[yocto] can bitbake build offline ?

[MOHAMMAD RASIM]

Wow that's a cool trick and it worked for me so ,thank you.

Also after some digging I found a solution that does exactly what I 
described in my previous message(I think), and I'm gonna leave it here 
in case someone face the same issue and find this message:

You can use set BB_SRCREV_POLICY = "cache" the local.conf which will 
prevent the AUTOREV recipes from failing by using the local cache for 
revisions

https://www.yoctoproject.org/docs/2.1/bitbake-user-manual/bitbake-user-manual.html#var-BB_SRCREV_POLICY

But If there is a new commits on the remote repo you probably need to 
disable this and rebuild to let bitbake fetch the latest revision and 
you can re enable it afterwards.


Regards


On 07/26/2018 01:40 PM, Paul Eggleton wrote:
> On Thursday, 26 July 2018 12:09:46 PM CEST MOHAMMAD RASIM wrote:
>> Well, actually I used the find command in that wiki page to find the
>> recipe that uses tag name to chose github revision and it found only one
>> recipe
>>
>>   >meta-openembedded/meta-initramfs/recipes-devtools/mtd/ubi-utils-
>>   >klibc_1.5.1.bb
> Hmm, right, it seems like you're using a previous branch - this got fixed
> in a later update of that recipe.
>
>> I masked this recipe in the local.conf file and bitbake failed at
>> parsing other recipes, looking at those recipes I saw that they don't
>> use tag names but they use
>>
>>   >SRCREV = "${AUTOREV}"
>>
>> which is logical since bitbake has to issue ls-remote to know what is
>> the latest revision on the remote git repo (maybe the wiki page needs
>> update to point this ?)
>>
>> Now I can't remove this AUTOREV in these recipes since I need bitbake to
>> fetch the latest updates ( I push updates regularly on that repo and I
>> don't want to update the recipe file each time to add the latest revision)
>>
>> So, here comes the hard part, Is it possible to tell bitbake to issue
>> ls-remote if there is network and to use the latest fetched revision in
>> the sources directory if the network is disabled ? that way I can use
>> ${AUTOREV} in my recipes and bitbake will build from the local repo in
>> the sources directory unless there is network to update the local repo,
>> probably there is no such thing :) .
> So there isn't a mechanism to do exactly that, no, however you can sort of
> achieve the same thing if you set up a .inc file that sets the SRCREV values
> for each recipe and sets BB_NO_NETWORK at the same time (though the
> latter could still be separate). e.g. let's call it no_network.inc:
>
> BB_NO_NETWORK = "1"
> SRCREV_pn-abc = "b4c2bd84ee6f699e348d602a82d2d0963384cdea"
> SRCREV_pn-xyz = "e3b30def2cd1c9ede7630489c3949a45b6eba6ee"
> ..
>
> Then to build offline you would just add the following to your config:
>
> require no_network.inc
>
> FYI you can enable buildhistory and use the buildhistory-collect-srcrevs
> script to generate all those SRCREV lines so you don't have to do that
> by hand:
>
> https://www.yoctoproject.org/docs/current/dev-manual/dev-manual.html#maintaining-build-output-quality
>
> Cheers,
> Paul
>