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I’m writing some semi-portable code and want to be able to detect when I’m compiling for iPhone. So I want something like #ifdef IPHONE_SDK....
Presumably Xcode defines something, but I can’t see anything under project properties, and Google isn’t much help.
It’s in the SDK docs under ‘Compiling source code conditionally’
The relevant definitions are TARGET_OS_IPHONE (and he deprecated TARGET_IPHONE_SIMULATOR), which are defined in /usr/include/TargetConditionals.h within the iOS framework. On earlier versions of the toolchain, you had to write:
but this is no longer necessary on the current (xCode 6/iOS8) toolchain.
So, for example, if you want to only compile a block of code if you are building for the device, then you should do