When pam PACKAGECONFIG is enabled a cups "pam.d" configuration file is
installed. The default configuration file uses a non-existing "pam_unknown.so",
but a different existing module can be selected by passing the
--with-pam-module parameter. Use the unix pam module when pam is enabled.
Signed-off-by: Diego Rondini <diego.rondini@kynetics.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
