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 <iostream>
void hello(){
std::cout<<"hello world"<<std::endl;
}
int acc_add(int n){
int sum=0;
for(int i=0;i<n;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 <iostream>
#include <string>
#include "addlib/library.h"
using namespace std;
int main(){
int n=10;
int ans=acc_add(n);
cout<<"1+....+"<<n<<"="<<ans<<endl;
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，下面小编将继续为大家介绍
