[oe] Correct versioning of unversioned source in git

[Paul Eggleton]

On Thursday 13 March 2014 12:17:40 Koen Kooi wrote:
> Op 13 mrt. 2014, om 12:14 heeft Paul Eggleton 
<paul.eggleton at linux.intel.com> het volgende geschreven:
> > On Thursday 13 March 2014 12:09:21 Koen Kooi wrote:
> >> Op 13 mrt. 2014, om 11:45 heeft Paul Eggleton
> > 
> > <paul.eggleton at linux.intel.com> het volgende geschreven:
> >>> On Thursday 13 March 2014 10:59:38 Koen Kooi wrote:
> >>>> Tomas Novotny schreef op 13-03-14 10:08:
> >>>>> there is a recipe sunxi-board-fex in meta-sunxi layer. That recipe
> >>>>> fetches sources from unversioned git which contains definitions of
> >>>>> some
> >>>>> boards (in fact it is something like a store). I'm not sure with
> >>>>> correct
> >>>>> versioning in OE. Is that: PV = "1.0+git${SRCPV}" SRCREV =
> >>>>> "<some_gitrev_I_want>" correct? Will be change of SRCREV (only)
> >>>>> catched
> >>>>> by build system (I'm curious how OE handles age of the rev in git)? Or
> >>>>> do
> >>>>> I need to raise PV to 1.1 and so on with every change to SRCREV?
> >>>> 
> >>>> The answer changes if you have more than one buildhost. If you have
> >>>> only
> >>>> one buildhost and don't care about other people rebuilding the exact
> >>>> same versions, 1.0+git${SRCPV} will work.
> >>>> 
> >>>> If you have more than one buildhost and/or care about other people
> >>>> rebuilding the exact same, you'll need to increase PR (or PV) everytime
> >>>> SRCREV changes. That will still cause some discrepancies if someone
> >>>> rebuilds after >1 SRCREV change, but upgrade paths should work when
> >>>> increasing PV (not with PR!).
> >>> 
> >>> Why not with PR?
> >> 
> >> because SRCPV in in PV, not PR
> > 
> > Right, but if you're using the PR server, that also stores the
> > incrementing
> > number at the start of SRCPV; PR may also increment when SRCREV changes as
> > well (not sure on the latter). The PR server ought to be used if you care
> > about this sort of thing.
> 
> Only if your PR server is publicly available *and* you have network access
> during the build. There is currently no workable way to get versioning info
> to users trying to rebuild something. The closest I've been to a solution
> is to ship prserv-tool exports in git.

If you're saying you want something that doesn't require network access, gets 
the right answer for all users *and* automatically increments when something 
changes - those are conflicting requirements...

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre