diff --git a/contrib/dlz/config.dlz.in b/contrib/dlz/config.dlz.in
index 5d65a85..2677b26 100644
--- a/contrib/dlz/config.dlz.in
+++ b/contrib/dlz/config.dlz.in
@@ -17,6 +17,13 @@
 #
 dlzdir='${DLZ_DRIVER_DIR}'
 
+AC_MSG_CHECKING([for target libdir])
+AC_RUN_IFELSE([int main(void) {exit((sizeof(void *) == 8) ? 0 : 1);}],
+	[target_lib=lib64],
+	[target_lib=lib],
+)
+AC_MSG_RESULT(["$target_lib"])
+
 #
 # Private autoconf macro to simplify configuring drivers:
 #
@@ -152,23 +159,11 @@ then
 			then
 				use_dlz_mysql=$d
 				mysql_include=$d/include/mysql
-			if test -d $d/lib/mysql
-				then
-				mysql_lib=$d/lib/mysql
-				else
-					mysql_lib=$d/lib
-				fi
 				break
 			elif test -f $d/include/mysql.h
 			then
 				use_dlz_mysql=$d
 				mysql_include=$d/include
-				if test -d $d/lib/mysql
-				then
-					mysql_lib=$d/lib/mysql
-				else
-					mysql_lib=$d/lib
-				fi
 				break
 			fi
 		done
@@ -179,21 +174,9 @@ then
 	if test -f $d/include/mysql/mysql.h
 	then
 		mysql_include=$d/include/mysql
-		if test -d $d/lib/mysql
-		then
-			mysql_lib=$d/lib/mysql
-		else
-			mysql_lib=$d/lib
-		fi
 	elif test -f $d/include/mysql.h
 	then
 		mysql_include=$d/include
-		if test -d $d/lib/mysql
-		then
-			mysql_lib=$d/lib/mysql
-		else
-			mysql_lib=$d/lib
-		fi
 	fi
 fi
 
@@ -217,6 +200,12 @@ case "$use_dlz_mysql" in
 [using mysql with libs ${mysql_lib} and includes ${mysql_include}])
 		;;
 	*)
+		if test -d $use_dlz_mysql/${target_lib}/mysql
+		then
+			mysql_lib=$use_dlz_mysql/${target_lib}/mysql
+		else
+			mysql_lib=$use_dlz_mysql/${target_lib}
+		fi
 		DLZ_ADD_DRIVER(MYSQL, dlz_mysql_driver,
 				[-I${mysql_include}],
 				[-L${mysql_lib} -lmysqlclient -lz -lcrypt -lm])
@@ -310,9 +299,9 @@ case "$use_dlz_bdb" in
 					then
 						break
 					fi
-				elif test -f "$dd/lib/lib${d}.so"
+				elif test -f "$dd/${target_lib}/lib${d}.so"
 				then
-					dlz_bdb_libs="-L${dd}/lib -l${d}"
+					dlz_bdb_libs="-L${dd}/${target_lib} -l${d}"
 					break
 				fi
 			done
@@ -414,7 +403,7 @@ case "$use_dlz_ldap" in
 	*)
 		DLZ_ADD_DRIVER(LDAP, dlz_ldap_driver,
 				[-I$use_dlz_ldap/include],
-				[-L$use_dlz_ldap/lib -lldap -llber])
+				[-L$use_dlz_ldap/${target_lib} -lldap -llber])
 
 		AC_MSG_RESULT(
 [using LDAP from $use_dlz_ldap/lib and $use_dlz_ldap/include])
@@ -450,11 +439,11 @@ then
 		odbcdirs="/usr /usr/local /usr/pkg"
 		for d in $odbcdirs
 		do
-			if test -f $d/include/sql.h -a -f $d/lib/libodbc.a
+			if test -f $d/include/sql.h -a -f $d/${target_lib}/libodbc.a
 			then
 				use_dlz_odbc=$d
 				dlz_odbc_include="-I$use_dlz_odbc/include"
-				dlz_odbc_libs="-L$use_dlz_odbc/lib -lodbc"
+				dlz_odbc_libs="-L$use_dlz_odbc/${target_lib} -lodbc"
 				break
 			fi
 		done