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-rw-r--r--nuttx/sched/sem_internal.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/nuttx/sched/sem_internal.h b/nuttx/sched/sem_internal.h
index 4b3d30fb1..cbb7e96dd 100644
--- a/nuttx/sched/sem_internal.h
+++ b/nuttx/sched/sem_internal.h
@@ -100,7 +100,11 @@ EXTERN void sem_addholder(FAR sem_t *sem);
EXTERN void sem_boostpriority(FAR sem_t *sem);
EXTERN void sem_releaseholder(FAR sem_t *sem);
EXTERN void sem_restorebaseprio(FAR _TCB *stcb, FAR sem_t *sem);
+# ifndef CONFIG_DISABLE_SIGNALS
EXTERN void sem_canceled(FAR _TCB *stcb, FAR sem_t *sem);
+# else
+# define sem_canceled(stcb, sem)
+# endif
#else
# define sem_initholders()
# define sem_destroyholder(sem)