From 8fb9c30cbc3511b7047dd31c9dfb6de5e95c7034 Mon Sep 17 00:00:00 2001
From: Matthias Ringwald <matthias@ringwald.ch>
Date: Tue, 31 May 2022 18:07:57 +0200
Subject: [PATCH] libusb: fix build

---
 port/libusb/main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/port/libusb/main.c b/port/libusb/main.c
index ce6e82f26..cb5938b53 100644
--- a/port/libusb/main.c
+++ b/port/libusb/main.c
@@ -49,6 +49,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <signal.h>
+#include <unistd.h>
 
 #include "btstack_config.h"