Cmake Language

最新推荐文章于 2025-03-18 16:46:44 发布

陈william

最新推荐文章于 2025-03-18 16:46:44 发布

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分类专栏： Cmake

本文链接：https://blog.youkuaiyun.com/qq_30070433/article/details/89044822

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本文档介绍了CMake的基础知识及如何使用CMakeLists.txt文件来组织项目。详细讲解了CMake的基本语法，如条件判断、循环等控制流程指令，以及如何创建可执行文件和库文件。此外还介绍了目标配置、依赖管理和自定义构建任务等方面的内容。

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Cmake language

Cmake documentation：https://cmake.org/cmake/help/latest/manual/cmake-commands.7.html

Control flow：

if**() / elseif() / else() / endif()

foreach() / endforeach()

while() / endwhile()

break() / continue() / **return()

Comments starts with #

such as：

# I am a comment

Creating a CMake project

Cmake entry point:CMakeLists.txt

1、put it at your peoject’s root
2、check the CMake version and detects the compiler
3、Recurse in sub-folders of each executable or library

the example of CMakeList.txt

cmake_minimun_required(VERSION x.y)
project(<name>)

option(SECRET_FEATYRE "Enable secert feature" OFF)

add_subdirectory(mylib)
add_subdirectory(myexy)

Executable

add_executable(<name>
    [WIN32] [MACOSX_BUNDLE]
    [source1] [source2 ...])

Library

add_library(<name>
    [WIN32] [MACOSX_BUNDLE]
    [source1] [source2 ...])

Library types:

SHARED:Shared library(.dll, .so, .dylib)
STATIC:Static Library(.lib, .a)
INTERFACE
- Virtual target, usually used for header only libraries
- Doesn’t show up in IDEs(no target or files)

Custom atrget

add_custom_target(<name>
    [COMMAND command] [args] 
    [DEPENDS depends] 
    [WORKING_DIRECTORY dir])

For both executable and libraries

target_include_directories(<target>
    [PUBLIC | INTERFACE | PRIVATE] 
    <DIR>)

target_compile_definition(<target>
    [PUBLIC | INTERFACE | PRIVATE] 
    <name> = <value>)

target_compile_options(<target>
    [PUBLIC | INTERFACE | PRIVATE] 
    <option>)

target_compile_definitions(mylib
  	PRIVATE FASTPATH =1)

target_compile_option(mylib
   	PRIVATE -Wall)

target_include_directories(<name>
    [PUBLIC] [INTERFACE][PRIVATE] 
    <DIR>

Adding a dependency on an another target

target_link_libraries(<target>
    [PUBLIC | INTERFACE | PRIVATE] 
    <lib>)

Example

target_link_library(myexe 
		PRIVATE mylib)

Three types of dependencies:

PRIVATE :Options are not propagated to users of the library, but users to build the current target.
INTERFACE :Options are propagated to users of the library, but not used to build the current target.
PUBLIC :Options are propagated to users of the library and used to build the current target.

Example
https://github.com/Wlain/Cmake-Language/tree/master