package/pure-ftpd: add optional openldap dependency

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/pure-ftpd/pure-ftpd.mk

@@ -31,6 +31,13 @@ ifeq ($(BR2_PACKAGE_LIBSODIUM),y)
 PURE_FTPD_DEPENDENCIES += libsodium
 endif
 
+ifeq ($(BR2_PACKAGE_OPENLDAP),y)
+PURE_FTPD_CONF_OPTS += --with-ldap
+PURE_FTPD_DEPENDENCIES += openldap
+else
+PURE_FTPD_CONF_OPTS += --without-ldap
+endif
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 PURE_FTPD_CONF_OPTS += --with-tls
 PURE_FTPD_DEPENDENCIES += openssl