cmake | add_subdirectory的使用

CMake中的add_subdirectory命令用于将子目录添加到构建,其格式如下:

add_subdirectory(source_dir [binary_dir] [EXCLUDE_FROM_ALL] [SYSTEM])

source_dir指定源CMakeLists.txt和代码文件所在的目录。如果它是相对路径,则将相对于当前目录(典型用法)对其进行评估,但它也可能是绝对路径。binary_dir指定放置输出文件的目录。如果它是相对路径,则将相对于当前输出目录进行评估,但它也可能是绝对路径。如果未指定binary_dir,则将在扩展任何相对路径之前使用source_dir的值(典型用法).指定源目录下的CMakeLists.txt文件将在当前输入文件继续处理之前立即被CMake处理(The CMakeLists.txt file in the specified source directory will be processed immediately by CMake before processing in the current input file continues beyond this command)。

如果提供了EXCLUDE_FROM_ALL参数,则默认情况下,子目录中的target将不包括在父目录的ALL target中,并且将从IDE项目(project)文件中排除。用户必须在子目录中显式构建target。这适用于子目录包含有用但不是必须的项目的单独部分(separate part)(例如一组示例)的情况。通常,子目录应包含自己的project命令调用,以便在子目录中生成完整的构建系统(例如VS IDE解决方案文件)。注意,target间依赖关系取代此排除。如果父项目构建的target依赖于子目录中的target,则依赖对象target将包含在父项目构建系统中以满足依赖关系。

如果

cmake_minimum_required(VERSION 3.8.0 FATAL_ERROR) project(mcu_kit VERSION 0.1.0 DESCRIPTION "mcu-kit SDK" LANGUAGES C ) set(PROJECT_BRIEF "vDiscovery") set(CMAKE_C_STANDARD 11) set(CMAKE_C_EXTENSIONS ON) set(CMAKE_C_STANDARD_REQUIRED ON) set(CMAKE_CXX_STANDARD 11) set(CMAKE_POSITION_INDEPENDENT_CODE ON) add_compile_options(-Wall) list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake") include(CMakePrintHelpers) include(ConfigureChecks) if(EXISTS "${PROJECT_SOURCE_DIR}/config.cmake") include(config.cmake) else() message(FATAL_ERROR "Can't find cmake.config file") endif() if(${CMAKE_CROSSCOMPILING}) set(LV_SIMULATOR_ON_PC OFF) else() set(LV_SIMULATOR_ON_PC ON) endif() configure_file( "${PROJECT_SOURCE_DIR}/base/base_sdk_version.h.in" "${PROJECT_SOURCE_DIR}/base/base_sdk_version.h" ) configure_file( "${PROJECT_SOURCE_DIR}/base/base_config.h.in" "${PROJECT_SOURCE_DIR}/base/base_config.h" ) set(CMAKE_INSTALL_BINDIR ${CMAKE_INSTALL_PREFIX}/bin) set(CMAKE_INSTALL_SBINDIR ${CMAKE_INSTALL_PREFIX}/sbin) set(CMAKE_INSTALL_LIBDIR ${CMAKE_INSTALL_PREFIX}/lib) set(CMAKE_INSTALL_INCLUDEDIR ${CMAKE_INSTALL_PREFIX}/include) set(CMAKE_INSTALL_SYSCONFDIR ${CMAKE_INSTALL_PREFIX}/etc) set(CMAKE_INSTALL_SHARESTATEDIR ${CMAKE_INSTALL_PREFIX}/com) set(CMAKE_INSTALL_LOCALSTATEDIR ${CMAKE_INSTALL_PREFIX}/var) set(CMAKE_INSTALL_INFODIR ${CMAKE_INSTALL_PREFIX}/info) set(CMAKE_INSTALL_LOCALEDIR ${CMAKE_INSTALL_PREFIX}/locate) set(CMAKE_INSTALL_MANDIR ${CMAKE_INSTALL_PREFIX}/man) set(CMAKE_INSTALL_DOCDIR ${CMAKE_INSTALL_PREFIX}/doc) set(CMAKE_INSTALL_RESDIR ${CMAKE_INSTALL_PREFIX}) include(PrepareInstall) set(KIT_ROOT_DIR ${CMAKE_SOURCE_DIR}) add_subdirectory("base") # add_subdirectory("third-party") add_subdirectory("lib") add_subdirectory("drivers") add_subdirectory("framework") add_subdirectory("sysapp") add_subdirectory("app") include(GeneratePkgConfig) include(Linux-kitInfo)详细注释一下这段代码
05-25
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