ARC deploy to 10.6 fails if selectively enabled
| Originator: | me | ||
| Number: | rdar://11539939 | Date Originated: | 25-May-2012 09:58 PM |
| Status: | Open | Resolved: | Closed |
| Product: | Developer Tools | Product Version: | Xcode 4.3.2 |
| Classification: | Other Bug | Reproducible: | Always |
I was deploying some code that uses ARC on a machine running 10.6 today, and received an error from the dynamic linker:
Symbol not found: _objc_retain
(amongst others).
My project was mostly using existing manual retain–release code, with only a couple of new files using ARC. Accordingly, I had ARC disabled in the main target settings, and had selectively enabled it for the two files by adding -fobjc-arc to the per-file build settings (under Build Phases).
On a hunch, I enabled ARC in the target, and then flopped the per-file settings (removing the flag for the two files, and adding -fno-objc-arc to all the others) and no longer got the dynamic link error on 10.6.
I suggest the documentation be updated to reflect this.
13-Jul-2012 12:40 PM Apple Developer Bug Reporting Team :
Engineering has requested the following information in order to further investigate this issue:
Does this reproduce with Xcode 4.4? Xcode should now be passing -fobjc-link-runtime to the compiler and linker, which we believe should fix this problem.
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