From e650fd362ee7753ca906e1d92121a165ce45ecb6 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 26 Feb 2018 12:24:18 -0800
Subject: [PATCH] Fix _socket module compilation on Cygwin. (GH-4137) (GH-4145)

(cherry picked from commit 63ae04461fb0cc93ca57cd151103a8dd295581d6)
---
 Modules/socketmodule.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index b455021c2f..36920f7f86 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -240,7 +240,7 @@ http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getaddrinfo.c.diff?r1=1.82&
 # include <ctype.h>
 #endif
 
-#if defined(__APPLE__) || defined(__NetBSD__)
+#if defined(__APPLE__) || defined(__CYGWIN__) || defined(__NetBSD__)
 # include <sys/ioctl.h>
 #endif
 
-- 
2.40.0