The lua bindings are installed automatically as part of the base libcircllhist install.
After a successful make install the lua bindings will be placed in /usr/local/share/lua/5.1/.
local h = Circllhist:new()
h.insert(1)
h.insert(2)
local h2 = Circllhist.from_data({1,2})
assert(h:isequal(h2))