diff -urN RC13-git7-kconfig/Makefile RC13-git7-CHECKFLAGS/Makefile
--- RC13-git7-kconfig/Makefile	2005-09-07 13:54:44.000000000 -0400
+++ RC13-git7-CHECKFLAGS/Makefile	2005-09-07 13:54:46.000000000 -0400
@@ -333,7 +333,7 @@
 PERL		= perl
 CHECK		= sparse
 
-CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__
+CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ $(CF)
 MODFLAGS	= -DMODULE
 CFLAGS_MODULE   = $(MODFLAGS)
 AFLAGS_MODULE   = $(MODFLAGS)