[yocto] Problem with AUTOINC and ipk

[Tino Breddin]

Hi there,

We are having problems with using AUTOINC together with the ipk package format. I'm not sure whether this issue applies to rpm and deb as well.

Given the following configuration in a recipe:

SRCREV = "AUTOINC"
PV = "git${SRCPV}"
PR = "r0"

The generated package will have a version like this:

git0+e6d1870200802f32e17e334272191397e15aec53-r0

In case the latest Git revision changes, the new package would have the version:

git0+30249a36b39482a98772c881334ee703715a54cc-r0

My understanding is that the first integer before the + is meant to be incremented monotonically to allow the package manager to figure out that a upgrade is available. Where is the state for this integer kept? Obviously if 2 developers build the package independent from each other it would always be 0 initially. But it will stay 0 for a single developer too if the package is cleaned first. At least that is what we are seeing.

I'd appreciate any feedback on how to handle recipes which should follow the Git HEAD.

Cheers,
Tino