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-rw-r--r--components/libc/pthreads/mqueue.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/libc/pthreads/mqueue.c b/components/libc/pthreads/mqueue.c
index 1af0ab2919..a59c7a445b 100644
--- a/components/libc/pthreads/mqueue.c
+++ b/components/libc/pthreads/mqueue.c
@@ -8,6 +8,7 @@
*/
#include <string.h>
+#include <sys/signal.h>
#include "mqueue.h"
#include "pthread_internal.h"