BUILDDIR = build
TARGET_SRC = main

build: mkdir main
all: mkdir main run

mkdir:	# create build directory
	mkdir -p $(BUILDDIR)

run:	# run binary
	./$(BUILDDIR)/main

main: lex.yy.c
	cc $(BUILDDIR)/lex.yy.c -o $(BUILDDIR)/$(TARGET_SRC) -lfl

# generate c file for lex
lex.yy.c:
	flex -o $(BUILDDIR)/lex.yy.c $(TARGET_SRC).l

clean: # wipe the build directory
	rm -f $(BUILDDIR)/*