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-rw-r--r--src/backend/storage/lmgr/spin.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/storage/lmgr/spin.c b/src/backend/storage/lmgr/spin.c
index 9b71744cc6c..e5a9d353730 100644
--- a/src/backend/storage/lmgr/spin.c
+++ b/src/backend/storage/lmgr/spin.c
@@ -30,7 +30,9 @@
#include "storage/spin.h"
+#ifndef HAVE_SPINLOCKS
PGSemaphore SpinlockSemaArray;
+#endif
/*
* Report the amount of shared memory needed to store semaphores for spinlock