--- Makefile_bootstrap.orig	2011-10-06 21:17:51.000000000 +0800
+++ Makefile_bootstrap	2011-10-06 21:18:13.000000000 +0800
@@ -78,7 +78,7 @@
 
 BOOTSTRAP1=1
 ifdef BOOTSTRAP1
-ATSCCFLAGS=-I$(ATSHOMEQ) -I$(ATSRUNTIME) -O2 -g
+ATSCCFLAGS=-I$(ATSHOMEQ) -I$(ATSRUNTIME) $(CFLAGS)
 endif
 
 LIBGMP=