1 files changed, 4 insertions, 2 deletions
diff --git a/src/signal/restore.c b/src/signal/restore.c
index 873b867e..5ec4f5dd 100644
--- a/src/signal/restore.c
+++ b/src/signal/restore.c
@@ -1,10 +1,12 @@
+#include <features.h>
+
 /* These functions will not work, but suffice for targets where the
  * kernel sigaction structure does not actually use sa_restorer. */
 
-void __restore()
+hidden void __restore()
 {
 }
 
-void __restore_rt()
+hidden void __restore_rt()
 {
 }