[poky] RFC/RFT Checksums as part of stamp files

[Tian, Kevin]

>From: Richard Purdie [mailto:richard.purdie at linuxfoundation.org]
>Sent: Friday, January 07, 2011 7:09 PM
>
>On Fri, 2011-01-07 at 12:49 +0800, Tian, Kevin wrote:
>> >I'm also aware that this idea isn't going to be universally liked,
>> >particularly I can guess that Koen is going to have concerns about this
>> >and Angstrom since the lack of PR bumps means package feeds could start
>> >to suffer.
>>
>> worthy of a config option? We may need see from real use whether this will
>> trigger many unnecessary rebuilds and how much impact to people's daily
>> work. Basically the incremental builds will be much more heavier than before,
>> though this in concept is more correct...
>
>They are potentially heavier, yes.
>
>With this and other factors in mind, I've merged a new signature
>generator class into poky with this as the only added feature. Now with
>poky's master branch you can add:
>
>BB_SIGNATURE_HANDLER = "basichash"
>
>to local.conf to enable this functionality (the default is "basic").
>
>At some point we are likely to decide to change the default in
>bitbake.conf but this makes it easier for people to test.
>
>For reference, my test builds completed successfully.
>

my build finishes successfully too. I will manually bump PR to test its chain
rebuild effect for some gut-feeling. :-)

Thanks
Kevin