TARGET := dns-keeper
SRC_DIR := src
BUILD_DIR := build

CC := gcc
CFLAGS := -O2 -Wall -Wextra -ffunction-sections -fdata-sections -flto
CFLAGS += $(shell pkg-config --cflags libcurl)

ifeq ($(STATIC),1)
LDFLAGS := -Wl,--gc-sections -Wl,-s -flto -static \
           $(shell pkg-config --static --libs libcurl) -lcjson -lpthread
else
LDFLAGS := -Wl,--gc-sections -Wl,-s -flto \
           $(shell pkg-config --libs libcurl) -lcjson -lpthread
endif

SRCS := $(wildcard $(SRC_DIR)/*.c)
OBJS := $(patsubst $(SRC_DIR)/%.c, $(BUILD_DIR)/%.o, $(SRCS))

.PHONY: all clean

all: $(BUILD_DIR)/$(TARGET)

$(BUILD_DIR)/$(TARGET): $(OBJS)
	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)

$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c | $(BUILD_DIR)
	$(CC) $(CFLAGS) -c $< -o $@

$(BUILD_DIR):
	mkdir -p $(BUILD_DIR)

clean:
	rm -rf $(BUILD_DIR)