如何检查OS用preprocessor指令？ [英] How do I check OS with a preprocessor directive?

问题描述

我需要我的code做基础的操作系统，它被编上不同的东西。我正在寻找这样的事情：

I need my code to do different things based on the operating system on which it gets compiled. I'm looking for something like this:

#ifdef OSisWindows
  //define something for Windows
#else
  //define it for a Unix machine
#endif

有没有办法做到这一点？有没有更好的方式做同样的事情？

Is there a way to do this? Is there a better way to do the same thing?

推荐答案

有由大多数编译器使用predefined宏的您可以在这里找到列表

There are predefined macros that are used by most compilers, you can find the list here

否则，你将不得不调整构建系统让喜欢OS_WINDOWS / OS_UNIX宏编译时被定义，那么你将不得不使用IFDEF检查它在code。

Otherwise, you will have to adjust the build system so a macro like OS_WINDOWS/OS_UNIX gets defined during compilation, then you will have to check it in the code using ifdef.

#ifdef OS_WINDOWS
   //define something for Windows
#else
  //define it for a Unix machine
#endif

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