BitBake release notes

BitBake release notes

[Andrew Featherstone]

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Hi There,

First apologies in advance if this is the wrong mailing list. If there's a
bitbake-users list, please let me know.

I'm looking for some release notes for BitBake to help understand
compatibility of recipes and when new features were added. The changelog at
https://git.openembedded.org/bitbake/tree/ChangeLog hasn't been touched in
quite a few years, Yocto Project release notes include details of changes
https://wiki.yoctoproject.org/wiki/Releases, but nothing about
compatibility. Are all 1.x releases of BitBake backwards compatible?

Regards,
Andrew

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Re: BitBake release notes

[Alexander Kanavin]

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The short answer is no. Bitbake releases are actually tightly coupled to matching versions of layer metadata, so while you can try to use newer bitbake with older metadata, you are on your own with any issues.

Alex

> On 18 May 2019, at 11.04, Andrew Featherstone <andrew.featherstone@gmail.com> wrote:
> 
> Hi There,
> 
> First apologies in advance if this is the wrong mailing list. If there's a bitbake-users list, please let me know.
> 
> I'm looking for some release notes for BitBake to help understand compatibility of recipes and when new features were added. The changelog at https://git.openembedded.org/bitbake/tree/ChangeLog hasn't been touched in quite a few years, Yocto Project release notes include details of changes https://wiki.yoctoproject.org/wiki/Releases, but nothing about compatibility. Are all 1.x releases of BitBake backwards compatible?
> 
> Regards,
> Andrew
> -- 
> _______________________________________________
> bitbake-devel mailing list
> bitbake-devel@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/bitbake-devel

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Re: BitBake release notes

[Andrew Featherstone]

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Thanks, Alex. Are the Yocto Project release notes the de-facto release
notes? From version 1.16 onwards it seems that releases go up by 2 at a
time in the minor version; why is this? The current version of the BitBake
User Manual [1] offers little insight here.

Andrew

[1]
https://www.yoctoproject.org/docs/current/bitbake-user-manual/bitbake-user-manual.html#obtaining-bitbake

On Sat, 18 May 2019 at 15:42, Alexander Kanavin <alex.kanavin@gmail.com>
wrote:

> The short answer is no. Bitbake releases are actually tightly coupled to
> matching versions of layer metadata, so while you can try to use newer
> bitbake with older metadata, you are on your own with any issues.
>
> Alex
>
> On 18 May 2019, at 11.04, Andrew Featherstone <
> andrew.featherstone@gmail.com> wrote:
>
> Hi There,
>
> First apologies in advance if this is the wrong mailing list. If there's a
> bitbake-users list, please let me know.
>
> I'm looking for some release notes for BitBake to help understand
> compatibility of recipes and when new features were added. The changelog at
> https://git.openembedded.org/bitbake/tree/ChangeLog hasn't been touched
> in quite a few years, Yocto Project release notes include details of
> changes https://wiki.yoctoproject.org/wiki/Releases, but nothing about
> compatibility. Are all 1.x releases of BitBake backwards compatible?
>
> Regards,
> Andrew
>
> --
> _______________________________________________
> bitbake-devel mailing list
> bitbake-devel@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/bitbake-devel
>
>

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Re: BitBake release notes

[Richard Purdie]

On Sun, 2019-05-19 at 09:41 +0100, Andrew Featherstone wrote:
> Thanks, Alex. Are the Yocto Project release notes the de-facto
> release notes? From version 1.16 onwards it seems that releases go up
> by 2 at a time in the minor version; why is this? The current version
> of the BitBake User Manual [1] offers little insight here.

Odd versions are development versions (in the master branch), even ones
are stable releases.

Bitbake does keep a fairly stable API and should be backwards
compatible but there aren't many people testing that so its possible
you may find issues...

Cheers,

Richard