[yocto] AUTOREV problems

[Jerrod Peach]

Seth,

Like Tomas said, it's hard to say for sure without seeing the recipe in
question, but I know one way this could happen: AUTOREV, by itself, does
not permute your hash.  It ends up just resolving to the string "AUTOINC"
every time.  You *also *need the SRCPV variable somewhere in your recipe,
as it will contain the real revision the was retrieved from version
control.  I believe the normal way to use SRCPV is as follows:

PV = "<vcs>-<version>-${SRCPV}"

For example:

PV = "svn-1.0.0-${SRCPV}"

If you aren't using SRCPV, your hash won't permute, and you won't rebuild.

The reason for this behavior isn't obvious off-hand, but I suspect it's so
you can set AUTOREV for a specific package in local.conf and not force half
the world to get reparsed every time a revision updates.

Kind regards,

Jerrod

On Mon, Oct 22, 2012 at 7:56 AM, Seth Bollinger <seth.boll at gmail.com> wrote:

> Hello All,
>
> I've been having some serious problems trying to get my image to rebuild
> recipes when their upstream repositories have changed.  I have SRCREV =
> ${AUTOREV} in my recipe and in bitbake -e I see these 2 lines:
> # SRCREV=${AUTOREV}
> SRCREV="AUTOINC"
>
> I've found BB_SRCREV_POLICY and I've set that explicitly to clear, even
> though that seems to be the default.  Auto didn't seem to work, even though
> it looks like it should from the code.
>
> When I try rebuilding my recipe, it seems to find that everything is cached
> and doesn't even attempt the fetch, even though I know the repository has
> changed (that's the reason I want to rebuild :)).  I've tried whacking
> tmp/cache/*, but that didn't help.  I tried whacking the stamp for
> do_fetch.  That didn't help unless I explicitly built using the "fetch"
> command, then it at least appeared to fetch.  However, when I tried to
> build the image after that, it didn't try to rebuild the recipe that had
> just fetched.
>
> The only way I could get it to rebuild was to cleansstate on the recipe and
> then rebuild the image.  I assume this isn't the way it should be working.
>
> 1.  What is the expected operation of bitbake builds for recipes using
> autorev?
> 2.  How can I get my autorev recipes to rebuild when their repositories
> change?
> 3.  If this is working for everyone else, how can I find what I have
> screwed up?  :)
>
> Thanks,
>
> Seth
>
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