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判断CPU 架构和操作系统类型
|C++C++ 基础|
Word count: 295|Reading time: 1 min
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#include<iostream>
  
int main()
{
  #if defined __linux__
      std::cout<<"linux system"<<std::endl;
  #elif defined _WIN32
      std::cout<<"windows system"<<std::endl;
  #endif
   
  #if defined  __aarch64__
      std::cout<<"this is arm cpu"<<std::endl;
  #elif defined __x86_64__
      std::cout<<"this id x86 cpu"<<std::endl;
  #endif
      return 0;
}

cmake 中判断CPU 架构，操作系统类型

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cmake_minimum_required(VERSION 3.10.0)
 
message(${CMAKE_HOST_SYSTEM_NAME})
message(${CMAKE_HOST_SYSTEM_PROCESSOR})
 
if(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux")
    message("this is Linux")
elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Windows")
  message("this is Windows")
endif()
if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "aarch64")
    message("this is aarch64 cpu")
elseif(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "x86_64")
  message("this is x86_64 cpu")
endif()

根据编译器的情况，有下面的宏用于调试程序:

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//判断是不是C++环境，需要注意的是ROS环境中这里为否
#ifdef _cplusplus
  printf("C++\n");
#endif
//判断是不是C环境
#ifdef __STDC__
  printf("C\n");
#endif
//输出语句所在函数，行，文件等参数
printf("function %s: Line 25\n",__func__);   //或者用__FUNCTION__
printf("pretty function %s: Line 25\n",__PRETTY_FUNCTION__);   //函数声明，包括了参数
printf("line: %d\n",__LINE__);
printf("current file: %s\n",__FILE__);
printf("date: %s\n",__DATE__);
printf("time: %s\n",__TIME__);