[meta-ti] [PATCH] adjust BBPATH to be a good citizen of layer world

[Khem Raj]

On Nov 7, 2013, at 9:37 AM, Denys Dmytriyenko <denys at ti.com> wrote:

> On Thu, Nov 07, 2013 at 09:15:40AM -0800, Khem Raj wrote:
>> 
>> On Nov 7, 2013, at 8:59 AM, Denys Dmytriyenko <denys at ti.com> wrote:
>> 
>>> On Wed, Nov 06, 2013 at 08:55:55PM -0800, Khem Raj wrote:
>>>> On Wed, Nov 6, 2013 at 8:29 PM, Maupin, Chase <chase.maupin at ti.com> wrote:
>>>>> This seems like a reversal of http://arago-project.org/git/meta-ti.git?a=commit;h=dabd83e96fe99d0c3d1a88be4d1637831526d217
>>>>> 
>>>>> Looks like there may be a need to cover the different use cases and 
>>>>> understand what each person is trying to do :)
>>>>> 
>>>> 
>>>> ah I see what caused this all pain. So now meta-ti is odd ball out.
>>>> this patch should have never gone in.
>>> 
>>> Khem,
>>> 
>>> If you remember, we discussed this with Richard and he suggested this as a 
>>> solution to the ordering problem. Otherwise people tend to append any extra 
>>> layers _after_ oe-core, which should be the other way around in order to 
>>> override anything in there…
>> 
>> I think the problem is when you have many other layers then the whole 
>> paradigm changes to it and you end up with same issue upside down. I think 
>> how you order bblayer.conf can control the override of oe-core, I wish if 
>> distro’s could control the layer.conf for each bsp layer then it wouldnt 
>> matter as much
> 
> I agree this is a bigger issue. I looked at some layers and found few that 
> prepend themselves, while most of others just append.
> 
> The order inside bblayers.conf is much more important than people let to 
> believe. For example, if multiple layers define the machine config, the first 
> one listed in bblayers.conf wins - this is a real problem for beagleboard.conf 
> that is currently being defined in meta-ti as well as meta-yocto-bsp (as a 
> reference platform) and meta-beagleboard too. Very soon the same problem will 
> happen to beaglebone.conf, when meta-yocto-bsp picks it up as a reference...
> 
> Anyway, the biggest issue I'm trying to work around with this change is the 
> "shadowing" of the new-style DTBs that I ported from Dora to Dylan. If meta-ti 
> is not in front of oe-core, the old-style DTBs come into play and DTBs are not 
> built at all. So, this is not really an issue for Dora or master, and those 
> don't need to be prepended after all…


Now its even more intriguing since you changed meta-ti/master and I would have expected this change to
show up in meta-ti/dylan or are you claiming all sort of oe-core branches to work with meta-ti/master
thats a perilous path.

> 
> 
>>>>>> -----Original Message-----
>>>>>> From: meta-ti-bounces at yoctoproject.org[mailto:meta-ti-
>>>>>> bounces at yoctoproject.org] On Behalf Of Khem Raj
>>>>>> Sent: Thursday, November 07, 2013 7:55 AM
>>>>>> To: meta-ti at yoctoproject.org
>>>>>> Subject: [meta-ti] [PATCH] adjust BBPATH to be a good citizen of
>>>>>> layer world
>>>>>> 
>>>>>> Currently, meta-ti appears as first path in BBPATH
>>>>>> rest of layers append so lets do the same
>>>>>> 
>>>>>> helps distros with multiple BSP layers to include meta-ti
>>>>>> 
>>>>>> Signed-off-by: Khem Raj <raj.khem at gmail.com>
>>>>>> ---
>>>>>> conf/layer.conf | 2 +-
>>>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>>> 
>>>>>> diff --git a/conf/layer.conf b/conf/layer.conf
>>>>>> index e39bd85..faa4ac0 100644
>>>>>> --- a/conf/layer.conf
>>>>>> +++ b/conf/layer.conf
>>>>>> @@ -1,5 +1,5 @@
>>>>>> # We have a conf and classes directory, append to BBPATH
>>>>>> -BBPATH =. "${LAYERDIR}:"
>>>>>> +BBPATH .= ":${LAYERDIR}"
>>>>>> 
>>>>>> # We have a recipes directory, add to BBFILES
>>>>>> BBFILES += "${LAYERDIR}/recipes*/*/*.bb
>>>>>> ${LAYERDIR}/recipes*/*/*.bbappend"
>>>>>> --
>>>>>> 1.8.3.2
>>>>>> 
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