[yocto] How to temporarily disable a package rebuild during an image build?

[Adam Lee]

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!

Adam


On Thu, Jan 30, 2014 at 3:11 PM, Alex J Lennon <
ajlennon at 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 at 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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>>
>
>
> --
>
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>
> Alex J Lennon / Director
> 1 Queensway, Liverpool L22 4RA
>
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