TARGET_OS_IOS in WatchKit Extension

Question

Created Jun ’15

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Hi,

I'm trying to use #ifdef TARGET_OS_IOS to have a part of an UIImage extension not to be compiled if used (included) in a WatchKit Extension. But it doesn't seem to work since I get a compilation error inside the ifdefed block.

Dirk

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Answer 1

Dex OP

Jun ’15

For WatchKit 1 extensions, TARGET_OS_IOS returns true because the extension is compiled for, and runs on, the iPhone. You're best option is to define a custom macro in the build settings for the WatchKit extension and conditionally compile based on that:

#ifndef MY_MACRO_THATS_ONLY_DEFINED_FOR_THE_WATCHKIT_EXTENSION
...
#endif

0

Answer 2

just.do.it OP

Jun ’15

Thanks for you're reply but it's a WatchOS 2 WatchKit Extension, so I expected TARGET_OS_WATCH to be true. Anyway, it turns out I didn't need this particular class extension. 🙂

Dirk

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Answer 3

sare OP

Sep ’16

Side note: you are using #ifdef, apple now always defines the value as 0 or 1 in the targetconditionals.h file. You should check '#if' without the 'def' part

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