CC = gcc
LEX = flex
YAXX = bison

CFLAGS = -Wall -Wextra -std=c11 -g -I. -D_GNU_SOURCE
LDFLAGS = -lfl

ifneq ($(DEBUG),)
	CFLAGS += -DDEBUG=$(value DEBUG)
endif

ifeq ($(shell uname), Darwin)
	LDFLAGS += -L/usr/local/opt/flex/lib
	CFLAGS += -I/usr/local/opt/flex/include
endif

TARGET = ccomp

.PHONY: all clean

all: $(TARGET)

clean:
	rm -f $(TARGET) *.o
	rm -rf bison-out


bison-out/y.tab.c bison-out/y.tab.h: c.y
	@mkdir -p bison-out
	bison -d -b bison-out/y c.y

bison-out/lex.yy.c: c.l
	@mkdir -p bison-out
	flex -o bison-out/lex.yy.c c.l

$(TARGET): $(wildcard *.c) $(wildcard *.h) bison-out/y.tab.c bison-out/lex.yy.c
	$(CC) $(CFLAGS) $(filter %.c,$^) $(LDFLAGS) -o $@