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-rw-r--r--include/signal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/signal.h b/include/signal.h
index 693aeb807a..1a14ff3dc7 100644
--- a/include/signal.h
+++ b/include/signal.h
@@ -1,3 +1,4 @@
+#ifndef _SIGNAL_H
#if defined __need_sig_atomic_t || defined __need_sigset_t
# include <signal/signal.h>
#else
@@ -23,3 +24,4 @@ extern int __sigreturn __P ((struct sigcontext *__scp));
extern int __sigaltstack __P ((__const struct sigaltstack *__ss,
struct sigaltstack *__oss));
#endif
+#endif