# Example taken from General Programming 
#      Concepts: Writing and Debugging Programs
# For usage details, see:
# http://www.mor.itesm.mx/AIX/en_US/a_doc_lib/aixprggd/genprogc/ie_prog_4lex_yacc.htm

CXX = gcc

calc:	y.tab.c lex.yy.c
	$(CXX) -o calc y.tab.c lex.yy.c -ll

y.tab.c:	calc.y
	yacc -d calc.y

lex.yy.c:	calc.l
	lex calc.l

clean:
	rm lex.yy.c y.tab.c y.tab.h calc