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To: gentoo-dev@g.o
From: Matt Turner <mattst88@g.o>
Subject: Re: Re: How to handle dependencies on protocol headers?
Date: Fri, 16 Sep 2011 01:24:44 -0400
On Fri, Sep 16, 2011 at 12:49 AM, Zac Medico <zmedico@g.o> wrote:
> On 09/15/2011 09:42 PM, Matt Turner wrote:
>> On Fri, Sep 16, 2011 at 12:32 AM, Matt Turner <mattst88@g.o> wrote:
>>> Often packages depending on X11 libraries will also have to specify
>>> the X11 libraries' proto packages in DEPEND. This is because the X11
>>> library itself #includes files provided by the proto package. It's not
>>> really that the X11 library depends on this at run-time, so the
>>> protocol packages aren't specified in the RDEPEND of the libraries.
>>>
>>> This is documented in a number of bug reports (see 379545), and it
>>> seems that the decision is between
>>>  - add proto package to dependency list of packages using X11 libs
>>>  - add proto package to rdepend list of the relevant library itself
>>>
>>> The first is more correct, I think, but it's also much more annoying.
>>> Mesa winds up having x11-proto/inputproto in DEPEND for some long
>>> forgotten reason, for instance.
>>>
>>> The second option is much simpler and less error prone, but removes
>>> the ability to depclean the proto packages.
>>>
>>> It seems that some sort of DEPEND variable that means "I only need
>>> this when other packages are building against me" would be useful.
>>> Thoughts?
>>>
>>> Matt
>>
>> Another similar situation:
>>
>> https://bugs.gentoo.org/show_bug.cgi?id=342393
>
> Maybe the virtual/mesa-build approach that I suggested can be adapted to
> other similar situations:
>
>  https://bugs.gentoo.org/show_bug.cgi?id=342393#c23

That would no doubt help the case of Mesa, but as can be seen by
http://tinderbox.dev.gentoo.org/misc/rindex/x11-proto/ , there are
lots of other cases as well.

Matt


References:
Re: How to handle dependencies on protocol headers?
-- Matt Turner
Re: Re: How to handle dependencies on protocol headers?
-- Zac Medico
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