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From: Alexander Kanavin <alexander.kanavin@linux.intel.com>
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Date: Wed, 24 Feb 2016 18:02:08 +0200
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Subject: Re: : git tag and PV variable
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On 02/24/2016 05:35 PM, Khem Raj wrote:
>
>     I have this command in my qmake pro files:____
>
>     VERSION = $$system(git describe --abbrev=0 --tags)____
>
>     __ __
>
>     I would like to have the package manager follow the tag versioning.____
>
>     __ __
>
>     Which means I would like to have something like:____
>
>     PV = "git describe --abbrev=0 --tags"____
>
>     SRC_URI = "${STUDIEL_GIT}/core.git;protocol=file;tag=${PV}"____
>
>     __ __
>
>     It does not work for sure. What is the correct way to do this ?
>
>
> ​SRC_URI is required by fetcher and there is nothing to git describe
> before it is fetched.​
> so thats your problem.

It's possible however to write an external script that updates the PV 
version in the recipe, but it needs to be run outside of bitbake.

Alex