Someone

make[2]: Entering directory `/var/tmp/paludis/gnome-base/control-center-2.21.92/work/gnome-control-center-2.21.92/help'
mkdir en_GB/
(cd en_GB/ &&     /usr/bin/xml2po -e  /var/tmp/paludis/gnome-base/control-center-2.21.92/work/gnome-control-center-2.21.92/help//var/tmp/paludis/gnome-base/control-center-2.21.92/work/gnome-control-center-2.21.92/help/C/control-center.xml > en_GB.po.tmp &&     cp en_GB.po.tmp en_GB.po && rm -f en_GB.po.tmp)
Error: cannot open file '/var/tmp/paludis/gnome-base/control-center-2.21.92/work/gnome-control-center-2.21.92/help//var/tmp/paludis/gnome-base/control-center-2.21.92/work/gnome-control-center-2.21.92/help/C/control-center.xml'.