Import new m4 from OpenBSD.

usr.bin/m4/Makefile

@@ -1,10 +1,24 @@
-#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+#	$OpenBSD: Makefile,v 1.11 2004/05/12 21:17:03 espie Exp $
 
 # -DEXTENDED 
 # 	if you want the paste & spaste macros.
 
 PROG=	m4
-CFLAGS+=-DEXTENDED
-SRCS=	eval.c expr.c look.c main.c misc.c
+CFLAGS+=-DEXTENDED -I.
+CDIAGFLAGS=-W -Wall -Wstrict-prototypes -pedantic \
+	-Wno-unused -Wno-char-subscripts -Wno-sign-compare
+
+LDADD= -ly -ll
+DPADD= ${LIBY} ${LIBL}
+
+SRCS=	eval.c expr.c look.c main.c misc.c gnum4.c trace.c tokenizer.l parser.y
+MAN=	m4.1
+
+parser.c parser.h: parser.y
+	${YACC} -d ${.ALLSRC} && mv y.tab.c parser.c && mv y.tab.h parser.h
+
+tokenizer.o: parser.h
+
+CLEANFILES+=parser.c parser.h tokenizer.o
 
 .include <bsd.prog.mk>