Macro definition in cross-platform

When development various platforms(Android,iPhone,Mac,Windows and so on), it is necessary diverged processing(#ifdef/#endif) by depends on an platform definition. But, I don't know original definition in Mac/iPhone/Android.

　Windows : WIN32 (Visual C++)

　Mac : __MAC_NA(?) (XCode)

　iPhone/iPad/iPod : __IPHONE_NA(?) (XCode)开发者_高级运维

　Android : ?? (AndroidNDK)

By what definition should I divide?

---

For iPhone, I believe the define is TARGET_OS_IPHONE and for Android it's ANDROID. I'm not too familiar with Apple-specific stuff, but after poking around I found a great list for tons of OS defines here. There's another answer here on SO that has a method for pulling the defines out, found here

---

You could always make some up for your projects, thereby freeing yourself from compiler/platform specific defines.

• Android: #define PLATFORM_ANDROID
• Iphone: #define PLATFORM_IPHONE
• etc.

And have all builds include a configuration file that defines one of these macros in a given project and that should work across the board. If you're using Visual Studio, you can just define these in the Project Settings without even needing a configuration file.

---

Android NDK uses definition ANDROID.