diff --git a/src/OpenGL/compiler/Compiler.h b/src/OpenGL/compiler/Compiler.h
index c778626..89acc04 100644
--- a/src/OpenGL/compiler/Compiler.h
+++ b/src/OpenGL/compiler/Compiler.h
@@ -67,6 +67,29 @@
 #define GL_FRAGMENT_SHADER                0x8B30
 #define GL_VERTEX_SHADER                  0x8B31
 
+// Note: GL_ARB_texture_rectangle is part of gl2extchromium.h in the Chromium repo
+// GL_ARB_texture_rectangle
+#ifndef GL_ARB_texture_rectangle
+#define GL_ARB_texture_rectangle 1
+
+#ifndef GL_SAMPLER_2D_RECT_ARB
+#define GL_SAMPLER_2D_RECT_ARB 0x8B63
+#endif
+
+#ifndef GL_TEXTURE_BINDING_RECTANGLE_ARB
+#define GL_TEXTURE_BINDING_RECTANGLE_ARB 0x84F6
+#endif
+
+#ifndef GL_TEXTURE_RECTANGLE_ARB
+#define GL_TEXTURE_RECTANGLE_ARB 0x84F5
+#endif
+
+#ifndef GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB
+#define GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB 0x84F8
+#endif
+
+#endif  // GL_ARB_texture_rectangle
+
 //
 // The base class for the machine dependent compiler to derive from
 // for managing object code from the compile.
diff --git a/src/OpenGL/compiler/OutputASM.cpp b/src/OpenGL/compiler/OutputASM.cpp
index 24012a6..b3385c2 100644
--- a/src/OpenGL/compiler/OutputASM.cpp
+++ b/src/OpenGL/compiler/OutputASM.cpp
@@ -23,8 +23,6 @@
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES3/gl3.h>
-#include <GL/glcorearb.h>
-#include <GL/glext.h>
 
 #include <stdlib.h>
 
diff --git a/src/OpenGL/libGLESv2/Renderbuffer.cpp b/src/OpenGL/libGLESv2/Renderbuffer.cpp
index a970dcf..48a61e9 100644
--- a/src/OpenGL/libGLESv2/Renderbuffer.cpp
+++ b/src/OpenGL/libGLESv2/Renderbuffer.cpp
@@ -22,6 +22,8 @@
 #include "Texture.h"
 #include "utilities.h"
 
+#include "compiler/Compiler.h"
+
 namespace es2
 {
 RenderbufferInterface::RenderbufferInterface()
diff --git a/src/OpenGL/libGLESv2/utilities.h b/src/OpenGL/libGLESv2/utilities.h
index f0fdb4b..321dbc8 100644
--- a/src/OpenGL/libGLESv2/utilities.h
+++ b/src/OpenGL/libGLESv2/utilities.h
@@ -23,8 +23,6 @@
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
-#include <GL/glcorearb.h>
-#include <GL/glext.h>
 
 #include <string>