From 23ac1c2e91aa7d8ba6f5e3d6179c29e3a0413156 Mon Sep 17 00:00:00 2001
From: falkTX <falktx@falktx.com>
Date: Mon, 30 Aug 2021 16:12:51 +0100
Subject: [PATCH] Use apple gl3 headers as needed; Allow build with glew

Signed-off-by: falkTX <falktx@falktx.com>
---
 dgl/OpenGL.hpp | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/dgl/OpenGL.hpp b/dgl/OpenGL.hpp
index 9328e5c1..67a0ddd2 100644
--- a/dgl/OpenGL.hpp
+++ b/dgl/OpenGL.hpp
@@ -67,13 +67,20 @@
 // OpenGL includes
 
 #ifdef DISTRHO_OS_MAC
-# include <OpenGL/gl.h>
+# ifdef DGL_USE_OPENGL3
+#  include <OpenGL/gl3.h>
+#  include <OpenGL/gl3ext.h>
+# else
+#  include <OpenGL/gl.h>
+# endif
 #else
 # ifndef DISTRHO_OS_WINDOWS
 #  define GL_GLEXT_PROTOTYPES
 # endif
-# include <GL/gl.h>
-# include <GL/glext.h>
+# ifndef __GLEW_H__
+#  include <GL/gl.h>
+#  include <GL/glext.h>
+# endif
 #endif
 
 // -----------------------------------------------------------------------