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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 aa68f45..3d6315b 100644
--- a/include/signal.h
+++ b/include/signal.h
@@ -2,6 +2,8 @@
# include <signal/signal.h>
# ifndef _ISOMAC
+# include <sigsetops.h>
+
libc_hidden_proto (sigemptyset)
libc_hidden_proto (sigfillset)
libc_hidden_proto (sigaddset)