From af00b5e304127c36b181200bcd7cdd0ac7d52a61 Mon Sep 17 00:00:00 2001
From: James Turner <james@flightgear.org>
Date: Fri, 5 Jun 2020 13:33:19 +0100
Subject: [PATCH] Set CMake OpenGL VND policy

---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b8435a162..c753a3ea2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,6 +22,11 @@ if(COMMAND cmake_policy)
     if(POLICY CMP0071)
         cmake_policy(SET CMP0071 NEW)
     endif()
+
+    # OpenGL VND policy : use the old definition for now, until we can audit this
+    if(POLICY CMP0072)
+        cmake_policy(SET CMP0071 OLD)
+    endif()
 endif()
 
 message("CMAKE Build type: ${CMAKE_BUILD_TYPE}")