@@ -460,10 +460,11 @@
 				AC_DEFINE(OF_HAVE_RECURSIVE_PTHREAD_MUTEXES, 1,
 					[If pthread mutexes can be recursive])
 			])
 
 			AC_CHECK_FUNC(pthread_spin_lock, [
+				have_spinlocks="yes"
 				AC_DEFINE(OF_HAVE_PTHREAD_SPINLOCKS, 1,
 					[Whether we have pthread spinlocks])
 			])
 
 			AC_CHECK_FUNC(sched_yield, [
@@ -866,11 +867,11 @@
 	echo "  ** install Clang >= 3.2."
 	echo
 ])
 
 AS_IF([test x"$enable_threads" != x"no" -a x"$atomic_ops" = x"none" \
-    -a x"ac_cv_func_pthread_spin_lock" != x"yes"], [
+    -a x"$have_spinlocks" != x"yes"], [
 	echo
 	printf "  ** Warning: You have enabled threads, but neither atomic "
 	echo "operations nor"
 	printf "  ** spinlocks are available. Expect *very* poor performance, "
 	echo "as a mutex will"