初始化项目
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BBIT-Kai
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# 最低CMake版本要求：3.21 以上才支持 RUNTIME_DEPENDENCIES install 功能（自动部署 vcpkg so）
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cmake_minimum_required(VERSION 3.21)
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# =====================================================
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# Toolchain (vcpkg)
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# =====================================================
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# 告诉CMake使用vcpkg作为依赖管理
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# 所有 find_package(... CONFIG) 会优先搜索 vcpkg 提供的库
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set(CMAKE_TOOLCHAIN_FILE
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$ENV{HOME}/vcpkg/scripts/buildsystems/vcpkg.cmake
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CACHE STRING "Vcpkg toolchain file")
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# =====================================================
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# Project定义
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# =====================================================
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project(sentinel-app LANGUAGES CXX)
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# =====================================================
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# 全局构建配置
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# =====================================================
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# 使用C++17标准
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set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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# 对生成的库启用位置无关代码（PIE / PIC）
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set(CMAKE_POSITION_INDEPENDENT_CODE ON)
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# =====================================================
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# 平台检测 执行命令获取目标机器架构
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# =====================================================
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execute_process(
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COMMAND gcc -dumpmachine
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OUTPUT_VARIABLE TARGET_DEVICE
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# 如果是 aarch64 (Jetson / Tegra)，定义宏 PLATFORM_TEGRA
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if(TARGET_DEVICE MATCHES "aarch64")
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add_compile_definitions(PLATFORM_TEGRA)
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endif()
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# =====================================================
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# 依赖库
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# =====================================================
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# pkg-config 必须，用来查询系统库的编译/链接参数
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find_package(PkgConfig REQUIRED)
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# vcpkg 管理的库（现代CMake target）
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find_package(miniocpp CONFIG REQUIRED) # minio C++ SDK
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find_package(yaml-cpp CONFIG REQUIRED) # yaml parser
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# ========================
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# 系统库 / NVIDIA stack
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# ========================
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pkg_check_modules(GST REQUIRED gstreamer-1.0) # gstreamer 头文件与库
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pkg_check_modules(UUID REQUIRED uuid) # uuid 库
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# =====================================================
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# 主可执行文件
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# =====================================================
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add_executable(sentinel-app
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src/app.cpp
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src/service/vehicle_event_service.cpp
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src/service/rtsp_grabber.cpp
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src/utils/ds_yml_parse.cpp
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src/utils/my_utils.cpp
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)
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# 编译选项
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target_compile_options(sentinel-app
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PRIVATE
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-Wall # 打开所有警告
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-Werror # 警告当作错误
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-Wno-unused-function # 忽略未使用函数警告
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)
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# 包含目录
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target_include_directories(sentinel-app
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PRIVATE
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src # 自己的源码目录
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src/service
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src/utils
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${GST_INCLUDE_DIRS} # gstreamer include
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/opt/nvidia/deepstream/deepstream/sources/includes # DeepStream SDK
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/usr/local/cuda/include # CUDA
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)
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# 链接目录（仅针对非 target 方式库）
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target_link_directories(sentinel-app
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PRIVATE
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/opt/nvidia/deepstream/deepstream/lib # DeepStream 库
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/usr/local/cuda/lib64 # CUDA 库
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)
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# 链接库
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target_link_libraries(sentinel-app
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PRIVATE
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# vcpkg target，现代CMake可追踪
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miniocpp::miniocpp
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yaml-cpp
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# RabbitMQ
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SimpleAmqpClient
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rabbitmq
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# 系统/DeepStream/GStreamer库
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${GST_LIBRARIES}
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gstrtspserver-1.0
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nvds_batch_jpegenc
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nvdsgst_meta
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nvdsgst_helper
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nvds_meta
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nvds_yml_parser
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# 系统/第三方库
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uuid
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cudart
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avformat
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avcodec
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avutil
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swscale
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avdevice
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avfilter
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curl
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m
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z
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pthread
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)
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# =====================================================
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# RPATH 设置（运行时库搜索路径）
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# =====================================================
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# BUILD_RPATH：构建时运行可执行文件的搜索路径
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# INSTALL_RPATH：安装后运行可执行文件的搜索路径
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# $ORIGIN 表示可执行文件所在目录
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set_target_properties(sentinel-app PROPERTIES
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BUILD_RPATH "\$ORIGIN/lib" # 优先搜索 dist/lib
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INSTALL_RPATH "\$ORIGIN/lib:/opt/nvidia/deepstream/deepstream/lib" # fallback DeepStream
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)
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# =====================================================
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# 安装规则（部署阶段）
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# =====================================================
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# 安装可执行文件，并自动收集 vcpkg 的运行时 so
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install(TARGETS sentinel-app
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RUNTIME_DEPENDENCIES
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PRE_EXCLUDE_REGEXES
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"ld-linux" # 排除系统 loader
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"libc.so" # 系统 libc
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"libm.so" # 系统 math
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"libpthread.so" # 系统线程库
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"libdl.so" # 系统动态库
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"libcuda" # CUDA 系统库
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"libnvidia" # NVIDIA 驱动
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"libnv" # NVIDIA 系统库
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"libgst" # GStreamer 系统库
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"libav" # ffmpeg 系统库
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"libcrypto" # 系统加密库
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"libssl"
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POST_EXCLUDE_REGEXES
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".*/opt/nvidia/.*" # 不拷贝 DeepStream 系统库
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".*/usr/lib/.*" # 不拷贝系统库
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RUNTIME DESTINATION . # 可执行文件放 dist/
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LIBRARY DESTINATION lib # 对应 so 库安装到 dist/lib/
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)
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