>I build it for Debian/Ubuntu on the build farm, and it seems to be
>building fine for me.

Do you build with -DBUILD_ALL=ON? Looks like you build with that 
option OFF:

http://git.trinitydesktop.org/cgit/tde-
packaging/tree/ubuntu/raring/applications/kbfx/debian/rules

The default is OFF, which means -DBUILD_DOC=OFF and -
DBUILD_TRANSLATIONS=OFF. When either -DBUILD_DOC=ON or -
DBUILD_TRANSLATIONS=ON the build fails.

Darrell