CC = gcc
CFLAGS = -Wall -g -c -std=gnu99
LDFLAGS = -lm
BUILD_DIR = build
COMMON_OBJ_FILES = $(patsubst %.c,$(BUILD_DIR)/%.o,$(wildcard common/*.c))
CLIENT_OBJ_FILES = $(patsubst %.c,$(BUILD_DIR)/%.o,$(wildcard client/*.c))
SERVER_OBJ_FILES = $(patsubst %.c,$(BUILD_DIR)/%.o,$(wildcard server/*.c))

.PHONY: all clean

all: http_client http_server

clean:
	rm -rf $(BUILD_DIR)
	rm -f http_client
	rm -f http_server

http_client: $(BUILD_DIR)/client $(BUILD_DIR)/common $(COMMON_OBJ_FILES) $(CLIENT_OBJ_FILES)
	$(CC) -o $@ $(LDFLAGS) $(filter-out $(BUILD_DIR)/common $(BUILD_DIR)/client,$^)

http_server: $(BUILD_DIR)/server $(BUILD_DIR)/common $(COMMON_OBJ_FILES) $(SERVER_OBJ_FILES)
	$(CC) -o $@ $(LDFLAGS) $(filter-out $(BUILD_DIR)/common $(BUILD_DIR)/server,$^)

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

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

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

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

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