[oe] Correct versioning of unversioned source in git

[Koen Kooi]

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

> 
> Cheers,
> Paul
> 
> -- 
> 
> Paul Eggleton
> Intel Open Source Technology Centre
>