From 744bcf3d85c47774a500542be4be5860b6869caa Mon Sep 17 00:00:00 2001
From: Costa Tsaousis <costa@netdata.cloud>
Date: Thu, 11 Jan 2024 20:43:54 +0200
Subject: [PATCH] fix cmake _GNU_SOURCE warnings (#16761)

---
 mqtt_websockets/src/mqtt_ng.c         | 2 ++
 mqtt_websockets/src/mqtt_wss_client.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/mqtt_websockets/src/mqtt_ng.c b/mqtt_websockets/src/mqtt_ng.c
index 81cffccf0d9589..2d5981c76da5aa 100644
--- a/mqtt_websockets/src/mqtt_ng.c
+++ b/mqtt_websockets/src/mqtt_ng.c
@@ -1,4 +1,6 @@
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 #include <stdint.h>
 #include <stdlib.h>
diff --git a/mqtt_websockets/src/mqtt_wss_client.c b/mqtt_websockets/src/mqtt_wss_client.c
index 01e2ffce790db6..7d9d6a76cb50de 100644
--- a/mqtt_websockets/src/mqtt_wss_client.c
+++ b/mqtt_websockets/src/mqtt_wss_client.c
@@ -10,7 +10,9 @@
 //
 // You should have received a copy of the GNU General Public License along with this program.
 // If not, see <https://www.gnu.org/licenses/>.
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 #include "mqtt_wss_client.h"
 #include "mqtt_ng.h"