keepalived: add libglib2 optional dependency

gio from libglib2 is used for dbus support

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

package/keepalived/keepalived.mk

@@ -11,7 +11,6 @@ KEEPALIVED_LICENSE = GPL-2.0+
 KEEPALIVED_LICENSE_FILES = COPYING
 # 0001-configure.ac-do-not-force-PIE.patch
 KEEPALIVED_AUTORECONF = YES
-KEEPALIVED_CONF_OPTS += --disable-dbus
 
 ifeq ($(BR2_PACKAGE_JSON_C),y)
 KEEPALIVED_DEPENDENCIES += json-c
@@ -20,6 +19,13 @@ else
 KEEPALIVED_CONF_OPTS += --disable-json
 endif
 
+ifeq ($(BR2_PACKAGE_LIBGLIB2),y)
+KEEPALIVED_DEPENDENCIES += libglib2
+KEEPALIVED_CONF_OPTS += --enable-dbus
+else
+KEEPALIVED_CONF_OPTS += --disable-dbus
+endif
+
 ifeq ($(BR2_PACKAGE_LIBNL)$(BR2_PACKAGE_LIBNFNETLINK),yy)
 KEEPALIVED_DEPENDENCIES += libnl libnfnetlink
 KEEPALIVED_CONF_OPTS += --enable-libnl