[Mesa-dev] [PATCH 7/7] automake: properly handle non-default expat installation

Emil Velikov emil.l.velikov at gmail.com
Fri Oct 11 14:14:12 PDT 2013

On 11/10/13 20:44, Tom Stellard wrote:
> On Fri, Oct 11, 2013 at 02:09:57PM +0100, Emil Velikov wrote:
>> On 07/10/13 18:53, Emil Velikov wrote:
>>> On 07/10/13 16:48, Tom Stellard wrote:
>>>> On Sat, Sep 28, 2013 at 03:46:21PM +0100, Emil Velikov wrote:
>>>>> Use PKG_CHECK_MODULE over requesting the user to setup the
>>>>> option at configure time. Drop unused EXPAT_INCLUDE and add
>>>>> EXPAT_CFLAGS to all classic/dri and gallium/dri targets.
>>>>> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
>>>>> ---
>> [...]
>>>> Is it possible to get the same behavior as the --with-expat option by
>>>> setting EXPAT_* environment variables at configure time?  If so, it would
>>>> be nice to add a note to the commit message explaining how to do this.
>>> Very nice point Tom.
>>> No, it cannot in it's current form. My intent was so standardise
>>> handling of mesa dependencies. That means it will break on certain
>>> (hacky) setups, where expat is available without expat.pc or when they
>>> are linking against system libdrm, libudev, etc. and custom expat. It's
>>> a all or nothing solution.
>>> From my POV the solution for those people would be have an enviroment
>>> where all the libraries are present (coordinated) in a single location
>>> (available to pkg-config via PKG_CONFIG_PATH).
>>> FWIW Archlinux, Gentoo, Fedora, OpenSUSE and Debian do not use the flag.
>>> Sorry for the lengthy explanation.
>> Hi Tom,
>> I believe that this is not the answer you were hoping for, nor the one I
>> wanted to give.
>> With that said if you have any objections feel free to drop the patch,
>> as long as the rest of the series still lives :)
> I don't have any objections to this patch, but I think you should add a
> note to the commit message that the --with-expat flag is being removed
> and that build configurations that use it are no longer supported.
Should have seen this in your previous question. Done.

> It may be hard to track down who, if anyone, is using this flag, so I
> think the best thing to do would be to commit this and see who complains.
Hehe nice one :)

> -Tom
>> The whole annotated and rebased series is available in the
>> xorg-cleanups-v2 branch at https://github.com/evelikov/Mesa.git
Rebased and pushed to the same branch :P


>> ~Emil
>>> Cheers
>>> Emil
>>>> -Tom

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