diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8b5b887..711b047 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,11 +11,15 @@ set(INSTALL_LIB "${CMAKE_INSTALL_PREFIX}/lib/openvpn")
 
 list(APPEND CMAKE_C_FLAGS "-Wall -Wextra -pedantic")
 
+find_library(LIBLDAP NAMES "ldap")
+
 message(STATUS "------------------------------------------")
 message(STATUS "Build type is:        ${CMAKE_BUILD_TYPE}")
 message(STATUS "")
 message(STATUS "Install prefix:       ${CMAKE_INSTALL_PREFIX}")
 message(STATUS "Library directory:    ${INSTALL_LIB}")
+message(STATUS "")
+message(STATUS "ldap:                 ${LIBLDAP}")
 
 add_subdirectory (src)
 add_subdirectory (tests)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 861f3bc..fb7c7ef 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,5 @@
-add_library("openvpn-auth-ldap" SHARED "config.c" "ldapauth.c" "main.c")
+add_library("openvpn-auth-ldap" SHARED "config.c" "ldapauth.c" "plugin.c")
+target_link_libraries("openvpn-auth-ldap" "ldap")
 
 install(TARGETS "openvpn-auth-ldap"
         LIBRARY DESTINATION "${INSTALL_LIB}")
diff --git a/src/ldapauth.c b/src/ldapauth.c
index 2eaaef2..7b785d1 100644
--- a/src/ldapauth.c
+++ b/src/ldapauth.c
@@ -4,6 +4,7 @@
 #include <string.h>
 #include <sys/time.h>
 
+#define LDAP_DEPRECATED 1
 #include <ldap.h>
 
 #include "config.h"
@@ -90,4 +91,4 @@ check_against_ldap(oal_config_t * const config,
   error_opts:
   config->error = strndup(err, bufsize);
   return 1;
-}
\ No newline at end of file
+}