-fobjc-nonfragile-abi2 on LLVM compiler 2.0: unkno

Question

I tried to built my project on Xcode with the LLVM compiler 2.0 and it gives this error:

error: unknown argument: '-fobjc-nonfragile-abi2'

I'm not familiar with the LLVM compilers, does anyone has a solution?

Removing the argument doesn't solve my problem, because my code has errors in that situation.

Answer 1

That option is no longer necessary as it is the default setting now in the latest version of LLVM.

Answer 2

From clang man page:

% man 1 clang ... Driver Options -Xclang arg Pass arg to the clang compiler. The -Xclang flag is a LLVM driver option for “Pass argument to the clang compiler,” and the the argument here is -fobjc-nonfragile-abi2.

So, if you put them in reversed order, the compiler will use -fobjc-nonfragile-abi2 as cflag, which isn’t, and get you the error in return.

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