generic-poky/meta/conf/distro/poky-bleeding.conf

PREFERRED_VERSION_glib-2.0 ?= "2.12.11"
PREFERRED_VERSION_glib-2.0-native ?= "2.12.4"

PREFERRED_VERSION_cairo ?= "1.4.2"
PREFERRED_VERSION_pango ?= "1.16.1"
PREFERRED_VERSION_gtk+ ?= "2.10.11"

require conf/distro/poky.conf