From 35a65361ffb937188aebfda5e00c39c108ce9797 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Camilla=20L=C3=B6wy?= <elmindreda@elmindreda.org>
Date: Fri, 4 Mar 2022 13:37:38 +0100
Subject: [PATCH] POSIX: Fix undeclared function warning on Cygwin

(cherry picked from commit adc202d2c3182ca6ad8344624941e56d8e0bc493)
---
 src/x11_window.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/x11_window.c b/src/x11_window.c
index a86a8ff1..bf923fe6 100644
--- a/src/x11_window.c
+++ b/src/x11_window.c
@@ -27,9 +27,7 @@
 // It is fine to use C99 in this file because it will not be built with VS
 //========================================================================
 
-#if defined(__linux__)
- #define _GNU_SOURCE
-#endif
+#define _GNU_SOURCE
 
 #include "internal.h"