cvs commit: src/usr.sbin/config configvers.h

[Ruslan Ermilov]

On Fri, Nov 04, 2005 at 09:15:49AM -0700, M. Warner Losh wrote:
> In message: <20051104120642.GL29387 at submonkey.net>
>             Ceri Davies <ceri at submonkey.net> writes:
> : On Fri, Nov 04, 2005 at 12:56:01PM +0200, Ruslan Ermilov wrote:
> : > On Fri, Nov 04, 2005 at 09:34:36AM +0000, Ceri Davies wrote:
> : > > On Fri, Nov 04, 2005 at 09:18:58AM +0200, Ruslan Ermilov wrote:
> : > > > On Fri, Nov 04, 2005 at 04:16:44AM +0000, Warner Losh wrote:
> : > > > > imp         2005-11-04 04:16:44 UTC
> : > > > > 
> : > > > >   FreeBSD src repository
> : > > > > 
> : > > > >   Modified files:
> : > > > >     usr.sbin/config      configvers.h 
> : > > > >   Log:
> : > > > >   since nocpu isn't used in the kernel config base, we don't need to
> : > > > >   bump the version.  Peter Wemm, John Baldwin and I hammered this out
> : > > > >   after the last time I needlessly incremented the version.
> : > > > >   
> : > > > >   Revision  Changes    Path
> : > > > >   1.38      +1 -1      src/usr.sbin/config/configvers.h
> : > > > > 
> : > > > Our users wanted to *use* the "nocpu" directive in their configs
> : > > > that are based on GENERIC (GENERIC is included), hence I bumped
> : > > > config(8).  Otherwise, one day some would scream that "nocpu"
> : > > > doesn't work for them, because they're using the older version
> : > > > of config(8).
> 
> I will agree that bumping the config version will force users to
> install a new config.  At the same time, a new config cannot be used
> for old kernels, like the ones in 6.0.  Since this is the only
> incompatibility between 6.0 and current, it seemed a little
> gratuitous.
> 
> There's no documentation about what features are in what versions of
> config.  If you don't bump the version, then we can MFC these changes
> and users can use config in 6.x.  A nit is that there's no nocpu in
> config.5.
> 
> My position is that the inconvenience of having multiple versions of
> config is worse than the minor confusion when nocpu doesn't work.
> 
> : > > I'd agree that the Makefiles don't need to be bumped, as they don't
> : > > actually require the new config, but config has new functionality and
> : > > the version should probably be bumped in the binary.
> : > > 
> : > You cannot just bump it in one place, the version requirement doesn't
> : > understand >=, only =.
> : 
> : Oh.  Insert obvious next question here. :)
> : What happens to those people who have already installed 600004 then?
> 
> They will need to install a new config if they want to build a new
> kernel.  Maybe it is time to change the versioning so that multiple
> versions will work.
> 
This is all not needed if you're using an official upgrade method:
buildworld/buildkernel, which will take care of updating config(8)
for you.


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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