package/domoticz: fix build with libexecinfo

Fix build failure raised since the addition of the libexecinfo package
in commit eea8ba446c10701a273432552108d80fb2224ef4

Fixes:
 - Not autobuilder failures (yet)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/domoticz/domoticz.mk

@@ -41,6 +41,11 @@ DOMOTICZ_CONF_OPTS += \
 	-DUSE_BUILTIN_SQLITE=OFF \
 	-DUSE_BUILTIN_MQTT=OFF
 
+ifeq ($(BR2_PACKAGE_LIBEXECINFO),y)
+DOMOTICZ_DEPENDENCIES += libexecinfo
+DOMOTICZ_CONF_OPTS += -DEXECINFO_LIBRARIES=-lexecinfo
+endif
+
 ifeq ($(BR2_PACKAGE_LIBUSB),y)
 DOMOTICZ_DEPENDENCIES += libusb
 DOMOTICZ_CONF_OPTS += -DWITH_LIBUSB=ON