A program developed in C language can know which OS is compiling it?

Question

I'm developing an API multi platform in C language and I need to know if there is a way to know which OS is compiling it.

For example, through an pre compilation directive like that follows:

#ifdef LINUX
#include<linuxlib.h>
#elif OSX
#include<osxlib.h>
#elif WINDOWS
#include<rwindowslib.h>

why would you need to know that? Maybe there's something else that you can use? — Aleksander Lidtke, Feb 16 '14 at 00:20

Valeri Atamaniouk · Accepted Answer · 2014-02-16T00:56:51.753

1

Here is some info:

#if defined(__LINUX__)
// Linux, Android, MacOS
#if defined(__ANDROID__)
// Android
#elif defined(__APPLE__)
// MacOS
#else
// Linux or its flavor
#endif
#elif defined(WIN32)
// Windows targets must have WIN32 (_WIN32)
#endif

Here is a large list of what can be defined on various platforms: http://sourceforge.net/p/predef/wiki/OperatingSystems/

edited Feb 16 '14 at 00:56

answered Feb 16 '14 at 00:45

Valeri Atamaniouk

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This works fine for linux and mac os, i not tested the Windows – Filipe Feb 16 '14 at 01:19
1

@LuizFilipe _WIN32 macro is mandated by Microsoft for Win API builds. http://msdn.microsoft.com/en-us/library/b0084kay.aspx – Valeri Atamaniouk Feb 16 '14 at 01:21

A program developed in C language can know which OS is compiling it?

1 Answers1