Emerging xfce-base/xfce4-panel-4.8.5 failed for me: CCLD libpager.la /usr/lib/gcc/x86_64-pc-linux-gnu/4.5.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lxcb-aux /usr/lib/gcc/x86_64-pc-linux-gnu/4.5.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lxcb-event /usr/lib/gcc/x86_64-pc-linux-gnu/4.5.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lxcb-atom collect2: ld returned 1 exit status make[4]: *** [libpager.la] Error 1 make[4]: Leaving directory `/var/tmp/portage/xfce-base/xfce4-panel-4.8.5/work/xfce4-panel-4.8.5/plugins/pager' It appears that these libs were added to the linker invocation by libtool in response to /usr/lib64/libwnck-1.la from x11-libs/libwnck-2.30.6. So for me the solution was the following: emerge -1 libwnck:1 && emerge -1 xfce4-panel I noticed that current libwnck doesn't install the la file any more. This is since CVS revision 1.10 of the ebuild, committed by ssuominen: http://sources.gentoo.org/gentoo-x86/x11-libs/libwnck/libwnck-2.30.6.ebuild?r1=1.9&r2=1.10 I guess if you would accompany this change in the set of installed files with a revision bump for libwnck:1, then you could have xfce4-panel depend on the more recent revision, thus automatically avoiding any problem caused by the la file.
*** This bug has been marked as a duplicate of bug 366227 ***
