From 359cfe47123c7dd8481c6a0ca8c7552805b72871 Mon Sep 17 00:00:00 2001
From: Matthias Ringwald <matthias@ringwald.ch>
Date: Tue, 25 Sep 2018 08:35:06 +0200
Subject: [PATCH] hci_dump: fix compile warnings (request POSIX support)

---
 src/hci_dump.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/hci_dump.c b/src/hci_dump.c
index 4ba1fd449..cc709e661 100644
--- a/src/hci_dump.c
+++ b/src/hci_dump.c
@@ -51,6 +51,9 @@
 
 #include "btstack_config.h"
 
+// enable POSIX functions (needed for -std=c99)
+#define _POSIX_C_SOURCE 200809
+
 #include "hci_dump.h"
 #include "hci.h"
 #include "hci_transport.h"