TARGET_OS_IPHONE and ApplicationTests

Question

Why doesn\'t this code work when compiling an ApplicationTests unit test bundle?

#if TARGET_OS_IPHONE
   #import 
   #import &         


        

Answer 1

You need to add

#include <TargetConditionals.h>

source: https://opensource.apple.com/source/CarbonHeaders/CarbonHeaders-8A428/TargetConditionals.h.auto.html

Answer 2

Both work well

• #import "TargetConditionals.h"
• #import <Foundation/Foundation.h>

<Foundation/Foundation.h> 
    |
    └-#import <Foundation/NSObjCRuntime.h>
        |
        └- #include <TargetConditionals.h> 
                |
                └- defined TARGET_OS_IPHONE

Answer 3

The simplest solution is to move the #import <Foundation/Foundation.h> statement out if the #if condition and replace Cocoa with AppKit like this:

#import <Foundation/Foundation.h>
#if TARGET_OS_IPHONE
   #import <UIKit/UIKit.h>
#else
   #import <AppKit/AppKit.h>
#endif

The Foundation umbrella header imports the NSObjCRuntime header which in turn imports the TargetConditionals header.

Answer 4

I had a similar problem: TARGET_OS_IPHONE isn't defined when building a static library. My solution was to add "-DTARGET_OS_IPHONE" to the "Other C Flags" section of the target build options.