Make it work for both elf and a.out

sbin/fdisk/mbr/Makefile

@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.2 1999/02/13 02:54:33 lukem Exp $
+#	$NetBSD: Makefile,v 1.3 1999/03/24 16:02:41 christos Exp $
 
 BINDIR=	/usr/mdec
 BINMODE=444
@@ -9,10 +9,18 @@ PROG=	mbr
 SRCS=	mbr.S
 MKMAN=	no
 
+.include <bsd.own.mk>
+
+.if ${OBJECT_FMT} == "ELF"
+LDFLAGS+= -e start
+.else
+LDFLAGS+= -e _start -N
+.endif
+
 ${PROG}: ${OBJS}
-	${LD} -o ${PROG}.tmp -e _start -N -Ttext 0x600 ${OBJS}
+	${LD} -o ${PROG}.tmp ${LDFLAGS} -Ttext 0x600 ${OBJS}
 	${STRIPPROG} ${PROG}.tmp
-	dd if=${PROG}.tmp of=${PROG} bs=32 skip=1
+	objcopy -O binary ${PROG}.tmp ${PROG}
 	rm -f ${PROG}.tmp
 
 .include <bsd.prog.mk>