Re: How to temporarily disable a package rebuild during an image build?

[Alex J Lennon <ajlennon@dynamicdevices.co.uk>]

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On 30/01/2014 23:54, Adam Lee wrote:
> Hi Alex, so are you bitbaking the entire image every time you make a
> change to the kernel (The .bb file you linked is the image recipe)?
> If you only build the kernel (ie bitbake virtual/kernel), your system
> shouldn't build the entire image.
>
> Let me know!
>

That's exactly right Adam. I'm bitbaking an SD card image, writing that
to a uSD card and booting it up :)

In theory that should result in the kernel rebuild and a nice image for
me to use.

In actuality numbers of other things seem to decide they need to be
rebuilt, which doesn't appear to be too much of a time-sink,
excepting for QT4

> Adam
>
>
> On Thu, Jan 30, 2014 at 3:11 PM, Alex J Lennon
> <ajlennon@dynamicdevices.co.uk <mailto:ajlennon@dynamicdevices.co.uk>>
> wrote:
>
>     Hi Adam,
>
>
>     On 30/01/2014 18:40, Adam Lee wrote:
>>     I am not sure if that's the correct behaviour at all. If you are
>>     building the kernel, it should only build the kernel (and its deps).
>>     How are you building it? I suppose you are doing 'bitbake
>>     virtual/kernel', but just checking!
>>
>
>     I'm building an image for test, based on fsl-image-gui out of
>     meta-fsl-arm.
>
>     It looks like that fsl image pulls in qt4 -
>
>     https://github.com/Freescale/meta-fsl-demos/blob/master/recipes-fsl/images/fsl-image-gui.bb
>
>     I don't quite understand why qt4 is rebuilding but if I had to
>     guess perhaps it's got a dependency on framebuffer support or
>     something.
>
>     I could probably go in and change the image recipes if I really
>     had to, but I'd rather leave them as is, assuming correctness of
>     dependencies,
>     I'd rather change an environment variable during my debug cycle to
>     temporarily contrain rebuilding of packages that I know don't need to
>     be rebuilt, so things revert to "correct" when I'm finished
>     porting the kernel
>
>     Cheers,
>
>     Alex
>
>
>
>>     Adam
>>
>>
>>     On Wed, Jan 29, 2014 at 12:09 PM, Alex J Lennon
>>     <ajlennon@dynamicdevices.co.uk
>>     <mailto:ajlennon@dynamicdevices.co.uk>> wrote:
>>
>>         Hi,
>>
>>         I was wondering if there's a per-package environment variable
>>         I could
>>         use to contrain the rebuilding of packages?
>>
>>         i.e. I am modifying a linux-imx kernel, rebuilding that
>>         kernel package
>>         and then generating an output filesystem image to boot from
>>         an SD card
>>         for testing.
>>
>>         Each time I modify linux-imx I am finding that qt4 does a
>>         rebuild.
>>
>>         So whilst I'm making changes to linux-imx for test I'd rather
>>         that q4
>>         didn't rebuild when I build the image, and was wondering if
>>         there's a
>>         way to prevent that?
>>
>>         (I could, I suppose, move to a testing model that didn't use a
>>         completely rebuilt SD card image but I like this approach as
>>         if it
>>         works, well, it works, and I can distribute. Perhaps there's
>>         a better way?)
>>
>>         Thanks,
>>
>>         Alex
>>
>>         _______________________________________________
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>>
>>
>
>     -- 
>
>     Dynamic Devices Ltd <http://www.dynamicdevices.co.uk/>
>
>     Alex J Lennon / Director
>     1 Queensway, Liverpool L22 4RA
>
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>
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-- 

Dynamic Devices Ltd <http://www.dynamicdevices.co.uk/>

Alex J Lennon / Director
1 Queensway, Liverpool L22 4RA

mobile: +44 (0)7956 668178

Linkedin <http://www.linkedin.com/in/alexjlennon> Skype
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Anyone who communicates with us by e-mail is deemed to have accepted
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