Download the busybox source from: http://leaf.cvs.sourceforge.net/leaf/src/bering-uclibc/apps/busybox/

copy the .config file from http://leaf.cvs.sourceforge.net/leaf/src/bering-uclibc/configs/busybox/1.00/ to the busybox source directory

Build busybox by doing:

make

After compiling change the permission of the busybox binary with:

chmod 4755 busybox

copy busybox.list from the source directory to root.bb.links