Makefile

# Compiler and flags
CXX := g++
CXXFLAGS := -Wall -Werror -Wextra -pedantic
CXXFLAGS += -std=c++20 -ggdb
CXXFLAGS += -pipe -O2
CXXFLAGS += -MMD -MP

# Directories
SRC_DIR := src
BUILD_DIR := build
INCLUDE_DIR := include
PROTOBUF_DIR := protobuf

# Create necessary directories
$(shell mkdir -p $(BUILD_DIR) $(BUILD_DIR)/protobuf)

# Source files
SRCS := $(wildcard $(SRC_DIR)/*.cc)
OBJS := $(SRCS:$(SRC_DIR)/%.cc=$(BUILD_DIR)/%.o)
DEPS := $(OBJS:.o=.d)

# Protobuf files
PROTO_SRC := $(PROTOBUF_DIR)/chord.proto
PROTO_CC := $(BUILD_DIR)/protobuf/chord.pb.cc
PROTO_H := $(BUILD_DIR)/protobuf/chord.pb.h
PROTO_OBJ := $(PROTO_CC:.cc=.o)

# Include directories and libraries
INCLUDES := -I$(INCLUDE_DIR) -I$(BUILD_DIR)
INCLUDES += $(shell pkg-config --cflags protobuf)
LDFLAGS := $(shell pkg-config --libs protobuf)
LDLIBS := -lprotobuf -lcrypto

# Target executable
TARGET := chord

# Default target
all: $(TARGET)

# Link the final executable
$(TARGET): $(PROTO_OBJ) $(OBJS) 
	@echo "Linking $@..."
	@$(CXX) $(OBJS) $(PROTO_OBJ) $(LDFLAGS) $(LDLIBS) -o $@

# Compile source files
$(BUILD_DIR)/%.o: $(SRC_DIR)/%.cc
	@echo "Compiling $<..."
	@$(CXX) $(CXXFLAGS) $(INCLUDES) -c $< -o $@

# Generate and compile protobuf files
$(PROTO_CC) $(PROTO_H): $(PROTO_SRC)
	@echo "Generating protobuf files..."
	@protoc --cpp_out=$(BUILD_DIR)/protobuf -I$(PROTOBUF_DIR) $<

$(PROTO_OBJ): $(PROTO_CC)
	@echo "Compiling protobuf..."
	@$(CXX) $(CXXFLAGS) $(INCLUDES) -c $< -o $@

# Clean build artifacts
clean:
	@echo "Cleaning..."
	@rm -rf $(BUILD_DIR) $(TARGET)

# Deep clean (including generated protobuf files)
distclean: clean
	@echo "Deep cleaning..."
	@rm -rf $(PROTOBUF_DIR)/*.pb.*

# Include dependency files
-include $(DEPS)

# Phony targets
.PHONY: all clean distclean

# Build info target
info:
	@echo "Compiler: $(CXX)"
	@echo "Flags: $(CXXFLAGS)"
	@echo "Include dirs: $(INCLUDES)"
	@echo "Libraries: $(LDLIBS)"
	@echo "Source files: $(SRCS)"

.PHONY: info