Question

I infer from Google search results that strings.h (from here) is for UNIX systems. I would like to wrap the following line with a macro check of whether the host’s operating system is Linux/UNIX. It would be much appreciated to hear suggestions about it. Thanks in advance.

#include <strings.h>

Answer 1

One option would be:

#ifndef _WIN32
#include <strings.h>
#endif

Per MSDN, _WIN32 is “defined for applications for Win32 and Win64. Always defined.”

A compiler or standard library for an operating system other than Windows is, of course, free to define _WIN32, but that would be… most unusual.