From dc6e55c49dc22b66bb021cc61c624f04aa9f6776 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Sun, 31 May 2020 00:19:06 -0400
Subject: [PATCH] Fix implicit declaration of ptsname_r()

---
 src/ptmx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/ptmx.c b/src/ptmx.c
index 8f8c654..0bc3ab5 100644
--- a/src/ptmx.c
+++ b/src/ptmx.c
@@ -1,5 +1,4 @@
-#define _XOPEN_SOURCE
-#define _XOPEN_SOURCE_EXTENDED
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>