From 69b7d67e4667ada9bad6cf0bf97c5e199dce58e6 Mon Sep 17 00:00:00 2001
From: sleeptightAnsiC <91839286+sleeptightAnsiC@users.noreply.github.com>
Date: Thu, 23 Jan 2025 18:44:28 +0100
Subject: [PATCH] [rglfw] fix: supress warning: "_GNU_SOURCE" redefined

When compiling rglfw.c with GCC or Clang following warning appears:

In file included from rglfw.c:99:
external/glfw/src/posix_poll.c:27:9: warning: "_GNU_SOURCE" redefined
   27 | #define _GNU_SOURCE
      |         ^~~~~~~~~~~

This commit suppresses said warning by checking,
if _GNU_SOURCE has NOT been defined, and only then defining it.

Since said macro has been always defined in posix_poll and wl_window,
this commit does not change any behavior at all (it just suppresses the
warning, that's it).
---
 src/external/glfw/src/posix_poll.c | 4 +++-
 src/external/glfw/src/wl_window.c  | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/external/glfw/src/posix_poll.c b/src/external/glfw/src/posix_poll.c
index b53e36e80..55ef606d0 100644
--- a/src/external/glfw/src/posix_poll.c
+++ b/src/external/glfw/src/posix_poll.c
@@ -24,7 +24,9 @@
 //
 //========================================================================
 
-#define _GNU_SOURCE
+#if !defined(_GNU_SOURCE)
+    #define _GNU_SOURCE
+#endif
 
 #include "internal.h"
 
diff --git a/src/external/glfw/src/wl_window.c b/src/external/glfw/src/wl_window.c
index 505166eff..356e5eee1 100644
--- a/src/external/glfw/src/wl_window.c
+++ b/src/external/glfw/src/wl_window.c
@@ -25,7 +25,9 @@
 //
 //========================================================================
 
-#define _GNU_SOURCE
+#if !defined(_GNU_SOURCE)
+    #define _GNU_SOURCE
+#endif
 
 #include "internal.h"