[OE-core] [PATCH 2/2] rootfs_rpm.bbclass: don't remove rpmlib when INC_RPM_IMAGE_GEN=1

[Mark Hatle]

On 5/9/12 10:01 AM, Koen Kooi wrote:
>
> Op 9 mei 2012, om 16:52 heeft Mark Hatle het volgende geschreven:
>
>> On 5/9/12 3:50 AM, Koen Kooi wrote:
>>>
>>> Op 9 mei 2012, om 10:20 heeft Robert Yang het volgende geschreven:
>>>
>>>> Don't remove rpmlib when INC_RPM_IMAGE_GEN=1, otherwise the
>>>> list_installed_packages would get nothing in the second build.
>>>
>>> What happens when I do a build, enable INC_RPM_IMAGE_GEN and do another build?
>>
>> The intention is that only the packages that have been changed/upgraded will be installed.  Instead of the whole image being generated from scratch each time.
>
> That's what INC_RPM_IMAGE_GEN does, yes. What I'm asking is how this patch addresses the sequence I outlined above.

Explain what you mean by "build".

Using the following:

. ./oe-init-build-env build-test
<setup local.conf w/ rpm packaging and INC_RPM_IMAGE_GEN>
bitbake core-image-core
--- time passes, git pull pulls in changes ---
bitbake core-image-core

The second "build", only the changed packages will be added to the image.

You you are using different build directories, then it doesn't re-use anything. 
  The purpose of this is incremental software development within a single build 
directory.

--Mark

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