mosquitto: enable WITH_ADNS for glibc builds

WITH_ADNS option has been added in version 1.4.11

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mosquitto/mosquitto.mk

@@ -17,6 +17,13 @@ MOSQUITTO_MAKE_OPTS = \
 	WITH_WRAP=no \
 	WITH_DOCS=no
 
+# adns uses getaddrinfo_a
+ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
+MOSQUITTO_MAKE_OPTS += WITH_ADNS=yes
+else
+MOSQUITTO_MAKE_OPTS += WITH_ADNS=no
+endif
+
 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
 MOSQUITTO_MAKE_OPTS += WITH_THREADING=yes
 else