Xcode Cross-Platform Development

From WikiOD

TargetConditionals[edit | edit source]

The system header TargetConditionals.h defines several macros which you can use from C and Objective-C to determine which platform you're using.

#import <TargetConditionals.h>  // imported automatically with Foundation
* (void)doSomethingPlatformSpecific {
#if TARGET_OS_IOS
    // code that is compiled for iPhone / iPhone Simulator
#elif TARGET_OS_MAC && !TARGET_OS_IPHONE
    // code that is compiled for OS X only
#else
    // code that is compiled for other platforms
#endif
}

The values of the macros are:

7.0

When using the iOS 9.1, tvOS 9.0, watchOS 2.0, OS X 10.11 or newer SDKs:

Macro Mac iOS iOS simulator Watch Watch simulator TV TV simulator
TARGET_OS_MAC 1 1 1 1 1 1 1
TARGET_OS_IPHONE 0 1 1 1 1 1 1
TARGET_OS_IOS 0 1 1 0 0 0 0
TARGET_OS_WATCH 0 0 0 1 1 0 0
TARGET_OS_TV 0 0 0 0 0 1 1
TARGET_OS_SIMULATOR 0 0 1 0 1 0 1
TARGET_OS_EMBEDDED 0 1 0 1 0 1 0
TARGET_IPHONE_SIMULATOR 0 0 1 0 1 0 1

7.0

When using the iOS 8.4, OS X 10.10, or older SDKs:

Macro Mac iOS iOS simulator
TARGET_OS_MAC 1 1 1
TARGET_OS_IPHONE 0 1 1
TARGET_OS_EMBEDDED 0 1 0
TARGET_IPHONE_SIMULATOR 0 0 1

Credit:Stack_Overflow_Documentation