From 17d26869b519b322f5b0ecc47710fc6c1264673a Mon Sep 17 00:00:00 2001
From: Erik Frojdh <erik.frojdh@gmail.com>
Date: Thu, 25 Jan 2018 14:32:04 +0100
Subject: [PATCH] specific libpng version

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 74fc7ba35..a62652639 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@ find_package(Qt4)
 find_package(Qwt 6)
 find_package(CBF)
 find_package(Doxygen)
-find_package(PNG REQUIRED)
+find_package(PNG 1.6 REQUIRED)
 include_directories(${PNG_INCLUDE_DIR})
 
 if (USE_HDF5)