From 43bfb979e5b61df66e5aa42f620c9e2e4d492391 Mon Sep 17 00:00:00 2001
From: Ahmad Fatoum <ahmad@a3f.at>
Date: Sat, 4 May 2019 23:05:30 +0200
Subject: [PATCH] examples: CMake: warn once only about macOS OpenGL
 deprecation

Otherwise compiling rlgl is too spammy. While at it remove
the now unneeded CheckIncludeFiles.
---
 examples/CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 5f0b0242..fd8a0255 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -24,7 +24,10 @@ foreach(example_dir ${example_dirs})
   list(APPEND example_resources ${resources})
 endforeach()
 
-include(CheckIncludeFiles)
+if (NOT CMAKE_SYSTEM STRLESS "Darwin-18.0.0")
+  add_definitions(-DGL_SILENCE_DEPRECATION)
+  MESSAGE(AUTHOR_WARNING "OpenGL is deprecated starting with macOS 10.14 (Mojave)!")
+endif()
 set(OUTPUT_EXT)
 list(REMOVE_ITEM example_sources ${CMAKE_CURRENT_SOURCE_DIR}/others/rlgl_standalone.c)