From 510976f13056422ff0f90a6870772f57f03b26a9 Mon Sep 17 00:00:00 2001
From: JosiahWI <41302989+JosiahWI@users.noreply.github.com>
Date: Sun, 14 May 2023 13:54:03 -0500
Subject: [PATCH] Prefer GLVND at CMake>=3.11

CMake 3.10 introduced GLVND support. CMake 3.11 introduced CMP0072,
which prefers GLVND when NEW behavior is set. I set default policies to
3.11 for CMake versions >=3.11 and did not bother with requesting GLVND
for CMake 3.10.
---
 CMakeLists.txt                 | 6 +++---
 source/Irrlicht/CMakeLists.txt | 1 -
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c289434f1..919c3c902 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,10 @@
 cmake_minimum_required(VERSION 3.5)
 
-# Set policies up to 3.9 since we want to enable the IPO option
-if(${CMAKE_VERSION} VERSION_LESS 3.9)
+# >=3.9 enables IPO; >=3.11 prefers GLVND
+if(${CMAKE_VERSION} VERSION_LESS 3.11)
 	cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
 else()
-	cmake_policy(VERSION 3.9)
+	cmake_policy(VERSION 3.11)
 endif()
 
 set(IRRLICHTMT_REVISION 11)
diff --git a/source/Irrlicht/CMakeLists.txt b/source/Irrlicht/CMakeLists.txt
index 2ddd04cdd..90c429940 100644
--- a/source/Irrlicht/CMakeLists.txt
+++ b/source/Irrlicht/CMakeLists.txt
@@ -261,7 +261,6 @@ if(ENABLE_GLES2)
 	find_package(OpenGLES2 REQUIRED)
 endif()
 if(ENABLE_OPENGL OR ENABLE_OPENGL3)
-	set(OpenGL_GL_PREFERENCE "LEGACY")
 	find_package(OpenGL REQUIRED)
 endif()
 if(USE_SDL2)