package/shairport-sync: bump to version 2.1.8

Bump to version 2.1.8:
* remove comment about COPYING (fixed upstream)
* adapt ssl configure option for openssl and polarssl

Signed-off-by: Jörg Krause <jkrause@posteo.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/shairport-sync/shairport-sync.mk

@@ -4,12 +4,9 @@
 #
 ################################################################################
 
-SHAIRPORT_SYNC_VERSION = 2.1.5
+SHAIRPORT_SYNC_VERSION = 2.1.8
 SHAIRPORT_SYNC_SITE = $(call github,mikebrady,shairport-sync,$(SHAIRPORT_SYNC_VERSION))
 
-# Note: the COPYING file contains the text of GPLv3, but none of the
-# code is under this license. Bug reported upstream at
-# https://github.com/mikebrady/shairport-sync/issues/13.
 SHAIRPORT_SYNC_LICENSE = MIT, BSD-3c
 SHAIRPORT_SYNC_LICENSE_FILES = LICENSES
 SHAIRPORT_SYNC_DEPENDENCIES = alsa-lib libdaemon popt
@@ -27,10 +24,10 @@ endif
 # OpenSSL or PolarSSL
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 SHAIRPORT_SYNC_DEPENDENCIES += openssl
-SHAIRPORT_SYNC_CONF_OPTS += --with-openssl
+SHAIRPORT_SYNC_CONF_OPTS += --with-ssl=openssl
 else
 SHAIRPORT_SYNC_DEPENDENCIES += polarssl
-SHAIRPORT_SYNC_CONF_OPTS += --with-polarssl
+SHAIRPORT_SYNC_CONF_OPTS += --with-ssl=polarssl
 endif
 
 ifeq ($(BR2_PACKAGE_SHAIRPORT_SYNC_LIBSOXR),y)