[bitbake-devel] git fetcher: does not execute git fetch --tags or similar when HEAD has not changed

[Matthias Schoepfer]

Hi!

As pointed by Denys Dmytriyenko, I repost here from the yocto project 
mailing list.

We have noticed the following issue: We keep the versions of out 
software by means of tags on the git repositories, i.e. during the 
build, somethings like git describe --tags gets called. In yocto, our 
recipe of SomeLibrary might look then similar to this:

SRC_URI = "git://our.private.gitserver.org/git/SomeLibrary.git;tags=v${PV}"

When we build the image, and *then* apply a tag to HEAD, that was 
already built before, it seems like the tags are not fetched (my guess 
is git fetcher sees that origins HEAD and local HEAD have the same hash 
and is fine with it. I believe this is also true for SRCREV instead of 
tags=).

The error is, that while the correct version is built, it will report 
itself with a wrong version.

Is this a bug? Would you welcome some patch that does git fetch --tags 
in any case?!

Regards,

   Matthias