* Setting a custom hostname using git revisions?
@ 2018-04-04 15:48 Giordon Stark
2018-04-04 16:13 ` Stephano Cetola
0 siblings, 1 reply; 3+ messages in thread
From: Giordon Stark @ 2018-04-04 15:48 UTC (permalink / raw)
To: N:
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Hi all,
I looked at the bitbake manual, but if I have a custom layer that's checked
out at a specific revision, how can I access the variable containing the
revision to embed it into the hostname variable?
I would want to append the hostname variable in:
recipes-core/base-files/base-files_%.bbappend which is currently set to
"${MACHINE}".
Instead, I would like something along the lines of
"${MACHINE}-${LAYER_REV}".
Thanks,
Giordon
--
Giordon Stark
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Setting a custom hostname using git revisions?
2018-04-04 15:48 Setting a custom hostname using git revisions? Giordon Stark
@ 2018-04-04 16:13 ` Stephano Cetola
2018-04-04 21:58 ` Stephano Cetola
0 siblings, 1 reply; 3+ messages in thread
From: Stephano Cetola @ 2018-04-04 16:13 UTC (permalink / raw)
To: Giordon Stark; +Cc: yocto
On 4/4/18 8:48 AM, Giordon Stark wrote:
> Hi all,
>
> I looked at the bitbake manual, but if I have a custom layer that's
> checked out at a specific revision, how can I access the variable
> containing the revision to embed it into the hostname variable?
>
> I would want to append the hostname variable in:
> recipes-core/base-files/base-files_%.bbappend which is currently set to
> "${MACHINE}".
>
> Instead, I would like something along the lines of
> "${MACHINE}-${LAYER_REV}".
>
> Thanks,
>
> Giordon
> --
> Giordon Stark
>
>
This is pretty tricky. I'd use a python function inside your recipe.
You can get the layers like this:
layers = (bb.data.getVar("BBLAYERS", d, 1) or "").split()
Then if you have a look at the metadata_scm.bbclass, you can use some of
the functions in there:
base_get_metadata_git_branch
base_get_metadata_git_revision
Add some logic and you should be able to pull the revision information
you care about out of that data.
Cheers,
Stephano
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Setting a custom hostname using git revisions?
2018-04-04 16:13 ` Stephano Cetola
@ 2018-04-04 21:58 ` Stephano Cetola
0 siblings, 0 replies; 3+ messages in thread
From: Stephano Cetola @ 2018-04-04 21:58 UTC (permalink / raw)
To: yocto
On 4/4/18 9:13 AM, Stephano Cetola wrote:
> On 4/4/18 8:48 AM, Giordon Stark wrote:
>> Hi all,
>>
>> I looked at the bitbake manual, but if I have a custom layer that's
>> checked out at a specific revision, how can I access the variable
>> containing the revision to embed it into the hostname variable?
>>
>> I would want to append the hostname variable in:
>> recipes-core/base-files/base-files_%.bbappend which is currently set to
>> "${MACHINE}".
>>
>> Instead, I would like something along the lines of
>> "${MACHINE}-${LAYER_REV}".
>>
>> Thanks,
>>
>> Giordon
>> --
>> Giordon Stark
>>
>>
>
> This is pretty tricky. I'd use a python function inside your recipe.
>
> You can get the layers like this:
>
> layers = (bb.data.getVar("BBLAYERS", d, 1) or "").split()
>
> Then if you have a look at the metadata_scm.bbclass, you can use some of
> the functions in there:
>
> base_get_metadata_git_branch
> base_get_metadata_git_revision
>
> Add some logic and you should be able to pull the revision information
> you care about out of that data.
>
> Cheers,
> Stephano
>
>
A rather elaborate example of how to get the revision number can be seen
here:
https://github.com/openembedded/openembedded-core/blob/master/meta/classes/image-buildinfo.bbclass
--S
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-04-04 15:48 Setting a custom hostname using git revisions? Giordon Stark
2018-04-04 16:13 ` Stephano Cetola
2018-04-04 21:58 ` Stephano Cetola
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