cmake_install_libdir

`CMake`是一个跨平台、开源的构建系统，用于自动化管理软件的构建过程。`install(TARGETS)`命令是CMake中用于将编译好的目标（比如库或可执行文件）安装到指定位置的常用指令，其中`cmake_install LibDir`选项用来设置库文件（`.a`, `.so`, `.dll`等）的安装目录。

`LibDir`参数是一个变量，用于配置动态链接库（`.dll` or `.so`）以及静态库（`.lib`）被安装到的位置。当你调用`install`命令时，你可以指定`cmake_install LibDir ${CMAKE_INSTALL_LIBDIR}`，这会将库安装到CMake默认的`lib`子目录下，如`/usr/local/lib`或`C:\Program Files\myapp\lib`，具体取决于你的系统和CMake配置。

如果你想要更具体的定制，例如为不同类型的库（如`libraries`、`runtime_only`等）或特定的目标设置不同的安装路径，你可以使用`install(RunTime DESTINATION <your_path>)`或`install(Development DESTINATION <your_path>)`，然后在这些`DESTINATION`里指定`Libraries`子目录。

相关问题

CMAKE_INSTALL_LIBDIR

CMAKE_INSTALL_LIBDIR是一个CMake变量，用于指定安装目录中的库文件目录。它的值取决于操作系统和CMake的配置选项。在Unix-like系统上，默认情况下，该变量的值为 "lib"，而在Windows系统上，默认情况下，该变量的值为 "lib" 或 "bin"，取决于CMake生成的库文件是放置在与执行文件相同的目录还是独立的库文件目录中。

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

这段代码是一个 CMakeLists.txt 文件，用于构建一个名为 "mcu_kit" 的项目。下面是对每行代码的详细注释：

cmake_minimum_required(VERSION 3.8.0 FATAL_ERROR)

指定最低的 CMake 版本，如果当前版本不符合要求，则提示错误。

project(mcu_kit VERSION 0.1.0 DESCRIPTION "mcu-kit SDK" LANGUAGES C)

定义项目名称、版本、描述和使用的编程语言。

set(PROJECT_BRIEF "vDiscovery")

设置一个变量，用于描述项目简介。

set(CMAKE_C_STANDARD 11)
set(CMAKE_C_EXTENSIONS ON)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 11)

指定使用的 C 和 C++ 标准版本。

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

启用位置独立代码（PIC）选项。

add_compile_options(-Wall)

添加编译选项，这里添加了 -Wall 选项，表示开启所有警告。

list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")

将自定义的 CMake 模块路径添加到 CMAKE_MODULE_PATH 变量中。

include(CMakePrintHelpers)
include(ConfigureChecks)

包含两个自定义的 CMake 模块，用于输出调试信息和配置检查。

if(EXISTS "${PROJECT_SOURCE_DIR}/config.cmake")
    include(config.cmake)
else()
    message(FATAL_ERROR "Can't find cmake.config file")
endif()

如果存在 config.cmake 文件，则包含它，否则输出错误信息并停止构建。

if(${CMAKE_CROSSCOMPILING})
    set(LV_SIMULATOR_ON_PC OFF)
else()
    set(LV_SIMULATOR_ON_PC ON)
endif()

根据交叉编译标志设置变量 LV_SIMULATOR_ON_PC。如果正在交叉编译，则设置为 OFF；否则设置为 ON。

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"
)

配置文件模板，用于生成编译时需要的头文件。

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})

设置安装目录的各个子目录。

include(PrepareInstall)

包含一个自定义的 CMake 模块，用于准备安装目录。

set(KIT_ROOT_DIR ${CMAKE_SOURCE_DIR})

设置变量 KIT_ROOT_DIR 的值为源代码目录。

add_subdirectory("base")
add_subdirectory("lib")
add_subdirectory("drivers")
add_subdirectory("framework")
add_subdirectory("sysapp")
add_subdirectory("app")

添加子目录，用于构建项目的各个模块。每个子目录都包含了相应的 CMakeLists.txt 文件。