# Makefile

OBJS	= bison.o lex.o main.o

CC	= g++
CFLAGS	= -g -Wall -ansi -pedantic

calculator:		$(OBJS)
		$(CC) $(CFLAGS) $(OBJS) -o calculator -lfl

lex.o:		lex.c
		$(CC) $(CFLAGS) -c lex.c -o lex.o

lex.c:		calculator.lex 
		flex calculator.lex
		cp lex.yy.c lex.c

bison.o:	bison.c
		$(CC) $(CFLAGS) -c bison.c -o bison.o

bison.c:	calculator.y
		bison -d -v calculator.y
		cp calculator.tab.c bison.c
		cmp -s calculator.tab.h tok.h || cp calculator.tab.h tok.h

main.o:		main.cpp
		$(CC) $(CFLAGS) -c main.cpp -o main.o

lex.o yac.o main.o	: calculator.h
lex.o main.o		: tok.h

clean:
	rm -f *.o *~ lex.c lex.yy.c bison.c tok.h calculator.tab.c calculator.tab.h calculator.output calculator