From 8f6fec4364b5eaf00a5ae07c70517cc3fc74e33b Mon Sep 17 00:00:00 2001
From: Delyan Angelov <delian66@gmail.com>
Date: Fri, 12 Feb 2021 01:18:35 +0200
Subject: [PATCH] ci: fix building examples/concurrency/concurrency.v on macos

---
 vlib/sync/sync_macos.c.v | 1 +
 1 file changed, 1 insertion(+)

diff --git a/vlib/sync/sync_macos.c.v b/vlib/sync/sync_macos.c.v
index 8fda9dce3f..8c3e320039 100644
--- a/vlib/sync/sync_macos.c.v
+++ b/vlib/sync/sync_macos.c.v
@@ -7,6 +7,7 @@ import time
 
 #flag -lpthread
 #include <semaphore.h>
+#include <sys/errno.h>
 
 [trusted]
 fn C.pthread_mutex_init(voidptr, voidptr) int