CC              = clang
CFLAGS          = -Wall -std=c89 -D _DEFAULT_SOURCE
LDFLAGS         = -lm
BUILDDIR        = build
SOURCEDIR       = src
OBJECTDIR       = obj

OUTPUT          = dns

SRCS = $(wildcard $(SOURCEDIR)/*.c)
OBJS = $(SRCS:.c=.o)
OBJ  = $(OBJS:$(SOURCEDIR)/%=$(OBJECTDIR)/%)

build: dir $(OBJ)
	@echo [LD] $(OBJ)
	@$(CC) $(CFLAGS) -o $(BUILDDIR)/$(OUTPUT) $(OBJ) $(LDFLAGS)

debug: CFLAGS += -g -D _DEBUG
debug: build;

test: CFLAGS += -D _TEST
test: clean debug
	$(BUILDDIR)/$(OUTPUT)

dir:
	@mkdir -p $(OBJECTDIR)
	@mkdir -p $(BUILDDIR)

$(OBJECTDIR)/%.o: $(SOURCEDIR)/%.c
	@echo [CC] $<
	@$(CC) $(CFLAGS) -c $< -o $@

#sudo setcap 'cap_net_bind_service=+ep' /path/to/prog
#to allow port access
run: build
	$(BUILDDIR)/$(OUTPUT)

.PHONY: clean
clean:
	@echo [RM] $(OBJ)
	@echo [RM] $(BUILDDIR)/$(OUTPUT)
	@rm -df  $(OBJ)
	@rm -Rdf $(BUILDDIR) $(OBJECTDIR)

.PHONY: all
all: clean build