c++ cmake 跨平台编译

https://zhuanlan.zhihu.com/p/661285478

CMakeLists.txt

cmake_minimum_required(VERSION 3.10)

project(hello1)
set(CMAKE_C_COMPILE "aarch64-poky-linux-gcc")
set(CMAKE_CXX_COMPILE "aarch64-poky-linux-g++")
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

add_executable(hello main.cpp)

 main.cpp

#include <iostream>

using namespace std;
int main(int argc, char *argv[])
{

    cout << "hellow world ！！\r\n" << endl;

    return 0;
}

使能编译器指令

source /opt/poky/3.1.20/environment-setup-aarch64-poky-linux 

cmake -Bbuild ./ 

cd build/

make 

ls

file ./hello

./hello: ELF 64-bit LSB pie executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID[sha1]=69488a8568a8995d10a890a6a9717fffce3b7dfd, with debug_info, not stripped