From ea6a8e09c6778074c88c410ebf40967f66fb4328 Mon Sep 17 00:00:00 2001
From: Nils Schimmelmann <nschimme@gmail.com>
Date: Mon, 20 May 2019 13:54:43 -0700
Subject: Fix use of undeclared identifier 'SIGWINCH' on Mac


diff --git a/utils.c b/utils.c
index 2211a8c..f6582ef 100644
--- a/utils.c
+++ b/utils.c
@@ -10,6 +10,15 @@
  *
  */
 
+#ifdef BSD_LIKE
+/* Needed for SIGWINCH on OpenBSD. */
+# define _BSD_SOURCE
+/* Needed for SIGWINCH on FreeBSD. */
+# define __BSD_VISIBLE
+/* Needed for SIGWINCH on Darwin. */
+# define _DARWIN_C_SOURCE 1
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-- 
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