--- src/glsl/Makefile.orig	2011-01-27 19:41:15.050361877 +0100
+++ src/glsl/Makefile	2011-01-27 19:36:01.270361877 +0100
@@ -178,6 +178,6 @@
 
 builtin_function.cpp: builtins/profiles/* builtins/ir/* builtins/tools/generate_builtins.py builtins/tools/texture_builtins.py builtin_compiler
 	@echo Regenerating builtin_function.cpp...
-	$(PYTHON2) $(PYTHON_FLAGS) builtins/tools/generate_builtins.py $(PWD)/builtin_compiler > builtin_function.cpp
+	$(PYTHON2) $(PYTHON_FLAGS) builtins/tools/generate_builtins.py $(CURDIR)/builtin_compiler > builtin_function.cpp
 
 -include depend