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# Default target: run bcalc and show the pdf
show: bcalc
	./bcalc
	dot -Tpdf bcalc.dot > bcalc.pdf
	evince bcalc.pdf &> /dev/null &

CXX = g++

# Dependencies
bcalc.yy.o: %.yy.o: %.tab.hpp
bcalc.tab.o: %.o: %.hpp
bcalc.yy.o bcalc.tab.o: parsetree.hpp

# Rules to generate the final compiled parser programs
bcalc: %: %.tab.o %.yy.o
	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $@ $^

# Generic rule for compiling C++ programs from source
# (Actually, make also defines this by default.)
%.o: %.cpp
	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $<

# Generic rule for running C++-style flex code generation
# For instance, this will make 'pat.yy.cpp' from 'pat.lpp'.
%.yy.cpp: %.lpp
	flex -o $@ $<

# Generic rule for bison code generation
%.tab.cpp %.tab.hpp: %.ypp
	bison -d $<

.PHONY: clean show
clean:
	rm -f *.o *.yy.cpp *.tab.* bcalc bcalc.dot bcalc.pdf