Jeff Johnson: The ARCHS build setting for your framework includes both i386 and x86_64. The first thing you’ll want to do is to put your ARC code in files that aren’t used by your 32-bit apps. Next, you’ll want to wrap your ARC code files with #if __LP64__ to conditionally compile the code for 64-bit. … Continue reading Adding ARC Code to a Project That Also Compiles for i386