From 0188c11e8b1c29bf559cc0be185c674bccb4190d Mon Sep 17 00:00:00 2001
From: mjbudd77 <mjbudd77@gmail.com>
Date: Fri, 10 Jul 2020 15:08:05 -0400
Subject: [PATCH] Added OpenGL preference variable to cmake build file to get
 rid of nuisance warning.

---
 src/CMakeLists.txt | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index afb9a9a4..13e66a35 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,7 +17,13 @@ if(WIN32)
   link_directories( ${CMAKE_SOURCE_DIR}/src/drivers/win/directx )
 else(WIN32)
   # Non Windows System
-  # Use the package PkgConfig to detect headers/library files
+  # UNIX (Linux or Mac OSX)
+
+  #set (OpenGL_GL_PREFERENCE  GLVND)
+  set (OpenGL_GL_PREFERENCE  LEGACY)
+
+  # Use the built-in cmake find_package functions to find dependencies
+  # Use package PkgConfig to detect headers/library what find_package cannot find.
   find_package(PkgConfig REQUIRED)
   find_package(Qt5 COMPONENTS Widgets OpenGL REQUIRED)
   find_package(OpenGL REQUIRED)