2 files changed, 13 insertions, 6 deletions
diff --git a/make/stub_includes/opengl/GLES2/gl2.h b/make/stub_includes/opengl/GLES2/gl2.h
index 9c68b1e7a..44338000e 100755
--- a/make/stub_includes/opengl/GLES2/gl2.h
+++ b/make/stub_includes/opengl/GLES2/gl2.h
@@ -99,8 +99,7 @@ typedef int             GLclampx;
 typedef int             GLintptr;
 typedef int             GLsizeiptr;
 
-/* OpenGL ES core versions */
-#define GL_ES_VERSION_2_0                 1
+#ifndef GL_ES_VERSION_2_0
 
 /* ClearBufferMask */
 #define GL_DEPTH_BUFFER_BIT               0x00000100
@@ -532,10 +531,14 @@ typedef int             GLsizeiptr;
 
 #define GL_INVALID_FRAMEBUFFER_OPERATION  0x0506
 
+#endif /* GL_ES_VERSION_2_0 */
+
 /*-------------------------------------------------------------------------
  * GL core functions.
  *-----------------------------------------------------------------------*/
 
+#ifndef GL_ES_VERSION_2_0
+#define GL_ES_VERSION_2_0   1
 GL_APICALL void         GL_APIENTRY glActiveTexture (GLenum texture);
 GL_APICALL void         GL_APIENTRY glAttachShader (GLuint program, GLuint shader);
 GL_APICALL void         GL_APIENTRY glBindAttribLocation (GLuint program, GLuint index, const char* name);
@@ -678,6 +681,7 @@ GL_APICALL void         GL_APIENTRY glVertexAttrib4f (GLuint indx, GLfloat x, GL
 GL_APICALL void         GL_APIENTRY glVertexAttrib4fv (GLuint indx, const GLfloat* values);
 GL_APICALL void         GL_APIENTRY glVertexAttribPointer (GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr);
 GL_APICALL void         GL_APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);
+#endif /* GL_ES_VERSION_2_0 */
 
 #ifdef __cplusplus
 }
diff --git a/make/stub_includes/opengl/GLES2/gl2ext.h b/make/stub_includes/opengl/GLES2/gl2ext.h
index 8580e2bdf..e3bbede8a 100755
--- a/make/stub_includes/opengl/GLES2/gl2ext.h
+++ b/make/stub_includes/opengl/GLES2/gl2ext.h
@@ -61,9 +61,7 @@ extern "C" {
 
 #define GL_NVIDIA_PLATFORM_BINARY_NV                            0x890B
 
-#define GL_OES_EGL_image                  1
-
-#ifdef GL_OES_EGL_image
+#ifndef GL_OES_EGL_image
 /** sgothel: wrong defines and/or numbers:
  *
 #define GL_TEXTURE_2D_OES                     0x1
@@ -76,12 +74,17 @@ extern "C" {
 #define GL_RENDERBUFFER_OES                   0x9
 #define GL_TEXTURE_RECTANGLE_NV_OES           0xb
  */
+#endif /*  GL_OES_EGL_image */
 
+#ifndef GL_OES_EGL_image
 typedef void *GLeglImageOES;
+#endif /*  GL_OES_EGL_image */
+
+#ifndef GL_OES_EGL_image
+#define GL_OES_EGL_image                  1
 GL_APICALL void GL_APIENTRY glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image);
 #ifdef GL_GLEXT_PROTOTYPES
 typedef void  (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
-
 #endif
 #endif