How to use functions from libs in /usr/local/lib in pam?

[Ilmar S. Habibulin]

I'm trying to write pam module, which uses libs from /usr/local/lib (lber
and lsap). What should i put in Makefile in order to link module with this
libs?

LIBLDAP= /usr/local/lib/ldap.a

LDADD+= -L/usr/local/lib -lldap
LDFLAGS += -L/usr/local/lib -lldap
DPADD= ${LIBCRYPT} ${LIBLDAP}

doesn't help.

Thanks in advance.