From ef84c3b8b97b073cd989e9d19171f6d46bfcbd37 Mon Sep 17 00:00:00 2001
From: JosiahWI <41302989+JosiahWI@users.noreply.github.com>
Date: Mon, 23 Aug 2021 15:13:47 -0500
Subject: [PATCH] Set policies through CMake 3.9 to allow enabling IPO (#11560)

---
 CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7b2663341..65c6bf6c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,12 @@
 cmake_minimum_required(VERSION 3.5)
 
+# Set policies up to 3.9 since we want to enable the IPO option
+if(${CMAKE_VERSION} VERSION_LESS 3.9)
+	cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
+else()
+	cmake_policy(VERSION 3.9)
+endif()
+
 # This can be read from ${PROJECT_NAME} after project() is called
 project(minetest)
 set(PROJECT_NAME_CAPITALIZED "Minetest")