From 6e3a6d99905ba787e5a57bdbc1025978d1e720a2 Mon Sep 17 00:00:00 2001
From: calvin2021y <user@github.com.invalid>
Date: Wed, 7 Jul 2021 19:10:06 +0100
Subject: [PATCH] openssl: manage _GNU_SOURCE better

---
 lib/tls/openssl/openssl-client.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/tls/openssl/openssl-client.c b/lib/tls/openssl/openssl-client.c
index af764c0f7..aa1c5df16 100644
--- a/lib/tls/openssl/openssl-client.c
+++ b/lib/tls/openssl/openssl-client.c
@@ -25,8 +25,10 @@
 #include "lws_config.h"
 #ifdef LWS_HAVE_X509_VERIFY_PARAM_set1_host
 /* Before glibc 2.10, strnlen required _GNU_SOURCE */
+#if !defined(_GNU_SOURCE)
 #define _GNU_SOURCE
 #endif
+#endif
 #include <string.h>
 
 #include "private-lib-core.h"