From 7dad0f23d65000748f1132cb65019b888b1ebd77 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@intel.com>
Date: Mon, 20 Jan 2020 17:45:56 +0300
Subject: [PATCH] build: workaround for FORTIFY_SOURCE=2 builds on Alpine

---
 modules/videoio/src/precomp.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/videoio/src/precomp.hpp b/modules/videoio/src/precomp.hpp
index 8bee786..02242f7 100644
--- a/modules/videoio/src/precomp.hpp
+++ b/modules/videoio/src/precomp.hpp
@@ -42,6 +42,11 @@
 #ifndef __VIDEOIO_H_
 #define __VIDEOIO_H_
 
+#if defined __linux__ || defined __APPLE__ || defined __HAIKU__
+#include <unistd.h>  // -D_FORTIFY_SOURCE=2 workaround: https://github.com/opencv/opencv/issues/15020
+#endif
+
+
 #include "opencv2/videoio.hpp"
 #include "opencv2/videoio/legacy/constants_c.h"
 
-- 
2.7.4