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

[M. Warner Losh]

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.

Warner