Gentoo: Problem beim emerge von KDE

ximagesrc.c: In function `gst_ximagesrc_change_state':
ximagesrc.c:443: error: structure has no member named `damage_event_base'
make[3]: * [libgstximagesink_la-ximagesrc.lo] Error 1
make[3]: Leaving directory `/var/tmp/portage/gst-plugins-0.8.11/work/gst-plugins-0.8.11/sys/ximage'
make[2]: * [all-recursive] Error 1
make[2]: Leaving directory `/var/tmp/portage/gst-plugins-0.8.11/work/gst-plugins-0.8.11/sys'
make[1]: * [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/gst-plugins-0.8.11/work/gst-plugins-0.8.11'
make: * [all] Error 2

!!! ERROR: media-libs/gst-plugins-0.8.11 failed.
Call stack:
ebuild.sh, line 1539: Called dyn_compile
ebuild.sh, line 939: Called src_compile
gst-plugins-0.8.11.ebuild, line 52: Called die

!!! (no error message)
!!! If you need support, post the topmost build error, and the call stack if relevant.

Wie kann man hier Abhilfe schaffen?