GLEW: Define static + enabled and includes via SCons

This allows us not to have to hack our definitions in the upstream files,
making it easier to upgrade to newer versions in the future.

For the include paths to work, the headers are moved to a GL subfolder to
match their upstream location.

5 files changed, 12 insertions, 15 deletions

diff --git a/drivers/gl_context/glew.h b/drivers/gl_context/GL/glew.h
index 39c8162de..3de3e86a4 100644
--- a/drivers/gl_context/glew.h
+++ b/drivers/gl_context/GL/glew.h
@@ -80,8 +80,6 @@
 #define __glew_h__
 #define __GLEW_H__
 
-#define GLEW_STATIC
-
 #if defined(__gl_h_) || defined(__GL_H__) || defined(__X_GL_H)
 #error gl.h included before glew.h
 #endif
diff --git a/drivers/gl_context/glxew.h b/drivers/gl_context/GL/glxew.h
index 985c946d8..ab4d03da4 100644
--- a/drivers/gl_context/glxew.h
+++ b/drivers/gl_context/GL/glxew.h
@@ -80,8 +80,6 @@
 #define __glxew_h__
 #define __GLXEW_H__
 
-#define GLEW_STATIC
-
 #ifdef __glxext_h_
 #error glxext.h included before glxew.h
 #endif
@@ -99,7 +97,7 @@
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/Xmd.h>
-#include "drivers/gl_context/glew.h"
+#include <GL/glew.h>
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/drivers/gl_context/wglew.h b/drivers/gl_context/GL/wglew.h
index a6722748b..ae06b0cba 100644
--- a/drivers/gl_context/wglew.h
+++ b/drivers/gl_context/GL/wglew.h
@@ -56,8 +56,6 @@
 #define __wglew_h__
 #define __WGLEW_H__
 
-#define GLEW_STATIC
-
 #ifdef __wglext_h_
 #error wglext.h included before wglew.h
 #endif
diff --git a/drivers/gl_context/SCsub b/drivers/gl_context/SCsub
index 7cf8629fe..dac27c012 100644
--- a/drivers/gl_context/SCsub
+++ b/drivers/gl_context/SCsub
@@ -1,5 +1,11 @@
 Import('env')
-Export('env');
 
 env.add_source_files(env.drivers_sources,"*.cpp")
-env.add_source_files(env.drivers_sources,"*.c")
+
+if (env.get('glew') == 'yes'):
+	env.add_source_files(env.drivers_sources,"glew.c")
+	env.Append(CPPFLAGS = ['-DGLEW_ENABLED'])
+	env.Append(CPPFLAGS = ['-DGLEW_STATIC'])
+	env.Append(CPPPATH = ['.'])
+
+Export('env')
diff --git a/drivers/gl_context/glew.c b/drivers/gl_context/glew.c
index fc0aa28a7..df824f3c7 100644
--- a/drivers/gl_context/glew.c
+++ b/drivers/gl_context/glew.c
@@ -1,4 +1,3 @@
-#ifdef GLEW_ENABLED
 /*
 ** The OpenGL Extension Wrangler Library
 ** Copyright (C) 2002-2008, Milan Ikits <milan ikits[]ieee org>
@@ -30,11 +29,11 @@
 ** THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#include "drivers/gl_context/glew.h"
+#include <GL/glew.h>
 #if defined(_WIN32)
-#  include "drivers/gl_context/wglew.h"
+#  include <GL/wglew.h>
 #elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
-#  include "drivers/gl_context/glxew.h"
+#  include <GL/glxew.h>
 #endif
 
 /*
@@ -15156,5 +15155,3 @@ GLboolean glxewIsSupported (const char* name)
 }
 
 #endif /* _WIN32 */
-
-#endif