with Xenomai userland RT
> threads.
> 
> AFAICT building requires only the userland support package, but for
> instance not the kernel headers. The way I read
> http://www.xenomai.org/documentation/xenomai-2.6/html/README.INSTALL/#_feature_conflict_resolution
> it is safe to rely on runtime detection of feature compatibility.
> 
> goof prevention question: Is it safe to wrap such a package without
> explicit references to some kernel version?


Yes, the only thing which defines the kernel/user ABI, is the branch you
are using, so, for instance, you can keep a kernel patched with 2.6.1,
and upgrade user-space to 2.6.2.1. And you will get a runtime error if
you try running a kernel patched with 2.5.6 with a 2.6.2.1 user-space.

-- 
                                                                Gilles.