[BUG] broken build: build.sh / libevdev

Gaetan Nadon memsize at videotron.ca
Mon Oct 7 18:52:50 PDT 2013

On 13-10-07 08:38 PM, Peter Hutterer wrote:
> On Mon, Oct 07, 2013 at 05:12:26PM -0400, Gaetan Nadon wrote:
>> On 13-10-07 12:13 PM, Knut Petersen wrote:
>>> On 07.10.2013 17:52, Alan Coopersmith wrote:
>>>> On 10/ 7/13 05:44 AM, Knut Petersen wrote:
>>>>> As libevdev is required now for building xorg,
>>>>> it should also be supported via "build.sh -L".
>>>> Perhaps - but build.sh doesn't build libc, a kernel with DRM support,
>>>> and all the other requirements we expect to be there before building
>>>> Xorg modules.
>>> I erroneously assumed that libevdev is part of xorg.
>> The wiki page http://www.x.org/wiki/ModularDevelopersGuide/#index2h2
>> documents the dependencies (projects such as Mesa and libraries such as
>> libcrypto) required to build all 200+ modules in the xorg project.
>> Peter,
>> Is the long term plan for libevdev to become an additional dependencies
>> for the X.Org project? That is not a precedent, we already have mesa,
>> pixman and xkeyboard-config as non-xorg dependencies we build. I can add
>> it to build.sh. If in a few years it become ubiquitous, it can be
>> removed. I can also update the above wiki page as well.
> libevdev will be a dependency for synaptics, evdev, and possibly the server.
> it's not an X.Org project though, just an external library. it's handled by
> the release.sh script because I'm lazy and don't want to copy that script
> but that's as close as it'll get.  like libunwind it's just a library we
> depend on and we don't need to add this to the build scripts.
> having said that, if you want to add it like mesa/pixman/etc. to the build
> script I'm not going to stop you :)
Ok, I'll do that. we don't have much of a choice as it is very recent
and not available through distros.

I can't get libevdev to build:

    In file included from libevdev.c:32:0:
    libevdev-int.h:96:30: error: 'ABS_MT_TOOL_Y' undeclared here (not in
    a function)

    libevdev.c: In function 'libevdev_set_clock_id':
    libevdev.c:1435:24: error: 'EVIOCSCLOCKID' undeclared (first use in
    this function)

Looks like that belong to multitouch porotocol in uapi input.h, probably
at a later kernel than I have. Mine is 3.2.0-54. I don't recall having
seen specific kernel requirement in any xorg modules.

I am guessing right here?

>> There is a similar issue with libmtdev, so I might document this one as
>> well. It seems to be more available on distros.
> we've relied on mtdev for quite some time now. any distro that still doesn't
> provide mtdev but still wants to ship the latest packages needs to sort that
> out themselves.
> Cheers,
>    Peter
>> All,
>> README excerpt
>>     |libevdev is a wrapper library for evdev devices. it moves the common
>>     tasks when dealing with evdev devices into a library and provides a library
>>     interface to the callers, thus avoiding erroneous ioctls, etc.
>>     git://git.freedesktop.org/git/libevdev
>>     http://cgit.freedesktop.org/libevdev/
>>     **libevdev is currently in early stages of development. Use at your own risk**
>>     The eventual goal is that libevdev wraps all ioctls available to evdev
>>     devices, thus making direct access unnecessary.|

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