xorg-server: logind support requires --enable-udev, however works without udev running, is udev really needed?

[Hans de Goede]

Hi,

On 19-03-19 22:01, Piotr Karbowski wrote:
> Hi,
> 
> Today I've been integrating a elogind, a drop-in replacement for
> systemd-logind and I came across a hard dependency of
> --enable-systemd-logind on --enable-config-udev.
> 
> configure: error: systemd-logind is only supported in combination with
> udev configuration.
> 
> However I was able to get Xorg working without suid with elogind while
> running mdev from busybox, I've been keeping user in `video` and `input`
> groups meaning that Xorg running as my user does have access to input
> devices.
> 
> My system does not run udev at all, however I kept it around as a stub
> to make xorg-server build with --enable-config-udev.
> 
> Can you please confirm that udev is really needed, or, if not, would it
> be possible to make --enable-systemd-logind buildable with
> --disable-config-udev?

I'm surprised that this works at all, but regardless using the logind
integration without the udev integration is definitely not something
which we want to support, sorry.

Regards,

Hans