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Date: Thu, 12 Sep 2013 10:17:30 +0800
From: Robert Yang <liezhi.yang@windriver.com>
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To: Richard Purdie <richard.purdie@linuxfoundation.org>
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Subject: Re: [RFC PATCH] bitbake.conf: Stop providing ${P} and ${PF} by default
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On 09/11/2013 06:10 PM, Richard Purdie wrote:
> On Wed, 2013-09-11 at 17:31 +0800, Robert Yang wrote:
>>
>> On 09/10/2013 10:08 PM, Richard Purdie wrote:
>>> On Tue, 2013-09-10 at 15:33 +0800, Robert Yang wrote:
>>>> Thanks, Can we provide a replacement for the "bitbake PN-PV" since it is
>>>> useful, for example, can we support the PREFERRED_VERSION_${PN} in the env
>>>> in the future ? There is a similar bug:
>>>>
>>>> https://bugzilla.yoctoproject.org/show_bug.cgi?id=4965
>>>
>>> If you set BB_PRESERVE_ENV=1 you can set PREFERRED_VERSION_xxx from the
>>> environment so this should already be possible?
>>>
>>
>> It seems that the BB_PRESERVE_ENV=1 doesn't work, but we use the
>> BB_ENV_EXTRAWHITE, for example:
>>
>> $ export BB_ENV_EXTRAWHITE="$BB_ENV_EXTRAWHITE PREFERRED_VERSION_make"
>> $ export PREFERRED_VERSION_make="3.81",
>>
>> Then it works, maybe something is wrong with the BB_PRESERVE_ENV.
>
> It is broken, yes, I've sent out a patch to fix it. There is one other

Thanks, it worked now.

> problem, you can't use "-" in a shell environment variable so you can't
> do:
>
> PREFERRED_VERSION_make-native = xxx
>
> which is annoying. We might want to add some kind of mangling mechanism
> like a double underscore translating to a dash or something...
>

I will update these in the bugzilla

// Robert

> Cheers,
>
> Richard
>
>
>
>