[libvirt] [PATCH] build: submodule machinery now works also when no tag is reachable

[Jim Meyering]

Daniel Veillard wrote:

> On Wed, Jul 15, 2009 at 09:59:33AM +0200, Jim Meyering wrote:
>> Mike Burns wrote:
>> > I hit an issue with libvirt autobuild.  I am running on an F11 machine and the build stage of libvirt--devel is failing.
>> ...
>> > I talked to danpb and he pointed out that there is a difference between .git-module-status and git submodule status:
>> >
>> > <danpb1> $ cat .git-module-status
>> > <danpb1> -b653eda3ac4864de205419d9f41eec267cb89eeb .gnulib
>> > <danpb1>  git submodule status
>> > <danpb1>  b653eda3ac4864de205419d9f41eec267cb89eeb .gnulib (v0.0-2286-gb653eda)
>>
>> Hi Mike,
>>
>> Thanks for the report, and thanks to Dan for looking into it.
>> Here's a patch:
>
>   Hum, isn't the patch from Paolo Bonzini earlier a cleaner way to
> avoid the - being inserted in the first place ?

Both patches work for gnulib.  Mine is slightly more general in that
it would work also for a submodule with no signed tag, and
with an SHA1 for which no tag is an ancestor.