- 認識cmake、看得懂Cmake
- 簡單使用Cmake tool
- 如何自己撰寫Cmake
- CMake並不直接建構出最終的軟體，而是產生標準的建構檔（如Unix的Makefile)
- CMake設定檔（CMakeLists.txt）
- 類似 使用Python語言開發 的 SCons
- "Cross platform Make"的縮寫
- install
sudo apt-get -y install cmake brew install cmake
// CMakeLists.txt
cmake_minimum_required(VERSION 3.10)
project(hello VERSION 1.0)
add_executable(hello main.cpp)
mkdir ./build
// main.cpp
#include <iostream>
int main()
{
std::cout << "Hello World\n";
return 0;
}
$ cd ./build
$ cmake ../
$ make
$ ./hello
cmake ..對上一層的CmakeLists.txt cmake 產生CmakeCache.txt、CmakeFiles、cmake_install.cmake、Makefile一般來說，會建立build放置cmake 產生的東西。 make 產生的可執行檔
make --directory=build
set_target_properties(target1 target2 ...
PROPERTIES prop1 value1
prop2 value2 ...)
set_target_properties(hello PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/bin/")
- create
includefolder - simple
Tim.h
// Tim.h
#pragma once
#include <iostream>
class Tim
{
public:
inline void boo()
{
std::cout << "Tim!\n";
}
};
// main.cpp
#include <iostream>
#include "Tim.h"
int main()
{
std::cout << "Hello World\n";
Tim().boo();
return 0;
}
- modify
CMakeLists.txt
add_executable(hello main.cpp)
+ target_include_directories(hello PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
include_directories(include) 也可以
:::info
:bulb: Prefer the target_include_directories() command to add include directories to individual targets and optionally propagate/export them to dependents.
:::
- build again
$ cmake ../
$ make
$ ./hello
- 如果
CMakeLists.txt不是放在當前目錄，且指定生成的檔案放置的目錄
cmake -B/path/to/my/build/folder -S/path/to/my/source/folder
+ include_directories(src)
include_directories([AFTER|BEFORE] [SYSTEM] dir1 [dir2 ...])Add the given directories to those the compiler uses to search for include files.
cmake_minimum_required(VERSION 3.10)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
message(STATUS "CMAKE_SOURCE_DIR is ${CMAKE_SOURCE_DIR}")
project(hello VERSION 1.0)
add_executable(hello main.cpp)
target_include_directories(hello PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
set_target_properties(hello PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/bin/")
Specify the C++ Standard
set(CMAKE_CXX_STANDARD 20) set(CMAKE_CXX_STANDARD_REQUIRED ON)
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