-#
-# Copyright (c) 1987 The Regents of the University of California.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms are permitted
-# provided that the above copyright notice and this paragraph are
-# duplicated in all such forms and that any documentation,
-# advertising materials, and other materials related to such
-# distribution and use acknowledge that the software was developed
-# by the University of California, Berkeley. The name of the
-# University may not be used to endorse or promote products derived
-# from this software without specific prior written permission.
-# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
-# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-# WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-#
-# @(#)Makefile 5.3 (Berkeley) %G%
-#
-COMMON= ../common_source
-CFLAGS= -O -I. -I${COMMON}
-YFLAGS= -d
-VPATH= ${COMMON}
-LIBC= /lib/libc.a
-SRCS= e.c diacrit.c eqnbox.c font.c fromto.c funny.c glob.c integral.c \
- io.c lex.c lookup.c mark.c matrix.c move.c over.c paren.c pile.c \
- shift.c size.c sqrt.c text.c
-OBJS= e.o diacrit.o eqnbox.o font.o fromto.o funny.o glob.o integral.o \
- io.o lex.o lookup.o mark.o matrix.o move.o over.o paren.o pile.o \
- shift.o size.o sqrt.o text.o
-MAN= eqn.0
-
-all: eqn
-
-eqn: ${OBJS} ${LIBC}
- ${CC} -o $@ ${CFLAGS} ${OBJS}
-
-eqn.0:
- eqn eqn.1 | nroff -h -man > $@
-
-e.c: ${COMMON}/e.y
- ${YACC} ${YFLAGS} ${COMMON}/e.y
- mv y.tab.h e.def
+# @(#)Makefile 5.4 (Berkeley) %G%
+
+PROG= eqn
+CFLAGS+=-I. -I${.CURDIR}/../common_source
+SRCS= diacrit.c eqnbox.c font.c fromto.c funny.c glob.c integral.c io.c \
+ lex.c lookup.c mark.c matrix.c move.c over.c paren.c pile.c shift.c \
+ size.c sqrt.c text.c
+OBJS+= e.o
+.PATH: ${.CURDIR}/../common_source
+YFLAGS+=-d
+MLINKS= eqn.1 checkeq.1 eqn.1 neqn.1
+CLEANFILES+=e.c y.tab.h
+
+e.c:
+ ${YACC} ${YFLAGS} ${.CURDIR}/../common_source/e.y