From 74abbd08981ee8f27e07373ec1ca9725ada91dfb Mon Sep 17 00:00:00 2001
From: chacha21 <pierre@chachatelier.fr>
Date: Thu, 2 Mar 2017 16:58:51 +0100
Subject: [PATCH] Fix compilation when USE_ZLIB is false

create a dummy gzFile type
---
 modules/core/src/persistence.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/core/src/persistence.cpp b/modules/core/src/persistence.cpp
index 5faede3ae8..31004c46e0 100644
--- a/modules/core/src/persistence.cpp
+++ b/modules/core/src/persistence.cpp
@@ -67,6 +67,8 @@
 #    define _FILE_OFFSET_BITS 0
 #  endif
 #  include <zlib.h>
+#else
+typedef void* gzFile;
 #endif
 
 /****************************************************************************************\