From e6266cb95ce9ea7e8fdcc1e2298bcb0513416f3e Mon Sep 17 00:00:00 2001
From: Ken Brown <kbrown@cornell.edu>
Date: Thu, 11 Jan 2018 11:40:37 -0500
Subject: [PATCH] Unbreak the Cygwin-w32 build

* src/keyboard.c (input_polling_used) [CYGWIN]: Restore.  This was
removed on Cygwin in the commit "On non-MS-Windows, omit unnecessary
polling functions".  But it is used in w32fns.c:x_make_frame_visible
in the Cygwin-w32 build.
---
 src/keyboard.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/keyboard.c b/src/keyboard.c
index 07392b7d495..714c8fee656 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -1932,7 +1932,7 @@ start_polling (void)
 #endif
 }
 
-#ifdef DOS_NT
+#if defined CYGWIN || defined DOS_NT
 /* True if we are using polling to handle input asynchronously.  */
 
 bool
-- 
2.39.2