From 7f81c3b073f7500ce85fea60bb4ccd9e8bc912e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 5 May 2014 12:30:32 +0200
Subject: [PATCH] configure: Use the same includes for GL that we would use
 later in the code for checking if GLES2 and OpenGL headers can both be
 included

---
 configure.ac | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 6f2c230a04..7315cca42e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -815,14 +815,23 @@ fi
 dnl check if we can include both GL and GLES2 at the same time
 if test "x$HAVE_GL" = "xyes" -a "x$HAVE_GLES2" = "xyes"; then
   GL_INCLUDES="
-# include <GLES2/gl2.h>
-# include <GLES2/gl2ext.h>
+#ifndef GL_GLEXT_PROTOTYPES
+#define GL_GLEXT_PROTOTYPES 1
+#endif
+# ifdef __APPLE__
+#  include <OpenGLES/ES2/gl.h>
+#  include <OpenGLES/ES2/glext.h>
+# else
+#  include <GLES2/gl2.h>
+#  include <GLES2/gl2ext.h>
+# endif
 # if __APPLE__
 #  include <OpenGL/OpenGL.h>
 #  include <OpenGL/gl.h>
+#  include <OpenGL/glu.h>
 # else
-#  include <GL/glu.h>
 #  include <GL/gl.h>
+#  include <GL/glu.h>
 #  if __WIN32__ || _WIN32
 #   include <GL/glext.h>
 #  endif