commit 08dadaf3f345f3feceefaacebf5045c72821b449
Author: Simon Richter <Simon.Richter@hogyros.de>
Date:   Tue Apr 2 15:11:01 2013 +0200

    "Implement" clGetExtensionFunctionAddress()
    
    This function can legally return NULL in the current implementation.

Index: beignet-0.1/src/cl_api.c
===================================================================
--- beignet-0.1.orig/src/cl_api.c	2013-05-14 19:58:53.994049731 +0200
+++ beignet-0.1/src/cl_api.c	2013-05-14 19:59:18.822048624 +0200
@@ -1169,7 +1169,7 @@
 void*
 clGetExtensionFunctionAddress(const char *func_name)
 {
-  NOT_IMPLEMENTED;
+  /* No extensions supported at present */
   return NULL;
 }
 
