``` list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake") ```
时间: 2024-05-25 10:07:58 浏览: 165
这段代码使用了CMake的`list`命令,将变量`CMAKE_MODULE_PATH`中的值追加了一个新的路径,即`${CMAKE_CURRENT_SOURCE_DIR}/cmake`。
`CMAKE_MODULE_PATH`是一个用于存储CMake模块的路径列表的变量。模块可以通过`include()`命令在CMake脚本中加载并使用。在这个例子中,`${CMAKE_CURRENT_SOURCE_DIR}`是当前项目的根目录,`/cmake`表示在根目录下有一个名为`cmake`的文件夹,里面存放了一些自定义的CMake模块。
通过添加这个路径到`CMAKE_MODULE_PATH`中,可以让CMake在查找模块时搜索到这个自定义模块路径,从而方便地使用自定义模块。
相关问题
cmake_minimum_required(VERSION 3.8.0 FATAL_ERROR) project(mcu_kit VERSION 0.1.0 DESCRIPTION "mcu-kit SDK" LANGUAGES C ) set(PROJECT_BRIEF "vDiscovery") set(CMAKE_C_STANDARD 11) set(CMAKE_C_EXTENSIONS ON) set(CMAKE_C_STANDARD_REQUIRED ON) set(CMAKE_CXX_STANDARD 11) set(CMAKE_POSITION_INDEPENDENT_CODE ON) add_compile_options(-Wall) list(APPEND CMAKE_MODULE_PATH "${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 ${CMAKE_SOURCE_DIR}) add_subdirectory("base") # add_subdirectory("third-party") add_subdirectory("lib") add_subdirectory("drivers") add_subdirectory("framework") add_subdirectory("sysapp") add_subdirectory("app") include(GeneratePkgConfig) include(Linux-kitInfo)详细注释一下这段代码
这段代码是一个 CMakeLists.txt 文件,用于构建一个名为 "mcu_kit" 的项目。下面是对每行代码的详细注释:
```cmake
cmake_minimum_required(VERSION 3.8.0 FATAL_ERROR)
```
指定最低的 CMake 版本,如果当前版本不符合要求,则提示错误。
```cmake
project(mcu_kit VERSION 0.1.0 DESCRIPTION "mcu-kit SDK" LANGUAGES C)
```
定义项目名称、版本、描述和使用的编程语言。
```cmake
set(PROJECT_BRIEF "vDiscovery")
```
设置一个变量,用于描述项目简介。
```cmake
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_EXTENSIONS ON)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 11)
```
指定使用的 C 和 C++ 标准版本。
```cmake
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
```
启用位置独立代码(PIC)选项。
```cmake
add_compile_options(-Wall)
```
添加编译选项,这里添加了 -Wall 选项,表示开启所有警告。
```cmake
list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
```
将自定义的 CMake 模块路径添加到 CMAKE_MODULE_PATH 变量中。
```cmake
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。
```cmake
if(EXISTS "${PROJECT_SOURCE_DIR}/config.cmake")
include(config.cmake)
else()
message(FATAL_ERROR "Can't find cmake.config file")
endif()
```
如果存在 config.cmake 文件,则包含它,否则输出错误信息并停止构建。
```cmake
if(${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。
```cmake
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。
```cmake
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。
```cmake
include(PrepareInstall)
```
包含一个自定义的 CMake 模块,用于准备安装目录。
```cmake
set(KIT_ROOT_DIR ${CMAKE_SOURCE_DIR})
```
设置变量 KIT_ROOT_DIR 的值为源代码目录。
```cmake
add_subdirectory("base")
add_subdirectory("lib")
add_subdirectory("drivers")
add_subdirectory("framework")
add_subdirectory("sysapp")
add_subdirectory("app")
```
添加子目录,用于构建项目的各个模块。每个子目录都包含了相应的 CMakeLists.txt 文件。
list(APPEND PROJECT_GLOBAL_INCLUDE "${CMAKE_CURRENT_SOURCE_DIR}/${path}")
在CMake中,`list(APPEND ...)` 命令用于向列表变量中追加一个或多个元素。而 `PROJECT_GLOBAL_INCLUDE` 往往是一个变量,用来存储包含目录的列表,这些目录会被CMake用来配置项目中的编译器。
具体到你提供的这行代码:
```cmake
list(APPEND PROJECT_GLOBAL_INCLUDE "${CMAKE_CURRENT_SOURCE_DIR}/${path}")
```
它的作用是将一个目录路径追加到变量 `PROJECT_GLOBAL_INCLUDE` 中。这里使用了 `${CMAKE_CURRENT_SOURCE_DIR}` 变量,它表示当前处理的CMakeLists.txt文件所在的源码目录。`${path}` 是一个字符串,代表了一个相对路径或绝对路径,该路径会被转换成相对于当前源码目录的路径。
将这两部分结合起来,`${CMAKE_CURRENT_SOURCE_DIR}/${path}` 构成了一个完整的目录路径,然后通过 `list(APPEND ...)` 命令将这个路径添加到 `PROJECT_GLOBAL_INCLUDE` 列表变量中。
通常,这样的操作是在配置项目编译选项时进行的,例如,你可能需要将项目中的某个目录加入到编译器的包含目录中,以便编译器能够找到其中的头文件。
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