From f62a6f237b05bfc0df94b8a89c59dd74f1747bdc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Matth=C3=A4us=20G=2E=20Chajdas?= <dev@anteru.net>
Date: Sat, 13 Mar 2021 14:14:41 +0100
Subject: [PATCH] Enable policy 77 if possible.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When using OpenEXR as a submodule, you currently can't set a variable
outside of it as the option will override it (so you need to set the
option.) With policy 77 in place, this works as expected.

Signed-off-by: Matthäus G. Chajdas <dev@anteru.net>
---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 38567930eb..8d197242ad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,11 @@ if(POLICY CMP0074)
   cmake_policy(SET CMP0074 NEW)
 endif()
 
+if(POLICY CMP0077)
+  # enable variables set outside to override options
+  cmake_policy(SET CMP0077 NEW)
+endif()
+
 #######################################
 # Create project and include cmake
 # configuration files