@@ -216,10 +216,13 @@
 		AC_MSG_RESULT(libkern/OSAtomic.h)
 	else
 		AC_MSG_RESULT(none)
 		AC_MSG_ERROR(No atomic operations found! Try --disable-threads.)
 	fi
+else
+	dnl We can only have one thread - therefore everything is atomic
+	AC_DEFINE(OF_ATOMIC_OPS, 1, [Whether we have atomic operations])
 fi
 
 AC_CHECK_LIB(socket, socket, LIBS="$LIBS -lsocket")
 AC_CHECK_LIB(ws2_32, main, LIBS="$LIBS -lws2_32")