[poky] [OT] splitting GIT repositories

[Gary Thomas]

On 2011-09-08 07:58, Gary Thomas wrote:
> On 2011-09-08 07:52, Chris Larson wrote:
>> On Thu, Sep 8, 2011 at 5:55 AM, Gary Thomas<gary at mlbassoc.com> wrote:
>>> Sorry for the off-topic question, but I'm sure that I'm not the
>>> only Poky user out there that has a similar dilemma.
>>>
>>> When I started working with Poky (quite some years ago), I added
>>> my code/recipes/... to the Poky GIT tree locally. This let me
>>> keep my parts up to date with the global repository fairly easily.
>>> I've tried to keep things such that my changes are separated from
>>> the Poky master changes.
>>>
>>> Now that the layering system is working well, and indeed I could
>>> move from pure Yocto/Poky to oe-core, I'd like to split my files
>>> away from the Poky tree I've been using. I'd also like to keep
>>> history, etc, for my code as I do this.
>>>
>>> Is there some way to purge Poky master from my local tree? In
>>> other words, remove all the Yocto/Poky files& directories, including
>>> any history/commits/etc that go along with them?
>>>
>>> I've experimented some with clone + filter-branch which does
>>> strip away the parts I don't want, but the history is cluttered
>>> with Poky mainline commits. In the end, I'd like to end up with
>>> just my files and the commits that created them.
>>
>> Make sure you pass --prune-empty to your filter-branch command. Unless
>> all your files are within a particular subdirectory (in which case you
>> can use subdirectory-filter), you may want to use an index-filter with
>> git rm --cached of the files you don't care about (perhaps by using
>> ls-files and grepping out the paths you know you care about).
>
> Could you give an example of this black magic? I've read through the
> GIT man pages and they are quite terse.
>
> I did try this using subdirectory-filter and it kept only the files
> I wanted but when I ran 'gitk --all', the history still went back to
> day 1 of the Poky tree.
>
> Thanks for your help

BTW, I found this script: https://github.com/apenwarr/git-subtree/blob/master/git-subtree.txt

The 'split' function did exactly what I was looking for.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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