makefile.txt

CXX = g++
CXXFLAGS = -std=c++17 -O3 -Wall -Wextra -pedantic
DEBUG_FLAGS = -g -DDEBUG

TARGETS = orderbook_processor stream_generator
BUILD_DIR = build

.PHONY: all clean test debug benchmark

all: $(BUILD_DIR) $(addprefix $(BUILD_DIR)/, $(TARGETS))

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

$(BUILD_DIR)/orderbook_processor: orderbook_processor.cpp
	$(CXX) $(CXXFLAGS) -o $@ $<

$(BUILD_DIR)/stream_generator: stream_generator.cpp
	$(CXX) $(CXXFLAGS) -o $@ $<

debug: CXXFLAGS += $(DEBUG_FLAGS)
debug: clean all

clean:
	rm -rf $(BUILD_DIR)

# Generate test files
test-data: all
	@echo "Generating test data files..."
	@$(BUILD_DIR)/stream_generator $(BUILD_DIR)/input1.bin
	@$(BUILD_DIR)/stream_generator $(BUILD_DIR)/large_1mb.bin 1
	@$(BUILD_DIR)/stream_generator $(BUILD_DIR)/large_2mb.bin 2
	@echo "Test data generated in $(BUILD_DIR)/"

# Run basic test
test: all test-data
	@echo "Running basic test..."
	@cat $(BUILD_DIR)/input1.bin | $(BUILD_DIR)/orderbook_processor 5
	@echo "\nTest completed!"

# Run benchmark tests
benchmark: all test-data
	@echo "=== Benchmark Tests ==="
	@echo "\n1MB file (depth=5):"
	@time cat $(BUILD_DIR)/large_1mb.bin | $(BUILD_DIR)/orderbook_processor 5 > /dev/null
	@echo "\n2MB file (depth=10):"
	@time cat $(BUILD_DIR)/large_2mb.bin | $(BUILD_DIR)/orderbook_processor 10 > /dev/null
	@echo "\n2MB file (depth=20):"
	@time cat $(BUILD_DIR)/large_2mb.bin | $(BUILD_DIR)/orderbook_processor 20 > /dev/null

# Validate output against expected
validate: all test-data
	@echo "Validating output..."
	@cat $(BUILD_DIR)/input1.bin | $(BUILD_DIR)/orderbook_processor 5 > $(BUILD_DIR)/actual.log
	@if diff -w output1.log $(BUILD_DIR)/actual.log > /dev/null 2>&1; then \
		echo "✓ Output matches expected!"; \
	else \
		echo "✗ Output differs from expected"; \
		diff -w output1.log $(BUILD_DIR)/actual.log; \
	fi

# Help target
help:
	@echo "Available targets:"
	@echo "  make              - Build all executables"
	@echo "  make clean        - Remove build directory"
	@echo "  make test         - Generate test data and run basic test"
	@echo "  make test-data    - Generate test stream files"
	@echo "  make benchmark    - Run performance benchmarks"
	@echo "  make validate     - Validate output against expected"
	@echo "  make debug        - Build with debug symbols"
	@echo "  make help         - Show this help message"