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H A Dsetlocalversiondiff f03b283f081f538ec71b9e87cb8411bb62e2abc9 Fri Sep 12 21:26:24 CEST 2008 Trent Piepho <tpiepho@freescale.com> kbuild: tag with git revision when git describe is missing

setlocalversion used to use an abbreviated git commit sha1 to generate the
tag. This was changed in commit d882421f4e08ddf0a94245cdbe516db260aa6f41
"kbuild: change CONFIG_LOCALVERSION_AUTO to use a git-describe-ish format"
to use git describe to come up with a tag. Which is nice, but git describe
sometimes can't describe the revision.
Commit 56b2f0706d82535fd8d85503f2dcc0be40c8e55d ("setlocalversion: do not
describe if there is nothing to describe") addressed this, but there is still
no tag generated.

So, generate a plain abbreviated sha1 tag like setlocalversion used to when
git describe comes up short.

Signed-off-by: Trent Piepho <tpiepho@freescale.com>
CC: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff 56b2f0706d82535fd8d85503f2dcc0be40c8e55d Wed Jul 02 00:18:08 CEST 2008 Sebastian Siewior <lkml@ml.breakpoint.cc> setlocalversion: do not describe if there is nothing to describe

Jan Engelhardt wrote:
> Just a note that when you run git-describe, you should probably quiten it.
>
> fatal: cannot describe 'bd7364a0fd5a4a2878fe4a224be1b142a4e6698e'
>
> This happens when tags are not present, which can happen if Linus's tree
> is sent upwards again, IOW:
>
> machine1$ git-clone torvalds/linux-2.6.git
> machine1$ git push elsewhere master
>
> machine2$ git-clone elsewhere:/linux
> machine2$ git-describe HEAD
> fatal: cannot describe that

Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Acked-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>