--- linux-2.6.39/GNUmakefile
+++ linux-2.6.39/GNUmakefile
@@ -22,14 +22,6 @@
 endif
 export _kernelvariables_read := 1
 -include $(kernelvariables)
-
-# Iff /GU/tmp/ is not available and CCACHE_DISABLE is not set, disable ccache
-ifeq ($(wildcard /GU/tmp/)$(CCACHE_DISABLE),)
-ifneq (,$(V))
-$(info /GU/tmp is not available, disabling ccache)
-endif
-export CCACHE_DISABLE = true
-endif
 endif
 
 # Prevent accidental influence of user space targeted settings in standard