make gtk+ fully optional

[Christoph Junghans]

This patch does two things:
- adds back support for >=gtk-2.0 instead of gtk-3.0 only for distributions, which are a bit behind with gtk+
- allows to disable gtk+ greeter even if gtk+ is installed (in the case one only wants the qt4 greeter)

[Christoph Junghans (junghans)]

An updated version of the patch for ligthdm-0.9.5

[Robert Ancell (robert-ancell)]

I've made a similar change to make the GTK and Qt greeters optional. I'm not going to support GTK2, it will have to be patched in distributions that don't use GTK3 yet.

[Markos Chandras (hwoarang)]

Are you sure this is fixed? I can't see the patch neither in 1.0.2 nor in the hg repo

[Markos Chandras (hwoarang)]

You seem to have applied the patch wrong.

In configure.ac this line is broken.
elif test x"enable_gtk_greeter" = "xyes"; then

you forgot to put a '$' before enable_gtk_greeter variable

Please re-open this bug since it is not fixed

[Robert Ancell (robert-ancell)]

Fixed in 1.0 branch and trunk. Not this only means --enable-gtk-greeter=yes is broken, i.e. no and auto still work fine.