/usr/bin/ld: cannot find -lXv
collect2: ld returned 1 exit status
make[2]: *** [libmyth-0.20.so.0.20.0] Error 1
make[2]: Leaving directory `/home/mouser/mythtv-0.20/libs/libmyth'
make[1]: *** [sub-libmyth] Error 2
make[1]: Leaving directory `/home/mouser/mythtv-0.20/libs'
make: *** [sub-libs] Error 2