rls is extra_excluded in debian rules file:
# extra modules to skip, because they are not compilable now # - regardless if they go to the main kamailio package or to some module package, # they will be excluded from compile and install of all EXTRA_EXCLUDED_MODULES=bdb dbtext oracle pa rls iptrtpproxy
I tested and modules_k/rls compiles fine. I think the above text is true only for ser's version.
regards Klaus