I'm having a problem trying to migrate my iPhone app to the new ARC technology. When I try to convert the code, the following error shows up 29 times:
Apple LLVM compiler 3.0 Error
-fobjc-arc is not supported with fragile abi
What does this mean? And more importantly, how can I fix it? Thanks in advance!
This is an unfortunate bug in Seed 3, where the migrator and simulator aren't working well together. To address this, just switch to a device target, then do migration.
change compiler.
Set the project compiler to "LLVM GCC 4.2", instead of "Apple LLVM 3.0"; ARC is only supported when you use Apple LLVM. To set the project compiler, in your Project, under "Build Settings", and then under "Build Options", there is a settings for "Compiler for Objective-C". Change that value to "LLVM GCC 4.2
来源：https://stackoverflow.com/questions/6965990/objective-c-arc-error-fobjc-arc-is-not-supported-with-fragile-abi