diff -urN nkf204.orig/Makefile nkf204/Makefile
--- nkf204.orig/Makefile	2004-01-02 15:08:21.000000000 +0900
+++ nkf204/Makefile	2004-04-26 11:33:59.275232000 +0900
@@ -1,5 +1,5 @@
-CC = cc
-CFLAGS = -O
+CC = gcc
+CFLAGS = -O3
 # CFLAGS = -O3
 SHAR = shar 
 # SHAR = shar -T