--- xvt-1.0/Makefile.orig	2009-09-04 15:45:08.000000000 +0200
+++ xvt-1.0/Makefile	2009-09-04 15:46:00.000000000 +0200
@@ -27,7 +27,7 @@
 #ARCH=AIX3
 #ARCH=ULTRIX
 #ARCH=HPUX
-#ARCH=LINUX
+ARCH=LINUX
 #
 #
 # If this line is uncommented then `Make config' will unclude several options
@@ -107,7 +107,7 @@
 OBJ=xvt.o xsetup.o command.o screen.o sbar.o ttyinit.o
 SRC=xvt.c xsetup.c command.c screen.c sbar.c ttyinit.c
 #
-CFLAGS=-O $(INCLUDE) $(OPTIONS) $(DEFS) -D$(ARCH)
+CFLAGS+= $(INCLUDE) $(OPTIONS) $(DEFS) -D$(ARCH)
 #
 xvt: $(OBJ)
 	$(CC) $(LDFLAGS) -o xvt $(OBJ) $(LIB) -lX11