From 7f65a36866f4e24dd1446fe1c9d21424f28bcabd Mon Sep 17 00:00:00 2001
From: Deve <deveee@gmail.com>
Date: Wed, 14 Nov 2018 21:07:29 +0100
Subject: [PATCH] Fixed compilation with current mesa versions.

As you can see in
https://cgit.freedesktop.org/mesa/mesa/tree/include/GL/glext.h
now the file uses __gl_glext_h_ instead of __glext_h_
It's precisely caused by commit f7d42ee7d319256608ad60778f6787c140badada

Backoprt notes: 

* The original patch adjusts auto/src/glew_head.h only
* include/GL/glew.h is not part of git repo and gets created on tarball
  creation

=> patch include/GL/glew.h either to cause the desired fix

Upstream-Status: Backport [1]

[1] https://github.com/nigels-com/glew/commit/7f65a36866f4e24dd1446fe1c9d21424f28bcabd

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
---
 auto/src/glew_head.h | 3 ++-
 include/GL/glew.h    | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/auto/src/glew_head.h b/auto/src/glew_head.h
index c19cefb..8f313d9 100644
--- a/auto/src/glew_head.h
+++ b/auto/src/glew_head.h
@@ -14,7 +14,7 @@
 #if defined(__REGAL_H__)
 #error Regal.h included before glew.h
 #endif
-#if defined(__glext_h_) || defined(__GLEXT_H_)
+#if defined(__glext_h_) || defined(__GLEXT_H_) || defined(__gl_glext_h_)
 #error glext.h included before glew.h
 #endif
 #if defined(__gl_ATI_h_)
@@ -30,6 +30,7 @@
 #define __X_GL_H
 #define __glext_h_
 #define __GLEXT_H_
+#define __gl_glext_h_
 #define __gl_ATI_h_
 
 #if defined(_WIN32)
diff --git a/include/GL/glew.h b/include/GL/glew.h
index b5b6987..a9f9e4b 100644
--- a/include/GL/glew.h
+++ b/include/GL/glew.h
@@ -93,7 +93,7 @@
 #if defined(__REGAL_H__)
 #error Regal.h included before glew.h
 #endif
-#if defined(__glext_h_) || defined(__GLEXT_H_)
+#if defined(__glext_h_) || defined(__GLEXT_H_) || defined(__gl_glext_h_)
 #error glext.h included before glew.h
 #endif
 #if defined(__gl_ATI_h_)
@@ -109,6 +109,7 @@
 #define __X_GL_H
 #define __glext_h_
 #define __GLEXT_H_
+#define __gl_glext_h_
 #define __gl_ATI_h_
 
 #if defined(_WIN32)
-- 
2.20.1