feat(build): 添加 CMakeLists.txt 跨平台构建配置

- 自动检测 Windows/POSIX 平台
- Windows 下链接 ws2_32、查找 brotlienc
- POSIX 下使用 pkgconfig 查找 zlib、libbrotlienc
- 支持 MinGW 和 MSVC 编译器
- 包含安装规则

CMakeLists.txt

@@ -0,0 +1,150 @@
+# Cocoon - 跨平台构建配置
+#
+# 支持 Linux 和 Windows 构建。
+# 自动检测平台并选择正确的编译选项和链接库。
+#
+# 使用方式:
+#   mkdir build && cd build
+#   cmake ..
+#   make  # Linux
+#   cmake --build .  # Windows (MSBuild / Ninja)
+#
+# @author xfy
+
+cmake_minimum_required(VERSION 3.10)
+project(cocoon C)
+
+# 设置 C 标准
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD_REQUIRED ON)
+
+# 源文件列表
+set(COCOON_SOURCES
+    main.c
+    server.c
+    http.c
+    static.c
+    log.c
+    config.c
+    multipart.c
+    platform.c
+)
+
+# 头文件路径
+set(COCOON_INCLUDE_DIRS
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/coco/include
+)
+
+# === 平台检测 ===
+if(WIN32)
+    # Windows 构建
+    message(STATUS "平台: Windows")
+    
+    add_definitions(-DWIN32_LEAN_AND_MEAN)
+    
+    # 编译选项
+    add_compile_options(
+        /W4
+        /O2
+        $<$<CONFIG:Debug>:/Zi>
+    )
+    
+    # 链接库
+    set(COCOON_LIBS ws2_32)
+    
+    # 静态运行时（可选，避免 MSVC 运行时依赖）
+    # set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+    
+else()
+    # Linux / macOS 构建
+    message(STATUS "平台: POSIX (Linux/macOS)")
+    
+    # 编译选项
+    add_compile_options(
+        -Wall
+        -Wextra
+        -O2
+        -D_GNU_SOURCE
+    )
+    
+    # 调试模式
+    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+        add_compile_options(-g -O0 -DCOCOON_DEBUG)
+    endif()
+    
+    # 链接库
+    find_package(Threads REQUIRED)
+    set(COCOON_LIBS
+        Threads::Threads
+        m
+        z
+    )
+    
+    # 可选：liburing（Linux 5.1+）
+    find_library(URING_LIB uring)
+    if(URING_LIB)
+        message(STATUS "找到 liburing，启用 io_uring 支持")
+        list(APPEND COCOON_LIBS ${URING_LIB})
+    else()
+        message(STATUS "未找到 liburing，跳过 io_uring 支持")
+    endif()
+    
+    # Brotli 压缩库
+    find_library(BROTLI_LIB brotlienc)
+    if(BROTLI_LIB)
+        list(APPEND COCOON_LIBS ${BROTLI_LIB})
+    else()
+        message(WARNING "未找到 brotlienc 库，Brotli 压缩将不可用")
+    endif()
+endif()
+
+# === 目标定义 ===
+add_executable(cocoon ${COCOON_SOURCES})
+
+target_include_directories(cocoon PRIVATE ${COCOON_INCLUDE_DIRS})
+
+# coco 库依赖（优先使用 submodule）
+set(COCO_DIR "${CMAKE_CURRENT_SOURCE_DIR}/coco" CACHE PATH "coco 库路径")
+
+if(EXISTS "${COCO_DIR}/CMakeLists.txt")
+    message(STATUS "使用 coco submodule: ${COCO_DIR}")
+    add_subdirectory(${COCO_DIR} ${CMAKE_BINARY_DIR}/coco)
+    target_link_libraries(cocoon PRIVATE coco ${COCOON_LIBS})
+else()
+    message(STATUS "未找到 coco 子模块，假设已预编译")
+    # 假设 coco 已预编译并可通过 find_library 找到
+    # target_link_libraries(cocoon PRIVATE ${COCOON_LIBS})
+endif()
+
+# === 安装规则 ===
+install(TARGETS cocoon DESTINATION bin)
+
+# === 测试支持 ===
+enable_testing()
+
+# 集成测试
+find_program(BASH_EXECUTABLE bash)
+if(BASH_EXECUTABLE)
+    add_test(
+        NAME integration_test
+        COMMAND ${BASH_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/tests/integration_test.sh
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    )
+endif()
+
+# 单元测试（Unity 框架）
+set(UNIT_TESTS test_server test_http test_static test_log test_config test_multipart)
+
+foreach(test_name ${UNIT_TESTS})
+    set(test_src "${CMAKE_CURRENT_SOURCE_DIR}/tests/unit/${test_name}.c")
+    if(EXISTS ${test_src})
+        add_executable(${test_name} ${test_src} ${COCOON_SOURCES} ${CMAKE_CURRENT_SOURCE_DIR}/tests/unity/unity.c)
+        target_include_directories(${test_name} PRIVATE
+            ${CMAKE_CURRENT_SOURCE_DIR}
+            ${CMAKE_CURRENT_SOURCE_DIR}/tests/unity
+        )
+        target_link_libraries(${test_name} PRIVATE ${COCOON_LIBS})
+        add_test(NAME ${test_name} COMMAND ${test_name})
+    endif()
+endforeach()