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-rw-r--r--contrib/ntp/ntpd/check_y2k.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/contrib/ntp/ntpd/check_y2k.c b/contrib/ntp/ntpd/check_y2k.c
index f0f4480..6b83115 100644
--- a/contrib/ntp/ntpd/check_y2k.c
+++ b/contrib/ntp/ntpd/check_y2k.c
@@ -45,6 +45,9 @@
# if !defined(VMS) /*wjm*/
# include <sys/param.h>
# endif /* VMS */
+# if HAVE_SYS_SIGNAL_H
+# include <sys/signal.h>
+# endif /* HAVE_SYS_SIGNAL_H */
# include <sys/signal.h>
# ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
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