Re: Garbage Collection Pre-Processor Flag
Re: Garbage Collection Pre-Processor Flag
- Subject: Re: Garbage Collection Pre-Processor Flag
- From: Marcel Weiher <email@hidden>
- Date: Tue, 22 Jul 2008 09:48:33 -0700
On Jul 22, 2008, at 9:21 , Jonathon Mah wrote:
Are Xcode build settings exposed as pre-processor variables? I know
they're available when pre-processing Info.plists, but can't find a
way to use them in source code files (.m).
It's not Xcode build settings, but gcc does have predefined macros
that can tell you wether GC is on.
#ifdef OBJC_GC
#error This code doesn't support garbage collection
#endif
Try it with
#if __OBJC_GC__
This also shows up when getting the list of pre-defined macros via
cpp -ObjC -fobjc-gc -dM < /dev/null
Cheers,
Marcel
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