@@ -11,11 +11,12 @@
 #undef OF_HAVE_OSATOMIC
 #undef OF_HAVE_OSATOMIC_64
 #undef OF_HAVE_PROPERTIES
 #undef OF_HAVE_PTHREADS
 #undef OF_HAVE_PTHREAD_SPINLOCKS
+#undef OF_HAVE_RECURSIVE_PTHREAD_MUTEXES
 #undef OF_HAVE_SCHED_YIELD
 #undef OF_HAVE_SYS_SELECT_H
 #undef OF_OBJFW_RUNTIME
 #undef OF_PLUGINS
 #undef OF_THREADS
 #undef SIZE_MAX