diff --git a/src/libCom/osi/os/posix/epicsAtomicOSD.h b/src/libCom/osi/os/posix/epicsAtomicOSD.h
index 9dad0e204..892d2dcb5 100644
--- a/src/libCom/osi/os/posix/epicsAtomicOSD.h
+++ b/src/libCom/osi/os/posix/epicsAtomicOSD.h
@@ -26,6 +26,10 @@ typedef struct EpicsAtomicLockKey {} EpicsAtomicLockKey;
 extern "C" {
 #endif /* __cplusplus */
 
+epicsShareFunc void epicsAtomicLock ( struct EpicsAtomicLockKey * );
+epicsShareFunc void epicsAtomicUnlock ( struct EpicsAtomicLockKey * );
+epicsShareFunc void epicsAtomicMemoryBarrierFallback ( void );
+
 #ifndef EPICS_ATOMIC_READ_MEMORY_BARRIER
 EPICS_ATOMIC_INLINE void epicsAtomicReadMemoryBarrier (void)
 {
@@ -40,10 +44,6 @@ EPICS_ATOMIC_INLINE void epicsAtomicWriteMemoryBarrier (void)
 }
 #endif
 
-epicsShareFunc void epicsAtomicLock ( struct EpicsAtomicLockKey * );
-epicsShareFunc void epicsAtomicUnlock ( struct EpicsAtomicLockKey * );
-epicsShareFunc void epicsAtomicMemoryBarrierFallback ( void );
-
 #ifdef __cplusplus
 } /* end of extern "C" */
 #endif /* __cplusplus */