# Makefile for fscan-lite
# 极简但完整的跨平台构建脚本
# 目标：最大兼容性，支持古老的make版本

# 编译器和标志
CC = gcc
CFLAGS = -std=c89 -Wall -O2
LDFLAGS = 
LIBS = 

# 平台检测
UNAME_S := $(shell uname -s 2>/dev/null || echo Windows)

# Windows平台配置
ifeq ($(OS),Windows_NT)
    PLATFORM = windows
    EXT = .exe
    LIBS = -lws2_32
    RM = del /Q
    MKDIR = mkdir
    PATHSEP = \\
else
    # Unix-like系统配置
    PLATFORM = unix
    EXT = 
    LIBS = -lpthread
    RM = rm -f
    MKDIR = mkdir -p
    PATHSEP = /
    
    # Linux特定配置
    ifeq ($(UNAME_S),Linux)
        PLATFORM = linux
    endif
    
    # macOS特定配置
    ifeq ($(UNAME_S),Darwin)
        PLATFORM = macos
    endif
endif

# 目录和文件
SRCDIR = src
INCDIR = include  
BINDIR = bin
TARGET = $(BINDIR)$(PATHSEP)fscan-lite$(EXT)

# 源文件
SOURCES = $(SRCDIR)/main.c $(SRCDIR)/scanner.c $(SRCDIR)/platform.c
OBJECTS = main.o scanner.o platform.o

# 默认目标
all: $(TARGET)

# 创建输出目录
$(BINDIR):
	$(MKDIR) $(BINDIR)

# 主要构建目标
$(TARGET): $(BINDIR) $(OBJECTS)
	$(CC) $(LDFLAGS) -o $@ $(OBJECTS) $(LIBS)
	@echo "Build completed: $@"

# 目标文件编译规则
main.o: $(SRCDIR)/main.c
	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@

scanner.o: $(SRCDIR)/scanner.c  
	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@

platform.o: $(SRCDIR)/platform.c
	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@

# 静态编译目标
static: LDFLAGS += -static
static: CFLAGS += -DSTATIC_BUILD
static: $(TARGET)
	@echo "Static build completed"

# 最小化编译（体积优化）
small: CFLAGS = -std=c89 -Os -ffunction-sections -fdata-sections -DSTATIC_BUILD
small: LDFLAGS = -static -s -Wl,--gc-sections
small: $(TARGET)
	@echo "Minimal build completed"

# 调试版本
debug: CFLAGS += -g -DDEBUG
debug: $(TARGET)
	@echo "Debug build completed"

# 测试目标
test: $(TARGET)
	@echo "Running basic tests..."
	$(TARGET) --version
	$(TARGET) --help
	@echo "Basic tests completed"

# 清理
clean:
	$(RM) *.o
	$(RM) $(TARGET)

# 完全清理（包括目录）
distclean: clean
ifeq ($(OS),Windows_NT)
	if exist $(BINDIR) rmdir /S /Q $(BINDIR)
else
	rm -rf $(BINDIR)
endif

# 安装（简单复制到系统路径）
install: $(TARGET)
ifeq ($(OS),Windows_NT)
	@echo "Manual installation required on Windows"
	@echo "Copy $(TARGET) to desired location"
else
	install -m 755 $(TARGET) /usr/local/bin/
	@echo "Installed to /usr/local/bin/"
endif

# 显示构建信息
info:
	@echo "Build information:"
	@echo "  Platform: $(PLATFORM)"
	@echo "  Compiler: $(CC)"
	@echo "  CFLAGS: $(CFLAGS)"
	@echo "  LIBS: $(LIBS)"
	@echo "  Target: $(TARGET)"

# 帮助信息
help:
	@echo "Available targets:"
	@echo "  all      - Build normal version (default)"
	@echo "  static   - Build static linked version"
	@echo "  small    - Build minimal size version"  
	@echo "  debug    - Build debug version"
	@echo "  test     - Run basic tests"
	@echo "  clean    - Remove object files and binary"
	@echo "  distclean- Remove all generated files"
	@echo "  install  - Install to system (Unix only)"
	@echo "  info     - Show build configuration"
	@echo "  help     - Show this help"

# 声明伪目标
.PHONY: all static small debug test clean distclean install info help