--- extconf.rb.orig	2003-09-27 07:59:45.000000000 +0900
+++ extconf.rb	2004-03-20 03:58:22.090782672 +0900
@@ -52,10 +52,10 @@
 windows=mswin32||cygwin
 unix=!windows
 
-$CFLAGS+="-funroll-loops " if !mswin32
+$CFLAGS+=" -funroll-loops " if !mswin32
 
-$CFLAGS+="-Wall " if unix||cygwin
-$CPPFLAGS+="-GX " if mswin32
+$CFLAGS+=" -Wall " if unix||cygwin
+$CPPFLAGS+=" -GX " if mswin32
 
 if unix
 	$CFLAGS += `#{sdl_config} --cflags`.chomp