实例分享cmake编译一个简单c++项目(demo)

发布时间：2020-09-19 21:08:04

来源：脚本之家

阅读：63

作者：mdxy-dxy

下面通过一个小例子来说明cmake编译一个c++项目，生成可执行文件：

整理目录结构：

CMake Lists.txt addlib build main.cpp

电脑上没有tree命令，也不大敢截图，将就着看看，其中build是cmake编译指定的路径，addlib下面也有一个头文件和源文件  ，还有一个CmakeLists.txt,可以看下：

CMake Lists.txt library.cpp library.h

先看各个文件的代码：

addlib/library.h:

#ifndef CPPPROJECT_LIBRARY_H

#define CPPPROJECT_LIBRARY_H

int acc_add(int);

#endif

addlib/library.cpp:

#include "library.h"

#include

void hello(){

std::cout<

}

int acc_add(int n){

int sum=0;

for(int i=0;i

sum+=i;

}

return sum;

}

addlib/CMakeLists.txt:

cmake_minimum_required(VERSION 3.10)

project(accliblibrary)

set(CMAKE_CXX_STANDARD 11)

add_library(accliblibrary SHARED library.cpp library.h) # 诉生成一个库文件。

main.cpp:

#include

#include

#include "addlib/library.h"

using namespace std;

int main(){

int n=10;

int ans=acc_add(n);

cout<

return 0;

}

CMakeLists.txt:

cmake_minimum_required(VERSION 3.10)

project(cppproject)

set(CMAKE_CXX_STANDARD 11)

add_subdirectory(acclib)

add_executable(cppproject main.cpp) #生成一个可执行的文件

target_link_libraries(cppproject accliblibrary)

下面就是编译该项目，生成可执行文件：

cd build/

cmake ..-- The C compiler identification is AppleClang 8.0.0.8000042

-- The CXX compiler identification is AppleClang 8.0.0.8000042

-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc

-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc -- works

-- Detecting C compiler ABI info

-- Detecting C compiler ABI info - done

-- Detecting C compile features

-- Detecting C compile features - done

-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++

-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++ -- works

-- Detecting CXX compiler ABI info

-- Detecting CXX compiler ABI info - done

-- Detecting CXX compile features

-- Detecting CXX compile features - done

-- Configuring done

-- Generating done

-- Build files have been written to: /Users/zhoumeixu/Documents/cmakedemo/build

make:

Scanning dependencies of target addliblibrary

[ 25%] Building CXX object addlib/CMakeFiles/addliblibrary.dir/library.cpp.o

[ 50%] Linking CXX shared library libaddliblibrary.dylib

[ 50%] Built target addliblibrary

Scanning dependencies of target cmakedemo

[ 75%] Building CXX object CMakeFiles/cmakedemo.dir/main.cpp.o

[100%] Linking CXX executable cmakedemo

[100%] Built target cmakedemo

./cmakedemo

1+....+10=45

这篇文章就介绍下面，下面亿速云小编将继续为大家介绍