cmaklist流程控制

目前只会配置-编译调试-打包发布，并且不会workflow控制
后续学习配置-编译调试-测试-打包发布，workflow控制，理解整个流程，目前对流程控制理解也不够。

1.CMake Presets

先于Cmakelist文件，指导项目配置。
参考CMake之Presets编写
**CMAKE_BUILD_TYPE：**指定了编译类型，debug还是release
**CMAKE_INSTALL_PREFIX：**指定了cmakelist中install的前缀路径，类似于cmake -CMAKE_INSTALL_PREFIX
CMakePresets.json

{"version": 8,"configurePresets": [{"name": "radar-debug","displayName": "radar-debug","description": "radar-debug","generator": "Unix Makefiles","binaryDir": "${sourceDir}/out/debug/build","cacheVariables": {"CMAKE_BUILD_TYPE": "Debug","CMAKE_INSTALL_PREFIX": "${sourceDir}/out/debug/install"}},{"name": "radar-release","displayName": "radar-release","description": "radar-release","generator": "Unix Makefiles","binaryDir": "${sourceDir}/out/release/build","cacheVariables": {"CMAKE_BUILD_TYPE": "Release","CMAKE_INSTALL_PREFIX": "${sourceDir}/out/release/install"}}]
}

2.Cmakelist

通过Presets配置的CMAKE_BUILD_TYPE 控制编译，配合add_definitions(-DDEBUG_PRINTF)控制程序表现

cmake_minimum_required(VERSION 3.5.0)
project(radarSerial VERSION 0.1.0 LANGUAGES C CXX)# Set the default build type to Release if not specified
if(NOT CMAKE_BUILD_TYPE)set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
endif()# Configure Debug and Release flags
set(CMAKE_CXX_FLAGS_DEBUG "-g -O0")  # Debug信息，关闭优化
set(CMAKE_CXX_FLAGS_RELEASE "-O3")   # 高级优化if(CMAKE_BUILD_TYPE STREQUAL "Debug")add_definitions(-DDEBUG_PRINTF)add_definitions(-DDEBUG_ENV)
endif()find_package(MY_LIBRARY_PATH NAMES CppLinuxSerial PATHS ${CMAKE_CURRENT_SOURCE_DIR}/lib/cmake NO_DEFAULT_PATH REQUIRED)set(LIB_mqtt3c_PATH /usr/local/lib/)message(STATUS "CppLinuxSerial_DIR = ${CppLinuxSerial_DIR}")add_executable(radarSerial main.cpp)target_include_directories(radarSerial PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include""${CMAKE_CURRENT_SOURCE_DIR}/include/CppLinuxSerial"
)target_sources(radarSerialPRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/comm.cpp${CMAKE_CURRENT_SOURCE_DIR}/src/mqtt.cpp${CMAKE_CURRENT_SOURCE_DIR}/src/cJSON.c)target_link_libraries(radarSerial CppLinuxSerial::CppLinuxSerial pthread paho-mqtt3c)install(TARGETS radarSerial RUNTIME DESTINATION bin)
install(FILES
${LIB_mqtt3c_PATH}/libpaho-mqtt3c.so 
${LIB_mqtt3c_PATH}/libpaho-mqtt3c.so.1 
${LIB_mqtt3c_PATH}/libpaho-mqtt3c.so.1.3 
${CMAKE_CURRENT_SOURCE_DIR}/lib/libCppLinuxSerial.soDESTINATION lib)