arm architecture support example

[Luca Capra]

Dear,
do you know if there is preferred approach to snap packaging over
multi-architecure?

I mean, is it preferred to have many snap per architecture or one that
handle internally the arch as you did for your grafana?

Thanks
Best,
Luca

2016-01-22 9:49 GMT+01:00 Woodrow Shen <woodrow.shen at canonical.com>:

> The another approach is still using cross compile to build any package
> (with nodejs ?) what you want.
> Then you need to follow snap format to put all necessary files (binary,
> configs, or db) into fake-like rootfs.
> For example, the structure can be as follows:
>
> ├── conf
> │   └── defaults.ini
> ├── magic-bin
> │   ├── arm-linux-gnueabihf
> │   ├── grafana
> │   ├── start-service.sh
> │   └── x86_64-linux-gnu
> ├── meta
> │   ├── grafana.apparmor
> │   ├── grafana.seccomp
> │   ├── icon.png
> │   ├── package.yaml
> │   └── readme.md
> ├── usr
> │   └── share
> └── var
>     └── log
>
> Make sure your package.yaml to contain all the snap information, and use
> `snappy build </path-to-your-top-dir>` to generate a snap.
>
> Here is my snap for reference:
> https://github.com/woodrow-shen/grafana-multi-snap
>
> Have snap fun!
>
> On Fri, Jan 22, 2016 at 4:32 PM, Luca Capra <luca.capra at gmail.com> wrote:
>
>> Ok, got it! I will try this way.
>>
>> Thank you,
>> Luca
>>
>>
>> 2016-01-22 9:22 GMT+01:00 Aiken Qi <aiken.qi at canonical.com>:
>>
>>> Steps
>>> 1. install Snappy Ubuntu Core on RPi 2
>>> https://developer.ubuntu.com/en/snappy/start/raspberry-pi-2/
>>> 2. Install Docker app within your Snappy OS on RPi2
>>> 3. Import docker image from docker hub, I was using this
>>> https://hub.docker.com/r/ioft/armhf-ubuntu/
>>> 4. Run Ubuntu Core as container, and you will have the arm ubuntu for
>>> snappy development.
>>>
>>>
>>> Regards,
>>> Aiken Qi |Director Alliances PRC | Canonical Ltd | Beijing| China | +86
>>> 13683072422
>>>
>>> On Fri, Jan 22, 2016 at 4:15 PM, Luca Capra <luca.capra at gmail.com>
>>> wrote:
>>>
>>>> Thank you Aiken
>>>> I'm not sure I've understood what you suggest, sorry :)
>>>>
>>>> Install ubuntu core on RPi and install docker on it to run an ubuntu
>>>> arm where to run my build?
>>>>
>>>> Best
>>>> Luca
>>>>
>>>> 2016-01-22 2:08 GMT+01:00 Aiken Qi <aiken.qi at canonical.com>:
>>>>
>>>>> Luca,
>>>>>
>>>>> Suggest you use docker on RPi snappy, and use Ubuntu core docker image
>>>>> for armhf. It's quite straight forward for native compile.
>>>>>
>>>>> Regards
>>>>> Aiken Qi
>>>>> 13683072422
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Jan 21, 2016 at 8:41 AM -0800, "Luca Capra" <
>>>>> luca.capra at gmail.com> wrote:
>>>>>
>>>>> Thank you Alexander,
>>>>>> I will try to setup a qemu instance over armv7.. if feasibile.. and
>>>>>> try to build from there.
>>>>>>
>>>>>> Best, Luca
>>>>>>
>>>>>> 2016-01-21 12:19 GMT+01:00 Alexander Sack <asac at canonical.com>:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> cross compilation of nodejs with snapcraft is tricky. If you manually
>>>>>>> build/assemble your stuff you can try the instructions on cross
>>>>>>> compiling you can find on the web, but for snapcraft the best way is
>>>>>>> to go for native building on your pi2...
>>>>>>>
>>>>>>> For snappy 15.04 you can get a developer ubuntu experience by using
>>>>>>> lxd. For snappy 16.04 you can "sudo snappy enable-classic" mode and
>>>>>>> then switch into a convenient ubuntu shell where you can apt-get
>>>>>>> install etc. with "sudo snappy shell classic"
>>>>>>>
>>>>>>> My etherpad-lite snap builds nicely that way. See
>>>>>>> https://github.com/asac/etherpad-lite/tree/snap-support/bin/snappy.
>>>>>>> ..
>>>>>>>
>>>>>>>  - Alexander
>>>>>>>
>>>>>>> On Thu, Jan 21, 2016 at 12:07 PM, Luca Capra <luca.capra at gmail.com>
>>>>>>> wrote:
>>>>>>> > Hello,
>>>>>>> >
>>>>>>> > I've built a service snap out of a nodejs module and would like to
>>>>>>> cross
>>>>>>> > compile it to armv7 for RPi2
>>>>>>> >
>>>>>>> > At this page [1] there is a sample for go but it's unclear to me
>>>>>>> what's the
>>>>>>> > point of it (compile snappy for arm?)
>>>>>>> >
>>>>>>> > Do you have a suggestion/example on how to cross compile snap for
>>>>>>> nodejs and
>>>>>>> > handle compiled dependencies (like with node-gyp)?
>>>>>>> >
>>>>>>> > Thanks, Luca
>>>>>>> >
>>>>>>> > [1] https://developer.ubuntu.com/en/snappy/guides/cross-building/
>>>>>>> >
>>>>>>> > --
>>>>>>> > snappy-app-devel mailing list
>>>>>>> > snappy-app-devel at lists.ubuntu.com
>>>>>>> > Modify settings or unsubscribe at:
>>>>>>> > https://lists.ubuntu.com/mailman/listinfo/snappy-app-devel
>>>>>>> >
>>>>>>>
>>>>>>
>>>>>>
>>>>
>>>
>>
>> --
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>>
>
>
> --
> Regards,
> Woodrow
>
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