[oe] Patch for libfann-2.0.0 recipe

[Koen Kooi]

On 19-06-09 01:05, Tom Rini wrote:
> On Thu, Jun 18, 2009 at 08:24:29PM +0200, Koen Kooi wrote:
>> On 18-06-09 20:11, Philip Balister wrote:
>>> Koen Kooi wrote:
>>>> On 18-06-09 18:52, Otavio Salvador wrote:
>>>>> Hello Koen,
>>>>>
>>>>> On Thu, Jun 18, 2009 at 1:48 PM, Koen Kooi<k.kooi at student.utwente.nl>
>>>>> wrote:
>>>>>>> PR = "r01"
>>>>>>
>>>>>> Don't set PR to that.
>>>>>
>>>>> I believe that most people prefer to always have PR field included;
>>>>> obviously it ought to be PR = "r1" or PR = "r0" but it is harder to
>>>>> forget to update it when it shows in the recipe.
>>>>
>>>> That's nonsense. Not setting PR = "r0" in recipes makes maintenance a
>>>> lot easier, e.g. forcing rebuild or all xorg libs. If every recipe was
>>>> already using INC_PR, I might agree with you, but since that isn't the
>>>> case adding PR = "r0" is creating more work.
>>>
>>> Can you explain this a little clearer? I know a number of people on the
>>> list feel like Otavio and it would be really helpful for people to
>>> understand what the downside is to starting with PR = "r0" instead of
>>> leaving it out.
>>
>> Suppose you want to bump PR on every xorg lib recipe, do you want to
>> edit 70 recipes or do you only want to edit 1 .inc file and 3 recipes?
>> If you're in the 'edit 70 recipes' crowd, add PR = "r0" to all recipes
>> in OE. If not, leave it out, bitbake defaults to it anyway.
>> Also, does anyone remember how much pain we had when adding ${PN}-dbg
>> into the default PACKAGES only to discover that lots of recipes were
>> needlessly copying defaults?
>
> But there's no .inc file here.  How about saying:
> - Adding an .inc file MUST switch all the recipes now using it to INC_PR
> - If you're modifying recipes that really should be INC_PR, make them
>    INC_PR while you're in there (the 70 xorg lib recipes not using INC_PR
>    today for example).
> - New recipes that also create a .inc must set INC_PR = "r0" / PR =
>    "${INC_PR}.0"
> - New recipes that are just a single .bb must set PR = "r0"
>
> The arguement against "leave it out, bitbake defaults to it anyway." is
> that "once you make a change it's easier to forget to bump PR/INC_PR if
> it's not staring you in the face".

Shall we start putting every var in a recipe then? Setting vars to their 
default is just bloat and wastes parse time.