package/systemd: add optional support for qrencode

The support of qrencode depends of the journal gateway feature as it is
used to display the key used to seal the journal.

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/systemd/systemd.mk

@@ -141,8 +141,14 @@ endif
 ifeq ($(BR2_PACKAGE_SYSTEMD_JOURNAL_GATEWAY),y)
 SYSTEMD_DEPENDENCIES += libmicrohttpd
 SYSTEMD_CONF_OPTS += --enable-microhttpd
+ifeq ($(BR2_PACKAGE_LIBQRENCODE),y)
+SYSTEMD_CONF_OPTS += --enable-qrencode
+SYSTEMD_DEPENDENCIES += libqrencode
 else
-SYSTEMD_CONF_OPTS += --disable-microhttpd
+SYSTEMD_CONF_OPTS += --disable-qrencode
+endif
+else
+SYSTEMD_CONF_OPTS += --disable-microhttpd --disable-qrencode
 endif
 
 ifeq ($(BR2_PACKAGE_SYSTEMD_HWDB),y)