Index: cmake/modules/FindDNSSD.cmake
===================================================================
--- cmake/modules/FindDNSSD.cmake	(revision 546069)
+++ cmake/modules/FindDNSSD.cmake	(working copy)
@@ -14,11 +14,15 @@
   /usr/include/avahi-compat-libdns_sd/
 )
 
-FIND_LIBRARY(DNSSD_LIBRARIES NAMES dns_sd
-  PATHS
-  /usr/lib
-  /usr/local/lib
-)
+if (APPLE)
+   set(DNSSD_LIBRARIES "/usr/lib/libSystem.dylib")
+else(APPLE)
+   FIND_LIBRARY(DNSSD_LIBRARIES NAMES dns_sd
+     PATHS
+     /usr/lib
+     /usr/local/lib
+   )
+endif (APPLE)
 
 if (DNSSD_INCLUDE_DIR AND DNSSD_LIBRARIES)
    set(DNSSD_FOUND TRUE)